ELECTRIC POWER SWITCHING, PROTECTION, AND CONTROL SOLUTIONS TABLE OF CONTENTS

5 Introduction

AUTOMATION 6 IntelliRupter ® PulseCloser ® Fault Interrupter

10 TripSaver ® II Cutout-Mounted Recloser

12 VacuFuse™ Self-Resetting Interrupter

16 Scada-Mate ® Switching System

20 Scada-Mate CX™ Switching System

22 Scada-Mate® SD Switching System

24 Remote Supervisory & Source-Transfer Vista ® Underground Distribution Switchgear

26 Remote Supervisory & Source-Transfer PMH and PME Pad-Mounted Gear

28 High-Speed Fault-Clearing System

30 IntelliCap ® 2000 & IntelliCap ® Automatic Capacitor Control, IntelliNode™ Interface Module & 6801M Automatic Switch Operator

32 IPERC GridMaster ® Microgrid Control System

SOFTWARE 34 IntelliTeam ® SG Automatic Restoration System

36 IntelliTeam ® FMS Feeder Management System

38 IntelliTeam ® CNMS Communication Network Management System

COMMUNICATIONS 40 SpeedNet™ Radios & SpeedNet™ Cell Edge Gateway SERVICES 42 Analysis & Design

44 Project Execution

46 Post-Installation Support

47 Applications

MEDIUM-VOLTAGE 48 PMH and PME Pad-Mounted Gear

56 Vista ® Underground Distribution Switchgear

60 Vista ® SD Underground Distribution Switchgear

64 System VI™ Switchgear

66 Custom Metal-Enclosed Switchgear

70 Fault Tamer ® Fuse Limiter

72 Type XS Fuse Cutouts

74 Positrol® Fuse Links

76 SMD-20 Power Fuses & SMD-40 Power Fuses

80 Loadbuster Disconnect ® Switch

82 Loadbuster ®—The S&C Loadbreak Tool

84 Regulator Bypass Switches & Recloser Bypass Disconnects

86 Omni-Rupter ® Switches & Alduti-Rupter ® Switches

HIGH-VOLTAGE 94 SMD-1A, -2B, -2C, -3, and -50 Power Fuses

96 Circuit-Switchers

98 Trans-Rupter II ® Transformer Protector S C’S SMART GRID SOLUTIONS DEMONSTRATION CENTER

4 INTRODUCTION IMAGINE you have a time machine and It’s difficult to keep ahead of the curve you brought Alexander Graham Bell and and address these changes. Thomas Edison into the year 2019. If you S&C IS HERE TO HELP. We are applying showed Mr. Bell your smart phone, he our century-long heritage of innovation wouldn’t understand what he was looking to address the challenges facing today’s at. But if you took Mr. Edison outside and power grid. Our distribution automation showed him an electrical distribution systems are pushing the boundaries of system, he would have a pretty good idea reliability and reducing the duration of what he was seeing. That, however, is outages from hours to seconds—or to no quickly changing. outage at all. In the past decade, we have seen a Our solutions are designed to withstand tremendous shift in the way the electric the impacts of time and nature to help grid works, how it operates, and how keep the lights on for your customers. We consumers use electricity. understand the important role energy Reliability of power has seen an storage plays on the grid, having in excess increased focus as our day-to- of 49 projects totaling more than 189 day lives rely on electricity being MWh installed around the world. Our available at all times. The costs of award-winning microgrids are providing outages have been estimated at breakthroughs in how distributed more than $150 billion a year in generation resources, including energy the United States alone. storage, are managed by customers and the utility. Major weather events are increasing in frequency and To help you solve the challenges of today severity, requiring new ways to and tomorrow’s grid, our solutions are harden our electric grid and new backed by our S&C experts. These are methods to restore service as the men and women with the skills and quickly and safely as possible. know-how to help you plan and execute the solutions you need—from concept More than 1.8 GW of operational through completion. battery energy storage is tied to the grid today. Use of stored We have designed this catalog to help energy is playing an important you, too. It is designed to help you quickly role as utilities and others build reference the wide range of solutions microgrids backed by distributed S&C offers in our specialty of electric generation to improve power power switching, protection, and control. reliability. Keep this catalog as a reference when you are researching the solutions you need. Indeed, distributed generation and microgrids are creating unique Should you need more detail than is challenges for protecting and provided here, please visit sandc.com, controlling the power grid as loads or contact your local S&C and generation sources fall outside sales representative. of traditional operations.

5 INTELLIRUPTER ® PULSECLOSER® FAULT INTERRUPTER

The IntelliRupter® fault interrupter is a breakthrough in overhead and underground distribution system protection. It features revolutionary PulseClosing® Technology— a unique means for verifying the line is clear of faults before initiating a closing operation. PulseClosing Technology is superior to conventional reclosing. It greatly reduces stress on system components as well as voltage sags experienced by customers upstream of the fault.

CONVENTIONAL RECLOSING

PulseClosing Technology drastically reduces overcurrent stress on your system, as shown here for a phase-wire to PULSECLOSING TECHNOLOGY grounded-neutral fault.

HANDLES ALL YOUR APPLICATION NEEDS FULLY COMPATIBLE WITH S&C'S INTELLITEAM® SG The IntelliRupter fault interrupter offers outstanding AUTOMATIC RESTORATION SYSTEM protection for systems through 38 kV. It features a The IntelliRupter fault interrupter can be readily integrated generous continuous-current capability of up to 800 into an S&C IntelliTeam® SG Automatic Restoration System amperes and a fault-interrupting rating of up to 16,000 (see page 34). After an IntelliRupter fault interrupter has amperes symmetrical. Models are available with or without isolated a fault, the IntelliTeam SG system makes full use an integrated, interlocked disconnect for visible air-gap of multiple sources to restore unfaulted line segments. isolation. All switching is performed internally for reliable The IntelliTeam SG system minimizes the number of all-weather operation. customers experiencing an extended power interruption, tremendously improving your System Average Interruption In standalone fault-interrupting applications, PulseClosing Duration Index. The IntelliTeam SG system can handle Technology enhances power quality by minimizing multiple contingencies, too. momentary interruptions. For example, on a radial circuit, the IntelliRupter fault interrupter can be configured so that The IntelliRupter fault interrupter is fully compatible with after one IntelliRupter fault interrupter opens to isolate a IntelliTeam SG Automatic Restoration System-equipped fault, those downstream of it open on loss of power and S&C Scada-Mate® Switching Systems, Scada-Mate CX™ send SCADA exception reports indicating the status and Switching Systems, Remote Supervisory PMH and PME reason for opening. When power returns, each IntelliRupter Pad-Mounted Gear, and Remote Supervisory Vista® fault interrupter uses PulseClosing Technology to verify Underground Distribution Switchgear. its line segment is unfaulted and then recloses to restore EASY UP – EASY ON service. It will never close into a fault. Cold-load inrush is mitigated because only one line segment is energized with IntelliRupter fault interrupters are totally self-contained. All each closing. No communication system is required to take major components—including current and voltage sensors advantage of inrush mitigation. and the control group, surge arresters, control power, and disconnect, if furnished—go up in one easy lift. The embedded high-accuracy sensors eliminate the cost, clutter, and complexity of separately mounted sensors. There’s no control enclosure or control cable to install, either.

6

AUTOMATION 38 - kV Disconnect Style IntelliRupter PulseCloser Fault Interrupter in Upright-Crossarm Mounting Configuration

Optional Integrated voltage sensors on both sides Integrated Integral power Integrated disconnect factory- of IntelliRupter fault interrupters— pole-mounting module—fed from one with optional wildlife installed and provide ±0.5% sensing accuracy across bracket—easy side of an IntelliRupter protection—provides visible wired surge the entire operating temperature range; installation; fault interrupter or, air-gap isolation for dead-line arresters integrated current sensors provide prevents tilting optionally, two integral work and facilitates operational unparalleled accuracy with +/-0.5% for power modules can testing; mechanically metering and critical-system analysis and be fed from a different interlocked with interrupters 2.0% for fault-current levels phase on each side

Disconnect OPEN/ CLOSE lever

Interrupter OPEN/ CLOSE/ Control group—features hookstick- READY removable protection and control Stainless steel Interrupter OPEN/CLOSE indicator lever—for module and communication module; base—provides on each phase—large and uses manually a multi-function status light indicates outstanding reflective materials for easy viewing, opening the control group is operating corrosion resistance, day or night; it’s attached directly to and closing Hot-line tag lever— normally, and a hot-line tag light even in the harshest the operating rod—no complicated interrupters for setting and indicates “set” tag environments linkages to break releasing tags for energized line work

Ground-trip INTELLIRUPTER FAULT INTERRUPTER block lever—for 60-Hz Ratings—50-Hz Ratings in Parentheses temporarily blocking kV Amperes, RMS ground overcurrent- protection elements Min Max BIL Cont.① Interrupting when bypassing 7. 5 15.9 110 630 16 000 IntelliRupter fault (9) (15.5) (110) (630) (16 000) interrupters 18.7 27.4 125 630 12 500 (18) (26) (125) (630) (12 500) 23.8 38 170 630 12 500 (23) (38) (170) (630) (12 500)

① 800 amperes with a minimum wind velocity of 2 feet (610 mm) per second.

For more information on IntelliRupter PulseCloser Fault Interrupters, see publications 766-30, 766-31, and 766A-31 at sandc.com. 7 INTELLIRUPTER® PULSECLOSER® FAULT INTERRUPTER

A NEW CONCEPT IN CONTROLS The IntelliRupter fault interrupter is available with several types of control groups. Each offers easy configuration and operation—plus examination of waveforms and events—using secure wireless communication to a nearby laptop computer.

Each control group includes a base-mounted, hookstick- removable protection and control module and communication module. This flexible, low-maintenance arrangement offers excellent immunity to surges and noise induced by normal power line events, such as faults and lightning strikes, and minimizes pole clutter. The IntelliRupter fault interrupter is powered from the distribution line through the integral power module(s) or by an external power supply, if furnished.

The protection and control module provides point-on- wave closing to minimize asymmetric fault current and inrush current. It features a complete set of protection External power supply— permits IntelliRupter fault and control functions, including: interrupters to be powered uu Simultaneous independent directional phase, from a pole-top transformer ground, negative-sequence, sensitive-earth, or a station battery

time-overcurrent, instantaneous-overcurrent, External power supply and definite-time elements interface box—shown with optional connections to the uu Directional blocking of overcurrent elements fiber-optic modem in the uu Over/under voltage elements control group

uu Over/under frequency elements 27- kV Compact Style for substation application. uu Phase-unbalance detection uu Synchronization check uu Cold-load pickup modifier

Comprehensive diagnostics are included, too. A sophisticated 20-channel Global Positioning System chip set provides 1-ms accurate time stamping of events to speed post-event analysis, plus IntelliRupter fault interrupter location data for your graphical information system.

The Standard Control Group is ideal for: uu IntelliTeam SG Automatic Restoration System applications uu Automatic source transfer using two IntelliRupter fault interrupters uu Automatic loop restoration using normally closed IntelliRupter fault interrupters or conventional reclosers, with a normally open IntelliRupter fault interrupter switching point uu Intelligent fuse-saving applications 15.5 - kV Pad-Mounted Style IntelliRupter fault interrupter for application in an underground segment of a feeder. uu Wide-area SCADA uu Stand-alone (non-communicating) applications

8 AUTOMATION 9 IntelliRupter Fault Interrupter Operation Screen Operation Interrupter Fault IntelliRupter Detailed logs, oscillography data, and other operational information can bereadily and accessed transferred over the wireless link, can as software upgrades. If a wide- area network radio been has furnished—and it supports configuration through its serial port—it can be configured through the wireless well. as link When fault set interrupter is an IntelliRupter for remote operation, can dispatcher test your its electrical operation as path, including control communication. SCADA the as well entire If a personal fault IntelliRupter available, computer isn’t interrupters can be opened and closed tags and hot-line set a hookstickusing from the ground or a bucket truck. Should module replacement become ever necessary, it’s performed, easily No too. need reconfigure to fault interrupters—aIntelliRupter memory module the in base remembers the all settings. which Radio or other ™ EASY OPERATION EASY For IntelliTeam SG system, source-transfer, or automatic IntelliTeam For applications,SCADA an S&C SpeedNet The Wi-Fi the transceiver in communication module provides encrypted wireless point-to-point communication personal your to computer operating under the IEEE standard. Extensive security features prevent 802.11b can open and close IntelliRupter unauthorized You access. fault interrupters, set tags, hot-line and change protection profiles the using simple operation screens when access your operation. allows permission And just group the is easy as control configure to after installation from the security parked vehicle of your up to Just establish the secure feet Wi-Fi away. connection150 ready go. to and you’re personal your using computer, The fault also with available interrupter is IntelliRupter a Battery with Group Control Backup, Standard The easy group is configure control to before installation. If desired, S&C can determine the appropriate settings for perform groupthe and/or control secondary injection verifytesting to the settings, functions, and logic (see Analysis & Design on page 42). approved communication device must be furnished. Such devices permit configuration, operation, interrogation, and software fault interrupters of IntelliRupter from maintenance the communication system to locationany access having optionalusing IntelliLink® Setup Software. supports operation for hours after loss of ac line voltage on both fault sides interrupters, of IntelliRupter permitting thus Theextended Universal dead-line switching. Control Group also includes a battery and suitable is for basicclosed-loop Restoration II Automatic System applications, IntelliTeam® applications, and applications on systems with three or more sources. The IntelliRupter fault interrupter control group configured is and operated usingsecure a Wi-Fi communication link. TRIPSAVER® II CUTOUT-MOUNTED RECLOSER

LATERAL PROTECTION A BETTER SOLUTION FOR PREVIOUSLY REQUIRED CONCESSIONS OVERHEAD LATERAL PROTECTION More than 90% of temporary faults on overhead distribution S&C’s TripSaver® II Cutout-Mounted Recloser, offered in circuits occur on laterals. Over the years, utilities have dealt system class voltage ratings of 15 kV and 25 kV, is ideally with lateral protection a couple of ways. suited for lateral circuits that frequently experience temporary faults. Some use a “fuse-blowing” philosophy: The lateral fuse clears any downstream fault within its rating. But this TripSaver II reclosers eliminate the permanent outages means service to customers on the lateral is permanently that can result when lateral fuses operate in response to interrupted—even for a temporary fault. And the utility must these temporary faults. They also eliminate the momentary deal with the high cost of service calls to replace lateral fuses. interruptions on feeders in instances where the substation breaker is tripped to save the lateral fuse during a temporary Fuse-Blowing fault. Therefore, this device significantly reduces unnecessary truck rolls and feeder blinks to keep operating costs down and electricity users happy. This self-powered, electronically controlled, single-phase vacuum fault interrupter is available for installation in new or existing-production (“R10” or “R11”) S&C-provided Type XS Fuse Cutout Mountings.

The TripSaver II recloser can provide up to four tripping operations, with a wide variety of available time-current characteristic curves. The duration of the open interval between tripping operations is user-configurable. It has a range of 0.5 seconds to 5 seconds. An option with an extended open interval of up to 30 seconds is also available. Other utilities use a “fuse-saving” philosophy: The first The vacuum interrupter resets two seconds after a TripSaver trip of the substation feeder breaker is intentionally set II recloser drops open. The operator can then reclose a so the breaker operates faster than the lateral fuse. But TripSaver II device into the mounting. all customers on the feeder experience a momentary Using a personal computer, you can configure TripSaver interruption for all faults. II operating parameters, check functionality, and view Fuse-Saving historical data. The TripSaver II recloser now includes remote communication options that provide unsolicited alerts, GPS time and coordinates, device heartbeat, and remote mode- change capability.

OVERHEAD POLE-TOP STYLE TRIPSAVER II RECLOSER 50/60-Hz Ratings Leakage Distance to Ground, kV Amperes, RMS Minimum, Inches (mm)

With With System Nom. Max BIL Cont. Interr., Sym. Porcelain Polymer Class Insulator Insulator

4000 8½ (216) 14⅞ (378) 15 15 15.5 110 100 6300 8½ (216) 14⅞ (378) 100 4000 11 (279) — 125 and 200 6300 11 (279) — 25 25 29 100 4000 17 (432)n 19 (483)n 150 and 200 6300 17 (432)n 19 (483)n

n Applicable for protection of single-phase-to-neutral circuits only in solidly grounded-neutral (multigrounded-neutral) 34.5-kV systems where leakage distance to ground meets the user’s requirement. Uses 25-kV 150-kV BIL mounting.

10 AUTOMATION 11

(not visible)— —spring-loaded -design porcelain — exceeds insulation — —for selecting automatic reclose Lower contacts Lower silver to silver; provide dual-current pivot hinge of independent path, Birdproof insulator requirements specified in ANSI cutout standards; composite-polymer silicone insulator is available, as well as NEMA B and Type S&C extended mounting brackets —high-strength cast bronze, silver silver bronze, cast —high-strength Bumper and retainer and Bumper retainer plus bumper a dampen impact on closing, reducing possibility bounce-back of Trunnion plated; surfaces around the trunnion bear on broad hinge surfaces to keep II the TripSaver recloser in alignment during closing (Its special vibration.) reduces and removal facilitates shape Mode selectorMode mode, non-reclose in operations; non-reclose or II reclosersTripSaver operate shot “one to lockout” using an instantaneous curve suitable for use when crews are working downstream of reclosers II TripSaver TripSaver II recloser in dropped-open position drops open at the end of its the if sequence operating permanent is fault — ®

—shows —shows tin-plated For more information on the TripSaver II Cutout-Mounted Recloser, see publications 461-32 and 461-33 at sandc.com. — — —hooks also —silver to silver; silver; to —silver guide II the recloser TripSaver during manual closing The S&C Loadbreak Tool Loadbreak S&C The TripSaver II status;TripSaver supports messages languages six in Liquid-crystal display screenLiquid-crystal display contained inside upper housing upper inside contained Vacuum fault interrupter fault Vacuum Attachment hooks for Loadbuster hooks for Attachment stainless steel spring provides contacthigh pressure Upper contact Upper Parallel-groove connector Parallel-groove castred brass; for ease of connection, accommodates two conductors, even of unlike size 15-kV Overhead Pole-Top Style TripSaver II Recloser II Style TripSaver Pole-Top Overhead 15-kV VACUFUSE™ SELF-RESETTING INTERRUPTER

Every utility can relate to sending crews out to replace blown If the fault is permanent, the self-resetting interrupter will fuses above overhead distribution transformers without interrupt the fault current wait a user-designated number being able to find the cause of the fault. In fact, industry of seconds, reclose, and then interrupt the fault current and sources reveal that 70% of overhead distribution transformer deenergize the transformer. (Unlike TripSaver® II Cutout- fuse operations are classified as nuisance outages, where no Mounted Reclosers, VacuFuse Self-Resetting Interrupters do other repair work is needed. not drop open on permanent outages and will remain in the cutout mounting.) After the fault has been cleared by the ‘EVEN AT THE EDGE OF THE GRID’ line crew, the self-resetting interrupter can be closed using The VacuFuse Self-Resetting Interrupter solves both these the manual operating lever on the side of the self-resetting unnecessary sustained outages and subsequent maintenance interrupter. expenses, bringing fault-testing technology closer to the edge of the grid than had previously been possible.

This depth of lateral protection not only optimizes system performance but crews’ time as well by eliminating the opportunity cost from sending teams to work on unnecessary or nuisance repairs. Instead, crews can focus on the proactive, grid-modernization projects that advance system performance and ready it for the future.

HOW IT WORKS VacuFuse Self-Resetting Interrupters solve the nuisance outages that occur on overhead distribution transformers. As A VacuFuse a single-phase self-resetting interrupter intended for use on Self-Resetting 5-kV, 15-kV or 25-kV distribution systems, it replaces fuses in Interrupter responds to a these locations. When the self-resetting interrupter detects permanent fault. a fault, its vacuum interrupter will open to interrupt the fault current.

If the fault is temporary, the self-resetting interrupter will This self-resetting interrupter comes factory-configured restore power. This saves temporary faults from becoming with a user-designated time-current characteristic (TCC) permanent outages—and the maintenance costs otherwise curve. With the ability to be placed in several manufacturers’ associated with refusing and restoration. approved cutouts, a VacuFuse Self-Resetting Interrupter can easily be placed above 5-kV overhead distribution transformers up to 25 kVA, 15-kV transformers up to 75 kVA, and 25-kV transformers up to 150 kVA when mounted in a 125- or 150-kV BIL cutout mounting.

A VacuFuse Self-Resetting Interrupter responds to a temporary fault.

12 AUTOMATION 13 8T, 10T 8T, 19 (483) 1T, 2T, 3T, 5T, 6T, 6T, 5T, 3T, 2T, 1T, Inches ② (mm) With Polymer Insulator Leakage Ground Distance Minimum, to 6KS, 7KS, 10KS 1KS, 2KS, 3KS, 5K,S Available Fuse Link Curves Link Fuse Available 17 (432) Inches ② (mm) With Porcelain Insulator Porcelain With 8K, 10K K Speed Curves KS Speed Curves T Speed Curves 1K, 2K, 3K, 5K, 6K, Leakage Ground Distance Minimum, to Sym. 6 300 Interr., Amperes, RMS 20 Cont. VACUFUSE SELF-RESETTING INTERRUPTER VACUFUSE BIL 125 29 50/60-Hz Ratings Max kV Nom. For more information on the VacuFuse™ Self-Resetting Interrupter, see S&C publications 465-30 and available 465-31, on our website sandc.com. ① 25 25 System Class For S&C XS Type Fuse Cutout mountings. Applicable on 5-kV, and 15-kV, 25-kV systems when mounted in an S&C or 150-kV 125- BIL cutout mounting. ② ① VacuFuse Self-ResettingVacuFuse Interrupters are designed to work with XS S&C Cutout Fuse mountings, Type or they mountings. retrofitted be can other approved in VacuFuse Self-ResettingVacuFuse Interrupters come ready install, to streamlining process the and commissioning lessening the amount of training for line crews. can Utilities choose from of the followingany fuse-link curves: K, Only TCC KS, T. one curve can be chosen per and the device, settings are permanently configured the factory. at VACUFUSE™ SELF-RESETTING INTERRUPTER

Construction–Side View

Birdproof-design insulator—Composite-polymer silicone or porcelain materials avoid wildlife issues.

Cypoxy™ Insulator—The Cypoxy Insulator houses the vacuum interrupter.

Vacuum interrupter—Located in the upper Cypoxy Insulator, it quietly contains and interrupts the fault without exhaust or sparking.

Hand grip—This sturdy grip allows for easy handling and installation.

OPEN/CLOSE lever—This lever allows for manual opening and closing of the vacuum interrupter and is accompanied by directional open/close markers. Note: Because the VacuFuse Self-Resetting Interrupter will automatically trip if the operator closes into a fault, the lever only indicates the last manual operation, not the Open or Closed state of the vacuum interrupter.

14 AUTOMATION 15

mode will trip : Refer only to the mode. It will turn off when When powered, this white When powered, this amber — This allows the VacuFuse Self- — — This indicates the position of This provides a convenient location — mode. Non-Reclosing mode. — mode and when de-energized. when and mode Non-Reclosing Normal mode. Normal POSITION indicator, not for the lever, vacuum OPEN/CLOSE interrupter status. LED will flash in 30-second intervals to indicate the self- resetting interrupter’s healthy state. It will turn off when in Non-Reclosing Position indicator Position vacuum interrupter, with the red flag signaling closed and the green flag signaling open. Note Non-Reclosing indicator LED will flash in 2-second intervals when the self-resetting interrupter is in Non-Reclosing in indicator System-healthy MODE-SELECTOR lever MODE-SELECTOR Resetting Interrupter to be placed in automatic Reclosing or on an instantaneous curve. feature Tag-clip for crews to tag the VacuFuse Self-Resetting Interrupter, nonstandard intentional communicating visually conditions and zoned work can areas. also be Tags easily applied to the lever OPEN/CLOSE and the pull-ring. Bottom View – Construction SCADA-MATE® SWITCHING SYSTEM

S&C’s Scada-Mate Switching System is ideal for automating overhead distribution feeders. All necessary functions—sensing, control, and communications—are provided in one economical, self-contained package. The performance capabilities, operating features, and integration of functions provided by the Scada-Mate Switching System make remote supervisory control of distribution feeders a practical, economical reality.

FEATURING THE SCADA-MATE SWITCH After the Scada-Mate Switch has isolated a fault, the Scada-Mate Switching Systems are integer-style three-pole, IntelliTeam SG system makes full use of multiple sources group-operated load interrupter switches available in voltage to restore unfaulted line segments. The IntelliTeam SG ratings of 14.4-kV through 34.5-kV. They’re factory-assembled system minimizes the number of customers experiencing on a one-piece base and include an integral stored-energy an extended power outage, and it handles multiple operating mechanism. contingencies, too. uu The control includes a high-output battery charger Circuit making and breaking are accomplished within sealed with a unique battery-management system, as well as interrupters in a controlled SF6 environment. The high- rechargeable sealed-lead starved-electrolyte battery speed linkages used to effect operation are housed within packs, powered from a user-supplied 120-Vac control the base. With no external moving parts, full live-switching source or three voltage sensors. The control additionally performance is ensured under any and all ice conditions. features a liquid-crystal display for viewing real-time Visible air-gap isolation of switched-open circuits—needed data, settings, and fault events. It offers automatic only when work on the feeder is required—is provided by an sectionalizing and overcurrent fault-detection capabilities integral, hookstick-operated three-pole disconnect. and selectable shots-to-lockout settings. All components Scada-Mate Switching Systems feature a five-time duty-cycle of each device are neatly packaged in a single corrosion- fault-closing rating of 20,000 amperes, RMS, asymmetrical. resistant enclosure, simplifying installation and minimizing The ability to close into a fault and remain capable of carrying checkout time. and interrupting current is a must for any distribution- uu The Communication and Control Unit is a custom- automation switching device. engineered package that includes a user-specified, factory-installed and -wired remote terminal unit and Two S&C current sensors and one S&C current/voltage sensor communication device; a temperature-compensated, provide three-phase monitoring of line current and single- constant-voltage battery charger with rechargeable phase monitoring of system voltage. The voltage sensor(s) sealed-lead starved-electrolyte battery packs; and a also provides 20-VA continuous battery-charging power for switch control with OPEN/CLOSE pushbuttons, switch- the control, eliminating the need for a separate distribution position indicating lamps, a disconnect Closed-and- transformer. All sensors are of S&C Cypoxy™ Insulator Latched indicating lamp, a LOCAL/REMOTE switch, and an construction and serve as support insulators for the switch operation counter. All components are neatly packaged live parts—eliminating the cost, clutter, and complexity in a single 316L stainless steel enclosure, simplifying associated with separately mounted sensors. installation and minimizing checkout time. CONTROLS TO MATCH The charger is powered by an S&C Voltage Sensor or, in a YOUR AUTOMATION OBJECTIVES higher-output version with a unique battery-management A complete S&C Scada-Mate Switching System includes a system, from a user-supplied 120-Vac control source. The Scada-Mate Switch and a control. S&C offers a variety of charger features integral load-disconnect circuitry to prevent controls to match your automation objectives: deep discharge of the batteries on loss of the ac source, uu The 6801 Automatic Switch Control provides remote plus alarms for loss of the ac source, battery low voltage, reporting of switch status points, current, voltage, watts, and charger overvoltage. It also includes circuitry to effect and vars via the DNP 2 Level 3 protocol, and it supports a battery load-test feature when used in conjunction with a S&C’s IntelliTeam ® SG Automatic Restoration System. suitable remote terminal unit (RTU).

16 AUTOMATION 17 allow Interrupter OPEN/ CLOSED indicator —wildlife —wildlife A variety of options available are protection, extension-link assemblies, and others Dead-ending provisions— conductors of attachment convenient provide three-phase monitoring three-phase monitoring provide Two S&C Current Sensors and one S&C Current/ S&C one and Sensors Current S&C Two Sensor— Voltage of line current and single-phase monitoring of system voltage (Three-phase voltage sensing sensors Voltage available. optionally is (shown) can be provided on both sides of the switch for designated normally open points on the system.) —with manual —with manual

Integral stored-energy Integral operating mechanism opening and closing capabilities 20 000 20 20 000 20 000 20 (20 000) (20 (20 000) (20 (20 000) (20 RMS, Asym. RMS, houses drive drive houses Five-Time Duty-Cycle Fault Closing, Amperes, Enclosed one-pieceEnclosed base— linkages for interrupters

Asym. Mom., 25 000 25 25 000 25 25 000 25 (25 000) (25 (25 000) (25 (25 000) (25 For more information on the Scada-Mate Switching System, see publications and 768-30, 768-93 768-31, at sandc.com.

② for hookstick for opening Amperes, RMS 600 600 600 (630) (630) (630) circuit makingcircuit Interr. Cont. and SCADA-MATE SWITCHES SCADA-MATE

BIL 110 150 200 (110) (150) (200) 60-Hz Parentheses in Ratings—50-Hz Ratings

① interrupters— 29 38 6 (15) (24) (36) 17.0 Max kV

◆ ◆ k

25 -

Up to 900 amperes continuous in ambient temperatures to 40°C (104°F ) with a System-voltage restrictions apply when the control is powered by S&CCurrent/ (30) 14.4 (10) (20) 34.5

Minimum voltageMinimum rating. Nom.

Sealed SF Disconnect operating lever— operating Disconnect and closing of integral disconnect; the disconnect may be locked or tagged in the Open position and circuit breaking circuit and accomplished are internally with no exposed moving parts

25 V Scada-Mate Switch in the Upright Mounting Configuration Voltage Sensors. Voltage ② ① minimum wind velocity of 2 feet perm) second. (0.6 ◆ SCADA-MATE® SWITCHING SYSTEM

6801 Automatic Switch Control . . .

Liquid-crystal display—for viewing real-time data, settings, and fault events

Switches, operation and diagnostic indicating lamps, and local communication port

Corrosion-resistant aluminum enclosure

Scada-Mate Switch Mounting Configurations

Vertical Tiered-outboard

18 18 AUTOMATION 19 19 uses unique Upright High-output battery charger— battery-management circuitry provide to a continuous float charge to the battery pack Rechargeable, sealed-lead starved-electrolyte battery pack User-specified communication device User-specified communication Pole-top o

For more information on the Scada-Mate CX Switching System, see S&C available publications and 768-712, on our website 768-34, sandc.com. 768-711, with swing- panel openut

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.

. SCADA-MATE CX™ SWITCHING SYSTEM

Automation needs change and grow with increased load, Visible-break disconnect. If your system practices require capacity, and demand for more reliable service. Scada-Mate a visible-break disconnect, Scada-Mate CX Switches can be CX Switches economically meet these changing needs. furnished with an integral disconnect comprised of three These three-pole, group-operated interrupter switches are single-phase, hookstick-operated blades, based on S&C’s specifically designed for automating overhead distribution proven Loadbuster Disconnect® Switch design (see page systems, either today or in the future. They feature a five- 80). The disconnect is interlocked to prevent opening when time duty-cycle fault-closing rating of 20,000 amperes, the interrupters are closed and closing the interrupters when RMS, asymmetrical, plus full live-switching performance the disconnect is open. under any and all ice conditions. Circuit making and Controls that meet your requirements. Scada-Mate CX circuit breaking are accomplished internally, within sealed Switches are available with a wide range of controls to interrupters, in a controlled sulfur hexafluoride (SF6) match your automation objectives. environment. For remote supervisory control applications, the 6801 Scada-Mate CX Switches are factory-assembled on a one- Automatic Switch Control combines sophisticated piece base and include an integral stored-energy operating automatic control schemes with remote terminal unit (RTU) mechanism. Besides electrically operating the interrupters, functionality, data logging, and advanced communication the operating mechanism provides nonelectrical mechanical capabilities in a single package (see page 18). It can manage opening and closing of the interrupters by means of a switches and automatically sectionalize a feeder based manual-operation pull-ring. The switch can be locked open on factors such as overcurrent, loss of voltage, and phase to prevent electrical or manual closing. imbalance. Multiple controls can be programmed to Scada-Mate CX Switches are also available in a manually communicate with each other using the optional operated version. On these switches, the stored-energy IntelliTeam® SG Automatic Restoration System (see page 34). operating mechanism is replaced by a factory-adjusted, Scada-Mate CX Switches can also be furnished with a spring-wound hookstick operating mechanism. custom-engineered communication and control unit that Sealed interrupters, fully enclosed base. Scada-Mate CX provides the interface between the switch and the master- Switches feature the same hermetically sealed, low-gas- station computer. It can accommodate a remote terminal volume interrupters, OPEN/CLOSE indicator, and operating device of any manufacture and can be powered by either a mechanism as Scada-Mate® Switching Systems. They’re ideal customer-supplied source or S&C Current/Voltage Sensors for installation in areas prone to icing, polluted and coastal on the Scada-Mate CX Switch. environments, and remote locales. For source-transfer applications using two Scada-Mate Compact. Scada-Mate CX Switches are 40% smaller than CX Switches, a Micro-AT® Source-Transfer Control or 6802 Scada-Mate Switching Systems, and they can be furnished Automatic Switch Control can be furnished. Both controls without the disconnect to save additional space. provide transfer in as little as 70 cycles.

Upgradable. With Scada-Mate CX Switches, you can Simple installation. Scada-Mate CX Switches are easy to purchase the features you need today . . . and easily upgrade install. Lifting means are provided for convenient rigging tomorrow. Switches can be furnished with factory-installed and hoisting. With their integral sensors and disconnect— S&C Current Sensors or S&C Current/Voltage Sensors. Or, and no vertical operating pipe—Scada-Mate CX Switches alternately, S&C sensors or sensors of other manufacture can present a clean uncluttered look. be added later. And an S&C control unit or a control of other manufacture can be added at any time.

Hookstick-operated switches can be upgraded, too, with a motor operator. It permits remote operation in sectionalizing applications that don’t require sensing and intelligent controls.

20 AUTOMATION 21 —houses drive drive —houses Optional three-phase S&C Current/Voltage sensors Enclosed one-pieceEnclosed base linkages for interrupters Manual-operation pull-ring —circuit making interrupters 6

- - and circuit breaking circuit and accomplished are internally with no exposed moving parts Sealed SF 20 000 20 20 000 20 (20 000) (20 (20 000) (20 RMS, Asym. RMS, Five-Time Duty-Cycle Fault Closing, Amperes, 25 000 25 25 000 25 (25 000) (25 (25 000) (25 Mom., Asym. Mom., — ② For more information on the Scada-Mate CX Switching System, see at sandc.com. publications and 768-712 768-34, 768-711, Amperes, RMS 900 900 (900) (900) Interr. Cont. and and Cont. SCADA-MATE CX SWITCHES SCADA-MATE BIL 110 150 (110) (150) 60-Hz Parentheses in Ratings—50-Hz Ratings ① 29 Integral stored-energyIntegral mechanismoperating with manual opening and closing capabilities (15) (24) 17.0 Max kV ★ ★ 25 (10) (20) 14.4

System-voltagerestrictions apply when thecontrol ispowered byS&C Switches furnished with optional visible-break disconnect can carry up to 900 am Nom. Minimum voltageMinimum rating.

peres continuous in ambient temperatures to 40°C (104°F) with a minimum wind ve locity of 2 feet (0.6 per m) second. Maximum allowable conductor temperature is 90°C Without(194°F). minimum wind velocity of 2 feet (0.6 per m) second, these switches can carry up to 630 amperes continuous. Current/Voltage Sensors. Current/Voltage ★ ① ② Interrupter OPEN/ indicatorCLOSED 14.4-kV Scada-Mate14.4-kV CX Switch inthe Upright Mounting Configuration Configurations Tiered-Outboard and Mounting Upright—Compact, Clearance, Mounting-Pole Upright—Extra in Available Also SCADA-MATE® SD SWITCHING SYSTEM

As energy demand and generation capacity continue to Upgradable. Scada-Mate SD Switches can be furnished with grow, utilities are looking for distribution switching systems factory-installed Current Sensors or S&C Current/Voltage that are reliable, resilient, and efficient. The Scada-Mate SD Sensors. Or, other manufactures' sensors can be added later. Switching System is particularly well-suited to meet these Moreover, you can add an S&C control unit or a control from technical, operational, and economic challenges. It includes another manufacturer at any time. vacuum interrupting technology, uses no greenhouse gases, Hookstick-operated versions of the switch also can be and is totally environmentally friendly. upgraded with a motor operator, permitting remote This three-pole, group-operated Scada-Mate SD Switching operation in sectionalizing applications that don’t require System is designed for overhead distributed automation and sensing and intelligent controls. to operate in 14.4-kV and 25-kV power-distribution systems. Visible-break disconnect. For system practices that require It is rated 900 amperes continuous and interrupting and a visible-break disconnect, S&C can provide Scada-Mate SD features peak withstand of 41,600 amperes. This switching Switches furnished with an integral disconnect comprised system has a five-time duty-cycle fault-closing rating of of three single-phase, hookstick-operated blades, based on 12,500 amperes RMS symmetrical. S&C’s proven Loadbuster Disconnect® Switch design (see With smart and flexible controls, such as the S&C 6801 page 80). The disconnect is interlocked to prevent opening Automatic Switch Control, the system can minimize the when the interrupters are closed and closing the interrupters load under outage conditions and maximize system when the disconnect is open. uptime. Scada-Mate SD Switches are factory-assembled in Scada-Mate SD Switching System features: a controlled environment where the vacuum interrupter is molded inside solid dielectric S&C Cypoxy™ Insulator uu A stored-energy operating mechanism material, giving the switching system pole-unit a robust uu Three-phase current sensors and three-phase voltage construction that protects it from impact, wildlife, dust, sensors on one or both sides of the switch moisture, and external damage. The Scada-Mate SD is ideal uu A hookstick-operable three-pole disconnect for visible air- for installation in areas prone to icing, polluted and coastal gap isolation of switched-open circuits environments, and remote locations. uu Lockout/tagout Sealed vacuum interrupters, fully enclosed base. The uu Interlocked disconnects that prevent inadvertent load Scada-Mate SD switching system uses vacuum interrupters switching that present no environmental concerns tied to greenhouse uu Provisions for mounting six surge arresters (three on each gas emission. They also are not subjugated to the same strict side of the switch) regulation governing the production of SF6 switches. uu Provisions for dead-ending Models. The Scada-Mate SD Switching system is available in uu Wildlife covers five mounting configurations, including: compact-crossarm upright, compact-crossarm upright with extra mounting-pole For remote supervisory control applications, the 6801 clearance, compact-crossarm upright compact (alley arm), Automatic Switch Control combines sophisticated compact-crossarm tiered outboard, and standard crossarm automatic control schemes with remote terminal unit (RTU) phase spacing models. Each of these configurations feature functionality, data logging, and advanced communication an OPEN/CLOSE indicator and an operating mechanism and capabilities in a single package (see page 18). Multiple can accommodate all switch-option configurations used in controls can be programmed to communicate with overhead distribution. each other using the optional IntelliTeam® SG Automatic Restoration System (see page 34). The Scada-Mate SD Switch is also available in a manually operated version; the stored-energy operating mechanism Scada-Mate SD Switches can also be furnished with a is replaced by a factory-adjusted, spring-wound hookstick custom-engineered communication and control unit that operating mechanism. provides the interface between the switch and the master station computer. Sensors: Sensing options for the Scada-Mate SD Switch include three-phase S&C Current Sensors on the pole-saddle For source-transfer applications using two Scada-Mate side of the switch, and three-phase S&C Current/Voltage SD Switches, a Micro-AT® Source-Transfer Control or 6802 Sensors on the pole-saddle side or on both the front and Automatic Switch Control can be furnished. Both controls pole-saddle sides of the switch. provide transfer in as little as 70 cycles.

22 AUTOMATION 23 —houses —houses Optional three- phase S&C Current/ sensors Voltage —circuit making and Compact (alley arm), Compact arm), (alley – Enclosed one-pieceEnclosed base drive linkages interrupters for drive Vacuum interrupters Vacuum breakingcircuit accomplished internally are with no exposed moving parts

- - Manual-operation pull-ring 12 500 12 500 RMS, Sym. RMS, Five-Time Duty-Cycle Fault Closing, Amperes, Extra Mounting-Pole Clearance, Compact-Crossarm Upright Compact-Crossarm Clearance, Extra Mounting-Pole - – stand. 41 600 41 600 For more information on the Scada-Mate SD Switching System, see publications and 775-450 775-31 at sandc.com. Peak With ② Amperes, RMS 900 900 (900) (900) Interr. Cont. and and Cont. SCADA-MATE SD SWITCHES SCADA-MATE —with l l BIL 110 (110) 125 (125) 60-Hz Parentheses in Ratings—50-Hz Ratings ① 29 (15) (24) 17.0 Max kV ★ ★ 25 (10) (20) 14.4

Switches furnished with optional visible-break disconnect can carry up to System-voltagerestrictions apply when thecontrol ispowered byS&C Nom. Minimum voltageMinimum rating. BIL equals 150-kV when there's no optional disconnect and the vacuum interrupter no optional disconnect interrupter and the vacuum BIL equals 150-kV when there's

is closed. BIL equals 150-kV with the optional disconnectwith the optional BIL equals 150-kV inter and both the vacuum is closed. rupter and the optional disconnect are closed, or both the vacuum interrupter and the interrupter or both the vacuum closed, and the optional disconnectrupter are open. optional disconnect are Current/Voltage Sensors. Current/Voltage 900 amperes continuous in ambient temperatures to 40°C (104°F) with a minimum wind velocity of 2 feet (0.6 per m) second. Maximum allowable conductor tempera ture is 90°C Without (194°F). minimum wind velocity of2 feet (0.6 per m) second, these switches can carry up to 630 amperes continuous. ★ l ② ① Integral stored-energyIntegral mechanismoperating Interrupter OPEN/ indicatorCLOSED manual opening and closing capabilities 25-kV Scada-Mate Switchin SD the Compact-Crossarm Upright Mounting Configuration Compact-Crossarm in Upright available Also and Compact-Crossarmand Tiered Outboard Configurations REMOTE SUPERVISORY SOURCE-TRANSFER VISTA® UNDERGROUND DISTRIBUTION SWITCHGEAR

Vista Underground Distribution Switchgear is available in The vacuum bottles of any three-phase fault interrupter Remote Supervisory and Source-Transfer models. Each offers way can be remotely tripped using external, user-specified the same features and benefits of manual Vista switchgear, relays. This capability permits advanced applications such as discussed in detail on pages 56 through 59. protective relay schemes using high-speed communication for closed-loop and open-loop systems. REMOTE SUPERVISORY VISTA SWITCHGEAR Remote Supervisory Vista switchgear provides automated SOURCE-TRANSFER VISTA SWITCHGEAR switching and fault protection, and it can also perform Source-Transfer Vista switchgear provides fully automatic auto-sectionalizing without tripping the main breaker. primary-selective service for one, two, or three critical loads. It includes an S&C Micro-AT Source-Transfer Control, three- Up to six load-interrupter switches or fault interrupters can ® phase voltage sensing on source ways, and internal power be motor-operated in a single unit of Vista switchgear. The provided by voltage transformers. It is available in common- motor operators may be battery powered or, optionally, self- bus and split-bus configurations. powered using internal voltage transformers. The low-voltage compartment can be furnished with a user-furnished remote terminal unit or 6800 Series Automatic Switch Control that supports the IntelliTeam ® SG Automatic Restoration System and a communication device.

Remote Supervisory Vista Underground Distribution Switchgear Switch Controls

Communication and Control Equipment Group—includes a user-specified remote terminal unit and communication device, battery Operation pushbuttons charger(s), battery packs, switch controls, and a surge protector

Position-indicating lamps

Operation counter

Connector for portable motor-operator control Motor operator—provides power operation of load- interrupter switches and three- phase-tripping fault interrupters Push-to-test lamps

24 AUTOMATION 25

® Source-Transfer Control. Source-Transfer Low-voltage compartment of Remote Supervisory Vista switchgear featuring S&C's 6800 Series Control. Automatic Switch Low-voltage compartment of Source-Transfer Vista switchgear featuring S&C's Micro-AT

— One- For more information on Remote Supervisory and Source-Transfer Vista 12 500 12 500 12 500 25 000 25 25 000 25 25 000 25 (12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25 Mom. and Second, Sym. Second, Test keys— for simulating overcurrent and loss of voltage on source Last and next keys item ① Menu keys Menu Voltage, Current, Time, Event, Configure, Test, Examineand Source-voltage indicating lamp Manual/automatic Manual/automatic selector operation switch 600 600 600 600 600 600 (630) (630) Load (630) (630) (630) (630) Cont. and Cont. Load-Interrupter Switch Load-Interrupter Dropping Underground Distribution Switchgear, see publications 682-31 and 683-31 at sandc.com. at 683-31 and 682-31 publications see Switchgear, Distribution Underground Sym. 12 500 12 500 12 500 25 000 25 25 000 25 25 000 25 (12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25 Ten-Time Ten-Time Duty-Cycle Fault- Interr., Interr., Fault- ① Amperes, RMS Fault InterrupterFault 200 200 200 600 600 600 (630) Load (630) (630) (200) (200) (200) Cont. and Cont. Dropping Sym. Short- 12 500 12 500 12 500 25 000 25 25 000 25 25 000 25 Circuit, (12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25 ① 600 600 600 (630) (630) (630) Cont. 50/60-Hz ANSIRatings—IEC Ratings in Parentheses Main Bus Current REMOTE SUPERVISORY AND SOURCE-TRANSFER SUPERVISORY SOURCE-TRANSFER AND REMOTE VISTA UNDERGROUND DISTRIBUTION SWITCHGEAR VISTA 95 BIL 125 150 (95) (125) (150) 24-character

Source-Transfer Control Source-Transfer ×

® 29 38 kV (29) (38) 15.5 Max (15.5) included with and reset reset and

— H 27 38 (12) igher ratings are possible. Consult the nearest S&C Sales Office. (24) (36) 15.5 Class liquid-crystal display Keypad— entering for programming parameters key Two-line optional overcurrent- lockout feature Overcurrent- indicating lockout lamp Automatic-transfer Automatic-transfer Ready indicating lamp System Micro-AT ① REMOTE SUPERVISORY SOURCE-TRANSFER PMH PME PAD-MOUNTED GEAR

S&C offers pad-mounted gear in Remote Supervisory Communication and Control Equipment Group and Source-Transfer PMH and PME models. PMH models use directly accessible components (see pages 50 and 51). PME models use elbow-connected components (see pages 52 and 53). Both can be furnished with S&C’s unmatched choice of tap protection provided by S&C 6800 Series Fault Fiter Electronic Power Fuses and S&C SMD-20 and Automatic Switch ® Control—or user- SMD-40 Power Fuses (see pages 70 and 76). specified remote terminal unit and All models reflect S&C’s uncompromising design and user-specified quality for ease of installation, operator convenience, communication and years of maintenance-free service. device (not shown)

REMOTE SUPERVISORY PMH AND PME MODELS Remote supervisory models feature power-operated Mini-Rupter® Switches that respond to opening and REMOTE SUPERVISORY AND SOURCE-TRANSFER PMH closing signals from a remote location. These models PAD-MOUNTED GEAR can be specified with a communication and control 60-Hz Ratings① equipment group for a completely integrated and self- kV Mini-Rupter® Fuse powered automated switching and protection package. Switch, Amperes Short- Amperes Circuit, The communication and control equipment group Amperes, Load Load RMS, includes a battery and battery charger; a voltage Nom. Max BIL Cont. Type Dropping with Dropping Max Sym. sensor for single-phase voltage sensing and control Uni-Rupter Interrupter® power; three-phase current sensing on power-operated SML-20 200En 200 14 000 switches; a user-specified remote terminal unit or 6800 14.4 17.0 95 600 600 SML-4Z 200E 200 12 500 Series Automatic Switch Control, which supports the Fault Fiter 200 200 14 000 IntelliTeam SG Automatic Restoration System; and a ® SML-20 200En 200 12 500 communication device. 25 27u 125 600 600 SML-4Z 200E 200 12 500 No external wiring or control power is required. Just Fault Fiter 200 200 12 500 connect the power cables, configure the remote terminal unit (RTU), and the gear is ready for service. REMOTE SUPERVISORY AND SOURCE-TRANSFER PME PAD-MOUNTED GEAR SOURCE-TRANSFER PMH AND PME MODELS 60-Hz Ratings① Source-transfer models use power-operated Mini-Rupter Short- Switches to provide fully automatic three-pole switching kV Mini-Rupter ® Switch, Fuse Amperes Circuit, of the sources serving critical loads that require a high Amperes, Load Amperes Nom. Max BIL Cont. Type RMS, Sym. degree of service continuity. A field-programmable Dropping Max S&C Micro-AT® Source-Transfer Control continuously SME-20 200En 14 000 monitors the status of the two sources and, if voltage 14.4 17.0 95 600 600 SME-4Z 200E 12 500 on the source serving the loads is lost, automatically Fault Fiter 200 14 000

initiates switching to transfer to the alternate source, SME-20 200En 12 500

thus restoring power to the loads. 25 27u 125 600 600 SME-4Z 200E 12 500 Fault Fiter 200 12 500 Source-transfer models are totally self-contained switching and protection packages. Each is completely ① Consult the nearest S&C Sales Office for 50-hertz ratings. u 25-kV models equipped with Fault Fiter® Electronic Power Fuses are rated factory-assembled and ready for installation. No external 29 kV max. wiring or control power is required. n SMU-20 Fuse Units are available in ratings through 200K amperes as well as 200E amperes.  Applicable to solidly grounded-neutral systems only, with fuses connected by a single-conductor, concentric-neutral type cable to a transformer or transformers. Rating is 9,400 amperes, RMS, symmetrical for all other applications.

26 AUTOMATION 27 indicates permits permits for manual manual for -control provides a — for attaching remote- — provide provide provide access to input connectors includes pushbuttons, OPEN/CLOSE Decoupler handle—Decoupler the of decoupling convenient switch from the switch operator for source-transfer of functional testing schemes and exercising of the switch operator, without disturbing the power circuit Switch-position target— whether a Mini-Rupter Switch is open closed or shows indicator— Decoupler whether the switch operator is coupled to a Mini-Rupter Switch Optional remote Optional receptacle control station; permits Open/Close area adjacent from operations shaft— Charging charging in the event power is lost provides a continuous float charge to (behind protective cover) protective (behind Bolted covers— Bolted and receptacles and terminal blocks Dual batteryDual packs— power for the installation Switch control— Switch a LOCAL/REMOTE switch, and an operation counter show switch-operator status Decoupler meansdecouple to switchfrom switch operator Battery charger— battery packs; features integral load-disconnect circuitry to prevent deep discharge of batteries after an extended loss of an ac source, and it includes a battery load-test feature and alarms for loss of an ac source (field selectable), battery low voltage, or charger overvoltage Switch Operator — Operator targets— Operator Closed) or (Open position and discharged) or (charged Source-Transfer Control Source-Transfer

® for charging and and for charging Dual-purpose manual handle— tripping switch operators when control power is not available S&C Micro-AT microprocessor-based, field-programmable microprocessor-based, For more information on Remote Supervisory PMH Models, see publication 664-31. For Source-Transfer PMH Models, see publications 663A-30 For Remote and 663A-31. Supervisory PME Models, see publication 666-31. All of these publications are available at sandc.com. permit OPEN/CLOSE pushbuttons— electrical operation local Source-Transfer PMH Pad-Mounted Gear Pad-Mounted PMH Source-Transfer Remote Supervisory Pad-Mounted Gear PMH HIGH-SPEED FAULT-CLEARING SYSTEM

Industrial and commercial power users are increasingly less The relays communicate with each other through a high- tolerant to the frequency and duration of outages. Some speed fiber-optic cable network. Relays use the established utilities have lost such customers to competitors offering transmission-relaying concepts of Permissive Overreaching more reliable service. Transfer Trip (POTT) and Directional Comparison Blocking (DCB) to ensure only the fault interrupters on either side of a S&C’s High-Speed Fault-Clearing System was specifically faulted backbone cable section open. SCADA isn’t required developed to address this issue. It can be configured to but can be readily integrated. be essentially a no-interruption system for underground applications. A fault occurring on any segment of the system Any number of switchgear units can be used in the system, is automatically isolated. But service to the loads is not applied in a closed-loop or an open-loop configuration. In interrupted (or the interruption is minimal). Communication- either case, a backbone feeder fault is cleared in 6 cycles or dependent tripping is a key element of the design. less; there’s no need to trip the substation circuit breakers.

The system uses specially configured S&C Remote In a closed-loop application—such as the one shown on Supervisory Vista® Underground Distribution Switchgear page 29—both ends of the loop must be fed from the same (see page 24). Each fault-interrupter way of the gear substation. Load will not be lost while a fault is being cleared, associated with the backbone feeder is equipped with a although some customers may experience a voltage dip. multifunction, microprocessor-based relay. Each substation In an open-loop application, feeders from different circuit breaker feeding the loop of switchgear units is also substations can be used; an open switching point is equipped with such a relay. required in the loop. Some customers may experience a three- to four-second loss of voltage while the normally open switch is closed.

Remote Supervisory Vista® Underground Distribution Switchgear

28 AUTOMATION 29

4 3

Relays 5 and 6 each recognize the other has sensed fault current flowing in the direction of its respective arrow and tripsits respective fault interrupter. The faulted cable section is de-energized, but service to the loads served by Vista Units B and C is uninterrupted. If a fault occurs, current will flow to it through both substation breakers. circuit

For more information on the High-Speed Fault-Clearing System, see publication 682-60 at sandc.com.

2 1 Typical operation of High-Speed Fault-Clearing System Fault-Clearing High-Speed of operation Typical in a closed-loop application closed-loop a in Relay 5 detects fault current flowing in the direction of its respective as arrow, does Relay 6. Each relay sends a “forward fault detected” signal to the other relay. Normal configuration. INTELLICAP® 2000 INTELLICAP® AUTOMATIC CAPACITOR CONTROLS, INTELLINODE™ INTERFACE MODULE 6801M AUTOMATIC SWITCH OPERATOR

IntelliCap 2000 Automatic Capacitor Control IntelliCap Automatic Capacitor Control

INTELLICAP 2000 AUTOMATIC CAPACITOR CONTROLS INTELLICAP AUTOMATIC CAPACITOR CONTROLS IntelliCap 2000 Automatic Capacitor Controls are two-way For distribution capacitor switching applications that do not communicating controls ideally suited for distribution require an interface with the volt-var optimization systems capacitor bank applications with volt-var optimization or SCADA, IntelliCap Automatic Capacitor Controls offer an systems. They can be furnished with a variety of factory- ideal solution. They provide local-control switching strategies installed communication devices, including SpeedNet™ based on time, temperature, voltage, and—optionally—vars Radios (see page 40). and current.

IntelliCap 2000 controls offer a wide range of software- selectable functions, including voltage, time, temperature, IntelliNode Interface Module time-biased voltage, and time-biased temperature control strategies. Var and current control strategies are optionally available. Voltage/temperature and SCADA-override strategies are provided, too; when enabled, a control returns to its regular control strategy after receiving a SCADA command.

IntelliCap 2000 controls automatically calculate voltage change (and kvar change, if applicable) caused by capacitor-bank switching, and they offer automatic adjustment for daylight savings time and holidays, daily INTELLINODE INTERFACE MODULE limits on automatic switching operations, and undervoltage With S&C’s IntelliNode Interface Module, the IntelliTeam® SG and overvoltage protection. Automatic Restoration System (see pages 34 and 35) works with a wide array of new and existing DNP 3.0-compatible Neutral input sensing is optionally available and can lock intelligent electronic devices from other manufacturers, out the capacitor bank if blown fuses or stuck switch poles including Cooper, Nu-Lec, SEL, and ABB protection relays, and are detected. recloser controls.

30 AUTOMATION 31 Fault Interrupters, Fault ® PulseCloser ® When the associated distribution switches or disconnects beenhave fitted with voltage and current sensing, the operator can be furnished with, or6801M upgraded to, Restoration This SG Automatic System. S&C's IntelliTeam operators work together to as enables multiple 6801M with IntelliRupter teams 6800 and IntelliNode™ Controls, Series Switch Automatic Interface Modules.

®

Switches and Alduti-Rupter Switches ®

1043-30 and 1043-31. For Automatic the1043-30 and 6801M 1043-31. Switch Operator, see publication 1045M-30. All of these publications are available at sandc.com. Automatic Capacitor Controls, see publications For more information and 1022-31. 1022-30 on the IntelliNode Interface Module, see publications For more information on IntelliCap 2000 Automatic Capacitor Controls, see publications For more information and 1024-30 1024-31. on IntelliCap

6801M AUTOMATIC SWITCHAUTOMATIC OPERATOR 6801M 6801M Automatic Switch Operator6801M The 6801M Automatic Switch Operator Switch monitors Automatic the entire The 6801M switching cycle and can automatically corrective take action of a problem. the in event particularly It is designed operateto Omni-Rupter 6801M AUTOMATIC SWITCH6801M OPERATOR Operator Switch a fully is Automatic The 6801M integrated, microprocessor-based operator combines that electromechanical components, a remote terminal unit and a single in communications circuitry, control (RTU), package for enhanced installation flexibility and reliability, and reduced cost. Switches, which featured are Switches, See on pages also the 86 93. to Smartdiscussion on S&C’s Grid Services on page 47.

INTERFACE MODULE ™ AUTOMATIC ® INTELLICAP 2000 2000 ® INTELLICAP CAPACITOR CONTROLS, INTELLINODE CONTROLS, CAPACITOR IPERC GRIDMASTER® MICROGRID CONTROL SYSTEM

UNSURPASSED RESILIENCY AND ENERGY SECURITY CONTROLLER SPECIFICATIONS INCLUDE: The GridMaster Microgrid Control System is a community of uu Power requirement: intelligent power controllers (IPCs) networked in a distributed ¡¡ Input: 9 to 36 Vdc (< 20 W) architecture. uu Serial communications: The GridMaster system operates as a hive concept, where each IPC represents a specific piece or group of equipment. ¡¡ 8 bits / No stop / 1 parity All the IPCs are in constant peer-to-peer communication ¡¡ Minimum/maximum baud: 300 / 115200 with each other. The combined computer-processing uu Ethernet communications: capabilities enable complex optimization algorithms and provide intelligent load balancing and prioritized microgrid ¡¡ IEEE 802.3 Ethernet interface operations. ¡¡ 1000/100/10 base-T The distributed design and construction ensures all electrical ¡¡ IPV6 standard; IPV4 compatible demand is satisfied while maximizing efficiency and uu Control boot time: eliminating single points of failure. Ultimately, the GridMaster ¡¡ Typical: 30 seconds; maximum: 120 seconds system is an economical and effective way to achieve maximum energy independence by providing: uu Front panel indicators: ¡¡ Green power LED display illuminates when on uu Reduced energy costs ¡¡ Recessed power switch uu Reduced fuel consumption and CO2 emissions uu Reduced maintenance uu Weight: uu Optimal integration of renewable energy and energy ¡¡ Base unit: 9.5 lbs. (4.3 kgs) storage assets ¡¡ Communication modules: 0.21 lbs (0.1 kgs) each

uu Mechanical vibration: GRIDMASTER INTELLIGENT POWER CONTROLLER ¡¡ Vibration: 24 to 2000 Hz, all axis ¡ Key features of the GridMaster IPC include: ¡ Shock: capable of seismic Zone 4 uu Industry-leading cybersecurity Authorization to uu Environmental: Operate (ATO) accreditation by the U.S. Department ¡¡ Humidity: 95% non-condensing of Defense ¡¡ Operating temperature: -25°C to 70°C (-13°F to 158°F) uu Distributed peer-to-peer communications to ¡¡ Storage temperature: -40°C TO 85°C (-40°F to 185°F) eliminate the single points of failure common in ¡¡ Passively cooled centralized control systems ¡¡ Adequate for operation at altitudes up to 2,000 meters uu Redundant-controls architecture to provide resiliency (6,562 feet) uu Automatic, intelligent optimization of generation and load assets IPERC is a wholly owned subsidiary of S&C Electric Company.

uu Rapid re-integration of lost assets through self-healing

uu Readily scalable to adapt to changing microgrid configurations

uu Automatic demand response using internal algorithms or external signal

uu Workability with new and legacy power generation equipment

uu Compatibility with all common industrial communications protocols, including Modbus and CAN

uu Wired or wireless encrypted control communications

32 AUTOMATION

33 (330) 13.00 (305) 12.00 (44) 1.75 8.25 (210) 9.25 (235) ∅ .30 4.10 104)

(356) 14.00 (356) 14.00 19.0 4.60 (117) (483) (97) 3.82 More information about IPERC Gridmaster Microgrid Control System is available at sandc.com. 4.10 (104) Dimensions in inches (mm) Intelligent Power Controller Power Intelligent Intelligent Power Controller (Rack Mount) (Rack Controller Power Intelligent Dimensionsin inches (mm) INTELLITEAM® SG AUTOMATIC RESTORATION SYSTEM

Introduced in 1996, the IntelliTeam Automatic Restoration System was the first product of its kind. The system uses peer-to- peer communication with distributed intelligence to track system conditions and quickly initiate service restoration. It was way ahead of its time. In 2003, S&C brought out the IntelliTeam® II Automatic uu Rapid Self-Healing, which isolates faulted section and Restoration System—an order of magnitude more powerful restores service to non-faulted sections in seconds (An than the original. Highly scalable, it supports complex system example is shown on page 35.) architectures and multiple tie points from multiple sources. uu Communication Enhanced Coordination, It uses teams of switches to restore service to affected circuit which improves feeder segmentation and reduces segments when faults or loss-of-source events occur, and it momentary interruptions (In a system where manages all of this based on allowable line loading. Moreover, IntelliRupter® PulseCloser® Fault Interrupters share each team can have up to eight switches, arranged in radial or the same protection curve, only the IntelliRupter looped circuits, or a combination of both. fault interrupter closest to a fault will open.) Now, S&C has advanced IntelliTeam technology with the uu Post-Restoration Load Management, which protects IntelliTeam SG Automatic Restoration System. It’s even more reconfigured system from loading that exceeds the robust and easier to use and offers such important features as: capabilities of the system uu IntelliTeam® Designer, which simplifies system uu Closed-Loop Operation, which eliminates the need for a configuration (Just draw a single-line diagram of your normally open switching point in applications where the distribution circuits, and the IntelliTeam Designer loop is served from two substations application will apply all of the IntelliTeam SG settings to uu Site Automation Testing, which lets you emulate all of the associated team members automatically.) events using actual site parameters and peer-to-peer communication and—optionally—operate switches uu Instant Replay, which collects event logs from affected devices and provides the ability to replay the events on the systems single-line diagram

IntelliTeam Designer workspace

IntelliRupter® PulseCloser® Fault Interrupter Remote Supervisory Vista® Underground Distribution Switchgear

34 SOFTWARE 35

SG Automatic Restoration System Restoration Automatic SG SG Automatic Restoration System Restoration Automatic SG SG Automatic Restoration System Restoration Automatic SG ® ® ® 1 3 2 Rapid Self-Healing Loss of SRC3, Self-Healing Rapid IntelliTeam Rapid Self-Healing Loss of SRC3, IntelliTeam Rapid Self-Healing Loss of SRC3, IntelliTeam using actual switch controls and communication devices, go to sandc.com/it2a. to go devices, communication and controls switch actual using For interactive demonstrations ofthe IntelliTeam SG system derived from real test scenarios ,

® SD Switching Systems; Systems; Switching SD For more information on the IntelliTeam SG Automatic Restoration System, see publication 1044-34 at sandc.com.

® Underground Distribution Distribution Underground

® often-outdated historical loading data. , and Scada-Mate

MAXIMIZES EFFICIENCY OF YOUR SYSTEM IMPROVES SERVICE RELIABILITY A TRULY UNIVERSALA TRULY SOLUTION the IntelliTeam sufficient the isn’t IntelliTeam If there capacity source, in a single Restoration will instead useSG Automatic self- System restorehealing to service outaged many as to sections as possible sources. available all using If a fault sufficient occurs and there’s capacity source, in a single use Restoration will SG Automatic System the IntelliTeam Rapid Self-Healing, opening switches all surrounding the to faulted and then team one closing restore switch to service outaged many as sections possible as source. that using The illustration the an example shows right at of the Rapid Self- Restoration SG Automatic System’s IntelliTeam Healing This when feature. feature, enabled, can significantly decrease the self-healing response minimizing time the by operations. switching of number Circuits can be routinely loaded higher, and the IntelliTeam Circuits can be routinely and loaded the IntelliTeam higher, overloading prevents System Restoration Automatic SG during restoration. The capacity excess is sources of adjacent used restore to service unfaulted to segments, helping defer the need for system upgrades tie and circuits allowing to you traditionalthat planning criteria wouldn’t permit. Restoration capacity based is on real-time loading and actual feeder capacity, not Unlike time-coordinatedUnlike restoration systems must that be carefully SG Automatic preprogrammed, the IntelliTeam logic operating sophisticated System’s Restoration can automatically restore service under multiple event quickly it outages, major or storms During contingencies. returns service customers many as possible, to as freeing personnelyour deal with to system repairs. The system of Minutes Interruption,minimizes Customer improving your reliability ratings. With the IntelliTeam SG Automatic Restoration SG Automatic System, With the IntelliTeam restoration proceeds without the inherent delays a in dispatcher-operated or controlled centrally system. The SG systemmonitors real-timeIntelliTeam current and voltage throughout the system and information uses this make to smart switching decisions restore to service when outage on occur events the system. Switchgear. Scada-Mate CX™ The IntelliTeam SG Automatic Restoration an is SG Automatic System TheIntelliTeam It interoperability. open platform offering unmatched new orcan existing automate circuits. It works with S&C fault interrupters; Scada-Mate IntelliRupter Remote Supervisory Pad-Mounted and PME PMH Gear; and Remote Supervisory Vista INTELLITEAM® FMS FEEDER MANAGEMENT SYSTEM

BENEFITS OF DEVICE MANAGEMENT DEVICE DATA & FILE RETRIEVAL Advanced tools are needed to efficiently manage an uu File Retrieval. Utilities often use traditional methods entire fleet of automated devices, saving engineers and and tools to access waveform and event files—either system operators time. This also allows them to work more one device at a time or by rolling a truck. IntelliTeam effectively, thus further leveraging the smart grid investment FMS facilitates bulk retrieval, both on demand and on to improve reliability. a scheduled basis. uu Data Collection. Collecting, organizing, managing, and To fully realize the benefits of a self-healing smart grid, displaying relevant data is often done via SCADA and a S&C offers the IntelliTeam FMS Feeder Management System. historian, but IntelliTeam FMS does this automatically for This enterprise software can significantly improve a utility’s S&C devices and does so while collecting points SCADA operational efficiency and overall reliability by managing systems can’t access, such as setpoints. devices and providing insightful data analytics from an entire fleet of S&C automated smart grid devices. uu Reporting. Many utilities spend considerable time defining, generating, and maintaining basic device status SAVING OPERATIONAL TIME reports. IntelliTeam FMS generates several key reports By leveraging IntelliTeam FMS software features to automate and custom dashboard displays, which can be exported. otherwise manual tasks done on a point-by-point, device- by-device basis, six to eight hours per device can be saved DEVICE CONFIGURATION annually through improving and automating tasks in three uu Settings Management. Configuring new devices operational areas: and changing device settings all can be managed by IntelliTeam FMS. Settings changes also can be applied DEVICE TRACKING & MAINTENANCE MONITORING across multiple devices, saving many hours when a uu Device Details. The IntelliTeam FMS displays data related fleet-wide change is required. to individual devices, enabling a user to diagnose many uu Change Logs. Without change logs, diagnosing a issues quickly. Available data include diagnostics, team problem with a device becomes a matter of detective status, calibration, settings, and more. work. IntelliTeam FMS solves the mystery by logging who, uu Dashboards. Many utilities investigate devices manually when, and what was changed. or react to SCADA alarms. IntelliTeam FMS offers an uu Device Filtering. IntelliTeam FMS allows a user to work automated and proactive approach with both table and with almost any group of devices based on a wide array graphical dashboards that automatically track Team of filtering options. This saves a lot of time when working Ready statuses and monitor battery health, firmware with a subset of devices. versions, and more. uu Alert Management. Addressing the numerous alerts INCREASING RELIABILITY devices generate can be a time-consuming task. IntelliTeam FMS’s features help utilities identify issues IntelliTeam FMS makes it easy to filter down to only before they result in a device not operating as intended. those devices and alert types that are relevant. Misoperations can cause outages or lost opportunities to leverage grid automation to restore power. With a fleet of Dashboards 400 devices, 10 such misoperations can be avoided annually in three process areas:

HISTORICAL TREND ANALYSIS uu Dashboards. Not all issues are easy to spot, whether they are intermittent or isolated. IntelliTeam FMS dashboards make it easy to spot hidden trends in device data. uu Reporting. Besides dashboards, IntelliTeam FMS reporting also provides insights into device data, ranging from maintenance needs to abnormal statuses. uu Alert Management. Alerts are generally used to identify specific issues quickly, but analyzing alert trends over time also can help identify systemic issues.

36 SOFTWARE 37 Settings Management Device Filtering/Working Sets Filtering/Working Device

®

™

. Plus Automatic Plus

® IntelliTeam FMS communicates communicates FMS IntelliTeam . IntelliTeam FMS has the has ability FMS . IntelliTeam For more information on the IntelliTeam Feeder FMS Management System, see S&C publication or visit 1048-31, sandc.com/FMS. . Utilities can create ideal can. Utilities configurations create . Filtering in IntelliTeam FMS is primarily is FMS IntelliTeam in . Filtering . Knowing what was changed a device in . Team-Ready statuses. Team-Ready teams and reasonswhy Interface Modules, and IntelliCap Fault Interrupters, 5800 Fault and 6800 Controls, Switch

® ™

. IntelliTeam FMS enables a review of alerts FMS related . IntelliTeam Adaptive Communications. Adaptive to communicate with only communicate a single a timeto on device at each with Communicating randomfeeder. cause devices could bottlenecks the head-end at unit if multiple devices on a requests concurrently. to responding feeder are with a set number of devices concurrently for collecting various types of data, and it adapts network-response to will not FMS Iftime. responses delayed, are then IntelliTeam schedule new data-collection requests the previous until requests completed. are Staged Communications Staged User-configurable data-collection intervals The frequency at which IntelliTeam FMS contactsThe frequency FMS a device which IntelliTeam at for various types of data can be adjusted from seconds to baseddays on a utility’s needs and the bandwidth available. Change Logs Change Device Filtering Device an outagecan prevent if the change intended wasn’t to be permanent. used working allow to with specific sets of devices, but the system also can be used find to devices with certain statuses or settings must that be addressed. Settings Templates Alerts devices fallingto out of Ready a being as state, such set to operation.manual for their devices and thenreplicate those settings their to fleetentire manual templates. saved This using avoids settings errors and the use of factory default settings. Dashboards a Readyaren’t in state Communication issues displayed. are a leadingare cause falling out of teams of a Ready state, offers FMS a dedicatedso dashboard IntelliTeam track to communication statuses. u u u u u u u u DEVICE COMMUNICATION DEVICE SUPPORTED DEVICE TYPES DEVICE CONFIGURATION DEVICE TEAM STATUS MONITORING STATUS TEAM IntelliTeam FMS is designed is with S&C communicate to FMS devices IntelliTeam via fiber-optic cables and S&C radio, as such SpeedNet Capacitor Controls. u u u u u u u u S&C’s IntelliTeam FMS Feeder Management provides FMS System IntelliTeam S&C’s powerful monitoring and data analytics for S&C IntelliRupter Radios or those from third-party vendors. Several technologies adapt the bandwidth to available: FMS help IntelliTeam PulseCloser IntelliNode INTELLITEAM® CNMS COMMUNICATION NETWORK MANAGEMENT SYSTEM

As the number of networked grid devices increases, so Benefits include: does the difficulty of managing network communication. uu Better network awareness and control. Periodic data Designed to meet the specialized needs of electric utilities, are collected from each radio, with statistics and settings S&C’s IntelliTeam ® CNMS Communication Network displayed in tables and dashboards. Radio-configuration Management System simplifies monitoring and management settings for SpeedNet Radios can be changed easily from of S&C SpeedNet™ Radio and SpeedNet™ SDR Software the CNMS interface. Defined Radio networks supporting SCADA and distribution uu Extensive network-visualization capabilities. automation applications. Interactive Google Maps interface with color-coded The IntelliTeam CNMS Communication Network Management link strengths and Google Earth export capabilities for System provides utilities with a comprehensive view of offline analysis. network configuration and performance through a browser- uu Easier problem identification. Data filters and visual based interface. It lets authorized users monitor near real- indicators for alarms and link qualities help administrators time and archived data on radio networks of all sizes. Users quickly identify problem radios. can manage each individual radio and effect configuration uu Greater operational efficiency. Network administrators changes, data backup, and remote firmware upgrades. can perform their duties in a fraction of the time compared to using the Client Tool.

Interactive Deployment View with Color-Coded Links

38 SOFTWARE 39 For more information on the IntelliTeam CNMSCommunication Network Management System, see publications at sandc.com. and 1073-30 1073-31 Alarms Help Administrators Quickly Administrators Identify Help Alarms Radios Problem Radio Configuration Settings for SpeedNet Radios Can Changed Be Easily from the Radios Tab SPEEDNET™ RADIOS SPEEDNET™ CELL EDGE GATEWAY

Reliable communication networks are a critical component As part of the SpeedNet Radio family, the SpeedNet™ ME of SCADA and grid-automation systems. When choosing a Mesh End-Point Radio is designed specifically for the communication solution, a few key parameters to consider communication needs of end-node SCADA devices. It are resiliency, latency, and security. provides a fast link to its next-hop neighbor(s), which can be a SpeedNet Repeater Radio that is part of a SpeedNet Radio Built-in redundant paths and no single point of failure mesh network or the actual destination. Because it is used as are inherent features of SpeedNet mesh radio networks, an end point only, the SpeedNet ME Mesh End-Point Radio which provide the resiliency required by mission-critical does not have the ability to perform as a repeater, headend, grid applications. These radios also support point-to-point or gateway. It does, however, connect to a SpeedNet Radio and point-to-multipoint modes of deployment. S&C’s mesh network that is capable of providing secure, long-range SpeedNet mesh radios provide the reliable, high-throughput communication with high message rates. communications essential to the IntelliTeam® Automatic Restoration System, and SCADA-only applications. SpeedNet™ ME Mesh End-Point Radio SPEEDNET™ RADIOS SpeedNet Radios deliver low-latency, self-healing performance. They are equipped for high-volume data transmission, enabling automation in difficult-to-access areas. A peer-to-peer mesh network of SpeedNet™ Radios is easy to set up and maintain. The radios automatically build routing tables that define message paths. If a node is lost, the radios quickly establish a new path.

Redundancy for head-end radios and gateways improves communication reliability. Such redundancy is important SPEEDNET™ SDR SOFTWARE DEFINED RADIOS for head-end radios because they are the link to the The S&C SpeedNet SDR Software Defined Radio is available customer enterprise network. Operating in the unlicensed in the 400-MHz and 900-MHz licensed bands. Both bands 900-MHz ISM band, a SpeedNet Radio furnished with an support a single-channel as well as a dual-channel radio. omnidirectional antenna has a typical range of several miles, These radios optimize parameters across three axes: power depending on the terrain and clutter. If needed, a SpeedNet output, channel size, and link speed. Repeater can be installed to increase transmission range The adjustable link speed allows for variable data-transfer and provide alternate nodes for message routing, without rates. The SpeedNet SDR radio offers performance second to the need to reach a point-to-multipoint tower to extend none in the commercial market today. The SpeedNet SDR communication range. radio over-the-air data rate provides the bandwidth that can enable Ethernet connectivity within as small as a 12.5-kHz SpeedNet 900 Radio channel, which provides easier application-integration support, including emerging automation applications.

The SpeedNet SDR radio uses a mesh-routing protocol to eliminate single-point network failures. It also uses S&C expertise in high-speed, low-latency communication systems to meet the specific needs of the IntelliTeam ® SG Automatic Restoration System and other grid automation and control protocols.

40 COMMUNICATIONS 41 ①

① FCC, IC 256-bit AES, ECC 3G: 850 MHz, 1900 MHz 100-200 milliseconds MHz, 1900 MHz, 2300 MHz SpeedNet™ Cell Edge Gateway

4G: 700 MHz, 850 MHz, 1700/2100 10 Mbps10 downlink, 5 Mbps uplink Radio @50 kHz 228 kbps SpeedNet SDR 9x9 FMS FEEDER MANAGEMENT SYSTEM FCC, IC ® 256-bit AES

Setup Software use a secure, to high-speed 928-960 MHz 928-960 ® Radio @25 kHz 114 kbps SpeedNet SDR 9 SpeedNet Cell Edge Gateway Edge Cell SpeedNet

CONNECTIVITY FOR MONITORING AND CONTROL CONTROL AND MONITORING FOR CONNECTIVITY CONNECTIVITY FOR SCADA AND AND SCADA FOR CONNECTIVITY INTELLITEAM EXTEND CONNECTIVITY TO REMOTE DEVICES When used conjunction in with a private field area network, FMS the SpeedNet the allows IntelliTeam Edge Gateway Cell Feeder Management and other applications System such IntelliLink as Utilities withoutUtilities a private wireless network can use the SpeedNet their as primary Edge Gateway Cell network for connectivity. FMS IntelliTeam and/or SCADA The SpeedNet also provides Edge flexibility Gateway Cell expandto connectivity remote devices outside to the area of existingcoverage utility field area networks. By adding devices, communication enable to you monitoring functions.and control The SpeedNet can Edge Gateway Cell be deployed unique cases provide many in to connectivity none. was there previously where cellular path.cellular COMPARISON MATRIX COMPARISON Radio @ 25 kHz 113.4 kbps SpeedNet SDR 4x4 SpeedNet™ SDR Software Defined Radios 256-bit AES Radio 406-430 and 450-470 MHz FCC, IC, ETSI/CE, South Africa 56.7 kbps @12.5 kHz 28 milliseconds28 milliseconds 14 milliseconds 14 milliseconds 7 SpeedNet SDR 4 Mesh Radio SpeedNet™ ME 128-bit AES 902-928 MHz New Zealand New 10 milliseconds 10 SpeedNet 900 Radios FCC, IC, Brazil, Australia, Radio 600 kbps 300 kbps SpeedNet™ SpeedNet™ For more information on SpeedNet Cell Edge Gateway, see S&C publications These publications and 1076-30 1076-31. are available at sandc.com. see S&C For publications more information and 1074-31. 1074-30 on SpeedNet SDR Software Defined Radios, see S&C publications and 1075-31. 1075-30 For more information on SpeedNet Radios, see S&C publications For more information and 1072-31. 1072-30 on the SpeedNet ME Mesh End-Point Radio, Latency Many factors affect the speed and performance of cellular devices, including proximity to a cell site, the capacity of the cell site, the surrounding terrain, placement of the Data Rate Frequency Encryption Idle ChannelIdle Certifications SPEEDNET™ CELL EDGE GATEWAY EDGE CELL SPEEDNET™ The SpeedNet provides a flexible Edge Gateway Cell for securely devices to way leveragenetwork. a cellular Data-intensive applications better are managed an by networkalternative because backhauling large volumes the distributionof data over automation network could compromise self-healing during an outage. Cellular networks already service your in area provide a cost- effective opportunity for monitor utilities to and control a secondarygrid devices over communication network. SpeedNet Software SDR Defined Radio By offering the flexible balance of data rates, propagation range, and interference SpeedNet mitigation, S&C’s radio SDR automation. network grid mesh for resilient a provides ① cellular device inside equipment, radio-frequency interference, the number of other devices attempting to use the same spectrum weather. and resources,carrier, the data plan from wireless ANALYSIS DESIGN

S&C’s Power Systems Solutions team of automation-system planning, energy storage, renewable energy, and engineering experts has vast expertise in the real-world application of technology for improved grid reliability. They’re well-suited to perform the study, engineering and design, project management, and field services needed to deliver a complete smart grid solution. These services can be furnished individually or as a complete solution.

ANALYTICAL STUDIES uu Short-circuit studies. These help determine S&C’s highly trained Power Systems Solutions staff can currents flowing in a power system under assist you with a variety of substation and distribution fault conditions. system analytical services. These services can be furnished uu Arc-flash studies. S&C evaluates the incident individually or as part of a complete EPC solution with energy and arc-flash boundary of energized equipment. S&C also supports a variety of important electrical equipment, calculated in accordance studies, including but not limited to: with the IEEE 1584 and NFPA-70E standards. uu Overcurrent protective device coordination uu Power quality studies. These include site surveys studies. Use this research to select appropriately and measurements to evaluate the impact of rated protective devices and their settings. The voltage sags, interruptions, motor starting, or objective is to minimize the impact of short- flicker on end-user equipment. circuits by isolating faults as quickly as possible while maintaining power to the rest of the system.

42 SERVICES 43 Issued for construction (IFC) drawings (IFC) construction for Issued programmingSystem and commission Project close-out manuals Indexed As Packages Drawing Built Wiring diagrams room design Control sections, layouts, and details Physical details and layouts Foundation specifications construction and Equipment Bills of material drawings layout and arrangement Bus Protection and logic control diagrams settings and layout panel Relay programmingSystem and commissioning points lists SCADA design and development screen SCADA design Historian Configuration files and utility integration developer, ISO, support engineering On-site Single-line drawings Civil, electrical, and structural engineering 30%, 60%, and 90% packages design Dc and ac schematics drawings Grounding Lightning protection drawings u u u u u u u u u u u u u u u u u u u u u u u u u u ENGINEERING SERVICES ENGINEERING S&C’s engineering and system design services provide services provide design system and engineering S&C’s the best long-term toughest value your to power system challenges. Our professional engineers dedicate themselves being to specialists their in fields and applying knowledgethat project your toward vision. S&C engineers the throughout licenses engineering professional hold differentiate we how Let you show us United States. qualityourselves commitment to through S&C’s and in services. world-class through customers our delighting Preliminary Detail Design and u u u u u u u u u u u u u u u u u u u u u u u u u u Protection and Control Design Control Protection and Engineering SCADA SupportConstruction These confirm These performed are Such research helps research Such to Such research assesses the This research is associated with whether arresters surge applied for equipment overvoltagetransient protection caused and switching lightning by surges provide sufficient of protection. margins In renewable power plants, coordination studies insulation also include temporary overvoltage analysis to determine sizing for grounding transformers effective ensure to grounding during plant or conditions. feeder islanding Insulation coordination studies. coordination Insulation Harmonic studies.Harmonic design studies.Filter determineto harmonic passive filter design parameters cases in where necessary it is to capacitorconvert shunt banks harmonic to filters. impactsloads, of harmonic-producing as such inverters and other power-electronic equipment, on of the harmonic levels voltage and current on the utility system. Voltage-stability analysis and modelVoltage-stability and analysis development. renewable including interconnection, generator power plants, and often is performed during the process application interconnection generator impact evaluate to of the generator on system voltage stability. Reliability studies. studies. transient S&CSwitching will analyze the transients associated with the switching of utility or industrial capacitor banks or shunt reactors, or the performance of transient mitigation devices during capacitor bank or transmission-line energization. Power-flow studies. S&C determines whether system voltages remain within specified and conditions, contingency various under limits conductors and transformers whether overloaded. are maximize efficiency, the reliability, and safety of a power system. u u u u u u u u u u u u u u PROJECT EXECUTION

ENGINEERING, PROCUREMENT, FIELD SERVICE AND CONSTRUCTION S&C’s field-service specialists take our expertise in electrical S&C’s Power Systems Solutions team takes projects from power systems into the real world with a comprehensive initial system study and design through to start-up and range of services to support your project needs. From commissioning in the field. After commissioning, most equipment start-up and personnel training through long- engineering, procurement, and construction (EPC) work term maintenance, we’re committed to sustaining the life of for companies is done, but S&C continues to support its your equipment and improving power reliability. solutions by offering comprehensive asset-management Installation Support services, including preventative maintenance and 24x7 remote monitoring. S&C’s technical experts have years of hands-on experience in the proper installation, testing, and commissioning S&C offers comprehensive EPC services for a variety of major of S&C’s products. S&C will bring this unique expertise project settings, including microgrids, substations, and to the customer’s project, ensuring equipment is ready renewable energy plants. for operation.

S&C offers the following services when executing complex S&C’s experts manage the installation of electric EPC projects: power equipment, such as circuit-switchers, automatic source-transfer switchgear, metal-enclosed switchgear, Engineering & Project Management overhead distribution equipment, automation systems, S&C’s engineering and project management success is power quality and energy storage equipment, and pad- founded on expert planning, commitment to safety, and mounted equipment, performing all essential testing and problem-solving. Engineers produce designs for diverse commissioning procedures. Installation services can vary in and complex projects, and our project managers oversee scope, from providing technical assistance to the customer’s the scope, schedule, cost, quality, and completion of crew through complete turnkey support from S&C. these projects. Mechanical Checkout, Start-up, and Commissioning Procurement For equipment such as automated distribution switching S&C has the resources and capabilities to procure the packages, our field-service specialists can provide the testing equipment, materials, skilled labor, and services needed to necessary to ensure the system is functioning properly. get the job done. S&C has established databases of suppliers Typical commissioning activities include: and subcontractors with whom we’ve worked around the uu System and component inspection prior to energization world and on a variety of projects and project types. uu Field adjustments Construction uu Calibration and programming S&C’s construction managers oversee on-the-ground uu Equipment start-up execution of projects around the world. They are dedicated to providing expert guidance and solutions for all phases uu System evaluation to ensure conformance to performance of the construction process and ensure proper equipment specification installation for every project.

TESTING

44 SERVICES 45 SG Automatic Restoration System Factory Factory System Restoration Automatic SG

®

A loss of source forA loss of source each source A fault for simulation each line segment events Contingency u u u Acceptance Testing Factory testing on acceptance devices running S&C’s Restoration ensures Automatic SG System IntelliTeam information all that required for IntelliTeam a successful SG implementation gathered is and understood before Eachcommissioning. test customized is the customer’s to needs. Scenarios can include: u u u Site Automation Testing Testing Automation Site SG testing automation the validates IntelliTeam Site implementation the in field. It provides significant insight SG system will work on the user’s the how IntelliTeam into system their using specific settings. The field engineer test automation worksassigned a site to closely with users to develop customized and meaningful test scenarios. Testing Operational S&C field service technologists on-site can coordinate operational testing procedures, including opening energized load observe to ways proper system operation. S&C can also site-specificcoordinate test procedures. Survey Validation Radio fieldS&C’s service personnel can perform an on-site radio- validation survey properly to locate radios for optimum system startup and performance. The survey determines individual links up the mesh make radio that network. The a for identifying locations ideal includes work of scope mesh radio network and temporarily installing radios while measurements made. are S&C the results will evaluate of the written a report provide recommendations. and of survey ElectricalNETA Testing can Electrical be performedNETA Testing on a site-specific withbasis the input from supervisor. the site IntelliTeam S&C Equipment Factory Acceptance Testing Testing Acceptance Factory S&C Equipment factory customer-witnessed provides S&C routinely testing onacceptance various pieces of S&C equipment before the equipment ensure shipment to performs as required. Factory testing will vary acceptance depending on the equipment being tested. Examples include routine tests, board circuit as such and subassembly functionality; mechanical inspection, wiring, resistance, Hi-Pot, insulation and other tests; or the testing can include customer- tests. specified S&C also offers testing the in onsite field our experienced by service professionals, testing, automation including site operational testing, and radio validation surveys. At the heartAt state-of-the-art, of S&C’s 43,000-square-foot the is Nicholas Conrad J. (ATC) Center Advanced Technology Laboratory, which two has 850-megawatt electrical short- test generatorscircuit can 80 that test up to kA and up to The facility kV. 230 also provides a high-speed video system, showing real-time data testing as occur. events S&C North the in is only company America able provide to ofin-house suite an entire facilities and services address to testingyour needs. Most common testing practices include analyses,material electrical testing, mechanical testing, and testing. forensic POST-INSTALLATION SUPPORT

S&C’s regional service centers are located across the nation, uu Cleaning offering timely support and expertise for necessary repairs uu Lubrication and restoration services. uu Adjustment REMOTE MONITORING & TECHNICAL SUPPORT uu Equipment troubleshooting Through the Global Support & Monitoring Center (GSMC), uu Repair of non-functional or damaged equipment S&C provides 24/7 condition-based monitoring of equipment using pre-installed monitoring hardware. When conditions EQUIPMENT RETROFIT AND UPGRADE fall outside of normal parameters and a notification is issued, S&C upgrade and retrofit programs can include all parts, our support staff immediately begin the troubleshooting project coordination, engineering services, and field support process to resolve issues. necessary to execute the work.

The list below highlights some of the major equipment types Upgrade and/or retrofit programs are available for: S&C can monitor: uu Circuit-switchers Transformers uu Metal-enclosed switchgear uu Dissolved gas analysis (DGA) uu Pad-mounted gear uu Bushing partial discharge uu Source-transfer controls uu Automation systems: Circuit breakers ¡ uu Gas pressure and temperature ¡ Switching equipment including overhead and underground distribution switchgear uu Bushing partial discharge ¡¡ Software uu Open/Close operations ¡¡ Automatic switch control PureWave® DSTATCOM Distributed Static Compensator ¡¡ Communication and PureWave SMS Storage Management System uu Real and reactive power EXTENDED WARRANTY uu System voltages and currents Besides a standard two-year warranty for new equipment, S&C offers an extended-warranty program to help extend the uu System and inverter availability life of new and existing equipment. S&C provides dedicated IntelliTeam® CNMS Communication Network service visits, equipment troubleshooting, and parts repair Management System and replacement for the duration of the warranty. Contact uu S&C SpeedNet™ Radios your local S&C representative for more information. PureWave® UPS Systems TRAINING uu System availability Our comprehensive training programs are designed to thoroughly familiarize customer personnel with the uu Run cycles operations and maintenance of their equipment. IntelliTeam SG Automatic Restoration System Products ® S&C can provide training on a variety of topics, including: uu Remote Supervisory Vista® Underground Distribution Switchgear On-site training services uu IntelliRupter® PulseCloser® Fault Interrupters uu Equipment general overview uu Other S&C products with IntelliTeam SG connectivity uu Equipment operation, maintenance, and troubleshooting uu Refresher courses as required ROUTINE MAINTENANCE S&C provides preventative maintenance on numerous types S&C Global Headquarters training of electrical equipment to maximize operating life, including uu IntelliTeam SG system hands-on operation inspection, testing, and repair. Services can be provided as uu IntelliTeam fault-simulation training (performed in part of an ongoing asset-management program or on a task- S&C’s IntelliLab) by-task basis. Routine maintenance includes: uu SCADA training (performed on-site or in S&C’s IntelliLab) uu Safety checkout and visual inspection uu Refresher courses as required uu Operational testing

46 SERVICES 47 MICROGRIDS SMART GRIDS Microgrids inherently are complex. Integrating a variety of distributed generation together sources one into electrical systemchallenging a is task, which further is complicated achieving by microgrid functionality as such load shedding, islanding, and self-healing. analysis From maintenance, and monitoring to engineering S&Cand works with customers design and to implement complex microgrid systems for various applications. In addition providing services,to comprehensive EPC S&C also manufactures components the core of a microgrid: the While competitors andcontroller the switchgear. package these components a variety in of S&C ways, the is only the in industryintegrator components provide to key all necessary for a total microgrid project. S&C’s smartS&C’s grid solutions best-in-classfeature software, switching, and productscommunications to system- advanced provide automation capabilities. S&CFrom metal-enclosed switchgear service- to restoration software, customers get the most out of S&C smart grid products whencombined with our engineering, installation, asset-management and monitoring, commissioning, services. For more information on S&C Services, see publication 180-30 at sandc.com.

Standard equipmentStandard packages help to reduce equipment and installation lead 60% up to times by Full EPC approaches EPC reduce system to Full footprints, construction costs, and project schedules Medium-voltage protection equipment and control specifically for renewable energy installations relationships strong and experience Extensive working with local utilities and ISOs u u u u RENEWABLE ENERGY PROJECTS ENERGY RENEWABLE SUBSTATIONS u u u u APPLICATIONS For bothFor wind and solar applications, S&C works with andyou the local utility find to the most economical and feasible solutions deliver to the best long-term value. S&C is an industry leader renewable in energy solutions, providing: S&C provides services turnkey for building substations, including design physical engineering, protection and design engineering,control detailed installation drawings, contractor selection and on-site oversight, testing and andcommissioning, asset-management services. PMH PME PAD-MOUNTED GEAR

S&C Pad-Mounted Gear is available in 68 manual and S&C TransFuser™ Mountings allow quick, convenient access power-operated models and in a wide variety of circuit to fuses in the open, de-energized position. Fuses are configurations, ratings, and options, offering unsurpassed presented vertically, making for easy handling with a shotgun flexibility to your underground distribution system. All stick—away from the weather. The TransFuser Mounting models reflect S&C’s uncompromising design and classic rotates to block access to the interior and to place bushing quality for ease of installation, operator convenience, and wells inside the enclosed compartment, where they’re kept years of maintenance-free service. You can choose PMH gear clean during re-fusing operations. with directly accessible components or PME gear with elbow- connected components. POWER-OPERATED MODELS Source-Transfer PMH and PME Models provide fully Both PMH and PME gear feature S&C Mini-Rupter Switches. ® automatic three-pole switching of the sources serving critical These rugged switches are specifically designed to handle all loads, which require a high degree of service continuity. three-phase live-switching duties, including load dropping A field-programmable Micro-AT Source-Transfer Control and fault closing. Tap protection is provided by S&C Power ® continuously monitors the status of the two sources and, if Fuses or Fault Fiter Electronic Power Fuses. Permanently ® voltage on the source serving the loads is lost, automatically accurate S&C Power Fuses—available in a wide choice of initiates switching to transfer to the alternate source, thus ampere ratings and time-current characteristics (TCCs)— restoring power to the loads. provide superb protection against the full spectrum of fault currents and precise coordination with all upstream and Source-transfer models are available in the same ratings and downstream devices. S&C Fault Fiter Electronic Power Fuses, design features as Manual PMH and PME Models, but they with their exceptional TCC versatility, provide features and feature Mini-Rupter Switches powered by stored-energy performance previously unavailable in any protective device. operators.

MANUALLY OPERATED MODELS Source-transfer models are totally self-contained switching Manual PMH Models with directly accessible components and protection packages. Each is completely factory- are available in ratings of 14.4 kV and 25 kV. They feature assembled and ready for installation. No external wiring or 600-ampere three-pole switching of source circuits using control power is required. external handle-operated Mini-Rupter Switches and 200- Construction details of Source-Transfer PMH and PME Models ampere single-pole switching of tap circuits using S&C’s are shown on pages 26 and 27. Uni-Rupter® Interrupter. Tap protection is provided by S&C Type SML-20 or SML-4Z Power Fuses, Fault Fiter Electronic Remote Supervisory PMH and PME Models feature power- Power Fuses, or a variety of current-limiting fuses. operated Mini-Rupter Switches that respond to opening and closing signals from a remote location. These models can With the PMH gear’s readily accessible components, circuits be specified with a communication and control equipment are quickly and easily switched and tested for voltage. group for a completely integrated and self-powered Grounding provisions are simple, direct, and visible. automated switching and protection package. The operator can easily visualize the circuitry and see all components being operated. Each circuit is segregated by The communication and control equipment group includes barriers, as is the interconnecting bus. a battery and battery charger; a voltage sensor for single- phase voltage sensing and a control-power source; three- Manual PME Models with elbow-connected components phase current sensing on power-operated switches; a are also available in ratings of 14.4 kV and 25 kV. They bring user-specified remote terminal unit or 6800 Series Automatic 600-ampere three-pole switching using Mini-Rupter Switches Switch Control, which supports the IntelliTeam® SG and tap protection through 200 amperes using S&C Type Automatic Restoration System; and a communication device. SME-20 or SME-4Z Power Fuses, Fault Fiter Electronic Power No external wiring or control power is required. Just connect Fuses, or a variety of current-limiting fuses. the power cables, configure the remote terminal unit (RTU), and the gear is ready for service. In PME gear, switch and fuse components are enclosed and protected within an inner air-insulated, grounded Construction details of Remote Supervisory PMH and PME steel compartment that keeps out foliage, wildlife, and Models are shown on pages 26 and 27. contaminants, and it reduces exposure to energized live parts. Viewing windows in switch-termination compartments The Rural Utilities Service has accepted suitably equipped PMH Models and all PME Models of S&C Pad-Mounted Gear. allow visual verification of the Mini-Rupter Switch blade position. There’s no need to move 600-ampere elbows to establish working clearances. 48 MEDIUM VOLTAGE S O 49 S O S O 4 1 1 4 1 4 4 1 PME-9 V S V S PMH-9 V S V S V S V S 3 3 2 2 3 2 S O S T C S O S O S T C PME-12 L V C S O S O PMH-11 with 1, 2, or 3 PMH-11 Switch Operators S O S O 4 1 S O 1 4 4 1 3 2 S O S O 1 4 4 1 V S V S PMH-6 V S V S V S PME-6 V S 3 2 S O S T C S O SOURCE-TRANSFER PME MODELS PME SOURCE-TRANSFER SOURCE-TRANSFER PMH MODELS PMH SOURCE-TRANSFER Switch Operators 3 2 3 PME-11 with 1, 2, or 3 PME-11 2 L V C S O S O S T C PME-11 3 2 PMH-10 with 4 Switch Operators S O S O 4 1 S O S O 3 2 4 1 4 1 S O 4 1 1 4 PMH-19 PMH-8 2 3 Switch Operators 3 2 4 1 PME-10 2 3 L V C S O PME-10 with 1, 2, 3, or 4 3 2 PMH-10 with 1 or 2 Switch Operators L V C S O 3 2 4 1 S O 4 1 PMH-13 4 1 S O 1 4 2 3 PMH-7 4 1 2 3 PME-9 PME-9 with 1 or 2 Switch Operators MANUAL PME MODELS PME MANUAL 3 2 L V C S O 3 2 4 1 PMH-12 3 2 PMH-9 with 1 or 2 Switch Operators L V C S O REMOTE SUPERVISORY PME MODELS SUPERVISORY PME REMOTE REMOTE SUPERVISORY PMH MODELS SUPERVISORY PMH REMOTE S O 2 3 4 1 4 1 4 1 S O PMH-6 1 4 2 3 PME-6 MANUAL PMH MODELS PMH MANUAL PMH-11 PME-6 with 1 or 2 Switch Operators 3 2 L V C S O 3 2 2 3 3 2 PMH-6 with 1 or 2 Switch Operators L V C S O 4 1 PMH-5 2 1 L V C L V C PME-5 2 1 PME-5 PMH-10 2 1 S O PMH-5 1 2 PMH-4 2 3 2 1 S O 1 4 PME-4 2 1 L V C PMH-9 PMH-3 2 1 PMH-3 1 2 S O 2 3 Circuit Configurations PMH PME PAD-MOUNTED GEAR

PMH Models—Fuse★ and Switch Compartments

S&C’s Uni-Rupter ® Interrupter—provides the Insulated roof—“No-drip” Dual-purpose front barriers of GPO3-grade, ultimate in single-pole live switching ... just a firm compound on the underside fiberglass-reinforced polyester—guard against opening pull on the fuse interrupts the circuit with of the roof guards against inadvertent contact with live parts when in the a quick-break action; the Uni-Rupter Interrupter formation of condensation that normal vertical position; inserted into the open self-resets for the next opening operation. could drip onto energized parts gap of a switch or fuse, the barrier provides Separate current-carrying and fault-closing isolation from bus and upper contacts contacts are provided Grappler™ Handling Tool—takes the work out of fuse handling; it provides sure grip, Corrosion-resistant non-ferrous perfect balance, and ready control that door hinges and hinge pins operators appreciate

Segregated circuits—Full-length steel barriers separate Ground studs—for fuse terminals, side-by-side compartments; GPO3-grade, fiberglass- switch terminals, and the ground pad reinforced polyester barriers separate front compartments in each compartment from rear compartments and isolate the interconnecting bus

Optional base spacer—increases elevation of the gear up to 24 inches to provide additional cable-training space or additional distance above the ground

Cypoxy™ Insulators, S&C's cycloaliphatic epoxy resin system, insulate all live parts from ground. S&C’s Ultradur™ II Outdoor Finish provides superb corrosion resistance.

ALSO AVAILABLE: Optional cable guides—assist in cable training and provide uu Optional stainless steel enclosure protection against damage from excessive cable or uu Optional key-interlock schemes foundation movement

uu Optional inner-barrier panel—meets Rural Utilities Service “dead-front” requirements

uu Optional Canadian Standards Association Certification

uu Optional UL Listing

★ Fuse compartments illustrate a nonstandard combination of Fault Fiter® Electronic Power Fuses (on left) and SML-20 Power Fuses (on right) for comparison only. 50 MEDIUM VOLTAGE 51 — Electronic Electronic

®

® — Optional fuse-Optional feature storage accommodates up to three spare SML fuse assemblies, one spare Fiter Fault Power Fuse holder, or two spare Fiter Fault interrupting modules Penta-Latch Mechanism provides vandal- resistant, automatic, three-point door latching for S&C Pad-Mounted Gear and is fully coordinated with a provision for padlocking —GPO3- —the field-—the p Switch

Sym.

®

12 500 12 500 12 500 14 000 14 14 000 14 12 500 Short-Circuit, Amperes, RMS, —wire-brushed and Interphase and end barriers end and Interphase grade, fiberglass-reinforcedpolyester for superior arc and track resistance; switch barriers are easily removed to facilitate terminating cables Mini-Rupter

200 200 tested and proven 600-A three-pole group-operated interrupter switch S&C Load Dropping Load with Uni-Rupter with Amperes n n Fuse For further information on Manual PMH Models, see publications 662-30 and 662A-31 at sandc.com. —available in —available in 200 200 200 200 Max 200E 200 200E 200 ①

Aluminum bus connections bus Aluminum compound— abrasive oxide-inhibiting an by protected are bolted at a uniform torque of ft-lbs; 50 two spring washers per bolt maintain contact pressure

® ®

Type SML-20 200E SML-20 200E SML-4Z SML-4Z Electronic Electronic 60-Hz Ratings Electronic Power Fuses are rated 29 kV max. Power Fuse Power Fuse Fault Fiter Fault Fiter

® Optional distribution-class arresters surge 9-kV through 18-kV ratings for applicationat the source-side terminals switch

PMH PAD-MOUNTED GEAR PAD-MOUNTED PMH

®

Load Dropping Mini-Rupter —accommodate Switch, Amperes Switch, 600 600 600 600 Cont. —for visible verification verification visible —for 95 BIL 125

Fuse Units are available in ratings through 200K amperes as well as 200E amperes. —can be added at u

® 17.0 kV Max 27 5-kV models equipped with Fault Fiter A C 2 25 SMU-20 onsult the nearest S&C Sales Office for 50-hertz ratings.

14.4 single-conductor, by connected fuses with only, systems grounded-neutral solidly to pplicable

Nom. all switch and bus terminals to accommodate two connectors per terminal Optional terminal Optional terminal adapters Optional mounting provisions for for provisions mounting Optional viewing a with indicator fault a door the in window one three-phase indicator with single-phase sensors (fault indicator shown for illustrative purposes only) Viewing window Viewing of the switch position is easily removed forvoltage testing or phasing p ① n concentric-neutral-type cable to a transformer or transformers. Rating is 9,400 amperes, RMS, symmetrical for all other applications. u PMH PME PAD-MOUNTED GEAR

PME Models—Fuse and Switch Compartments

Viewing windows—allow easy Generous spacing of bushing wells and parking 200-A Cypoxy™ Insulator bushing checking of blown-fuse indicators stands—accommodates a full spectrum of elbows, wells—have interfaces in accordance portable feed-thrus, and accessories with ANSI/IEEE Standard 386

Storage racks—hold spare Fault Fiter® Up-front access to fuses—takes the hassle out of Fuse Interrupting Modules, Ground rings—readily accessible in fuse changeout; with an almost effortless pull, the SMU-20® Fuse Units, or SM-4® Refill an up-front location; enclosure doors TransFuser™ Mounting unlatches and pivots to its Units, enabling operators to restore may be closed with grounding clamps open position, making the de-energized and isolated service without delay in place fuse accessible for easy replacement

52 MEDIUM VOLTAGE 53

—have —accommodate Parking stands Parking variety accessories a of —accommodate ublications 665-30 and 665-31 at sandc.com. p

Deep, spacious termination termination spacious Deep, compartments a wide range of elbows and closed doors the with accessories S&C’s Ultradur™ II Outdoor Finish Outdoor II Ultradur™ S&C’s provides an extremely tough, multistage, baked-on finish with exceptional performance the proven by most rigorous battery of tests in the industry. Featured on both and Models. PMH PME 600-A Cypoxy™ Insulator bushings Insulator 600-A Cypoxy™ interfaces in accordance with ANSI/IEEE Standard 386 p — Sym. 12 500 12 500 12 500 14 000 14 14 000 14 12 500 Short-Circuit, Amperes, RMS, —steel Switch position

®

n n 200 200 200E 200E Amperes, Max Segregated Segregated compartment side-by-side isolate barriers cable compartments and check for a visible break Wide-view, unbreakable, unbreakable, Wide-view, windows mar-resistant let the operator verify Mini-Rupter Fuse

® ® For more information on Manual PME Models, see S&C ① Type SME-20 200E SME-20 200E SME-4Z SME-4Z Electronic Electronic Power Fuse Power Fuse Fault Fiter Fault Fiter Electronic Power Fuses are rated 29 kV max.

®

—allows —allows 60-Hz Ratings Switch,

Load ®

Dropping PME PAD-MOUNTED GEAR PAD-MOUNTED PME Amperes Hinged roof Hinged cable to be pulled up through the roof making opening, installation quicker and easier 600 600 600 600 Cont. Mini-Rupter 95 BIL 125

—extends u Fuse Units are available in ratings through 200K amperes as well as 200E amperes. kV

®

17.0 Max 27 5-kV models equipped with Fault Fiter C 2 A 25 SMU-20 onsult the nearest S&C Sales Office for 50-hertz ratings.

14.4 full width of each switch compartment; doors may be closed with grounding place in clamps Ground rod Ground pplicable to solidly grounded-neutral systems only, with fuses connected by single-

Nom. ① p conductor, concentric-neutral-type cable to a transformer or transformers. Rating is 9,400 amperes, RMS, symmetrical for all other applications. n u PMH PME PAD-MOUNTED GEAR

FUSES 20% tolerance of many fuses. The design and construction S&C Pad-Mounted Gear offers a wide variety of S&C features of the fusible elements ensure SML and SME Power Power Fuses for protection of your distribution system. Fuses conform to their TCCs not only initially but on a sustained basis. They’re nondamageable; TCCs are unaffected With SML and SME Power Fuses, you can select from a by age, corrosion, vibration, or surges that heat the element range of ampere ratings and time-current characteristics nearly to the severing point. SML and SME Power Fuses (TCCs) to achieve close fusing for maximum protection provide superior protection against the full spectrum of fault and optimum coordination. TCCs are precise, with only currents; they detect and interrupt all faults—large, medium, 10% total tolerance in melting current compared with the and small (even down to the minimum melting current).

Brilliant blaze-orange blown-fuse target— appears at top of interrupting module after Fault Fiter fuse operates; it’s lucent by daylight or flashlight

Lustrous-red blown-fuse target—projects from the top of the upper-end fitting when the fuse unit has operated, and Fluorescent fire-red it automatically resets when blown-fuse target— Replaceable a blown fuse unit is replaced; moves to the “BLOWN” interrupting fuse condition is easily indicator window in module checked with the fuse in the the translucent holder Closed position when the fuse operates, permitting a positive visual check of fuse condition without removing the fuse from the mounting; target fluoresces at night when Electronic illuminated with a flashlight control module

SML-20 (shown) and SME-20 Power SML-4Z and SME-4Z (shown) Power Fault Fiter® Electronic Power Fuse (shown Fuses—rated 200E or 200K amperes max Fuses—use S&C’s SM-4® Refill Unit in fuse holder for mountings with Uni-Rupter® continuous; 60-hertz interrupting ratings and are rated 200E amperes max Interrupter)—rated 200 amperes max are 14,000 amperes RMS, symmetrical, at continuous; 60-hertz interrupting continuous at both 14.4 kV and 25 kV in PMH 14.4 kV, 12,500 amperes RMS, symmetrical, rating is 12,500 amperes RMS, Models (In PME Models, the max continuous at 25 kV (These power fuses feature S&C’s symmetrical at both 14.4 kV and 25 kV rating is 200 amperes at both 14.4 kV and 25 kV. SMU-20® Fuse Unit, designed for universal 60-hertz interrupting ratings are 14,000 amperes use on both your underground and RMS, symmetrical, at 14.4 kV, 12,500 amperes overhead distribution systems.) RMS, symmetrical, at 25 kV.)

S&C Power Fuses with the Uni-Rupter ® Interrupter feature single-pole live switching of single-phase or three-phase load circuits. TransFuser™ Mountings are furnished with 200-ampere bushing wells for loadbreak or non-loadbreak elbow connections to cable.

54 MEDIUM VOLTAGE 55 — ◆ 3000 — — 210 ① 3000, 6000 3000, Pickup, RMS 1—200E Instantaneous n 15E—200E High-Current or 25 25 25 25 25 25 25 14.4 14.4 14.4 14.4 14.4 14.4 14.4 Rated, kV For Use in S&C Pad-Mounted Gear —1100 —1500

400, 500 400, REFILL UNIT RATINGS REFILL UNIT Minimum 400 400

® Pickup, RMS Available Ratings, AmperesAvailable — 1—200E 3K—200K thorized Distributor. Available Ratings, AmperesAvailable 15E—200E 50E—200E Au

SMU-20 Fuse Units SM-4 Refill Units 40C

65 40

112 100C 40C 40C 100 100C 200C 100C 100C 40C

40

50 50 140 100 100

100 100

600 600 600 — — — — ELECTRONIC POWER FUSE RATINGS —

— — — — — — — —

— — — — —

—

— — Current

3 3 3

® 12 6 6 25 12 12 12 30 30 4C 4C 6C 3.5C 45C 45C 60C 1.5C 1.5C Max Continuous FUSE UNIT AND SM-4 FUSE UNIT AND

® Maximum Amperes Current, ales Office or your S&C FAULT FITER FAULT S Speed

SMU-20 S&C “K” ELECTRONIC POWER FUSE MOUNTINGS

S&C Slow

Rating S&C Standard S&C Very Slow For more information on SML and SME Power Fuses, visit sandc.com. Inverse Subloop S&C Coordinating Curve Type Compound Underground For selection and application information or for other curve types, refer to the Type-Delayed A

vailable in 14.4-kV PMH and PME Models only. ① ◆ nearest S&C .5 .5 8.3 8.3 8.3 8.3 8.3 8.3 8.3 23 23 22 23 15 15 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5

Maximum Voltage, kV

® Current-Limiting Fuse Current-Limiting ™ ELX

® Edison NX

- Type

Kearney B Kearney RTE Kearney Q Kearney X Limiter X Cutler Hammer CX Cutler Hammer CXN Hammer Cutler McGraw Combined Technologies Combined CURRENT-LIMITING FUSES ACCOMMODATED IN FAULT FITER IN FAULT ACCOMMODATED FUSES CURRENT-LIMITING Electronic Fuses Power combine an

® Eaton Cooper Manufacturer A vailable in PME models only. innovative high-techinnovative electronic module control with a unique interrupting module solve to difficult protection and coordination applications. The module control incorporates a currenttransformer and circuitry provide to the as well energy as initiate to current sensing and the TCC unprecedentedfuse’s variety Fiter interruption. The Fault superior provide TCCs electronically derived unique of protection and precise coordination for a wide range of determinedapplications. isn’t a fusible Because by the TCC fuse Fiter not the is susceptible to element, the Fault protection vagaries of traditional fuses. current-limiting Fault Fiter Fault n VISTA® UNDERGROUND DISTRIBUTION SWITCHGEAR

S&C Vista Underground Distribution Switchgear, available 2. Test the cables using an ungainly clamp-stick-mounted in ratings through 38 kV, features elbow-connected voltage tester. components enclosed in a compact, submersible, SF6- 3. Move the elbows to parking stands, along with grounding insulated, welded-steel tank, completely protected from bushings or elbows, which also is an unwieldy task. the environment. But with Vista switchgear, just one person using a simple Vista switchgear is offered in five styles—the innovative operating handle merely needs to: UnderCover™ Style as well as pad-mounted, vault-mounted, 1. Rotate the switch operating shaft to the Open position manhole, and wind turbine styles. Manual, source-transfer, and confirm the open gap through the large viewing and remote supervisory versions are available. All models use window. Because the hinge end of the switch is the same basic components, cutting your operator-training and inventory costs. connected to the bushings, the bushings—and hence the cables—are isolated from other medium-voltage Construction details of source-transfer and remote components in the gear. supervisory models are shown on pages 26 and 27. 2. Test for voltage simply by using the pushbutton voltage Wind Turbine Style is shown on page 59. indicator that’s capacitively coupled to the bushings. HANDLES MORE LOADS PER UNIT 3. Rotate the switch operating shaft to the integral Vista switchgear is furnished with up to six “ways” per unit, Grounded position and confirm grounding through each consisting of one of the following: the viewing window. uu Bus terminals Vista switchgear is certified arc-resistant per IEC 298, uu A load-interrupter switch for switching up to Appendix AA, for arcs occurring internal to the gear. 900-ampere main feeders COMPLETE SYSTEM COORDINATION uu A microprocessor-controlled, resettable arc-spinner or vacuum fault interrupter for switching and protecting Vista Switchgear’s unique microprocessor-based main feeders up to 900 amperes, and 600-ampere or overcurrent control features special, customizable 200-ampere taps, laterals, and subloops “coordinating” speed time-current characteristic curves (TCCs) that provide complete coordination with upstream By handling more loads per unit, you need fewer units, relays and downstream fuses. Conventional “E,” “K,” and “T” saving you money. speed curves are available, too (see page 58).

PLACE GEAR JUST WHERE IT’S NEEDED Separate phase- and ground-overcurrent curves coordinate Vista switchgear is submersible and considerably smaller with source-side breakers having ground-trip settings. Both than traditional air-insulated gear, so it can be installed main and tap curves are provided for complete coordination exactly where needed—even subsurface—without between fault interrupters applied on main feeders and compromising aesthetics. Your customers are happier, and those applied on subloop taps. you save money through reduced trenching and shorter The overcurrent control is programmed with a PC in the cable runs. shop or in the field . . . no knobs or dials to compromise SAFER TO OPERATE security. Simply connect your PC to the USB port covered by Ordinary elbow gear does isolate operating personnel from a protective cap. All programming software is loaded on the medium-voltage components—that is, until you need to overcurrent control and is easily accessed via a browser. The operate it! Consider a routine operation such as isolating a control also features a handy event recorder that captures downstream cable for repair. With conventional switchgear, information on the last 64 trip events, along with control two or more specially trained operators need to: status and diagnostic information. External trip provisions are optionally available, permitting the fault interrupters to be 1. Remove the elbows from their bushings using shotgun tripped remotely by external controls or relays. clamp sticks, which is a tedious, awkward task.

56 MEDIUM VOLTAGE 57 — — 12 500 12 500 12 500 25 000 25 25 000 25 25 000 25 (12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25 —equipped Second, Sym. Second, Mom. and One- ① Load-Interrupter Switch Load-Interrupter Switch terminals Switch with 600-ampere or bushings 200-ampere bushing wells 600 600 600 600 600 600 (630) (630) (630) (630) (630) (630) located on one side of the reducinggear, operating space required for elbows cables and Bushings and bushing wells bushing and Bushings Cont. and Cont. (not shown)—lets (not you operate any See detail on page you can 59; check the integrity of the voltage flashlight a shining indicator by on the photocell-powered test circuit while placing a gloved finger over the test button, and no flashlight is needed in daylight Optional voltage indicator indicator Optional voltage liquid-crystalwith display Load Dropping — 12 500 12 500 12 500 25 000 25 25 000 25 25 000 25 (12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25 Fault- Interr., Sym. Ten-Time Duty-Cycle Amperes, RMS ① Fault InterrupterFault Optional portable motor operator portableOptional motor location remote a from interrupter fault or switch load-interrupter Large viewing windows viewing Large let you see open gap and on positions grounded load-interrupter switches and fault interrupters. indicatorsTrip are easily checked, too 200 200 200 600 600 600 (630) (630) (630) (200) (200) (200) Cont. and Cont. Load Dropping Sym. 12 500 12 500 12 500 UNDERGROUND DISTRIBUTION SWITCHGEAR 25 000 25 25 000 25 25 000 25

(12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25

® Short-Circuit, 50/60-Hz ANSI Ratings—IEC Ratings in Parentheses VISTA ① —equipped with 600 600 600 (630) (630) (630) Current Main Bus Cont. ampere or bushings ampere bushing wells - -

200 Fault interrupter interrupter Fault terminals 600 95 BIL 150 125 (95) (125) (150) —located near grade level so UnderCover Style Style UnderCover so level grade near —located 29 38 kV (29) (38) 15.5 Max (15.5) For more information on Vista Underground Distribution Switchgear, see publications 680-30, 681-31, and 681-700 through 681-708 at sandc.com. at 681-708 through 681-700 and 681-31, 680-30, publications see Switchgear, Distribution Underground Vista on information more For — 27 38 (12) (24) (36) 15.5 Class System Main bus rating amperes up to 1200 and fault interrupter and load-interrupter switch readily programmed with your PC Overcurrent Overcurrent control gear is easily operated from standing a position—away from cables medium-voltage 15-kV UnderCover Style Model15-kV 422 panel Operating rating up to 900 amperes are possible. Consult the nearest S&C Sales Office. ① VISTA® UNDERGROUND DISTRIBUTION SWITCHGEAR

SELECT THE TCC YOU NEED combinations and source-side relays with low time-dial The Vista switchgear overcurrent control lets you choose settings.) these time-current characteristic curves: uu Coordinating speed main—with minimum pickup uu “E” speed—from 25E through 400E amperes settings from 25 through 800 amperes (Ideal for fault uu “K” speed—from 25K through 200K amperes interrupters on main feeders. Curves have longer minimum response times and different shapes to coordinate with uu “T” speed—from 8T through 200T amperes tap-interrupter curves.) uu ANSI/U. S. and IEC—conforms with IEEE C37.112-1996, “IEEE Standard Inverse-Time Characteristic Equations for Coordinating-speed TCCs can be customized into hundreds Overcurrent Relays” of different curves using a variety of definite-time delay (0 through 1,000 seconds) settings. uu Coordinating speed tap—with minimum pickup settings from 15 through 400 amperes (Perfect for fault interrupters Negative sequence and sensitive earth fault protection feeding subloop taps, and it optimizes coordination settings are also included. with load-side weak link/backup current-limiting fuse

Circuit Configurations①

MANUAL STYLE MANUAL AND REMOTE SUPERVISORY MODELS MODELS

201 210 211 320 321 330

110

413 422 431 440

101 514 523 624 633

Circuit Configurations①

SOURCE-TRANSFER STYLE MODELS

VT VT

321 330 440 431 422

523 550 532 550 Common-Bus Configurations Split-Bus Configurations

① Model number indicates the total number of ways as well as the number of load-interrupter switch ways and fault-interrupter ways. For example, Model 431 has “4” ways—“3” load-interrupter switch ways and “1” fault-interrupter way. Other configurations are available; consult the nearest S&C Sales Office.

58 MEDIUM VOLTAGE 59 —housed in watertight watertight —housed in —protects switching and protection Microprocessor-based overcurrent overcurrent Microprocessor-based control (not (CTs) transformers Current enclosure. visible) provide power and signal inputs 38-kV Wind Turbine-Style Model 101 —prevents Compact welded-steelCompact tank components from the environment; stainless steel construction construction steel stainless environment; the from components Style UnderCover™ in standard Operation selectorOperation from operation inadvertent Closed position directly to Grounded position, and vice versa. — 38-kV Pad-Mounted Style Model 321 Operating for mechanisms switches and fault interrupters padlockable in any position (located 15-kV Manhole Style Model 110 Gas-fill port —includes test feature —includes feature test Underground Distribution Underground Switchgear ®

Pressure gauge Pressure window)—temperature- under altitude-compensated and Optional voltage indicator with liquid-crystal with indicator voltage Optional display Operating panel of Vista Viewing switchgear. windows, for confirming the open gap and grounded position on load-interrupter switches and fault interrupters, are located under the hinged of covers the voltage indicators. 15-kV Vault-Mounted Vault-Mounted 15-kV Style Model 422 Vista Models Vista VISTA® SD UNDERGROUND DISTRIBUTION SWITCHGEAR

S&C’s Vista SD Underground Distribution Switchgear is solid- available. The operators can be easily decoupled without dielectric switchgear that reduces the time and complexity of removing any hardware to permit testing of the motor and routine switching procedures. It was designed with the user controls. in mind. Key features include: Vista SD switchgear is completely submersible and suitable uu Easy-to-achieve visible break. No moving cables or for application in subsurface vaults subject to flooding. It is using other accessories are needed to achieve a visible also available for above-grade application in pad-mounted break. The isolating disconnect, readily visible through a style enclosures. large 3×5-inch window, provides a true visible break in the circuit. Vista SD switchgear is considerably smaller than traditional uu Simple operation. The manual handle is easy to operate air-insulated gear, so it can be installed exactly where it’s and can be operated by hand, rope, or universal pole with needed without compromising aesthetics. Consumers are the appropriate fitting. Portable motor operators and happier, and you save money through reduced trenching and accessory pendants are also available. shorter cable runs. uu High reliability in challenging applications. SIMPLE TO OPERATE It’s completely submersible and dust-tight. With Vista SD Underground Distribution Switchgear, routine operation, such as isolating a downstream cable for repair, S&C Vista SD switchgear can be tailored to meet specific is easy. Just one person, using either the manual handle or installation requirements, with configurations available in a suitable user-furnished universal pole equipped with a any combination of Visi-Gap Load Interrupter Switches and ® standard fitting, merely needs to: Visi-Gap ® Fault Interrupters, up to six ways in total. Visi-Gap switches are three-pole vacuum load-interrupter switches 1. Place the load-interrupter switch operating mechanism that provide live switching of 600-ampere main feeders. Visi- in the Open position and confirm the open gap of the Gap Fault Interrupters are microprocessor-controlled vacuum isolating disconnect through the large viewing window. fault interrupters that provide three-pole live switching and 2. Test for voltage using the optional potential indication protection of 600-ampere main feeders and 200- or 600- feature. ampere taps, laterals, and sub-loops. Vista SD switchgear is furnished with a ground-connection The elbow-connected switches and fault interrupters are pad on each load-interrupter switch and fault interrupter for encapsulated in an environmentally friendly solid-dielectric attaching an elbow ground cable. Continuous ground bus for insulating material. the entire switchgear assembly is optionally available.

Each load-interrupter switch and fault interrupter includes COMPLETE SYSTEM COORDINATION a manually operated, two-position isolating disconnect. Vista SD Underground Distribution Switchgear is furnished An easy-to-follow mimic bus and indicators on the front of with the same microprocessor-based overcurrent control the switchgear convey the position of each switch and fault used in S&C Vista ® Underground Distribution Switchgear. interrupter and its isolating disconnect—and whether a fault It offers special, customizable “coordinating” speed interrupter has tripped in response to a fault. time current characteristic curves that provide complete Vista SD switchgear can be furnished with up to six “ways” coordination with upstream relays and downstream fuses. (load-interrupter switches and/or fault interrupters) in Conventional “E,” “K,” and “T” speed curves are available, too ratings through 29 kV and 16 kA symmetrical interrupting. (see page 62). By handling more loads per unit, fewer units of Vista SD The overcurrent control is programmed with a PC in the shop switchgear are required. or in the field. There are no knobs or dials to compromise Each way includes an easy-to-operate manual operating security. Simply connect your PC to the USB port covered by mechanism. Operating mechanisms for fault-interrupter a protective cap. All programming software is loaded on the ways are “trip-free,” meaning the opening spring is charged overcurrent control and is easily accessed via a browser. The when the closing spring is charged and will open the fault control features an event recorder that captures information interrupter—based on the time-current characteristic (TCC) on the last 64 trip operations. curve in the overcurrent control—if the fault interrupter is External trip provisions are optionally available, permitting closed into a fault. Factory-installed and factory-wired motor the fault interrupters to be tripped remotely by external operators to facilitate remote power operation are optionally controls or relays.

60 MEDIUM VOLTAGE 61 l 12 500 16 000 16 Interrupting Short-Circuit u u ① Fault Interrupter Fault 600 (630) 600 (630) Splitting Continuous, Load Load Continuous, Dropping, and Load Load and Dropping, ② 12 500 16 000 16 Sym. Three-Time Duty- Cycle Fault Closing,Cycle 12 500 Three- 16 000 16 Amperes, RMS Bushings without studs are optional. interrupters Fault can be Second, Sym. Second, Momentary and Load-Interrupter Switch Load-Interrupter ① Pad-Mounted Style Pad-Mounted Pad-mounted enclosure and C57.12.29. meets IEEE C57.12.28 Available in mild steel or stainless steel. 600 (630) 600 (630) Dropping, and and Dropping, Load Splitting Continuous, Load Load Continuous, SD UNDERGROUND DISTRIBUTION SWITCHGEAR

® 50/60-Hz ANSI Ratings—IEC Ratings in Parentheses VISTA 12 500 16 000 16 RMS, Sym. RMS, Short-Circuit,

Current Main Bus Main 600 (630) 600 (630) Continuous Continuous BIL 95 (75) 125 (125) kV Max 17.5 (12) SD Underground Distribution Underground Switchgear SD ®

A P 2 Class pplicable to fault closing into closed position. arallel or loop switching. Load-interrupter switches and fault interrupters can switch the magnetizing current of transformers associated with this rating. Unloaded 1 15 (12) 27 (24) 29 (24) 00amperes if fault interrupters are furnished with optional 200-ampere bushing wells. System 2 500 amperes if fault interrupters are furnished with optional 200-ampere bushing wells. Vista Vault-Mounted StyleVault-Mounted optionally furnished with 200-ampere bushing wells. Interfaces conform to ANSI/IEEE 386 and accept all standard insulated connectors andinserts. All terminals are equipped 600-ampere with are terminals threadedAll with studs. bushings cable switching capability: kV; 20 amperes amperes 10 Load-interrupter at 29 kV. at 17.5 switches and fault interrupters can also switch single capacitor banks through 1800 kvar. l ② u ① VISTA® SD UNDERGROUND DISTRIBUTION SWITCHGEAR

MULTIPLE TCC OPTIONS interrupters feeding subloop taps. Optimizes coordination The Vista SD Underground Distribution Switchgear with load-side weak link/backup current-limiting fuse overcurrent control lets you choose these time-current combinations and source-side relays with low time- characteristic curves: dial settings.) uu Coordinating speed main—with minimum pickup uu “E” speed—from 7E through 200E amperes settings from 25 through 800 amperes (Ideal for fault uu “K” speed—from 8K through 200K amperes interrupters on main feeders. Curves have longer minimum response times and different shapes to uu “T” speed—from 8T through 200T amperes coordinate with tap-interrupter curves.) uu ANSI/U. S. and IEC—conform to IEEE C37.112-1996, “IEEE Standard Inverse-Time Characteristic Equations for Coordinating-speed TCCs can be customized into hundreds Overcurrent Relays” of different curves using a variety of definite-time delay (0 uu Coordinating speed tap—with minimum pickup settings through 1,000 seconds) settings. Ground, negative sequence, from 15 through 400 amperes (Perfect for fault and sensitive earth fault protective settings are also available.

CIRCUIT CONFIGURATIONS

Vista SD Underground Distribution Switchgear

101 110 312 321 330

413 422 431 440

514 523

624 633

Model number indicates the total number of ways as well as the number of load-interrupter switch ways and fault-interrupter ways. For example, Model 431 has “4” ways—“3” load-interrupter switch ways and “1” fault-interrupter way. Other configurations are available at sandc.com.

62 MEDIUM VOLTAGE 63 Open Optional parking stands —lets you readily confirm —permits routine switching to Closed Viewing window Viewing the position the isolating of disconnect Decoupled Optional potential indication featureOptional indication potential be performed by just one person, without cable handling or exposure to medium voltage; includes provisions for low-voltage phasing Cable testing can be performed through the back of a user-supplied elbow or feed-thru bushing. —show —show Operating with mechanism and bus mimic status semaphore indicators the positions of the load-interrupter switch or fault interrupter and isolating disconnect —includes OPEN/RESET, OPEN/RESET, —includes —facilitates remote operation of the load-interrupter switch or fault interrupter; can be Remote Control Pendant Pendant Control Remote Accessory andCLOSE, ENABLE pushbuttons, motor operator and isolating disconnectposition-indicating lamps, and LAMP TEST pushbutton; the pendant is fully submersible and is furnished with a 25- or 50-foot (762- controlor cable 1524-cm) For more information on Vista SD Underground Distribution Switchgear, see S&C publications 695-30 and at sandc.com. 695-31 Motor operator includes receptacles for a wired portable remote control pendant plus an auxiliary switch that tracks the position the isolating of disconnect. decoupled from the operating mechanism to permit testing without changing the switch or fault-interrupter position Optional motor operator motor Optional Coupled SYSTEM VI™ SWITCHGEAR

THE FUNCTIONALITY OF ALL THE ADVANTAGES OF VISTA BREAKER GEAR AT A MUCH LOWER COST UNDERGROUND DISTRIBUTION SWITCHGEAR System VI Switchgear, available in ratings through 38 kV, Like Vista Underground Distribution Switchgear, System VI combines the innovative features of Vista Underground ® Switchgear offers: Distribution Switchgear (see pages 56 through 61) with the uu Compact, low-profile design. Even at 34.5 kV, System versatility of Custom Metal-Enclosed Switchgear (see pages VI gear can be as little as 37 inches (94 cm) tall. And 66 through 69). It’s offered in manual, remote supervisory, System VI gear has a significantly smaller footprint and source-transfer models. than breaker gear. System VI Switchgear features a modular arrangement uu Single- or three-phase protection through 900 of Vista Underground Distribution System sections. Each amperes continuous. Protected by resettable vacuum section includes load-interrupter switches and fault fault interrupters. interrupters sealed in an SF6-insulated, elbow-connected uu No exposure to energized cables and elbows tank. Using gas-tight air-insulated bushings on one or both during routine operations. All switching and sides of the tank, multiple sections are joined together with grounding operations—even voltage testing—can be air-insulated transition bays, which can be furnished with performed quickly and easily by a single person from metering transformers and other equipment. Transition bays the operating panel. can also be used to connect a System VI Switchgear lineup to Custom Metal-Enclosed Switchgear or to a transformer. uu Microprocessor-based overcurrent control. This provides advanced, flexible protection. An external- trip option allows fault interrupters to be tripped from transformer-secondary or sudden-pressure relays. uu It’s affordable. System VI gear offers significant savings over breaker gear.

System VI Switchgear lineup featuring two four-way Vista Underground Distribution System units, with provisions for future expansion. Transition bays house air-insulated bushings.

64 MEDIUM VOLTAGE 65 — — 12 500 12 500 12 500 25 000 25 25 000 25 25 000 25 (12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25 Second, Sym. Second, Mom. and One- —hinged for I Outdoor Finish ™ I

① Load-Interrupter Switch Load-Interrupter 600 600 600 600 600 600 (630) (630) (630) (630) (630) (630) Cont. and Cont. Termination compartment Termination accommodates cables, elbows, surge accommodates arresters, feed-thru and inserts Load Dropping Load S&C’s Ultradur the industry’s best finish—protects enclosure from corrosion Padlockable lift-up covers lift-up Padlockable convenient access the to operating and compartmentstermination Single-linediagram 12 500 12 500 12 500 25 000 25 25 000 25 25 000 25 (12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25 Fault-Interr., Sym. Ten-Time Duty-Cycle Amperes, RMS ① Fault InterrupterFault 200 200 200 600 600 600 (630) (630) (630) (200) (200) (200) Cont. and Cont. SYSTEM VI SYSTEM SWITCHGEAR Load Dropping Load 50/60-Hz ANSI Ratings—IEC Ratings in Parentheses For more information on System VI Switchgear, see S&C at sandc.com. publications and 691-701 691-700 Sym. 12 500 12 500 12 500 25 000 25 25 000 25 25 000 25 (12 500) (12 500) (12 500) (25 000) (25 (25 000) (25 (25 000) (25 Short-Circuit, ① 600 600 600 (630) (630) (630) Current —all isolated Main Bus Cont. 95 BIL —lift 150 125 (95) (125) (150) —Unit shown has four —any with operating operating with

—includes voltage voltage —includes 29 38 (29) (38) 15.5 Max (15.5) kV 27 38 (12) (24) (36) 15.5 Class Higher ratings are possible. Consult the nearest S&C Sales Office.

System Operating panel Operating optional windows, viewing mechanisms, low- optional and indicators, voltage provisions phasing voltage cables medium-voltage from Outgoing sectionOutgoing ways, each with single-pole fault interrupters; three-pole fault interrupters available also are Metering bay Metering and current transformers (door removed to show internal components) Incoming sectionIncoming load-interrupter of combination switches and fault interrupters can be furnished, for a total of five ways per modular tank; unit shown has two load-interrupter switches Voltage indicators Voltage up to reveal large viewing windows System VI Switchgear with Vista Underground Distribution Switchgear Incoming and Outgoing Sections and Air-Insulated Metering Bay Metering Sections Air-Insulated Outgoing and and Incoming Switchgear Vista Distribution Underground with Switchgear VI System ① CUSTOM METAL-ENCLOSED SWITCHGEAR

Custom Metal-Enclosed Switchgear, rated 4.16 kV through Single-phase protection for single-phase loads. 34.5 kV, features reliable, time-tested fuses and manual or Fuses—unlike circuit breakers—selectively isolate only power-operated interrupter switches in rugged 11-gauge faulted phases of feeders serving single-phase loads. steel enclosures. These enclosures are configured into THREE-FOLD ECONOMY integrated packages that provide application flexibility, operating simplicity, and superior dependability in Low purchase cost. Economies inherent in the interrupter switching and protecting medium-voltage power switch and fuse-protection concept translate into significant circuits in commercial, institutional, industrial, and high- first-cost savings. rise installations. S&C’s expertise in this field has been Low installation cost. Metal-enclosed switchgear, light established through nearly 75 years of metal-enclosed in weight in comparison with breaker gear, is easy to switchgear design and manufacture. UL and arc-resistent handle and needs no foundation or support channels, designs are available. only a level floor or pad. Multibay lineups assemble with a POWER SYSTEM-MATCHED minimum of interbay bolting, and inter-unit bus connections SWITCHING AND PROTECTION need no taping. Simple field assembly—with no relays to set and test—means less time, equipment, and manpower. Full-load switching, plus S&C’s unique one-time and Future additions are readily accommodated as your two-time duty-cycle fault closing. S&C interrupter system expands. switches carry and interrupt rated load currents, even after being inadvertently closed into available fault currents Low maintenance cost. S&C fuses are nondamageable and corresponding to their fault-closing ratings. You can restore do not require any maintenance or calibration to perpetuate power quickly without first having to repair the switches. the accuracy of their time-current characteristics. S&C interrupter switches are maintenance-free, requiring only One-cycle total clearing with S&C SM Power Fuses. an occasional exercising. S&C gear just needs a check of the Compare this to the 5 cycles or more required by circuit insulators and, if necessary, a simple cleaning. breakers. This simplifies upstream coordination, minimizes short-circuit stresses on the system. SIMPLIFIED POWER-SYSTEM PLANNING Choice of unique response curves with maintenance- Simple, reliable, economical—Custom Metal-Enclosed free S&C Electronic Power Fuses. They provide protection Switchgear is readily configured into basic circuit unavailable with any other device—even circuit breakers, arrangements that make power-system planning and design with their relays and batteries. easy, and implementation is logical and straightforward. The basic arrangements shown on page 69 are often Three-phase protection for three-phase loads. combined to handle even the most complex distribution S&C open-phase detectors and overcurrent relays isolate system needs, ensuring maximum service continuity for three-phase loads from single-phasing and other open- extremely critical loads. phase conditions.

MAXIMUM 60-HZ SHORT-CIRCUIT RATINGS AND THREE-PHASE LOAD CAPABILITY① Nominal 4.16 4.8 13.8 25 34.5 Voltage, kV Maximum 4.8 5.5 17.0 29 38 BIL 60 60 95 125 or 150 150 or 200

Switchgear Ratings Main Bus, Continuous, Amperes 600, 1200, or 2000 Amperes, RMS, Symmetrical 37 500 40 000 25 000 40 000 25 000 40 000 25 000 17 500 Short-Circuit, and Duty-Cycle MVA, Three-Phase Fault-Closing Symmetrical at Nominal 270 290 210 330 600 960 1080 1050 Voltage Maximum Three-Phase Load Continuous Load, kVA 5 200 4 300 6 000 5 000 17 200 14 300 25 900 17 900 per Fused Feeder (at nominal voltage) Permissible Peak Load, kVA 5 700 5 800 6 600 6 700 18 900 19 100 34 500 22 400

① Consult the nearest S&C Sales Office for 50-hertz ratings.

66 MEDIUM VOLTAGE 67 ustom Metal- C

—permits —permits S&C Custom —allows large large —allows

and is economical is and

S&C Custom Metal-Enclosed Custom S&C

in-plant systems to be supplied power through one switching center because both utility sources are fully used under normal operation, with the two source interrupter switches closed and the bus-tie switch open; each source, in effect, is the preferred source for its bus section and the alternate source for the other bus section Split-bus primary-selectiveSplit-bus Metal-Enclosed Switchgear —ensures a higher level of service continuity utility (Two SELECTIVE SOURCE 2 SOURCE Y- BUS SPLIT- SERVICE-ENTRANCE SWITCHING CENTER PRIMAR UTILITY SOURCE 1 UTILITY UTILITY Common-bus primary-selective Common-bus Switchgear sources—one source preferred, theother alternate—supply power to the metal-enclosed switchgear. A power-operated interrupter switch for each source plus a source-transfer control effect automatic two- way transfer in primary-selective switchgear. Interrupter switches with power fuses switch and protect the load circuits. In this example, two are manually operated, while the third is power operated, with an electronic overcurrent relay and switch operator providing automatic three-phase isolation when a fuse operates.) A radial system is the simplest system simplest the is system radial A extensive use of dedicated radial circuits (The direct circuitry facilitates quick location and repair of faulted circuits. Segmentation of a distribution system with multiple radial circuits limits the extent service of interruption caused by faults. In this example, the service-entrance bay of the S&C Enclosed Switchgear is provided with electronic power fuses to achieve full coordination with the upstream protective device.) F E SELECTIVE Y- SOURCE 2 SOURCE SOURCE 1 SOURCE Y COMMON-BUS PRIMAR SERVICE-ENTRANCE SWITCHING CENTER UTILITY UTILIT S O Z S D S O V S SERVICE-ENTRANCE SWITCHING CENTER FEEDER BAYS S O N.O. S T C S O V S For more information on Custom Metal-Enclosed Switchgear, see S&C publications 620-55, 620-700, at sandc.com. and 621-30 BUS-TIE SWITCH METERING BAY S O V S F E N.O. S T C S O V S UTILITY SOURCE F E METERING BAY ENTRANCE BAY CUSTOM METAL-ENCLOSED SWITCHGEAR

MATCHLESS CONSTRUCTION Unique Ultradur® II Outdoor Finish. The system provides FEATURES ENSURE LONG SERVICE LIFE lasting corrosion protection that cuts maintenance costs. And Rugged unitized 11-gauge steel construction. Each bay is all hardware is galvanized, zinc-nickel plated, or of stainless a monocoque unit with an integral channel base around all steel or nonferrous materials to resist corrosion. four sides. There are always double walls between adjoining bays. Accurately formed matching enclosures ensure perfect Special gasketing or sealants. These provide weathertight alignment in multibay lineups. seals at door openings, top and side edges of adjoining bays and interbay bus openings, and the roof. No exposed bolts on enclosure sheets or roofs to attract vandals. Even future bus extensions are internally secured. Insulating “no-drip” compound. Located on the underside of the roof, checks condensation. Comprehensive access controls. All doors have heavy- duty latches and hinges and are padlockable. Manual switch Cypoxy™ Insulators, S&C's cycloaliphatic epoxy resin handles are padlockable in Switch-Closed and Switch-Open system. These insulate all live parts from ground and provide positions. Snaplocks or interlocks further limit access. greater leakage distances. Optional through-bushings provide isolation between bays. Wide bulkhead-type doors. These doors provide convenient front access for cable termination. No need for Heavy-duty bails on all cable-termination rear access; gear can be placed back to back or against a wall, points and the ground bus. These accommodate portable in minimal floor space. grounding equipment.

Inner screen doors. Bolted closed, these doors are a second Bus connections. Protected by an oxide-inhibiting barrier against inadvertent entry. compound, these connectors are bolted to a uniform torque. Special-purpose washers and bolts maintain Category A enclosures. With the simple addition of optimum contact pressure. padlockable covers over windows and meters, S&C gear provides the industry’s highest security for this class of equipment.

Hinged pressure-relief flaps—open instantly to relieve overpressure from an internal arc Specially strengthened door hinges and double door gaskets—maintain the integrity of the enclosure and provide extraordinary sealing Front-facing vents—located at least 6½ feet (198.1 cm) above ground, provide additional means for relieving arcing by-products

Arc-resistant models—minimize the potential for injury to nearby operating personnel if a fault occurs within the gear (Passes rigorous certification testing requirements of EEMAC Standard G14.1; can be installed outdoors or indoors with suitable venting.)

68 MEDIUM VOLTAGE 69 — Source-

® transfer is

nterrupting .

.

. i —applied on

.

Source-Transfer Source-Transfer (pictured)—ideal for

® —minimize (pictured)—available (pictured)—superior to (pictured)—superior to Transfer Control Transfer Type MS SwitchType Operators provide high-speed automatic trip-open Mini- of operation RupterSwitches . time is 4 cycles; these operators are available in a choice of trip- automatic or manual operation closed The MS-2 Type Switch Operators use with the Micro-AT Electronic Relays feeders, protect load individual three-phase loads from single- phasing resulting from blown fuses and other open-phase conditions The ZSD Type Overcurrent Relays they ordinary relays; overcurrent can distinguish between fault transformer and current inrush current Micro-AT achieved in as little as 20-25 cycles Source-Transfer Micro-AT The Controls with a widechoice of options interruptions resulting from loss of one source . Controls

® —handle Switches

® —offered in a Electronic Power

® —with their exceptional (pictured)—rated through 600 amperes continuous and interrupting; Alduti-Rupter Interrupter Switches Interrupter all live-switchingduties and feature duty-cycle fault-closing ratings, a requisite for automatic schemes control Mini-RupterThe Switches rated through 1200 amperes and continuous available also interrupting are Fuses versatilityTCC and higher currentcontinuous ratings, performance and features provide previously any in unavailable device protective The Fault Fiter Fuse (pictured)— rated 600 amperes max continuous. Paralleled Fiter Fault Fuses provide1200-ampere protection Fault Fiter Fault SM Power Fuses wide variety of ampere ratings and time-current characteristics, permitting close fusing ratios and coordination optimal for maximum protection; their time- characteristicscurrent precise are accurate permanently and The SM-40 Type Power Fuses (pictured)—rated 400 amperes max continuous; other SM Type Power Fuses are available in ratings from 200 through 720 amperes max continuous A wide choice of S&C components—exhaustively tested, field-proven, and of unequaled performance and operational dependability—all expressly designed solve to your power distribution problems FAULT TAMER® FUSE LIMITER

THE NEW GENERATION OF from lightning strikes. The Fault Tamer Fuse Limiter’s high PROTECTION FOR POLE-TOP TRANSFORMERS inrush-withstand capability eliminates this problem because S&C’s Fault Tamer Fuse Limiter combines a series fuse and arresters can be tank-mounted without concern for nuisance backup limiter in one powerful package that can be easily fuse operations. incorporated into new or existing installations of 14.4-kV, IMPOSSIBLE TO MISMATCH SERIES FUSE AND LIMITER 25-kV, and 34.5-kV overhead pole-top transformers. Fault In cutouts with bolt-on backup current-limiting fuses, it’s Tamer Fuse Limiters provide short-circuit protection to the possible to inadvertently apply the wrong size fuse link, thus system, limit let-through current to a level that will minimize jeopardizing the integrity of your coordination plan. But catastrophic transformer failures caused by high-magnitude the clearing characteristics of the Fault Tamer fuse cartridge internal faults, and minimize damage from high-magnitude are matched to that of the backup limiter so coordination is external faults such as bushing flashovers. Fault Tamer Fuse ensured. Limiters offer major benefits over conventional fuse cutouts, including cutouts appendaged with bolt-on backup current- SIMPLER HANDLING limiting fuses. Re-fusing a bolted-in backup current-limiting fuse means IMPROVED SERVICE CONTINUITY climbing the pole, or using a bucket truck, to remove the fuse with a wrench—a time-consuming procedure that requires Conventional fuse cutouts have limitations that can wearing gloves and other safety garb. compromise service continuity. For example, close to substations—where fault currents can be high—complete But re-fusing Fault Tamer Fuse Limiters is quick and easy. coordination frequently is not possible between the fuse Because the device’s combination fuse tube and backup link protecting a pole-top transformer and the upstream limiter drops open after a fault-clearing operation, it can lateral fuse link. As a result, a large-magnitude fault, such as be removed from the mounting from the ground using an a wildlife-induced flashover of a transformer bushing, cannot extendostick. The process is made even easier by use of S&C’s only cause the transformer fuse link to operate but the lateral Talon™ Handling Tool. fuse link as well, exposing all customers on the lateral to an extended outage. Fault Tamer Fuse Limiters eliminate this RETROFIT EXISTING INSTALLATIONS problem because they coordinate with lateral fuse links over Fault Tamer Fuse Limiters are designed to fit into all vintages the full range of fault currents. of S&C and MacLean Power Systems Type XS Fuse Cutout Mountings. You can upgrade to the Fault Tamer Fuse Limiter’s And, unlike conventional cutouts, a Fault Tamer Fuse Limiter’s superior current-limiting protection at minimal cost. current-limiting action provides clearing characteristics that coordinate with the instantaneous setting of the substation HEIGHTENED SAFETY circuit breaker, thus eliminating unnecessary momentary The Fault Tamer device’s backup limiter features internal interruptions for transformer faults exceeding the breaker’s exhaust control, which prevents fuse-cartridge parts from instantaneous setting. being expelled during a fault-clearing operation. In contrast, conventional fuse cutouts—even fuse cutouts with bolted-on ENHANCED POWER QUALITY backup current-limiting fuses—can violently expel fuse-link High-magnitude faults near a substation can suppress the parts during operation, creating a potential exhaust hazard voltage on the substation bus and on feeders emanating to operating personnel. from the substation. The Fault Tamer Fuse Limiter’s current- limiting action clears high-magnitude transformer faults As such, the Fault Tamer Fuse Limiter provides an extremely before voltage dips can damage or shut down sensitive significant reduction in fire hazard when compared with electronic equipment served by adjacent feeders. conventional fuse cutouts. The device complies with Spark Production Class A in Australian Standard AS 1033.1-1990, MAXIMUM SURGE PROTECTION which requires that no sparks may be produced during a fault- Voltage surges are a major cause of overhead transformer clearing operation. failure. Maximum protection from overvoltages can be achieved by mounting the surge arrester on the transformer MATES PERFECTLY WITH LOADBUSTER® — tank, thus shortening the lead from the arrester to the THE S&C LOADBREAK TOOL transformer winding and to ground. But with the surge Using S&C’s portable loadbreak tool, live switching can be arrester connected to the load side of a conventional cutout, done at the point that minimizes the length of planned the fuse link is more susceptible to nuisance operation outages and the number of customers affected.

70 MEDIUM VOLTAGE 71 —replaced —stainless —provides —provides Spring-and-cable assembly steel spring provides high-speed elongation of arc when fuse cartridge cable copper operates; load carries spring inside current fault) (and include NEMA Type Current in amperes Current Fuse cartridge Fuse operation fault-clearing after a Dropout mechanism Dropout operation of indication dropout

— Optional features B and extended mounting brackets, and stainless steel inserts and hardware.

Seconds in Time Fault Tamer Fuse Limiter TCC Curves TCC Limiter Fuse Tamer Fault —also guide - Fuse-tube cap 2 000 2 Sym. Interr., 12 000 12 12 000 12 000 12 000 12 000 12 1 Amperes, RMS 20 20 20 20 20 20 Cont. Attachment hooks for Loadbuster hooks for Attachment Tool Loadbreak S&C The tubeduring closing  BIL 110 150 125 125 150 8.7 8.7 For more information on the Fault Fuse Tamer Limiter, see publications at sandc.com. and 451-31 451-30 15.1 15.115.1 150

20.8 Neutral Phase-to- 50 Hz ① 15 15 — 26 26 26 Three- Phase 50/60-Hz Ratings — 8.7 8.7 22 FAULT TAMER FUSE LIMITER TAMER FAULT 16.8 16.8 16.8

System MaximumSystem Voltage, kV Neutral Phase-to- 60 Hz — ① 15 15 — 29 29 29 —replaced Three- Phase —lighter and more rugged, and provides better provides and rugged, more and —lighter 22/38 15 (12) 15 (12) 25 (24) 25 (24) 25 (24) (20.8/36) IEEE (IEC) Also applies to phase-to-phase applies to Also single-phase applications. Applications involving transform Mounting with porcelain insulator meets 170-kV BIL rating requirement of IEC System Class, after high-magnitude a fault- operation clearing Backup limiterBackup Trunnion Birdproof-design Birdproof-design insulator porcelain exceeds insulation requirements specified inANSI cutout and IEC high-voltage fuse standards Parallel-groove connector Parallel-groove other styles available are Also available with composite-polymer with available silicone Also insulator dielectric performance in hostile environments dielectric hostile performance in ① ers connected phase-to-phase, as well as three-phase applications, require the use of a Fault FuseTamer Limiter in each lead. Publication 282-2. Publication  TYPE XS FUSE CUTOUTS

AN UNEXCELLED CUTOUT SUPERIOR MECHANICAL PERFORMANCE FEATURES Type XS Fuse Cutouts, when fused with S&C Positrol® Fuse uu Simple fuse-link installation. Even with gloved hands. Links, provide full fault-spectrum protection for overhead The carefully proportioned flipper can be readily held in distribution systems rated 4.16 kV through 25 kV, whether place while the large, easy-to-grasp cable clamping nut is applied to overhead transformers, capacitors, cables, or lines. being tightened. This performance also extends to solidly grounded systems uu Easy fuse-tube insertion and removal. Careful steering rated 26.4 kV through 34.5 kV for protection of single- or manipulation is not required to hang the tube in the phase-to-neutral lines and transformers and grounded-wye cutout or to remove it. The fuse-tube lower ferrule can be connected capacitor banks. “Full fault-spectrum protection” hookstick-engaged either by its large, accessible lifting means Type XS Fuse Cutouts interrupt all faults—from the ring or its equally accessible hookstick keyhole. lowest current that will melt the fuse link to the maximum uu Superb alignment when closing. From the front or rated interrupting current—under all realistic transient side and from the pole, the ground, or a bucket truck. In recovery-voltage conditions. the first stage of closing, the fuse tube is restrained from SINGLE VENTING – DOWN AND AWAY tilting left or right by broad guiding surfaces at the hinge. All Type XS Fuse Cutouts use an S&C-developed innovation: When the tube is slammed into the upper contact, it is single venting . . . down and away only . . . an especially further controlled by Loadbuster® —The S&C Loadbreak important feature where exhaust must be kept out of other Tool attachment hooks. At the end of the closing stroke, phases in overbuilt circuits. There are no costly-to-replace the fuse-tube cap wipes in and seats squarely in the expendable fuse-tube caps. detent-type latch, which won’t rebound and release like so-called “positive” latches. VOLTAGE RATINGS uu No fuse-link breakage. The high reduction ratio of the Type XS Fuse Cutouts are assigned single-value nominal Type XS Fuse Cutout flipper lever system allows the high- voltage ratings and can be applied without restriction on all impact forces on closing to be absorbed before they reach three-phase systems having a system maximum operating the fuse link. voltage (line to line) less than or equal to the cutout uu Completely reliable dropout action. Regardless of fault- maximum voltage. In highly contaminated environments, a current level. As the high-speed, spring-loaded flipper cutout with a higher voltage rating may be used to provide rapidly withdraws the fuse-link cable, the hinge toggle is extra leakage distance. released, permitting the upper-contact spring to drive the RUGGEDNESS fuse tube down and away into the open position. The mechanical construction of the Type XS Fuse Cutout EVERY TYPE XS FUSE CUTOUT is rugged and strong: it is designed to withstand the IS A LOAD-SWITCHING POINT interruption forces of heavy fault currents and the typically When used with the Loadbuster tool, the cutout becomes forceful closing-in by operating personnel. a switching device for no-external-arc live switching of The upper contact and the hinge are attached to husky transformers, capacitors, lines, or cables. There’s no need for steel supports by means of ½-inch galvanized steel carriage complex dead-switching procedures. You can minimize the bolts and are further secured by a key-and-slot construction length of planned outages and the number of customers designed to resist torsional forces during closing operations. involved.

SUPERB CURRENT TRANSFER The XS Fuse Cutout’s Loadbuster attachment hooks keep Upper and lower contacts feature heavily silver-clad, spring- the portable tool positively anchored throughout its entire loaded, embossed surfaces for built-in wiping action, opening stroke, yet allow for easy removal of the Loadbuster resulting in minimum electrical resistance. tool. Attaching the Loadbuster tool to the XS Fuse Cutout cannot cause the fuse tube to drop open prematurely.

Single-shot Overhead—Pole-Top Style Type XS Fuse Cutouts are sold in the United States and Canada by MacLean Power Systems, macleanpower.com.

72 MEDIUM VOLTAGE 73 ◆ ◆

216 216 216 216 432 432 432 279 279 279 279 mm 660 660

— ◆ ◆ Ground, Ground, Leakage Minimum Distance to Liner 11 11 11 11 17 17 17 26 26 8½ 8½ 8½ 8½

™

Inches ensures reliable ensures —tin-plated- 00 00 00 00 00 00 000 000 000 9 6 9 6 9 6 9 6 8 8 6 4 6 4 8 12 800

—The S&C Loadbreak —The

® —silver-to-silver; stainless stainless —silver-to-silver; Toggle joint Toggle after interruption dropout Interr., Asym. Interr., —— —— —— 8 000 8 8 000 8 60 Hz 50 Hz 12 000 12 12 000 12 12 000 12 000 12 16 000 16 10 000 10 10 000 10 10 000 10 —cast red brass; pinned to top features Multi-Wind features Tool—guide the tube during closing Rugged attachment hooks for hooks for attachment Rugged Loadbuster Amperes, RMS 100 100 100 200 200 200 Cont. TYPE XS FUSE CUTOUTS Upper contacts Upper steel spring provides high contact pressure Fuse tube Fuse virtually impervious to water ingress (Special UV-resistant finish ensures long life; models with disconnect blade available.) also are Parallel-groove connector Parallel-groove castred brass. For ease of connection, accommodates two conductors, even of unlike size; other connector styles are also available 50/60-Hz Ratings Sturdy ferrules Sturdy and bottom of tube for permanent alignment Disconnect 300 Disconnect Disconnect 300 Disconnect Disconnect 300 Disconnect BIL 110 150 125 15 27 kV Max M 25

14.4 Nom. ◆ eets 170-kV BIL rating requirement of IEC Publication 282-2. For more information on XS Type at sandc.com. Fuse Cutouts, and see 351-705 publications 351-31, 351-30, — include B and extended NEMA Type

(not —high-strength —gives high-speed —secures Flipper terminal separation, quick cable flip-out, and (in conjunction with the toggle joint) reduces transmission of forcesto fuse link during closing tube in hinge during closing Trunnion Trunnion pocket Trunnion cast bronze, silver plated; surfaces trunnion the around bear on broad hinge surfaces to keep the tube in alignment during closing Lower contacts Lower visible)—silver-to-silver; provide dual-current path, hinge of independent pivot Birdproof-design Birdproof-design insulator porcelain exceeds insulation requirements specified inANSI cutout and IEC high-voltage fuse standards; both supports and mounting inserts are with anchored permanently unique inorganic S&C’s through proven cement, fielddecades of experience mounting brackets and a sea-coast design featuring stainless steel components and hardware. Optional features POSITROL® FUSE LINKS

Positrol Fuse Links, with their precise time-current carefully checked purity and conductivity are drawn through characteristics (TCC), nondamageable fusible elements, precision dies to exact cross sections confirmed by laser and superior fault-interrupting ability, give you the ultimate micrometer. And painstaking assembly ensures no nicks, in fuse-link performance. They eliminate “sneakouts” no kinks, and no necking down that might compromise (uncoordinated blowings caused by TCC shifts) and the need TCC accuracy. Elements are swaged to their terminals for to call on upstream protective devices to do the fuse link’s permanent, nondamageable connections. work, thereby saving operating dollars and improving service SUPERIOR FAULT-INTERRUPTING PERFORMANCE reliability—two factors that are crucial in today’s competitive environment. The exceptional features of Positrol Fuse Links The fuse link—not the cutout fuse tube—determines make all of these benefits possible. the ability of a cutout to interrupt low-magnitude fault currents, particularly transformer secondary-side faults with NONDAMAGEABLE AND PERMANENTLY ACCURATE their severe transient recovery voltages (TRVs). Extensive Positrol Fuse Links aren’t affected by aging, vibration, or testing through the full spectrum of secondary faults— surges that heat the element nearly to the severing point. with realistically severe TRVs—has proved the matchless They’re nondamageable, so they operate only when they performance of Positrol Fuse Links, whether applied in single- should—not when they shouldn’t. They won’t sneak out. vented or double-vented cutouts. These links, with their To a utility, the savings are significant. Positrol Fuse Links controlled-burst-strength extruded thermoplastic sheaths, eliminate those costly excursions to find and replace reliably interrupt all levels of secondary-fault currents on needlessly blown fuse links. systems through 27 kV and in single-phase-to-neutral applications on systems through 38 kV. And because Positrol Fuse Links are nondamageable, there’s no need for “safety zones” or “setback allowances.” Close BROAD SELECTION OF SPEEDS fusing is achievable without fear that changes in time- Positrol Fuse Links are available in six speeds: T, K, QR current characteristics will occur—causing troublesome (interchangeable with “QA” speed offerings), N, Standard, departures from your carefully orchestrated protection and and Coordinating. coordination plans. The enduring permanency of Positrol TCCs has been repeatedly demonstrated by exhaustive All these speeds, plus a selection of current ratings from full-scale laboratory testing. 1 through 200 amperes, make optimal coordination and maximum protection a practical reality at every sectionalizing TIGHT TOLERANCES point, riser pole, distribution transformer, and capacitor bank. Positrol Fuse Links have exceptionally tight tolerances— EASY TO APPLY typically half those of other fuse links—which means they can be counted on to clear faults faster. Tight tolerances Easy-to-use application information, developed with the and nondamageability combine to allow you to choose a same attention to detail as the Positrol Fuse Links themselves, minimum-size link for each application, ensuring maximum is available to facilitate selection of S&C Fuse Links. Request protection and enhanced coordination. With Positrol Fuse S&C Data Bulletin 350-110 for transformer protection, Links, you can even coordinate adjacent ampere ratings. S&C Data Bulletin 350-130 for capacitor protection, or S&C Information Bulletin 352-170 for series coordination. These superb performance characteristics of Positrol Fuse These comprehensive application guides take the work Links are the result of uncompromising design, plus diligent out of selecting the fuse link best suited to each protection attention to manufacturing details. The fusible elements of requirement. silver, silver-copper eutectic, and nickel-chrome (depending on rating) are inherently nondamageable. Wire materials of Positrol Fuse Links are Rural Utilities Service accepted.

74 MEDIUM VOLTAGE 75 10T Std. 10 10K 10QR 10N 000 103

200 200T 200K 200N 200QR –

– – – – –

1 101 6T 6K 5N 1QR Available Ratings, AmperesAvailable 01 10 Current in amperes Current POSITROL FUSE LINK RATINGS T K N QR Speed 10 Standard 1 0

10

Coordinating 0.1 10 Seconds in Time 0.01 1000 Speed Comparison Example Comparison Speed —permits —permits —not soldered, soldered, —not —prevents For more information on Positrol Fuse Links, see S&C publications at sandc.com. and 352-30 352-31 —restrains static —for unmatched full-fault-—for unmatched —resists corrosion and is of Swaged cable section cable Swaged splaying of strands and wadding of cable during the interrupting process, ensuring positive withdrawal of the cable from the sheath Controlled-burst-strength sheath performance spectrum interrupting Strain wire Strain force of the cutout flipper spring swaged are Terminals element nondamageable providing connections plus a permanent grip of the strain wire and cable Helically coiled fusible element— fusible coiled Helically not subject to mechanical or thermal from damage stresses vibration or Removable buttonheadRemovable use of Positrol Fuse Links in cutouts rod arc-shortening without or with Tinned copper stranded stranded copper Tinned cable a diameter sized to resist corona SMD-20 POWER FUSES SMD-40 POWER FUSES

SMD Outdoor Distribution Fuses are internationally SMD-40 Power Fuses use the same time-proven low-arc- recognized for their superb protection of transformers, lines, energy fault-interrupting technique as SMD-20 Power Fuses. cables, and capacitor banks in distribution substations and A stainless steel outdoor silencer virtually eliminates the on overhead feeders. SMD-20 and SMD-40 Power Fuses, with noise and reaction forces ordinarily associated with outdoor their SMU Fuse Units, provide full-fault-spectrum protection. power fuses. These lightweight fuses are easily handled using They detect and interrupt all faults—large, medium, and a universal pole equipped with an S&C Large Clamp. small (even down to minimum melting current)—with line- SMU FUSE UNITS … PRECISE PERFORMANCE to-line or line-to-ground voltage across the fuse, whether the fault is on the primary or secondary side of the transformer SMU-20® and SMU-40 Fuse Units have silver or pretensioned and regardless of the transformer-winding connection. nickel-chrome fusible elements that are drawn through precision dies to very accurate diameters and are of SMD-20 Power Fuses are designed expressly for today’s solderless construction, brazed into their terminals. Melting distribution systems, where higher fault currents, higher time-current characteristics are precise, with only 10% total voltages, and higher loads commonly push cutouts beyond tolerance in melting current, compared to the 20% tolerance their capabilities. SMD-40 Power Fuses are specially suited of most fuses. to the high continuous-current and fault-interrupting requirements of distribution substations. … NONDAMAGEABLE CONSTRUCTION

SMD-20 Power Fuses are offered in the pole-top style Helical coiling of the fusible elements and the absence of for overhead use as well in four different station styles, in constraining filler materials result in elements that are free voltages through 38 kV and a continuous-current rating of from mechanical and thermal stresses. SMU Fuse Units 200 amperes. Interrupting ratings are as follows: conform to their time-current characteristics—not only initially, but on a sustained basis. Neither age, corrosion, or SMD-20 POWER FUSES vibration, nor surges that heat the element nearly to the Interrupting Rating, Voltage Rating, kV severing point, will affect the characteristics of these fuse Amperes, RMS, Sym. units. With nondamageable construction, there is no need Nom. Max 60 Hz 50 Hz to adjust the minimum melting curves for “safety zones” or 14.4 17.0 14 000 11 200 “setback allowances” as required for other fuses. 25 27 12 500 10 000 34.5 38 10 000 8 000 … SUPERIOR LOADING CAPABILITY

SMD-20 Power Fuses use a unique solid-material, low-arc- SMU Fuse Units are designed to accommodate, not energy technique of fault interruption that produces a mild interrupt, all anticipated loading levels, including daily and exhaust, with only 20% the arc energy of a cutout. Clearances repetitive peak loads as well as hot- and cold-load inrush can be keyed to fuse-handling requirements, not fuse- currents. Unlike current-limiting fuses, SMU Fuse Units have exhaust behavior, allowing structures to shrink to minimum peak-load capabilities in excess of their normal ampere phase spacings. rating. This generous loading capability, combined with precise conformance to time-current characteristic (TCC), SMD-40 Power Fuses are offered in vertical and cluster nondamageability, and a broad selection of fuse-unit ampere styles for substation use, in voltages through 29 kV and ratings and speeds, permits the ultimate in close fusing for a continuous-current rating of 400 amperes. Interrupting maximum protection and optimal coordination. ratings are as follows: … OUTSTANDING PROTECTION FOR TRANSFORMERS SMD-40 POWER FUSES Interrupting Rating, The exceptional peak-load capabilities of SMU Fuse Units Voltage Rating, kV Amperes, RMS, Sym. permit the use of low fusing ratios while accommodating Nom. Max 60 Hz 50 Hz the high loading and inrush currents of distribution 4.8 5.5 25 000 20 000 transformers. These low fusing ratios mean fast clearing 14.4 17.0 25 000 20 000 of faults. Transformer mechanical and thermal stresses 25 29 20 000 16 000 are minimized, extending transformer life, and the faulted

76 MEDIUM VOLTAGE 77 —helically —helically —initiates — —prevents —silver-clad copper —silver-clad —magneformed onto glass- —with exceptionally durable, —expanded into a glass-epoxy coiled to absorb mechanical vibration and thermal shock Tin-plated red brass exhaust ferrule epoxy tube Drive spring Drive contact Tulip spring-loaded Solid-material arc-extinguishing medium rod Arcing glass-epoxy Filament-wound tube ultraviolet-resistant finish element fusible Silver Upper seal ingress water Tin-plated conducting copper tube outer tube for a positive water seal Latch-actuating pin drop-open action for easy fuses blown of identification SMU-20 Fuse Unit (SMU-40 Fuse Unit is Fuse similar) Unit (SMU-40 Fuse SMU-20 400E

400E

— — — SMU-40 1— Fuse Units 15E— Available Ratings, AmperesAvailable

—The S&C Loadbreak Tool, S&C—The Loadbreak Tool, SMU-20 1—200E 3K—200K

® Fuse Units 15E—200E 50E—200E 3DR—20DR For more information on SMD-20 and SMD-40 at sandc.com. Power and Fuses, 242-704 see 242-700, publications 242-32, 242-31, SMU FUSE UNIT RATINGS 0 Fuse Units permit0 Fuse upstream protective devices 4

S&C K Speed S&C DR S&C Slow S&C Standard S&C Very Slow EVERY SMD-20 AND SMD-40 SMD-40 AND SMD-20 EVERY POWER FUSE IS A LOAD-SWITCHING DEVICE SMD-20 and SMD-40SMD-20 become Fuses switching devices Power for no-external-arc switching of live transformers, lines, cables, and capacitors. no need There’s for complex system- switching procedures—you can the minimize length of planned outages and the number of customers involved. SMD-20 and SMD-40SMD-20 Service Utilities are Rural Fuses Power accepted. to beto set for faster operation, reducing system short-circuit curve shapes facilitate Units’ stresses. TCC Fuse And SMU complete coordination with downstream protective devices. When used with Loadbuster … AND… FOR SECTIONALIZING POINTS When installed sectionalizing at points and cable risers, these fuses protect against permanent faults easily and coordinate with reclosers. The fusing low ratios possible with SMU-20 and SMU- … FOR CAPACITOR BANKS CAPACITOR FOR … In protecting pole-top and small-station capacitor banks, the high peak-load capabilities exceptionally again allow close fusing, evolving so faults even within individual capacitor units can be detected andcleared. transformer quickly is isolated, minimizing the impact on the distribution system. fuses In contrast,current-limiting provide significantlyless through-faultprotection because their susceptibility damage, limited loadability, to and steep TCCs the in needresult for markedly higherampere ratings. SMD-20 POWER FUSES SMD-40 POWER FUSES

Overhead—Pole Top-Style SMD-20 Mountings

Latch and upper-contact assembly— Wide variety of connector prevents the fuse unit from dropping open options available because of vibration or shock or when hot- washed; ensures positive latch release for Attachment hooks for the dropout when the fuse unit operates Loadbuster ®—The S&C Loadbreak Tool—also provide self-guiding action Models through 25 kV are for fuse unit during closing available with a composite- polymer silicone insulator— lighter and more rugged, and it provides better dielectric performance in hostile Pull-ring—carefully contoured environments for reliable operation from pole Models through 35 kV are or bucket, with a Loadbuster available with porcelain tool or hookstick insulator—provides insulation characteristics higher than IEEE distribution- SMU-20 Fuse Unit. cutout standards and equal in most cases to IEEE switch and bus standards; available with stainless steel inserts and hardware Mounting bracket and hardware are included for both insulator models.

Silver-clad contacts throughout—backed by prestressed loading springs, feature built-in wiping action OVERHEAD—POLE-TOP STYLE SMD-20 MOUNTINGS

50/60-Hz Ratings Leakage Distance Hinge-and-lower-contact kV Amperes, RMS to Ground, Minimum assembly—guides fuse unit Polymer Porcelain during closing for on-center Interr., Sym. approach, even when operated Nom. Max BIL Max Insulator Insulator from an adverse angle 60 Hz 50 Hz Inches mm Inches mm 200E or 125 14 000 11 200 —— 11 279 200K 14.4 17.0 200E or Station-Style SMD-20 Mountings 150 14 000 11 200 19 483 17 432 200K

200E or —— 17 432 Available with Cypoxy™ or porcelain station-post insulators. 25 27 150 12 500 10 000 200K 35½ 902 26 660 200E or 34.5 38 200 10 000 8 000 —— 25½ 648 200K

STATION STYLE SMD-20 MOUNTINGS Vertical-Offset Inverted 50/60-Hz Ratings Leakage Distance kV Amperes, RMS to Ground, Minimum Interr., Sym. Nom. Max BIL Max Inches mm 60 Hz 50 Hz 14.4 17.0 110 200E or 200K 14 000 11 200 15½ 394 25 27 150 200E or 200K 12 500 10 000 24 610

Right-Angle Cluster-Offset 34.5 38 200 200E or 200K 10 000 8 000 37 940

78 MEDIUM VOLTAGE 79 — 610 267 394 394 mm —provide —provide SMU-40 Fuse Unit. —designed for ½ ½ ½ 24 15 15 10 Ground, Minimum Inches Leakage Distance to Guide horns Guide self-guiding action for the fuse unit during closing Stainless steel silencer steel Stainless effectively controls exhaust to eliminate noise and reaction forces Pull-ring reliable operation with the Loadbuster tool or hookstick Optional attachment hooks for use with Loadbuster—The S&C Loadbreak Tool 60 Hz 50 Hz 20 00020 000 16 25 00025 000 20 25 00025 000 20 Interrupting, Sym. Interrupting, Amperes, RMS Max 400E 400E 400E 95 BIL 50/60-Hz Ratings 110 150

STATION—VERTICAL STYLE SMD-40 MOUNTINGS STATION—VERTICAL 5.5 29 kV 17.0

Max 4.8 25 14.4

Nom. is available in a with Cypoxy™ or porcelain

— —also ™ station- —ensures latch release —guides fuse Cast red brass hinge unit during closing S&C Cypoxy with porcelainavailable station-post insulators post insulatorspost Rugged galvanized formed- galvanized Rugged base channel steel Silver-to-silver throughoutcontacts backed by pre-stressed springs loading for dropout action only when fuse unit operates; unaffected by shock or vibration Latch and upper-contact assembly Available with choice of connectors Similar to SMD-20 Cluster Station-Style Mounting (see page the SMD-40 78), Mounting cluster-style configuration station post insulators. Station—Vertical-Style SMD-40 Mountings Station—Vertical-Style LOADBUSTER DISCONNECT ® SWITCH

Loadbuster Disconnect Switches are double-duty devices. Loadbuster tool switching helps keep service interruptions They’re unexcelled as straight disconnects and, when used to a minimum. There’s no need for complex dead-switching with Loadbuster® —The S&C Loadbreak Tool, are the ultimate procedures. Loadbuster Disconnect Switches make every devices for low-cost, universal live switching. Loadbuster disconnect a sectionalizing point, minimizing the length of Disconnect Switches are available in voltage ratings from planned outages and the number of customers involved. 14.4 through 34.5 kV, with continuous current ratings of 630 And Loadbuster Disconnect Switch operation is simple and and 900 amperes and a momentary rating of 40,000 amperes. positive—there’s no external arc and no contact burning. All models, except those in the overhead pole-top style, are available with a choice of Cypoxy™ or porcelain insulators. LOADBUSTER DISCONNECT SWITCHES— Branch Feeder, Main Feeder, Crossarm, and Station Styles Overhead pole top-style models are available with a porcelain 50/60-Hz Ratings or polymer insulator. Disconnect kV Amperes, RMS Gap AS A STRAIGHT DISCONNECT Peak Nom. Max BIL Cont. Inches mm Loadbuster Disconnect Switches, in branch-feeder, main- Withstand feeder, and crossarm styles, are specifically designed to 8 203 meet the high-performance requirements of today’s outdoor 630 65,000 10⅞ 276 distribution systems. With their rugged station-type 14.4 15.5 110 10 254 reliability, they accommodate the prevailing heavier loads 7½ 191 900 65,000 and higher fault currents. Through excellence of concept 10 254 and construction, Loadbuster Disconnect Switches have 630 65,000 10⅞ 276 25 27 125 stepped up the standard for hookstick-operated 900 65,000 10½ 267 distribution-type disconnects. 630 65,000 10 254 25/34.5 38 150 900 65,000 14 356 The high momentary ratings of Loadbuster Disconnect 150 900 65,000 14 356 Switches are made possible by the silver-to-silver contacts 34.5 38 200 900 65,000 14 356 at the attachment-hook end. Contacts won’t weld, burn, or pit on overcurrents. Loadbuster Disconnect Switches LOADBUSTER DISCONNECT SWITCHES— will carry rated load, opening and closing without Overhead Pole -Top Style

difficulty, even after long exposure of contacts to 50/60-Hz Ratings Disconnect atmospheric contamination. kV Amperes, RMS Gap Peak Nom. Max BIL Cont. Inches mm Loadbuster Disconnect Switches feature double-member, Withstand

hard-drawn, round-edged copper blades, formed for extra 14.4 15.5 110 630/900■ 65,000 8 203 rigidity to ensure positive engagement with the stationary 25 27 150 630/900■ 65,000 11 279 tongue contact when closing, even when closed from 34.5 38 170p 630/900■ 65,000 11 279 the side. p S&C’s tested value for a disconnect with a porcelain insulator. The IEEE rating for a AS A LOW-COST LOAD SWITCHING DEVICE disconnect with a porcelain insulator is 150 kV. The IEEE rating and S&C tested value for a disconnect with a polymer insulator is 150 kV. Loadbuster Disconnect Switches, when used with the ■ S&C rating for ambient temperature through 40°C (104°F), with a minimum Loadbuster tool, provide the ultimate in distribution live- wind velocity of 1.4 mph. The IEEE rating for this disconnect switch is 630 amperes switching versatility, economy, and universality. Loadbuster continuous. Disconnect Switches give you the operating flexibility of a system with multipoint interrupter switches, but without the The Rural Utilities Service has accepted S&C Loadbuster Disconnect cost associated with having an interrupting unit built into Switches in all feeder- and station-style models. every switch.

Together, Loadbuster Disconnect Switches and the Loadbuster tool not only switch load currents through 900 amperes at distribution voltages through 34.5 kV, they also break associated transformer-magnetizing currents, line-charging currents, and cable-charging currents. And they switch single capacitor banks typically found on distribution systems.

80 MEDIUM VOLTAGE 81 — — —base has throughout —ensures against —accommodate —available with carriage- Optional backup member backup Optional suitable for single- or double- or single- for suitable crossarm mounting; furnished with either two or four mounting bolts, flat washers, lockwashers, and nuts Husky, galvanized formed base bolt slots or (shown) smooth slots accommodating machine won’t construction rigid bolts; distort when bolted down (Five- width contributes inch (127-mm) to overall stability of disconnect. Large flanged gouge won’t area crossarms.) Dead-ending option holes in each end for attachment dead-ending bracket of Tinned terminal pads terminal Tinned a wide selection of connectors workable with hot-line tools backed up by stainless steel loading springs Silver-to-silver contactsSilver-to-silver Two-bolt insulator mounting insulator Two-bolt slipping or turning of live parts, particularly when closing the blade from the side

—ideal for pole- for —ideal Overhead Pole Top-Style Disconnect Loadbuster Switches applications; available dip withbirdproof-design a porcelain insulator or— ratings throughin 25 kV—a lighter, more-rugged composite-silicone polymer insulator, as shown —also The S&C — Tool —

operate freely freely operate Attachment hooks for hooks for Attachment Loadbuster Loadbreak serve as blade guide Positive latch and pryout from all angles For more information on Loadbuster Disconnect Switches, see publications at sandc.com. and 821-31 821-30 Double-member, hard-drawn, hard-drawn, Double-member, round-edged blades copper extraformed for rigidity. —factory-set —Cypoxy is S&C’s nontracking, self-scouring, self-scouring, nontracking, nonweathering cycloaliphatic epoxy resin system; there’s never a compromise of insulation integrity with these field-proven insulators distribution-type(Porcelain insulators are also offered.) Superior insulation insulation Superior characteristics Cypoxy™ with Insulators for 160-degree opening, can field-repositioned readily be to provide 90-degree opening Blade stop pin stop Blade are available in two-insulator in available are Disconnect Switches Loadbuster branch-feeder main-feeder, crossarm, (pictured and above), station styles, and 900 630 amperes continuous, 34.5 to kV nominal. LOADBUSTER®—THE S C LOADBREAK TOOL

A BETTER WAY OF SWITCHING FOOLPROOF OPERATION Loadbuster—The S&C Loadbreak Tool is the original Operation is simple and positive. The Loadbuster tool’s lightweight, easy-to-use loadbreak tool for use with anchor is simply hung on the attachment hook of the disconnects, cutouts, and power fuses. It brings load- disconnect, cutout, or power fuse. The pull-ring is then switching capability through 34.5 kV and 630 amperes engaged with the tool’s pull-ring hook, held fast by the pull- nominal, 900 amperes maximum, to a wide variety of ring latch. A firm, steady downward pull opens the switching devices on your distribution system. device and trips the Loadbuster tool, interrupting the circuit; there’s no external arc, no contact burning. The Loadbuster GREATER FLEXIBILITY AT LOWER COST tool can be instantly reset for the next operation. Having an arc-interrupting device built into every disconnect, cutout, and power fuse on your distribution There are no “booby trap” arc chutes and auxiliary blades system is needlessly expensive. The Loadbuster tool brings on Loadbuster tool-operable switching devices to concern the interrupter to the disconnect, cutout, or power fuse operating personnel, nor “gingerbread” mechanisms to whenever load-switching capability is needed—but only challenge them. when needed. Costs are limited to one Loadbuster tool for The Loadbuster tool can handle 1,500 to 2,000 operations each line truck. An acceptable minimal cost is spread across between inspections. Just a minimum of attention keeps your entire system. it in top-notch condition. And with the Loadbuster tool’s POWER CONSUMERS BENEFIT operation counter, monitoring use is easy. Loadbuster switching helps keep service interruptions to UNIVERSALITY a minimum. There’s no need for complex switching Not only can the Loadbuster tool switch load currents up procedures involving opening and reclosing of line and through 630 amperes nominal, 900 amperes maximum, feeder breakers to permit dead switching. There’s no need at distribution system voltages up through 34.5 kV, it for one or more line crews to travel and retravel miles of can break the associated transformer-magnetizing, line- system. Every disconnect, cutout, and power fuse becomes a charging, and cable-charging currents. And it can switch sectionalizing point. Live switching can be done at the point single capacitor banks typically found on distribution that minimizes the length of the planned outage and that systems within its voltage rating. affects the fewest consumers.

Operation counter—lets you make informed decisions regarding inspection and maintenance

Optional carrying case—double-wall, high-density polyethylene construction; provides extraordinary protection for the Loadbuster tool

82 MEDIUM VOLTAGE 83 II Cutout- II

® Fuse Limiters, Fuse TripSaver

® simplicity illustrated is XS here Cutout with a Type t t he Loadbuster tool’s anchor from he Loadbuster tool’s anchor tothe t he Loadbuster tool toits maximum REMOVE the attachment hook and use a “roll-off” movement to disengage from the pull-ring of the switching device. TheLoadbuster tool is easily reset for the next operation. opening PULL ATTACH attachment hook on the far side of the cutout or disconnect. Then, engage the pull-ring with the tool’s pull-ring hook. The Loadbuster tool’s pull-ring latch disengagement. inadvertent prevents extended length—opening the switching device in the normal manner and breaking the circuit positively. is quickly is learned. Its one-two-three For more information on Loadbuster—The S&C Loadbreak at sandc.com. Tool, see publications and 811-31 811-30 1 3 2 Switch. The sameprocedure applies Tamer with Fault

® Mounted Reclosers, and power fuses. Switching with the Loadbuster tool Loadbuster the with Switching and a Loadbuster Disconnect Loadbuster a and REGULATOR BYPASS SWITCHES RECLOSER BYPASS DISCONNECTS

Regulator Bypass Switches are used to bypass and isolate Special attention has been given to the operation and voltage regulators for maintenance. Recloser Bypass alignment of the disconnect blade through the use of Disconnects are used in combination with separately stainless steel hardware and rigid anchoring of the disconnect mounted Loadbuster Disconnect® Switches to bypass and blade to the interrupter blade. Ease of operation is ensured isolate automatic circuit reclosers for maintenance. Both by floating contact alignment and a carefully positioned and station-type devices are suitable for other applications, such proportioned pull ring. as bypassing and isolating current transformers. Type NL Regulator Bypass Switches perform the same Regulator Bypass Switches and Recloser Bypass Disconnects functions as Type XL switches, but the sequence of operation offer the exceptionally sturdy construction features needed is done by the operator. Type NL switches are used in to ensure years of reliable, easy operation: applications where a 1200-ampere rating is needed or where uu All blades are of double-member, hard-drawn it is desired to bypass the voltage regulator with its shunt copper construction. winding energized (bypass blade closed, disconnect blade uu Silver-to-silver contacts are used at all current- open) so mechanical and electrical testing can be carried out. transfer points. The surface structure of the stationary To isolate the regulator, the operator first closes the bypass contacts differs from that of the blade contacts, blade to prevent interruption of service. Then, the disconnect preventing sticking, galling, or seizing. Contacts won’t blade is opened to open the regulator series-winding circuit. weld, burn, or pit on overcurrents. Finally, the interrupter blade is opened; shunt-winding uu Stainless steel or beryllium-copper loading springs magnetizing current is interrupted within the interrupter, behind the contact areas of the blades. These springs and the regulator is isolated from the line. The procedure is keep the contacts under constant pressure and provide reversed to place the regulator back into service. smooth, positive wiping action during opening and closing. This feature is especially important for Regulator Recloser Bypass Disconnects, rated up through Bypass Switches because the bypass blade is normally in 900 amperes, consist of a fuse—a Type SMD-20, Type the Open position. The bypass blade must carry full load SMD-40, or Type SM-5 Power Fuse, or a Type XS Fuse current after the contacts have endured long periods of Cutout (depending on the available fault and continuous exposure to the elements. current levels of the application)—in series with an integral Loadbuster Disconnect Switches. The fuse is inserted into Regulator Bypass Switches and Recloser Bypass Disconnects the device to protect the circuit while the recloser is out of are offered with a choice of Cypoxy™ Insulators or porcelain service. The readily accessible trunnion pocket of the rugged station-post insulators. Cypoxy station-post insulators are cast bronze hinge makes inserting the fuse easy. Guiding nontracking, self-scouring, and nonweathering, and they surfaces on the inner surface of the hinge ensure “on-center” meet or exceed the electrical and mechanical-strength approach of the fuse to the upper live parts during closing. requirements established in ANSI Standard C29.9 (1983) for And a carefully positioned and proportioned brass porcelain station-post insulators. pull-ring makes opening with a conventional hookstick a simple operation. Type XL Regulator Bypass Switches, rated 600 amperes, provide built-in mechanical interlocking, sequencing, Recloser Bypass Disconnects are alternately available with a and synchronization. Only a single pull of a hookstick is second Loadbuster Disconnect Switch (in place of the fuse) for required to isolate the regulator. The bypass blade closes applications where devices other than protective equipment first, bypassing the regulator to prevent interruption of are being bypassed for maintenance or inspection. service. Then, the disconnect blade opens the regulator series-winding circuit. Finally, the interrupter blade opens; Type XL Regulator Bypass Switches and Recloser Bypass Disconnects interruption of shunt-winding magnetizing current takes are Rural Utilities Service accepted. place within the no-external-arc interrupter, and the regulator is isolated from the line. This switching sequence is reversed automatically during the closing stroke, putting the voltage regulator back into operation without interrupting service.

84 MEDIUM VOLTAGE

85

l l l l SM-5 SM-5 SMD-20 SMD-20 SMD-20 SMD-40 SMD-40 Fuse Type Interrupter XS Fuse Cutout XS Fuse Cutout Load terminal Load 80 XS Fuse Cutout 80 XS Fuse Cutout Interrupter blade Interrupter 240 240 000 4 4 5 6 5 6 8 11 200

27 200

10 000 10

n n 00 00 100 100 Mom., Asym. Mom., Interr., Sym. Interr., 7 7 5 3 5 3 60 Hz 50 Hz Fuse 12 500

14 000 14

10 000 10 20 00020 000 16 20 00020 000 16 25 00025 000 20 34 000 34 Amperes, RMS l l —————— ——— ——— 100 100 200 200 Max 300E 400E 400E 400E 200K 200K 200K Cont. 200E or 200E or 200E or Amperes, RMS n n Asym. Mom., 40 000 40 40 000 40 40 000 40 40 000 40 40 000 40 000 40 BIL 110 150 Switch 50/60-Hz Ratings 50/60-Hz Ratings RECLOSER BYPASS DISCONNECTS BYPASS RECLOSER 600 600 600 900 900 900 Cont.  27 kV BIL 17.0 110 110 150 200 Max REGULATOR BYPASS SWITCHES BYPASS REGULATOR 125 15 27 38 kV 15.5 Max 25 14.4 Nom. Furnished with a second S&C Loadbuster Disconnect Switch in place of the fuse. Three-second rating is 25,000 amperes, RMS, symmetrical. When furnished with Cypoxy™ Insulators, meets requirements for 150-kV 25 600 amperes for XL, Type amperes 1200 for NL. Type Source terminal Source blade Bypass Disconnect blade Voltage-regulator terminals 14.4 34.5

Nom. Type NL RegulatorNL BypassType Switch l n  l BIL ratings. n 30,000 amperes for amperes XL, Type 61,00 for NL. Type For more information on Regulator Bypass Switches, see publications and 841-31. 841-30 Interrupter Fuse Unit Fuse Bypass blade Bypass

® Load terminal Load Source terminal Source Disconnect bladeDisconnect Interrupter blade Interrupter Load terminal Voltage-regulator terminal Bypass For more information on Recloser Bypass Disconnects, see publications and All 842-700. of these 842-30, 842-31, publications are available at sandc.com. Recloser terminal Fuse hinge Fuse Disconnect blade Load terminal Load SMU-20 Fuse Unit Source terminal Source Recloser Recloser terminals Source terminal Source Recloser Bypass Disconnect with Type SMU-20 BypassRecloser Disconnect Type with Recloser Bypass Disconnect—Type RA Disconnect—Type Bypass Recloser Type XL Regulator BypassType Switch OMNI-RUPTER ® SWITCHES ALDUTI-RUPTER ® SWITCHES

S&C Omni-Rupter and Alduti-Rupter Switches provide Power operation is possible with the addition of an S&C no-external-arc circuit interruption for overhead distribution 6801M Automatic Switch Operator (see page 87). Hookstick- feeders and outdoor distribution substations. They’re operated models are available, too, in upright, vertical, tiered- specially designed for these live-switching duties: outboard, and inverted mounting configurations, providing uu Line switching—Load splitting (parallel or loop the ultimate solution for simple, quick, and cost-effective switching), load dropping, and associated installation. charging currents Integer-style Alduti-Rupter Switches are also available for uu Transformer switching—Load currents and switching overhead distribution feeders at system voltages associated magnetizing currents through 46 kV and 1200 amperes continuous. They can be uu Cable switching—Load splitting (parallel or loop power operated through the addition of an S&C Type AS-1A, switching), load dropping, and associated AS-10, LS-2, or 6801M switch operator, as appropriate. charging currents OUTDOOR DISTRIBUTION SUBSTATIONS OVERHEAD DISTRIBUTION FEEDERS The economics of power distribution have forced heavier S&C’s switches provide the utmost flexibility in distribution loading of substation transformers through the addition of system switching. Lines may be readily extended and new feeders and increased loading of existing ones. S&C’s additional load accommodated because Omni-Rupter and Alduti-Rupter Switch is the ideal switching device for these Alduti-Rupter Switches can handle heavier-duty loads— heavier duties; it can split load and drop lines or cables, typically up through the emergency overload rating of the or even the entire load. Its no-external-arc interrupting line conductor. performance is essential in substations, where close phase spacings rule out the use of arc-producing disconnects. S&C switches can drop or split the entire connected load without complicated breaker-and-switch sequencing. There’s S&C Alduti-Rupter Switches are available in voltage ratings no need to drop individual loads as a preliminary operation. through 69 kV, in six rugged three-pole group-operated styles. They’re offered in ratings of 600 amperes and 1200 Increasingly greater load densities have resulted in more amperes, continuous and interrupting. For applications where load per mile of line, and more interconnections, laterals, and simultaneous three-phase switching isn’t needed, single-pole branches. Interrupter switches provide more sectionalizing Alduti-Rupter Switches are an excellent alternative; they’re points to simplify switching procedures, curtail the scope of conveniently operated with a conventional hookstick. outages, and facilitate post-outage cold-load pickup. NO-EXTERNAL-ARC INTERRUPTION Omni-Rupter Switches are tailored for overhead-line Every S&C Alduti-Rupter and Omni-Rupter Switch switching through 29 kV. These 900-ampere switches are incorporates built-in interrupters; there’s no need to rig offered in the integer style, with all three switch poles S&C switches with “add-ons.” Operation is simple and preassembled on a one-piece steel or insulated base, factory- straightforward. Interrupter contacts separate at high speed. assembled and factory-adjusted, and all necessary clearances The contacts and blade are synchronized to coordinate are built in. A variety of mounting configurations are dynamic internal dielectric strength with the interrupter’s available, tailored to the most popular overhead-distribution external striking distance, eliminating any chance of line designs. flashover. Arc-extinguishing deionizing gases are quietly Omni-Rupter Switches bring unsurpassed live-switching vented through a labyrinthine muffler. There’s no oil, no performance to overhead distribution feeders. They vacuum, and no maintenance. offer a two-time duty-cycle fault-closing capability of 42,000 EXHAUSTIVELY TESTED, UTILITY PROVEN amperes, peak, and a 10-time duty-cycle fault-closing Every S&C switch rating is based on full-scale testing: load capability of 21,000 amperes, peak—plus ice-breaking splitting, load dropping, line and cable switching—all capability on opening and closing and substantial emergency at maximum voltages and rated currents, and with test overload capabilities. Omni-Rupter Switches are shipped as a circuits tuned to duplicate the most severe transient single package. They are easy to hoist using the single-point recovery voltages likely to be encountered in service. Rated lifting bracket, and they mount quickly and easily using two performance is ensured for all live-switching duties. The through-bolts—no pole bands are required. With the simple validity of S&C’s testing has been confirmed by more than addition of the vertical operating mechanism and handle, 60 years of reliable operation of S&C switches on utility installation is complete. systems worldwide. 86 MEDIUM VOLTAGE 87

Alduti-Rupter Switch—Three-Pole Side-Break Heavy-Duty Configuration Mounting Vertical Style, Omni-Rupter Switch—Inverted Mounting Configuration Mounting Switch—Inverted Omni-Rupter For more information on Alduti-Rupter Switches, and 761-80. see publications 761-31, 761-30, For more information on Omni-Rupter Switches, see publications and 765-80. 765-30, 765-31, Fault Interrupters, Fault ® PulseCloser ® For more information Switch on 6801M Operators, see Descriptive Bulletin 1045M-30. All of these publications are available at sandc.com. SG Automatic Restoration This SG Automatic unique System. ® The Service Utilities Rural a wide variety accepted has of Omni-Rupter and Alduti-Rupter styles Switch Switch and configurations. system enables multiple 6801M operators work togethersystem to enables multiple 6801M with IntelliRupter teams as 6800 and IntelliNode™ Controls, Series Switch Automatic Interface Modules. peer-to-peerUsing can communication, the quickly teams transfer load and the minimize number of customers affected use true distributed a fault intelligence; by or outage. Teams supervision processing orno central SCADA required. is The SG system worksIntelliTeam with other reclosers equipped with an IntelliNode module, can each team include too; multiple types platforms. of control The 6801M Automatic Switch Operator Switch a fully is Automatic The 6801M integrated, microprocessor-based operator combines that electromechanical components, a remote terminal unit, and a single in communications package circuitry, control for enhanced installation flexibility and reliability and reduced Operator Switch monitors Automatic the cost. The 6801M switchingentire cycle and can automatically corrective take action of a problem. the in event When the associated distribution switches or disconnects beenhave fitted with voltage and current sensing, 6801M Operators can be furnished with, or upgraded S&C’s to, IntelliTeam 6801M Automatic Switch Operator6801M OMNI-RUPTER ® SWITCHES ALDUTI-RUPTER ® SWITCHES

Omni- Rupter Switch Construction

No-external-arc interrupter— interrupter contacts and blade are synchronized to coordinate dynamic internal dielectric strength with the interrupter’s external striking distance, eliminating any chance for flashover

Stainless steel shaft and drive lever and bronze flange bearings—provide all- weather durability and performance

Single-member, square-section, heavy-gauge, galvanized-steel base—supports switch poles in permanent perfect alignment Factory-adjusted hookstick operating handle— One-piece interphase (Fiberglass-reinforced insulated features large U-shaped pull-rings for smooth operation drive—factory-adjusted base offers the same performance; through the full opening or closing stroke; it's easy to for close three-phase it’s finished with two-component operate from under the switch, at an angle, or even from switching simultaneity; it’s polyurethane enamel for superior behind the pole (Lockout tab is front and center on the nonconducting on insulated- resistance to weathering.) operating handle.) base models

A 14.4-kV Three-Pole Side-Break Integer Style Omni-Rupter Switch, with steel base, in an upright hookstick-operated mounting configuration. Other configurations include vertical, triangular, tiered-outboard, and inverted. All are factory-assembled and factory- adjusted to ensure reliable operation. The Omni-Rupter Switch features a compact, lightweight design with built-in lifting means— unsurpassed for ease and speed of installation.

S&C Cypoxy™ Insulators provide nontracking, self-scouring, nonweathering performance, so there’s never a compromise of insulation integrity. Porcelain station-post insulators and silicone insulators are also available.

88 MEDIUM VOLTAGE 89 —provides a —features —features Single-point lifting bracket permanent means of convenient lifting for hoisting and rigging Jaw contact assembly contact Jaw floating jaw contact buttons that provide even contact forces between upper and lower jaw contacts, reducing friction operation during —securely and and —securely —nickel-silver plated; factory- —pivots to minimize loading on Unique clamping system clamping Unique permanently locks pole-units to the base; dead-endingintegral brackets eliminate dead-ending provisions separate need for Copper blade with copper-tungsten copper-tungsten with blade Copper tip arcing the blade; provides greater flexibility for greater provides blade; the jumper connection aligned, no field adjustment required Articulating hinge-end terminal pad A variety of options are available, including an insulating section in the vertical shaft, dead-ending extension-link assemblies, forprovisions mounting arresters, surge wildlife protection, and greaseless graphite-impregnated contacts. OMNI-RUPTER ® SWITCHES ALDUTI-RUPTER ® SWITCHES

Alduti-Rupter Switch Construction

S&C Cypoxy™ station-post insulators—also available with porcelain station post insulators

Stationary contact—features a thermally sprayed pure silver contact surface, coined for hardness, contour, and low porosity

Spring-backed silver-nickel multifinger blade contacts— provide four independent points of contact for optimum performance and contact pressure

No-external-arc interrupter—interrupter contacts and blade are synchronized to coordinate dynamic internal dielectric strength with the interrupter’s external striking distance, eliminating any chance for flashover

Articulated-drive operating mechanism— accommodates a wide selection of mounting arrangements

Double-member, hard-drawn copper blades—formed and trussed for extra rigidity; they’re permanently aligned for trouble-free switching

Hinge contacts—feature embossed contact surfaces, nickel plated and flash coated with silver, plus a silver-clad hinge pivot; stainless steel loading spring is engineered to optimize contact pressure, operating ease, and blade stability

Corrosion-resistant zinc-nickel-chromate plated bearing—provides smooth, maintenance-free performance; bearing elements are packed in special MIL-spec grease

Formed channel base —3⁄16-inch (4.8 mm) galvanized steel; numerous mounting holes suit any structure Various optional features are available.

One pole-unit of 14.4-kV Three-Pole Side-Break Heavy-Duty Style Alduti-Rupter Switch, 600 amperes continuous. This group-operated design is offered in a variety of standard mounting arrangements, including vertical and upright, making it ideal for substation applications.

90 MEDIUM VOLTAGE 91 — —also Insulator Insulator station ™ station ore than ™ . m

.

—interrupter —permits high- —provides smooth, smooth, —provides rod available with porcelainavailable station post insulators S&C Cypoxy insulatorspost Fault-closing contacts Fault-closing copper-tungsten feature disks silver-brazed to and blade-tongue, copper carbon-block (600-ampere copper-tungsten- or switch) block (1200-ampere switch) (Current-carryingjaw contacts consist of four silver-nickel contact rivets blade-tongue; copper a on four- self-aligning, a and spring-loaded, finger, jaw.) copper silver-clad Hex-crimped, galvanized- steel-pipe shaft operating Rectangular-section, heavy- base steel galvanized gauge, Low-inertia Cypoxy operating speed operation; there are no heavy rotating or rocking insulators to accelerate or decelerate (The operating rod is designed to withstand all compressive and tensile dynamic forces. Advanced skirt generous provides configuration leakage distance . enough for contaminated contaminated for enough environments.) A corrosion-resistant brass brass corrosion-resistant A bearing guide performance maintenance-free Various optional features are available.Various Circuit interruption takes place within S&C’s S&C’s within place takes interruption Circuit interrupter, Assembly-molded Cypoxylated™ flame or externalwithout arc contacts and blade are synchronized to dielectric dynamic internal coordinate strength external distance, striking interrupter’s with flashover for chance any eliminating —formed and trussed for extra Double-member, hard-drawn copper copper hard-drawn Double-member, blades aligned permanently rigidity; they’re trouble-freefor switching — ensure efficient current transfer and velvet- and efficient transfer ensure current smooth action at the blade hinge; hinge loading springs, truss members, and spacer, equalizer bar—all of stainless steel—are engineered for optimal contact pressure, stability blade and ease, operating Four silver-nickel contact rivets on switch support blade silver-clad plus blade, One pole-unit of 34.5-kV Three-Pole Vertical-Break Style Alduti-Rupter amperes continuous. Group-operated 1200 Switch, vertical-break style switches are available kV in voltage through and 34.5 continuous ratings current of 14.4 ratings kV, of amperes.600 They’re offered amperes and 1200 vertical in and upright standard mounting arrangements. OMNI-RUPTER ® SWITCHES ALDUTI-RUPTER ® SWITCHES

OMNI-RUPTER SWITCHES 50/60-Hz Ratings Available Mounting Style kV Amperes, RMS Configurations Nom. Max BIL Cont. Peak Withstand Three-Pole Group-Operated—Factory-Assembled and Adjusted

14.4 17.0 110 900 65 000 Vertical, upright, inverted, tiered-outboard, Side-break integer 25 29 150 900 65 000 triangular

ALDUTI-RUPTER SWITCHES 50/60-Hz Ratings Available Mounting Style kV Amperes, RMS Configurations Nom. Max BIL Cont. Mom., Asym Three-Pole Group-Operated—Factory-Assembled and Adjusted 14.4 17.0 110 1200 40 000 25 27 150 1200 40 000 Side-break integer 25 /34.5 38 150 600 40 000 Vertical, upright, tiered outboard 34.5 38 200 600 40 000 34.5 38 200 1200 40 000 25 /34.5 38 150 600 40 000

25 /34.5 38 150 1200 40 000 Vertical, upright, tiered outboard, triangular, Vertical-break integer 34.5 38 200 600 40 000 pedestal, pole-top 34.5 38 200 1200 40 000 Vertical, upright, tiered outboard, Double-break integer 46 48.3 250 630 40 000 pedestal, pole-top Three-Pole Group-Operated—Field-Assembled 14.4 17.0 110 600 40 000 25 27 150 600 40 000 Side-break Vertical, upright 34.5 38 200 600 40 000 34.5 38 200 1200 40 000 14.4 17.0 110 600 40 000 14.4 17.0 110 1200 61 000 14.4 17.0 200 2400n 40 000 25 27 150 600 40 000 Vertical-break Vertical, upright 25 27 150 1200 61 000 25 /34.5 38 150 1200 40 000 34.5 38 200 600 40 000 34.5 38 200 1200 40 000

34.5 38 200 630 40 000 Vertical, upright, tiered upright, tiered outboard, Double-break 46 48.3 250 630 40 000 inverted 69 72.5 350 1200 40 000 Vertical, upright, tiered upright Single-Pole 14.4 17.0 110 600 40 000 14.4 17.0 110 1200 61 000 Single-pole Vertical, inverted 25 27 150 600 40 000 25 27 150 1200 61 000

n 1600 amperes, RMS, load interrupting. This model is specifically designed for switching the secondary of single- or double-transformer substations.  600 amperes, RMS, load interrupting. This model is specifically designed for load splitting (parallel or loop switching).

92 MEDIUM VOLTAGE 93 Double-Break Alduti-Rupter Switch, Switch, Alduti-Rupter Double-Break Mounting Vertical Switch, Alduti-Rupter Vertical-Break Mounting Vertical Side-Break Integer Omni-Rupter Switch, Switch, Omni-Rupter Integer Side-Break Mounting Upright Switch, Alduti-Rupter Integer Double-Break Mounting Pole-Top Side-Break Integer Alduti-Rupter Alduti-Rupter Integer Side-Break Tiered-OutboardSwitch, Mounting Single-Pole Alduti-Rupter Switch, Mounting Vertical Side-Break Alduti-Rupter Switch, Mounting Upright Vertical-Break Integer Alduti-Rupter Switch, Switch, Alduti-Rupter Integer Vertical-Break Mounting Pedestal Side-Break Integer Omni-Rupter Switch, Switch, Omni-Rupter Integer Side-Break Mounting Inverted SMD-1A, -2B, -2C, -3 -50 POWER FUSES

S&C’s SMD® Power Fuses provide reliable and economical such as station batteries and protective relays. Further protection for transformers and capacitor banks in outdoor benefits of a compact fuse-protection package substations. They are offered in these ratings: are low installation costs and a space-saving design that will fit on almost any structure. The dropout action of these SMD POWER FUSES power fuses provides the additional benefit of visible air- 50/60-Hz Ratings gap isolation for the transformer after fuse operation. kV Amperes, RMS Nom. Max BIL Max Interr., Sym SMD Power Fuses are designed to accommodate— 100E 6 700 not interrupt—all anticipated transformer-loading levels. 34.5 38 200 200E 17 500 This loadability, combined with fuse element 300E 33 500 nondamageability, permits close fusing for fast clearing 100E 5 000 46 48.3 250 200E 13 100 of all faults. Moreover, mechanical and thermal stresses 300E 31 500 on the transformer from secondary-side faults are 100E 3 350 200E 8 750 minimized so transformer life is extended. 69 72.5 350 300E 17 500 300E 25 000 S&C’s power fuses provide prompt, reliable operation 115 121 550 250E 10 500 without disrupting service to source-side loads. Other 138 145 650 or 750 250E 8 750 protection alternatives involving transfer-trip relaying, As with all S&C fuse designs, SMD Power Fuses have automatic grounding switches, or sacrificial switches result undergone exhaustive full-scale testing to establish their in extensive interruption of service to other loads in the event ratings and to confirm their full fault-spectrum protection of a fault at the transformer. In addition, grounding-switch capability. These fuses detect all faults—large, medium, and and sacrificial-switching schemes result in severe bolted-fault small, even down to the minimum melting current—and they stress to the system and source transformers, plus undue provide reliable circuit interruption under the most severe fault testing of line-terminal circuit breakers for all faults— transient recovery voltages that may be encountered. even low-magnitude secondary-side faults. At the heart of every SMD ® Fuse Unit is S&C’s specially CAPACITOR BANK PROTECTION designed current-responsive fusible element. It’s When applied for fusing of station capacitor banks, the exceptionally precise, with a total tolerance in melting substantial loading capability of SMD Power Fuses permits current of only 10 percent. This precision, plus a wide the use of smaller ampere ratings than may be possible selection of ampere ratings in three different speeds— with other makes of power fuses—without risking S&C Standard, Slow, and Very Slow—lets you achieve nuisance fuse operations caused by capacitor-bank inrush optimal coordination and maximum protection for both or outrush currents. Close fusing ensures rapid isolation of the source-side system and the downstream equipment. faulted capacitor banks.

The superior element design also ensures the permanence of OTHER APPLICATION CONSIDERATIONS response characteristics. SMD Fuse Units are unaffected by The exhaust of SMD Power Fuses is nonconducting, unlike aging, corrosion, vibration, or surges that heat the element the highly ionized blast of expulsion-type fuses that use nearly to the severing point. They’re nondamageable, fiber-lined fuse tubes. Consequently, it is possible to use ensuring continued integrity of carefully engineered system standard phase spacings and clearances to ground. protection and coordination plans. The operation of S&C fuses—from the sensing of current to the interruption of faults—is the essence of simplicity. TRANSFORMER PROTECTION Minimal physical maintenance is required, such as SMD Power Fuses provide a reliable, economical means to periodic checking of the condition of the fuse-unit protect small to medium-sized load transformers installed in bore and occasional refinishing of fuse tubes exposed to utility and industrial substations. The considerable economies severe weathering. There is no possibility of introducing inherent to power fuse protection are possible because the the protection vagaries commonly associated with fuse itself is much less costly than other types of protective maintenance of breakers, relays, and control-power equipment, and there is no need for auxiliary equipment batteries. S&C fuse TCCs are maintenance-free.

SMD Power Fuses are Rural Utilities Service accepted.

94 Vertical Style Mounting How It Works …

Compression-loaded silver- clad contacts—provide superb current transfer Release tube— weather-sealed

Latch and upper-contact assembly— features a “floating” roller- latch mechanism Solid arc-extinguishing that prevents materials. Fault is quickly and accidental fuse positively interrupted by high- dropout yet speed elongation of the arc releases without and by efficient deionizing and resistance cooling of the arc path with when operated turbulent nonconducting gases intentionally released

Single arcing rod of SMD Fuse Fuse unit Unit. High-fault currents are interrupted in a lower large- diameter bore section A that relieves pressure buildup, resulting in a milder exhaust. Low to moderate fault currents B are interrupted in the upper Hinge and small-diameter bore section lower-contact B where deionizing gases are assembly— effectively concentrated for arc also features extinction. compression- loaded silver-clad Fusible element. The element contacts senses an overcurrent condition A and melts. The strain wire then severs, initiating an arc and releasing the spring- Standard station post insulators—also Rugged, galvanized loaded arcing rod to effect available with silicone-housed composite steel base fault interruption; the arc is insulators or Cypoxy™ Insulators extinguished as it is drawn upward through solid materials.

Other Available Mounting Styles

SMD® FUSE UNIT RATINGS Available Ratings, Amperes for Fuse Unit Types Speed SMD-2B, SMD-1A SMD-2C, SMD-50 SMD-3 S&C 1–200E 1–300E 5E–100E Standard S&C Slow 15E–200E 15E–300E 15E–100E HIGH-VOLTAGE S&C Vertical-Offset Right-Angle Upright 50E–200E 50E–300E — Very Slow

For more information on SMD Power Fuses, see publications 212-30 and 212-31 at sandc.com. 95 CIRCUIT-SWITCHERS

CIRCUIT-SWITCHER: THE MULTIPURPOSE protection at each load-tap transformer without resorting TRANSMISSION VOLTAGE SWITCHING AND to remote tripping arrangements, such as transfer-trip PROTECTION DEVICE relaying or automatic grounding-switch or sacrificial switching schemes. S&C Circuit-Switchers are ideal for: S&C Circuit-Switchers can switch and protect all practical uu Transformer switching and protection sizes of load-tap transformers and single and back-to-back uu Capacitor-bank switching and protection shunt capacitor banks up through the following applications: uu Reactor switching and protection MAXIMUM SUITABLE CIRCUIT-SWITCHER APPLICATIONS uu Line and cable switching Transformer System Voltage, Capacitor Bank Nonforced-Cooled kV Rating, Mvar They’re suitable for frequent operation over a long period Rating, MVA of time with minimal maintenance. They can close, carry, and 34.5 15 33 interrupt fault currents as well as load currents, and they are 46 25 36 available in voltage ratings from 34.5 kV through 230 kV, with 69 40 54 continuous-current ratings of 1200, 1600, and 2000 amperes. 115 70 87 S&C Circuit-Switchers provide high-speed circuit interruption 138 90 108 of overloads and secondary faults, and they protect 161 110 126 transmission circuits from all types of transformer faults. 230 160 180 Circuit-Switcher economics make it practical to provide

138-kV Series 2000 Circuit-Switcher Model 2010 with horizontal 138-kV Mark VI Circuit-Switcher applied for capacitor-bank interrupters and a vertical-break power-operated disconnect switching and protection. Optional pre-insertion inductors applied for switching and protection of an oil-insulated shunt dramatically reduce inrush current and tame damaging reactor at a substation belonging to a large southeastern utility. overvoltages that can shut down sensitive adjustable-speed drives.

96 S&C Circuit-Switchers are offered in several versions: Series 2000 Circuit-Switchers feature interrupters designed to close the circuit, interrupt the circuit, and maintain rated Mark V Circuit-Switchers use in-series circuit-breaking dielectric strength when open. They’re available in mounting interrupters and a high-speed circuit-making and isolating configurations suiting the broad spectrum of substation disconnect. They can be custom tailored to fit any structure, layouts and profiles, with or without an integral power- phase spacing, or bus height. And they can be furnished with operated disconnect. pre-insertion inductors for unsurpassed capacitor switching. All Circuit-Switcher interrupters use no-maintenance single- Mark VI Circuit-Switchers combine the Trans-Rupter II ® pressure SF6 puffer technology for restrike-free, noncurrent- Transformer Protector’s innovative interrupter technology chopping, minimum-voltage surge performance. They’re (see pages 98 and 99) with the Mark V’s high-speed circuit- field-proven through 50 years of superior service. Isolating making and isolating disconnect. Mark VI Circuit-Switchers disconnect blades feature current-carrying contacts with can also be furnished with pre-insertion inductors—the built-in wiping action, ensuring a clean, low-resistance industry standard for reducing inrush current and transient path. Operators are designed to ensure the full inherent overvoltages when switching capacitor banks. mechanical and electrical performance characteristics of Circuit-Switchers.

A 138-kV Series 2000 Circuit-Switcher Model 2020 with vertical This 138-kV Series 2000 Circuit-Switcher Model 2030 with vertical HIGH-VOLTAGE interrupters and a side-break power-operated disconnect applied interrupters and without a disconnect supplanted an existing for transformer switching and protection. “flash-bus” sacrificial-switching scheme in this transformer switching and protection application at a large southwestern utility.

For more information on Mark V Circuit-Switchers, see publications 719-30 and 711-757. For more information on Mark VI Circuit-Switchers, see S&C publications 712-30 and 712-700. For more information on Series 2000 Circuit-Switchers, see publications 716-30 and 716-31. All of these publications are available at sandc.com. 97 TRANS-RUPTER II® TRANSFORMER PROTECTOR

The Trans-Rupter II Transformer Protector is designed SPACE-SAVING, LIGHTWEIGHT DESIGN exclusively for primary-side application on distribution WITH SUPERIOR MOUNTING FLEXIBILITY substation transformers. This revolutionary device combines Trans-Rupter II Transformer Protectors install on nearly the three-phase tripping, high interrupting ratings, and any structure—even on the transformer or source-side sophisticated protection capabilities of higher-cost circuit- disconnect switch. They are ideal for retrofit of older switchers and circuit breakers with the simple installation equipment and for mobile-transformer applications. procedures and minimal maintenance requirements of lower- A user-furnished, three-pole, group-operated disconnect cost power fuses. switch is required to provide visible air-gap isolation during CHOOSE THE VERSION THAT FITS YOUR NEEDS maintenance and to pick up transformer magnetizing inrush current. Alternately, Trans-Rupter II protectors can Model EX is tripped by an external signal provided by a user- be furnished with a space-saving integral vertical-break furnished differential, sudden-pressure, or overcurrent relay. style disconnect. Model EX is perfect for new installations and for retrofitting outdated circuit-switcher, circuit breaker, and high-speed S&C Mounting Pedestals are available, too, in a variety of grounding switch installations where protective relays and heights and phase spacings. control power are already in place. It’s available with optional motor operators that provide remote-resetting capability.

Model SE features a self-powered overcurrent-protection system activated by current transformers on the primary bushings of the transformer. Digital overcurrent relays provide complete time-overcurrent and instantaneous- overcurrent protection; they’re field-settable and include user-selectable time-current characteristics.

With Model SE, there’s no need for external relays, substation batteries, or a control house . . . you can save tens of thousands of dollars over the installed cost of a circuit-switcher or circuit breaker. Model SE is ideal for new installations as well as for Interrupter and insulating retrofitting overdutied power fuse installations. support column—features shatterproof composite-polymer NO-MAINTENANCE INTERRUPTERS, silicone insulation; the pole-unit is lightweight and easy to mount on NO-MAINTENANCE OPERATING MECHANISM nearly any structure Trans-Rupter II interrupters are factory-filled and hermetically sealed, eliminating the hassle and expense of field-filling with SF6. These electrically tripped, resettable interrupters provide 31.5-kA, 3-cycle fault- interrupting performance. There’s no mechanical linkage to adjust or maintain. The Trans-Rupter II Transformer Protector’s operating mechanisms are likewise sealed for life, protected from the environment.

SHATTERPROOF COMPOSITE-POLYMER SILICONE INSULATION Stored-energy operating mechanism—sealed for The Trans-Rupter II Transformer Protector’s interrupter life; no heater needed and insulating support column stand up to the most severe environment. The unique patented skirt arrangement on 115-kV and 138-kV pole-units provides enhanced dielectric performance. Pole units are fully assembled and factory-tested . . . just hoist them into position. Installation is quick and easy.

98 Temperature-compensated gas-pressure gauge— indicates gas pressure; provides two alarm levels

Operating shaft for charging tool

Closed-and- charged indicator

Control cabinet of Model SE includes a self-powered, self- contained package that can save thousands of dollars for substations where there's no control house.

Optional motor operator

An easy-to-use charging tool is included for closing and charging pole-units to restore service. Optional motor operators provide three-phase remote-resetting capability.

TRANS-RUPTER II TRANSFORMER PROTECTORS 50/60-Hz Ratings kV Suitable for Fault-Interrupting Transformers Rated, Amperes, RMS Nom. Max BIL MVA 69 72.5 350 31 500 30/40/50

115 123 550 31 500 37.5/50/62.5■

138 145 650 31 500 50/66.5/83■

■ Based on 8% impedance. Larger-size transformers can be accommodated at HIGH-VOLTAGE higher impedance levels. A 138-kV Trans-Rupter II Transformer Protector Model EX, shown on S&C Mounting Pedestals. Low-voltage connection enclosure provides connections for user-furnished relays and control power.

For more information on Trans-Rupter II Transformer Protector, see publications 731-30, 731-31, and 731-700 through 731-705 at sandc.com. 99 100 101 NOTES

102 103 CONNECT WITH US:

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