Medium Voltage Switchgear

Indoor Type VCP-W Metal-Clad 7.1 Introduction 7 Switchgear Assembly (5/15 kV shown) Product Selection Guide ...... V3-T7-2 7.2 Metal-Clad Vacuum Switchgear 7 Product Overview 7 Product Description ...... V3-T7-4 Application Description ...... V3-T7-4 7 Features, Benefits and Functions ...... V3-T7-5 Options and Accessories ...... V3-T7-6 7 Technical Data and Specifications ...... V3-T7-6 7 26-Inch Wide, 5 kV, 250 MVA, 1200A Switchgear Product Description ...... V3-T7-7 7 Application Description ...... V3-T7-7 Features, Benefits and Functions ...... V3-T7-7 7 Standards and Certifications ...... V3-T7-7 7 Technical Data and Specifications...... V3-T7-8 7.3 High Resistance Grounding System 7 Product Description ...... V3-T7-17 7 Application Description ...... V3-T7-17 Features, Benefits and Functions ...... V3-T7-20 7 Standards and Certifications ...... V3-T7-20 7 Catalog Number Selection ...... V3-T7-21 Technical Data and Specifications ...... V3-T7-22 7 Dimensions ...... V3-T7-25 7 7 7 7

Learn 7 Online 7 7 7 7 7 7 7 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-1 Medium Voltage Switchgear 7.1 Introduction

7 Indoor Type VCP-W Metal-Clad Switchgear Assembly (5/15 kV shown) Contents Description 7 Product Selection Guide 7 7 7 7 7 7 7 7

7 Product Selection Guide

7 Product Offering Chart—Metal-Clad 1 7 Description MVA Standard Narrow Design MVA Arc Resistant Voltage 5, 15, 27, 38 kV 5 kV 5, 15, 27, 38 kV 7 Operation duty cycle High High High Enclosure Indoor (5–38 kV) Indoor only Indoor only 7 Outdoor aisleless (5–38 kV) 7 Outdoor aisle (5–15 kV) Outdoor common aisle (5–15 kV) 7 Listed UL, CSA UL, CSA CSA only Assembly standards ANSI/IEEE, C37.04, C37.06, C37.54, ANSI/IEEE, C37.04, C37.06, C37.54, ANSI/IEEE, C37.04, C37.06, C37.54, 7 C37.20.2, C37.55, CSA 22.2 #31 2 C37.20.2, C37.55, CSA 22.2 #31 2 C37.20.2, C37.20.7, C37.55, CSA 22.2 #31 2 Circuit breaker type VCP-W VCP-W ND VCP-W 7 Circuit breaker mounted 5 kV drawout, direct roll-in breaker option Drawout 5 kV only 5 kV drawout, direct roll-in breaker option 15 kV drawout, direct roll-in breaker option 15 kV drawout, direct roll-in breaker option 7 27 kV drawout, direct roll-in breaker option 27 kV drawout, direct roll-in breaker option 7 38 kV direct roll-in breakers 38 kV direct roll-in breakers Seismically rated Zone 4 to Yes Yes Yes 7 California Building Code Title 24 BIL ratings 60 kV (5 kV) 60 kV (5 kV only) 60 kV (5 kV) 7 95 kV (15 kV) 95 kV (15 kV) 125 kV (27 kV) 125 kV (27 kV) 7 170 kV (38 kV) 170 kV (38 kV) Main bus ratings 1200, 2000, 3000, 4000A (5 kV) 1200A (5 kV only) 1200, 2000, 3000A (5 kV) 7 1200, 2000, 3000, 4000A (15 kV) 2000A, 3000A 1200, 2000, 3000A (15 kV) 7 1200, 2000A (27 kV) 1200, 2000A (27 kV) 1200, 2000, 3000A depending on kA rating (38 kV) 1200, 2000, 3000A (38 kV) 7 Notes 1 Additional products not shown include medium voltage transfer, high resistance ground and low profile switchgear. 7 2 Listings are voltage dependant. See individual product sheets for detail. 7 7

V3-T7-2 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear Introduction 7.1

Product Offering Chart—Metal-Clad, continued 1 Description MVA Standard Narrow Design MVA Arc Resistant 7 Breaker ratings 1200, 2000, 3000A (5 kV) 1200A (5 kV only) 1200, 2000, 3000A (5 kV) 7 1200, 2000, 3000A (15 kV) 1200, 2000, 3000A (15 kV) 1200, 2000A (27 kV) 1200, 2000A (27 kV) 7 1200, 1600, 2500A depending on kA rating (38 kV) 1200A (38 kV) Overcurrent protective device Yes Yes Yes 7 2 Short-circuit interrupting capacity 29, 41, 63 kA (5 kV) 29 kA (5 kV) 37 kA (5 kV) 7 33 kA (8.25 kV) — 18, 28, 37, 63 kA (15 kV) 37 kA (15 kV) 2 7 16, 22, 25, 40 kA (27 kV) 25 kA (27 kV) 2 16, 21, 25, 32, 40 kA (38 kV) 25 kA (38 kV) 2 7 40, 50, 63 kA (5 kV) 2 40, 50, 63 kA (15 kV) 2 7 25, 40 kA (27 kV) 2 7 25, 40 kA (38 kV) 2 Conduit Entry Top or bottom Top or bottom Top or bottom 7 Notes 1 Additional products not shown include medium voltage transfer, high resistance ground and low profile switchgear. 7 2 Ratings are arc ratings, not interrupting capacity. 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-3 Medium Voltage Switchgear 7.2 Metal-Clad Vacuum Switchgear

7 VCP-W Breaker Contents Description Page 7 Product Overview Features, Benefits and Functions ...... V3-T7-5 7 Options and Accessories ...... V3-T7-6 Technical Data and Specifications ...... V3-T7-6 7 26-Inch Wide, 5 kV, 250 MVA, 1200A Switchgear V3-T7-7 An Eaton 7 Green Solution 7 7 7 7 7

7 Product Overview 7 Product Description Application Description Eaton has been manufacturing To ensure reliability and Eaton’s VCP-W metal-clad 7 metal-clad switchgear for over quality, the testing of VCP-W switchgear with type VCP-W 50 years, and vacuum circuit switchgears has been vacuum breakers provides breakers for over 30 years. extensive. UL and CSA listed centralized control and 7 Tens of thousands of Eaton switchgear is available for protection of medium voltage vacuum circuit breakers, 5 and 15 kV. CSA is available power equipment and circuits 7 used in a wide variety of for 27 and 38 kV. in industrial, commercial and applications, have been utility installations involving 7 setting industry performance MVA Arc-Resistant generators, motors, feeder standards for years. Eaton has been circuits, and transmission manufacturing arc-resistant and distribution lines. 7 With reliability as a metal-clad switchgear since fundamental goal, Eaton’s VCP-W switchgear is 1990. We now offer Type 2 7 engineers have simplified the available in maximum voltage and 2B arc-resistant VCP-W switchgear design to ratings from 4.76 kV through switchgear assemblies, minimize problems and gain 38 kV, and interrupting ratings 7 designed and tested in trouble-free performance. as shown on Page V3-T7-10. accordance with the IEEE Special attention was given to VCP-W offers a total design C37.20.7 with VCP-W 7 material quality and concept of cell, breaker and drawout vacuum circuit maximum possible use auxiliary equipment, which breakers. The NEC calls for 7 was made of components can be assembled in various an arc flash boundary of zero proven over the years in combinations to satisfy user around medium voltage Eaton switchgear. application requirements. 7 switchgear if it has been Two-high breaker successfully certified as arc- Maintenance requirements arrangements are standard 7 resistant switchgear per IEEE are minimized by the use up to 15 kV. One-high C37.20.7. Eaton’s switchgear of enclosed long-life arrangements can be is available in Type 2B; arc 7 vacuum interrupters. When furnished when required. maintenance or inspection flash boundaries are 7 is required, the component eliminated even when the arrangements and drawers control compartment doors allow easy access. The are open (for Eaton 7 VCP-W’s light weight switchgear, this includes the simplifies handling and control compartment door in 7 relocation of the breakers. front of the circuit breaker). Eaton offers a wide variety of 7 The VCP-W meets or tested switchgear exceeds all applicable ANSI, configurations and bus 7 NEMA® and IEEE design transitions certified by UL to standards, and additionally protect personnel from arcing offers many outstanding faults of up to 63,000A rms 7 safety features. for a duration of 0.5 seconds.

V3-T7-4 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear Metal-Clad Vacuum Switchgear 7.2

Features, Benefits and Functions 7 Endurance Front Accessible Mechanism High power laboratory tests Front accessible mechanism 7 prove VCP-W breakers are is standard on all VCP-W capable of 50 to 200 full fault breakers. 7 current interruptions. Front Accessible CTs (5–38 kV) 7 Vacuum Interrupter, Up to 12 CTs per breaker can Current Transfer Conductor be mounted for easy access. Eaton’s stiff-flexible design 7 eliminates sliding/rolling Drawout Auxiliary contacts in the main Compartments 7 conductor, which provides Up to four drawers per excellent electrical and vertical section can be 7 thermal transfer, and long equipped with CPTs or VTs vacuum interrupter life. up to 15 kV. Primary isolation 7 shutters are standard. Grounded Steel Safety Shutters Prevents accidental contact Fluidized Bed Epoxy 7 with live primary voltage Bus Insulation connections when breaker Excellent track resistant and 7 is withdrawn. flame retardant properties. 7 Breaker Rails Standardized On 5–27 kV units, the breaker Functional Designs 7 can be withdrawn on rails for Shortens order cycle time. inspection and maintenance without the need for a Protective Relays 7 separate lifting device. Eaton’s E-Series microprocessor-based 7 Direct Roll-In Beakers protective relays offer 5–38 kV switchgear is reliable, secure and complete 7 available with direct roll-in protection and control of breakers. Direct roll-in power generation and 7 breakers can be supplied distribution systems. The in two-high configurations hardware and software with fully interchangeable commonality across the E- 7 breakers. Rails or a special Series family platform makes direct roll-in lift pan can it easy for users to program 7 be used if desired to simple to complex settings or withdraw upper breakers schemes for each of their 7 for inspection. unique applications. The powerful multi-core 7 Reduced Breaker Maintenance processors and intuitive user Vacuum interrupter requires interface provide for flexible 7 only periodic check for configurations and simple contact erosion. Integral wear alarming and notifications. indicator provided. No contact Please refer to Volume 3, Tab 9 7 adjustments are required. or www.eaton.com/pr for additional information. 7 7 7 7 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-5 Medium Voltage Switchgear 7.2 Metal-Clad Vacuum Switchgear

Options and Accessories Technical Data 7 and Specifications Supplemental Devices Ground and Test Device Standard Accessories ● Maximum voltages: 7 ● The ground and test device is One test jumper ● 4.76 kV, 8.25 kV, 15 kV, a drawout element that may ● One levering crank 27 kV, 38 kV be inserted into a metal-clad 7 ● One maintenance tool switchgear housing in place ● Interrupting ratings: ● One lifting yoke (5–38 kV) of a circuit breaker to provide ● 4.76 kV: 7 ● access to the primary circuits Two sets of rails (5–27 kV) 250 MVA (29 kA) to permit the temporary ● One turning handle 350 MVA (41 kA) 7 connection of grounds or (5th wheel, 38 kV) 500 MVA (63 kA) testing equipment to the ● 8.25 kV: 7 high voltage circuits. High Optional Accessories 500 MVA (33 kA) potential testing of cable or ● One transport dolly ● 15 kV: 7 phase checking of circuits (5–27 kV) are typical tests that may be 500 MVA (18 kA) ● One portable lifter 750 MVA (28 kA) performed. The devices are (5–27 kV) 7 insulated to suit the voltage 1000 MVA (37 kA) ● One test cabinet 1500 MVA (63 kA) World-Class VCP-W Vacuum Circuit rating of the switchgear and 7 Breakers are Designed with a V-Flex will carry required levels of ● One electrical levering ● 27 kV: Nonsliding Current Transfer System short-circuit current. device (5–27 kV) 16 kA, 22 kA, 7 ● One ramp for lower 25 kA, 40 kA Before using ground and test breaker (5–27 kV) ● 38 kV: devices, it is recommended ● 16 kA, 25 kA, 7 that each user develop One manual or electrical ground and test device. 31.5 kA, 40 kA detailed operating procedures 2300 MVA (35 kA) 7 consistent with safe Electrical ground up to 15 kV only operating practices. Only ● Continuous current: 7 qualified personnel should ● One hi-pot tester circuit breakers be authorized to use ground ● One offset manual ● 1200A, 2000A, 3000A 7 and test devices. racking device (5 and 15 kV) Manual and electrical ground ● 4000A forced cooled 7 and test devices are available. (5 and 15 kV) These devices include six ● 1200A, 2000A, (27 kV) 7 studs for connection to ● 600A, 1200A, 1600A, primary circuits. On the 200A, 2500A (38 kV) manual device, selection and ● 3000A forced cooled 7 grounding is accomplished (38 kV) by cable connection. On 7 the electrical-type device, ● Continuous current: grounding is accomplished main bus 7 by an electrically operated ● 1200A, 2000A, 3000A, grounding switch. 4000A (5 and 15 kV) 7 ● 1200A, 2000A, (27 kV) ● 1200A, 2000A, 2500A, 7 3000A (38 kV) 7 7 7 7 7 7 7 7 7

V3-T7-6 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear Metal-Clad Vacuum Switchgear 7.2

Typical Indoor Assembly with a Breaker Withdrawn on Rails Contents 7 Description Page Product Overview ...... V3-T7-4 7 26-Inch Wide, 5 kV, 250 MVA, 1200A Switchgear Technical Data and Specifications ...... V3-T7-8 7 7 7 7 7 7 7 7

26-Inch Wide, 5 kV, 250 MVA, 1200A Switchgear 7 Product Description Features, Benefits Standards and Certifications 7 26-inch wide VCP-W and Functions At the heart of the new switchgear was designed for Functionality is the name For installations requiring switchgear line is Eaton’s 7 use in instances where floor of the game. Available 2000A main breakers with world-class VCPW-ND space requirements would configurations include 1200A feeders, lineups can be “Narrow Design” vacuum 7 not allow the industry breaker over breaker, built with standard 36-inch circuit breaker. The 26-inch standard 36-inch (914.4 mm) one or two auxiliaries over (914.4 mm) wide main breaker (660.4 mm) wide offering wide switchgear. breaker, breaker over one cubicles and 26-inch (660.4 includes breakers and gear 7 or two auxiliaries, or up mm) wide feeders. that are rated for use on 5 kV, Application Description to four auxiliaries in one The main bus connections 250 MVA, 1200A, 60 kV BIL 7 Typical applications include vertical section. are 100% compatible with maximum systems. Main not only new construction, standard 36-inch (914.4 mm) bus ratings of up to 2000A 7 but also replacement In addition to the tremendous wide vertical sections. As a are available. switchgear for installations floor space saving offered by result, add-ons to existing The 26-inch (660.4 mm) wide previously equipped with the 26-inch (660.4 mm) wide installations can be simply and 7 VCP-W switchgear meets or 26-inch (660.4 mm) wide design, a savings in the rapidly performed without exceeds ANSI, NEMA and airbreak devices. This new height of the switchgear is costly system modifications 7 IEEE design standards. UL line of switchgear has also also available. Where height and transition sections. proven very popular is an issue, such as an and CSA listed switchgear is 7 among Generator Control outdoor powerhouse or in a also available. manufacturers where 5 kV, mobile power container, the 7 250 MVA, 1200A applications standard 95-inch (2413 mm) are commonplace. height can be reduced to an 80-inch (2032 mm) tall model 7 with a single-high breaker with one auxiliary and/or 7 control cubical. In addition, the low-profile structure is designed to accommodate 7 Voltage Transformers that are front mounted. Shallow- 7 depth versions are also available for applications 7 where depth is an issue. Contact your local Eaton 7 representative for more information on special dimensional requirements. 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-7 Medium Voltage Switchgear 7.2 Metal-Clad Vacuum Switchgear

7 Technical Data and Specifications 7 Available Type VCP-W Vacuum Circuit Breakers Rated on Symmetrical Current Basis, Per ANSI Standards (Rated K=1) Drawout Circuit Breaker Type 50 VCP-W 50 VCP-W 50 VCP-W 50 VCP-W 75 VCP-W 7 Rated Values 25 40 50 63 40 7 Maximum voltage (V) (kV rms) 4.76 4.76 4.76 4.76 8.25 Power frequency (Hz) 1 60 60 60 60 60 7 Insulation level Power frequency withstand voltage (1 min.) (kV rms) 19 19 19 19 36 7 Lightning impulse withstand voltage (1.2 x 50 ms) (kV peak)6060606095 Continuous current (A rms) 2 1200 1200 1200 1200 1200 2000 2000 2000 2000 2000 7 3000 3000 3000 3000 3000 Short-circuit ratings (reference C37.04-1999 and C37.06-2009 7 except as noted 3) Symmetrical interrupting circuit (l) (kA rms sym) 4 25 40 50 63 40 7 DC component (%DC) (%) 5 50 50 44 55 50 6 Asymmetrical interrupting current (lt) (kA rms asym total) 31 49 59 80 49 7 Closing and latching current (2.6 x l) (kA peak) 65 104 130 164 104 7 Short-time withstand current (rms) 7 25 40 50 63 40 Transient recovery voltage parameters are based on TD-4 7 Peak voltage (E2) = (uc) (kV peak) 8.2 8.2 8.2 8.2 14 Time to peak (T2 = t3 x 1.137) (msec) 50 50 50 50 59 7 TRV rise time (t3) (msec) 44 44 44 44 52 8 RRRV = uc/t3 (kV/msec) 0.19 0.19 0.19 0.19 0.27 7 Interrupting time (ms, cycles (60 Hz)) 50, 3 50, 3 50, 3 50, 3 50, 3 Operating duty (duty cycle) O-0.3s-CO-3m-CO O-0.3s-CO-3m-CO O-0.3s-CO-3m-CO O-0.3s-CO-3m-CO O-0.3s-CO-3m-CO 7 Mechanical endurance (no-load operations) 9j 10,000 10,000 10,000 10,000 10,000 Capacitance current switching capability 7 (reference C47.04a-2003, C37.06-2009 and C37.09a-2005) Cable-charging current (class, A rms) C2, 3–10 C2, 3–10 C2, 3–10 C2, 7.5–25 C2, 7.5–25 7 Isolated shunt capacitor bank current (class, A rms) C2, 75–630 C2, 75–630 C2, 75–630 C2, 75–630 C2, 75–630 75–1000 75–1000 75–1000 75–1000 75–1000 7 75–1600 75–1600 75–1600 75–1600 75–1600 Back-to-back capacitor switching 7 Capacitor bank current (class, A rms) C2, 75–630 C2, 75–630 C2, 75–630 C2, 75–630 C2, 75–630 75–1000 75–1000 75–1000 75–1000 75–1000 7 75–1600 75–1600 75–1600 75–1600 75–1600 Inrush current (kA peak)66666 7 Inrush frequency (kHz) 0.8 0.8 0.8 0.8 0.8 0.5 0.5 0.5 0.5 0.5 7 0.3 0.3 0.3 0.3 0.3 Out-of-phase switching Voltage = 1.44 x V (kV rms) 777712 7 Current = 0.25 x l (kA rms) 6.3 10 12.5 15.8 10

Notes 7 1 6 All circuit breakers are tested at 60 Hz, however, they can also be applied at 50 Hz with no The asymmetrical interrupting current, I total, is given by (It) = I x Sqrt (1 + 2 x %DC x %DC) kA de-rating. rms asym total. 7 2 4000A fan cooled rating is available for 3000A circuit breakers. 7 Duration of short-time current and maximum permissible tripping delay are both two seconds 3 These circuit breakers were tested to the preferred TRV ratings specified in C37.06-2000. for all circuit breakers listed in this table, as required in C37.04-1999, C37.06-2000 and 4 Because the voltage range factor K=1, the short-time withstand current and the maximum C37.06-2009. 7 8 symmetrical interrupting current are equal to the rated symmetrical interrupting current. RRRV can also be calculated as = 1.137 x E2/T2. 9 5 Based on the standard DC TIME constant of 45 ms (corresponding to X/R of 17 for 60 Hz) and Each operation consists of one closing plus one opening. 7 the minimum contact parting time as determined from the minimum opening time plus the j All 40 and 50 kA circuit breakers exceed required 5000 no-load operations; all 63 kA circuit assumed minimum relay time of 1/2 cycle (8.33 ms for 60 Hz). breakers exceed the required 2000 no-load ANSI operations. 7 7 7

V3-T7-8 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear Metal-Clad Vacuum Switchgear 7.2

Available Type VCP-W Vacuum Circuit Breakers Rated on Symmetrical Current Basis, Per ANSI Standards (Rated K=1), continued Drawout Circuit Breaker Type 7 75 VCP-W 150 VCP-W 150 VCP-W 150 VCP-W 150 VCP-W Rated Values 50 25 40 50 63 7 Maximum voltage (V) (kV rms) 8.25 15 15 15 15 1 7 Power frequency (Hz) 60 60 60 60 60 Insulation level Power frequency withstand voltage (1 min.) (kV rms) 36 36 36 36 36 7 Lightning impulse withstand voltage (1.2 x 50 ms) (kV peak)9595959595 7 Continuous current (A rms) 2 1200 1200 3 1200 1200 1200 3 2000 2000 2000 2000 2000 3 3000 3000 3000 3000 3000 3 7 Short-circuit ratings (reference C37.04-1999 and C37.06-2009 except as noted 3) 7 Symmetrical interrupting circuit (l) (kA rms sym) 4 50 25 40 50 63 DC component (%DC) (%) 5 44 50 50 44 55 7 6 Asymmetrical interrupting current (lt) (kA rms asym total) 59 31 49 59 80 Closing and latching current (2.6 x l) (kA peak) 130 65 104 130 164 7 Short-time withstand current (rms) 7 50 25 40 50 63 7 Transient recovery voltage parameters are based on TD-4 3 3 Peak voltage (E2) = (uc) (kV peak) 14 28 25.7 25.7 28 25.7 7 Time to peak (T2 = t3 x 1.137) (msec) 59 75 75 75 75 7 TRV rise time (t3) (msec) 52 66 66 66 66 8 RRRV = uc/t3 (kV/msec) 0.27 0.42 0.39 0.39 0.42 0.39 7 Interrupting time (ms, cycles (60 Hz)) 50, 3 50, 3 50, 3 50, 3 50, 3 7 Operating duty (duty cycle) O-0.3s-CO-3m-CO O-0.3s-CO-3m-CO O-0.3s-CO-3m-CO O-0.3s-CO-3m-CO O-0.3s-CO-3m-CO Mechanical endurance (no-load operations) 9j 10,000 10,000 10,000 10,000 10,000 7 Capacitance current switching capability (reference C47.04a-2003, C37.06-2009 and C37.09a-2005) Cable-charging current (class, A rms) C2, 7.5–25 C2, 7.5–25 C2, 7.5–25 C2, 7.5–25 C2, 7.5–25 7 Isolated shunt capacitor bank current (class, A rms) C2, 75–630 C2, 75–630 C2, 75–630 C2, 75–630 C2, 75–630 75–1000 C2, 75–1000 C2, 75–1000 C2, 75–1000 75–1000 7 75–1600 C1, 75–1000 C1, 75–1600 C1, 75–1600 75–1600 Back-to-back capacitor switching 7 Capacitor bank current (class, A rms) C2, 75–630 C2, 75–630 C2, 75–630 C2, 75–630 C2, 75–630 75–1000 C2, 75–1000 C2, 75–1000 C2, 75–1000 75–1000 7 75–1600 C1, 75–1000 C1, 75–1600 C1, 75–1600 75–1600 Inrush current (kA peak) 6 6 6 6 6 7 Inrush frequency (kHz) 0.8 0.8 0.8 0.8 0.8 0.5 0.5 0.5 0.5 0.5 7 0.3 0.3 0.3 0.3 0.3 Out-of-phase switching 7 Voltage = 1.44 x V (kV rms) 12 22 22 22 22 Current = 0.25 x l (kA rms) 12.5 6.3 10 12.5 15.8 7 Notes 1 6 All circuit breakers are tested at 60 Hz, however, they can also be applied at 50 Hz with no The asymmetrical interrupting current, I total, is given by (It) = I x Sqrt (1 + 2 x %DC x %DC) kA 7 de-rating. rms asym total. 2 4000A fan cooled rating is available for 3000A circuit breakers. 7 Duration of short-time current and maximum permissible tripping delay are both two seconds 3 7 These circuit breakers were tested to the preferred TRV ratings specified in C37.06-2000. for all circuit breakers listed in this table, as required in C37.04-1999, C37.06-2000 and 4 Because the voltage range factor K=1, the short-time withstand current and the maximum C37.06-2009. 8 symmetrical interrupting current are equal to the rated symmetrical interrupting current. RRRV can also be calculated as = 1.137 x E2/T2. 7 9 5 Based on the standard DC time constant of 45 ms (corresponding to X/R of 17 for 60 Hz) and Each operation consists of one closing plus one opening. the minimum contact parting time as determined from the minimum opening time plus the j All 40 and 50 kA circuit breakers exceed required 5000 no-load operations; all 63 kA circuit assumed minimum relay time of 1/2 cycle (8.33 ms for 60 Hz). breakers exceed the required 2000 no-load ANSI operations. 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-9 Medium Voltage Switchgear 7.2 Metal-Clad Vacuum Switchgear

Available VCP-W Vacuum Circuit Breaker Types Rated on Symmetrical Current Rating Basis, Per ANSI Standards 12 7 Circuit Breaker Type 50 VCP-WND 50 VCP-W 50 VCP-W 50 VCP-W 75 VCP-W 150 VCP-W 150 VCP-W 150 VCP-W 7 250 250 350 63 500 500 750 1000 7 Identification Nominal voltage class kV 4.16 4.16 4.16 4.16 7.2 13.8 13.8 13.8 7 Nominal three-phase MVA class 250 250 350 — 500 500 750 1000 Rated Values 7 Voltage Rated maximum voltage V kV rms 4.76 4.76 4.76 4.76 8.25 15 15 15 7 Rated voltage range factor K 3 1.24 1.24 1.19 1.0 1.25 1.30 1.30 1.30 Insulation level—rated withstand test voltage 7 Normal frequency kV rms 19 19 19 19 36 36 36 36 1.2 x 50 μsec. impulse kV crest 60 60 60 60 95 95 95 95 7 Current Rated continuous current at 60 Hz amp 4 1200 1200 1200 1200 1200 1200 1200 1200 7 — 2000 2000 2000 2000 2000 2000 2000 — 3000 3000 3000 3000 3000 3000 3000 7 Rated short-circuit current (at rated maximum kV)—I kA rms 3 29 29 41 63 33 18 28 37 Rated transient recovery voltage 7 Rated crest voltage —E2 kV crest 8.9 8.9 8.9 8.9 15.5 28 28 28 7 Rated time to crest—T2 μs 50 50 50 50 60 75 75 75 Rate of rise of recovery voltage kV/μs 5 0.2 0.2 0.2 0.2 0.29 0.42 0.42 0.42 7 Rated interrupting time cycles 6 5 5 5 5 5 5 5 5 Rated permissible tripping delay—Y sec. 7 2 2 2 2 2 2 2 2 7 Rated reclosing time ms 8 300 300 300 300 300 300 300 300 Related Required Capabilities 7 Rated maximum voltage divided by K—V/K kV rms 3.85 3.85 4.0 4.76 6.6 11.5 11.5 11.5 Current values 7 K times rated short-circuit current 3 Maximum sym. interrupting capability—KI kA rms 36 36 49 63 41 23 36 48 7 Three-second short-time current carrying capability—KI kA rms 36 36 49 63 41 23 36 48 Closing and latching capability (momentary) 9 7 2.7K times rated short-circuit current—2.7 KI kA crest 97 97 132 170 111 62 97 130 1.6K times rated short-circuit current—1.6 KI kA rms asym. j 58 58 78 101 66 37 58 77 7 Asymmetry Factor for VCP-W Breakers (S) k 1.2 1.2 1.2 1.27 1.2 1.2 1.2 1.2

Notes 7 1 5 E For capacitor switching, refer to Page V3-T7-13. RRRV = 1.137 ------2 T 2 5 and 15 kV circuit breakers are UL listed. 27 and 38 kV breakers are not UL listed. 2 6 7 3 For three-phase and line-to-line faults, the symmetrical interrupting capability at an Three-cycle rating available, refer to Page V3-T7-13. operating voltage 7 Tripping may be delayed beyond the rated permissible tripping delay at lower values of current in accordance with the following formula: 7 V I = (Rated Short-Circuit Current) sc V (K Times Rated Short-Circuit Current) 2 o T (seconds) = Y ()Short-Circuit Current Through Breaker 7 But not to exceed KI. Single line-to-ground fault capability at an operating voltage The aggregate tripping delay on all operations within any 30-minute period must not exceed the time obtained from the above formula. V 7 I = 1.15 (Rated Short-Circuit Current) 8 sc V For reclosing service, there is No De-Rating necessary Eaton’s VCP-W family of circuit o breakers. R = 100%. Type VCP-W breaker can perform the O-C-O per ANSI C37.09; O-0.3s- 7 But not to exceed KI. CO-15s-CO per IEC 56; and some VCP-Ws have performed O-0.3s-CO-15s-CO-15s-CO-15s-CO; The above apply on predominately inductive or resistive three-phase circuits with all with no derating. Contact Eaton for special reclosing requirements. normal-frequency line-to-line recovery voltage equal to the operating voltage. 9 For higher close and latch ratings, refer to Page V3-T7-13. 4 7 4000A continuous rating is available for 5/15 kV. 3000A continuous rating is j Included for reference only. available for 38 kV. Contact Eaton for details. k Asymmetrical interrupting capability = “S” times symmetrical interrupting capability, 7 both at specified operating voltage. 7 7 7

V3-T7-10 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear Metal-Clad Vacuum Switchgear 7.2

Available VCP-W Vacuum Circuit Breaker Types Rated on Symmetrical Current Rating Basis, Per ANSI Standards, continued 12 Circuit Breaker Type 7 150 VCP-W 270 VCP-W 270 VCP-W 270 VCP-W 270 VCP-W 63 750 1000 1250 40 7 Identification 7 Nominal voltage class kV 13.8 27 27 27 27 Nominal three-phase MVA class — — — — — 7 Rated Values Voltage 7 Rated maximum voltage kV rms 15 27 27 27 27 Rated voltage range factor K 3 1.0 1.0 1.0 1.0 1.0 7 Insulation level—rated withstand test voltage Normal frequency kV rms 36 60 60 60 60 7 1.2 x 50 μsec. impulse kV crest 95 125 125 125 125 Current 7 Rated continuous current at 60 Hz amp 4 1200 600 600 600 1200 2000 1200 1200 1200 2000 7 3000 2000 2000 2000 — Rated short-circuit current (at rated maximum kV)—I kA rms 3 63 16 22 25 40 7 Rated transient recovery voltage Rated crest voltage —E2 kV crest 28 51 51 51 51 7

Rated time to crest—T2 μs 75 105 105 105 105 5 7 Rate of rise of recovery voltage kV/μs 0.42 0.55 0.55 0.55 0.55 Rated interrupting time cycles 6 5 5 5 5 5 7 Rated permissible tripping delay—Y sec. 7 2 2 2 2 2 Rated reclosing time ms 8 300 300 300 300 300 7 Related Required Capabilities Rated maximum voltage divided by K—V/K kV rms 15 27 27 27 27 7 Current values K times rated short-circuit current 3 7 Maximum sym. interrupting capability—KI kA rms 63 16 22 25 40 Three-second short-time current carrying capability—KI kA rms 63 16 22 25 40 7 Closing and latching capability (momentary) 9 2.7K times rated short-circuit current—2.7 KI kA crest 170 43 60 68 108 7 1.6K times rated short-circuit current—1.6 KI kA rms asym. j 100 26 35 40 64 Asymmetry Factor for VCP-W Breakers (S) k 1.27 1.2 1.2 1.2 1.2 7 Notes 7 1 For capacitor switching, refer to Page V3-T7-13. 6 Three-cycle rating available, refer to Page V3-T7-13. 2 5 and 15 kV circuit breakers are UL listed. 27 and 38 kV breakers are not UL listed. 7 Tripping may be delayed beyond the rated permissible tripping delay at lower values of 3 For three-phase and line-to-line faults, the symmetrical interrupting capability at an current in accordance with the following formula: 7 operating voltage (K Times Rated Short-Circuit Current) 2 T (seconds) = Y V ()Short-Circuit Current Through Breaker 7 Isc = (Rated Short-Circuit Current) Vo The aggregate tripping delay on all operations within any 30-minute period must not exceed But not to exceed KI. the time obtained from the above formula. 7 Single line-to-ground fault capability at an operating voltage 8 For reclosing service, there is No De-Rating necessary for Eaton’s VCP-W family of circuit breakers. R = 100%. Type VCP-W breaker can perform the O-C-O per ANSI C37.09; O-0.3s- V I = 1.15 (Rated Short-Circuit Current) CO-15s-CO per IEC 56; and some VCP-Ws have performed O-0.3s-CO-15s-CO-15s-CO-15s-CO; 7 sc V o all with no derating. Contact Eaton for special reclosing requirements. But not to exceed KI. 9 For higher close and latch ratings, refer to Page V3-T7-13. 7 The above apply on predominately inductive or resistive three-phase circuits with j Included for reference only. normal-frequency line-to-line recovery voltage equal to the operating voltage. k 4 Asymmetrical interrupting capability = “S” times symmetrical interrupting capability, 4000A continuous rating is available for 5/15 kV. 3000A continuous rating is both at specified operating voltage. 7 available for 38 kV. Contact Eaton for details.

5 E RRRV = 1.137 ------2 7 T2 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-11 Medium Voltage Switchgear 7.2 Metal-Clad Vacuum Switchgear

Available VCP-W Vacuum Circuit Breaker Types Rated on Symmetrical Current Rating Basis, Per ANSI Standards, continued 12 7 Circuit Breaker Type 380 VCP-W 380 VCP-W 380 VCP-W 380 VCP-W 380 VCP-W 7 16 21 25 32 40 7 Identification Nominal voltage class kV 34.5 34.5 34.5 34.5 34.5 7 Nominal three-phase MVA class ————— Rated Values 7 Voltage Rated maximum voltage kV rms 38 38 38 38 38 7 Rated voltage range factor K 3 1.0 1.65 1.0 1.0 1.0 Insulation level—rated withstand test voltage 7 Normal frequency kV rms 80 80 80 80 80 1.2 x 50 μsec. impulse kV crest l 170 l 170 l 170 l 170 l 170 l 7 Current Rated continuous current at 60 Hz amp 4 600 1200 600 600 600 7 1200 2000 1200 1200 1200 1600 — 1600 1600 1600 7 2000 — 2000 2000 2000 — — — 2500 2500 7 3 Rated short-circuit current (at rated maximum kV)—I kA rms 16 21 25 31.5 40 7 Rated transient recovery voltage Rated crest voltage —E2 kV crest 71 71 71 71 71

7 Rated time to crest—T2 μs 125 125 125 125 125 Rate of rise of recovery voltage kV/μs 5 0.64 0.64 0.64 0.64 0.64 7 Rated interrupting time cycles 6 5 5 5 5 5 7 7 Rated permissible tripping delay—Y sec. 2 2 2 2 2 Rated reclosing time ms 8 300 300 300 300 m 7 Related Required Capabilities Rated maximum voltage divided by K—V/K kV rms 38 23 38 38 38 7 Current values K times rated short-circuit current 3 7 Maximum sym. interrupting capability—KI kA rms 16 35 25 31.5 40 Three-second short-time current carrying capability—KI kA rms 16 35 25 31.5 40 7 Closing and latching capability (momentary) 9 2.7K times rated short-circuit current—2.7 KI kA crest 43 95 68 85 108 7 1.6K times rated short-circuit current—1.6 KI kA rms asym. j 26 56 40 51 64 Asymmetry Factor for VCP-W Breakers (S) k 1.2 1.2 1.2 1.2 1.2

7 Notes 1 For capacitor switching, refer to Page V3-T7-13. 6 Three-cycle rating available, refer to Page V3-T7-13. 7 2 5 and 15 kV circuit breakers are UL listed. 27 and 38 kV breakers are not UL listed. 7 Tripping may be delayed beyond the rated permissible tripping delay at lower values of 3 For three-phase and line-to-line faults, the symmetrical interrupting capability at an current in accordance with the following formula: operating voltage (K Times Rated Short-Circuit Current) 2 7 T (seconds) = Y V ()Short-Circuit Current Through Breaker Isc = (Rated Short-Circuit Current) 7 Vo The aggregate tripping delay on all operations within any 30-minute period must not exceed But not to exceed KI. the time obtained from the above formula. Single line-to-ground fault capability at an operating voltage 8 For reclosing service, there is No De-Rating necessary for Eaton’s VCP-W family of circuit breakers. R = 100%. Type VCP-W breaker can perform the O-C-O per ANSI C37.09; O-0.3s- 7 V I = 1.15 (Rated Short-Circuit Current) CO-15s-CO per IEC 56; and some VCP-Ws have performed O-0.3s-CO-15s-CO-15s-CO-15s-CO; sc V o all with no derating. Contact Eaton for special reclosing requirements. 7 But not to exceed KI. 9 For higher close and latch ratings, refer to Page V3-T7-13. The above apply on predominately inductive or resistive three-phase circuits with j Included for reference only. normal-frequency line-to-line recovery voltage equal to the operating voltage. k 7 4 Asymmetrical interrupting capability = “S” times symmetrical interrupting capability, 4000A continuous rating is available for 5/15 kV. 3000A continuous rating is both at specified operating voltage. available for 38 kV. Contact Eaton for details. l ANSI standard requires 150 kV BIL. All 38 kV ratings are tested to 170 kV BIL. 7 m 5 E Type 380 VCP-2 40 circuit breaker is not rated for rapid reclosing. RRRV = 1.137 ------2 7 T2 7

V3-T7-12 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear Metal-Clad Vacuum Switchgear 7.2

Extra Capability Type VCP-WC Ratings (Symmetrical Current Basis) Circuit Breaker Type 7 50 VCP-W 25C 50 VCP-W 40C 50 VCP-W 50C 50 VCP-W 63C 75 VCP-W 50C 7 Rated Values Voltage 7 Maximum voltage V kV rms 5.95 5.95 5.95 5.95 10.3 Voltage range factor K 11111 7 Insulation level—withstand test Power frequency (1 min.) kA rms total 24 24 24 24 42 7 Lighting impulse 1.2 x 50 μs kV peak 75 75 75 75 95 Continuous current at 60 Hz A rms 1200 1200 1200 1200 1200 7 2000 2000 2000 2000 2000 3000 4 3000 4 3000 4 3000 4 3000 4 7 Short-circuit current Sym. interrupting at voltage (Isc) kA rms total 25 40 50 63 50 7 % DC component (Idc) 50 75 57 62 57 75 — 57 — 57 7 75 — 52 — 52 7 Asym. interrupting (It) kA rms 31 58 64 83 64 36 — 64 — 64 7 36 — 62 — 62 Closing and latching capability kA peak 97 139 139 175 139 7 Short-time current for 3 seconds kA rms 1 25 40 50 63 50 2 7 Interrupting time ms 50 50 50 50 50 Maximum permissible tripping delay sec. 2.0 2.0 2.0 2.0 2.0 7 Rate of rise of recovery voltage (RRRV) kV/μs 3 0.9 0.9 0.9 1.1 0.9 0.9 0.9 0.9 — 0.9 7 0.8 0.8 0.8 — 0.8 Capacitor switching ratings 7 General purpose—isolated shunt capacitor bank current A rms 400 and 630 630 5 630 5 250 630 5 1000 5 1000 5 1000 5 — 1000 5 7 250 250 250 — 250 7 Definite purpose—back-to-back capacitor switching Capacitor bank current A rms 400 and 630 630 6 630 6 200, 1600 7 630 6 1000 6 1000 6 1000 6 200, 1600 7 1000 6 7 ———200, 1600 7 — 7 Inrush current kA peak 20 and 20 15 15 7.7 15 18 18 18 7.7 18 7 ———7.7— Inrush frequency kHz 6.5 and 5.5 3.5 3.5 465 3.5 7 2.7 2.7 2.7 465 2.7 7 ———465— Mechanical Endurance—No-Load Operations 10,000 10,000 10,000 10,000 10,000 7 10,000 10,000 10,000 10,000 10,000 5000 5000 5000 5000 5000 7 Notes 1 Except as noted. 6 Breaker tested to 1270A back-to-back switching for momentary load 7 2 Three cycles. (thermal de-rating must consider harmonic content of current waveform). 7 3 Contact Eaton for higher RRRV or for more information. C37.04.a-2003 Class C2 at 15 kV. 7 4 4000A FC rating available. 38 kV, 2500A and 3000A WC breakers are not rated for rapid reclosing. 5 Breaker tested to 2700A single bank switching for momentary load (thermal de-rating must consider harmonic content of current waveform). 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-13 Medium Voltage Switchgear 7.2 Metal-Clad Vacuum Switchgear

Extra Capability Type VCP-WC Ratings (Symmetrical Current Basis), continued 7 Circuit Breaker Type 7 150 VCP-W 25C 150 VCP-W 40C 150 VCP-W 50C 150 VCP-W 63C 270 VCP-W 25C Rated Values Voltage 7 Maximum voltage V kV rms 17.5 17.5 17.5 15 27 7 Voltage range factor K 11111 Insulation level—withstand test 7 Power frequency (1 min.) kA rms total 42 42 42 42 60 Lighting impulse 1.2 x 50 μs kV peak 95 96 95 95 125 7 Continuous current at 60 Hz A rms 1200 1200 1200 1200 1200 2000 2000 2000 2000 1600 7 3000 4 3000 4 3000 4 3000 4 — Short-circuit current 7 Sym. interrupting at voltage (Isc) kA rms total 25 40 50 63 25 % DC component (Idc) 50 75 57 62 75 7 75 — 57 — — 7 75 — 52 — — Asym. interrupting (It) kA rms 31 58 64 83 36 7 36 —64 —— 36 —62 —— 7 Closing and latching capability kA peak 97 5 139 139 175 85 Short-time current for 3 seconds kA rms 1 25 40 50 63 25 6 7 Interrupting time ms 2 50 50 50 50 50 Maximum permissible tripping delay sec. 2.0 2.0 2.0 2.0 2.0 7 Rate of rise of recovery voltage (RRRV) kV/μs 3 0.9 0.9 0.9 1.1 1.1 7 0.9 0.9 0.9 — — 0.8 0.8 0.8 — — Capacitor switching ratings 7 General purpose—isolated shunt capacitor bank current A rms 400A and 630 7 630 78 630 78 250 400 7 1000 78 1000 78 1000 78 —— 250 7 250 7 250 7 —— Definite purpose—back-to-back capacitor switching 7 7 79 79 Capacitor bank current A rms 400 and 600 630 630 200, 1600 j 400 7 1000 79 1000 79 1000 79 200, 1600 j — ———200, 1600 j — 7 Inrush current kA peak 20 and 20 15 15 7.7 20 18 18 18 7.7 — 7 ———7.7 — Inrush frequency kHz 6.5 and 5.5 3.5 3.5 465 4.2 7 2.7 2.7 2.7 465 — 7 ———465 — Mechanical Endurance—No-Load Operations 10,000 10,000 10,000 10,000 5000 7 10,000 10,000 10,000 10,000 — 5000 5000 5000 5000 —

7 Notes 1 Except as noted. 7 Capacitor switching ratings are proven at 15 kV. For sealed interrupters at high altitudes, 7 2 Three cycles. switching voltage is not de-rated. 8 3 Contact Eaton for higher RRRV or for more information. Breaker tested to 2700A single bank switching for momentary load 4 4000A FC rating available. (thermal de-rating must consider harmonic content of current waveform). 9 7 5 Close and latch current for 1200A Type 150 VCP-W 25C is proven at 15 kV. Breaker tested to 1270A back-to-back switching for momentary load For sealed interrupters at high altitudes, switching voltage is not de-rated. (thermal de-rating must consider harmonic content of current waveform). 7 6 2.5 seconds. j C37.04.a-2003 Class C2 at 15 kV. 38 kV, 2500A and 3000A WC breakers are not rated for rapid reclosing. 7 7

V3-T7-14 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear Metal-Clad Vacuum Switchgear 7.2

Extra Capability Type VCP-WC Ratings (Symmetrical Current Basis), continued Circuit Breaker Type 7 270 VCP-W 32C 270 VCP-W 40C 380 VCP-W 16C 380 VCP-W 25C 380 VCP-W 32C 380 VCP-W 40C 7 Rated Values Voltage 7 Maximum voltage V kV rms 27 27 38 38 38 38 Voltage range factor K 1 1 1 1 1 1 7 Insulation level—withstand test Power frequency (1 min.) kA rms total 60 60 80 80 80 80 7 Lighting impulse 1.2 x 50 μs kV peak 125 125 170 170 170 170 Continuous current at 60 Hz A rms 1200 1200 600 600 600 1200 7 1600 1600 1200 1200 1200 2000 — — 1600 1600 1600 2500 7 4 — — 2000 2000 2000 3000FC 7 ————2500— ————3000FC 5 — 7 Short-circuit current Sym. interrupting at voltage (Isc) kA rms total 31.5 40 16 25 33.1 40 7 % DC component (Idc) 55 50 75 65 57 63

Asym. interrupting (It) kA rms 40 49 23.3 34.0 42.5 53.5 7 Closing and latching capability kA peak 100 112 50 75 91 107 Short-time current for 3 seconds kA rms 1 31.5 f 40 g 16 25 31.5 8 40 7 2 Interrupting time rms 50 50 50 50 50 50 7 Maximum permissible tripping delay sec. 2.0 2.0 2.0 2.0 2.0 2.0 Rate of rise of recovery voltage (RRRV) kV/μs 3 1.1 1.1 0.7 0.7 0.7 0.7 7 — — 0.7 0.7 0.7 — — — 1.3 1.3 0.7 — 7 ————1.3 — ————0.7 — 7 ————1.3 — 7 Notes 1 Except as noted. 7 2 Three cycles. 3 Contact Eaton for higher RRRV or for more information. 7 4 2500A FC to 3000A. 5 2000A FC to 3000A. 7 f 1.6 seconds. g 1 second. 8 2.5 seconds. 7 38 kV, 2500A and 3000A WC breakers are not rated for rapid reclosing. 7 7 7 7 7 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-15 Medium Voltage Switchgear 7.2 Metal-Clad Vacuum Switchgear

Extra Capability Type VCP-WC Ratings (Symmetrical Current Basis), continued 7 Circuit Breaker Type 7 270 VCP-W 32C 270 VCP-W 40C 380 VCP-W 16C 380 VCP-W 25C 380 VCP-W 32C 380 VCP-W 40C Rated Values, continued 7 Capacitor switching ratings General purpose—isolated shunt capacitor bank current A rms 400 400 250 250 250 — 7 — — 250 250 250 — — — 250 250 250 — 7 — — 250 and 1000 250 and 1000 250 and 1000 — —————— 7 — — — — 250 and 1000 — Definite purpose—back-to-back capacitor switching 7 Capacitor bank current A rms 400 400 250 250 250 — 7 — — 250 250 250 — — — 250 250 250 — 7 — — 250 and 1000 250 and 1000 250 and 1000 — —————— 7 — — — — 250 and 1000 — Inrush current kA peak 20 20 20 20 20 — 7 — — 20 20 20 — 7 — — 20 and 20 20 and 20 20 and 20 — —————— 7 ————20 and 20 — Inrush frequency kHz 4.2 4.2 4.4 4.4 4.4 — 7 — — 4.4 4.4 4.4 — — — 4.4 4.4 4.4 — 7 — — 5 and 5 5 and 5 5 and 5 — 7 —————— ————5 and 5 — 7 Mechanical Endurance—No-Load Operations 5000 5000 10,000 10,000 10,000 10,000 Note 7 38 kV, 2500A and 3000A WC breakers are not rated for rapid reclosing. 7 7 7 7 7 7 7 7 7 7 7 7

V3-T7-16 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear High Resistance Grounding System 7.3

C-HRG Free-Standing NEMA 1 Unit Contents 7 Description Page High Resistance Grounding System 7 Features, Benefits and Functions ...... V3-T7-20 Standards and Certifications ...... V3-T7-20 7 Catalog Number Selection ...... V3-T7-21 Technical Data and Specifications ...... V3-T7-22 7 Dimensions ...... V3-T7-25 7 7 7 7 7 7

Product Description Application Description 7 Where continuity of service is This member of Eaton’s MV 4200V (Maximum) 4200V (Maximum) a high priority, high resistance metal-clad switchgear family Delta Systems Wye Systems 7 grounding can add the safety has actually been around To add high resistance To add high resistance of a grounded system while for many years. The free- grounding to an ungrounded grounding to a wye- 7 minimizing the risk of service standing C-HRG provides delta-connected system, connected system, resistors interruptions due to grounds. a standalone unit that a neutral point must be are placed across the 7 The concept is a simple one: can be added to existing created. Three single- secondary of a grounding provide a path for ground installations. The C-HRG is phase transformers can be transformer whose primary 7 current via a grounding used to protect an electrical interconnected in a wye- is placed in series with the transformer (with adjustable distribution system from broken delta configuration neutral-to-ground connection resistance across its damaging transient to provide such a neutral of the power source. The 7 secondary) that limits the overvoltages caused by point. The transformers resistors are chosen to limit current magnitude and a ground faults. It also provides and grounding resistors are the current to a maximum 7 monitor to determine when a means to locate the ground chosen to limit the ground value of 6A. an abnormal condition exists. fault, therefore extending the current to a maximum value Note: Per 1993 NEC® 250.5b, 7 life of the distribution system. of 6A. The ground current path is exception No. 5, line-to-neutral provided at the point where Ratings and Configurations Note: The neutral point may not loads may not be connected to 7 be used to serve phase-to-neutral a system in which the neutral the service begins, by placing The C-HRG MV is offered is resistance grounded. Also, if a predominantly resistive loads. Also, this technique may at the 5 kV class rating. It be applied on wye-connected the system has two switchable 7 impedance in the connection can be applied to delta or sources when the neutral point is sources not permanently from system neutral to wye ungrouped three-wire not conveniently accessible from connected to the bus, two 7 ground. Control equipment distribution systems. the service entrance location. wye-type grounding systems continuously measures This method is shown in the are required as shown on ground current; a relay detects illustration shown on Page V3-T7- Page V3-T7-23. 7 when the current exceeds a 23. One delta high resistance predetermined level. An alarm grounding would ground the 5 kV 7 alerts building personnel that a system. ground exists. The system 7 has built-in fault tracing means to assist in finding the source of the ground. A 120 Vac 7 supply (remote) is required for control power for the system. 7 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-17 Medium Voltage Switchgear 7.3 High Resistance Grounding System

Ground Current Detection Indication and Alarm Circuits Test Circuit Locating a Ground Fault 7 Any time a system is When a fault is detected, A test circuit is provided to The current pulses can be energized, a small ground an adjustable time delay is allow the user to quickly noted with a clamp-on 7 current called the “capacitive provided to override determine that the system ammeter when the ammeter charging current” will be transients. When the time is working properly. The test is placed around the cables or 7 observed. For medium delay has been exceeded, circuit will operate only under conduit feeding the fault. The voltage (4200V and below) the green “normal” light will normal conditions—it will not operator tests each conduit or 7 systems, this naturally turn off, the red “ground allow testing if the system is set of cables until the pulsing occurring current is typically fault” light will turn on, and sensing a fault. The test current is noted. By moving 3A or less. the ground alarm contacts operation does not simulate the ammeter along the 7 will transfer. If equipped an actual system ground conduit, or checking the When one phase becomes with the optional alarm horn, fault. It does, however, test conduit periodically along its 7 grounded, additional current it will sound. the complete controls of the length, the fault can be traced above the charging level will fault indication and pulsing to its origin. The fault may be 7 flow. As all ground current The grounding transformer circuitry. The system then located at the point where must flow through the secondary breaker must be reacts as it would under the pulsing current drops off grounding resistor/grounding closed for the system to be actual system ground or stops. 7 transformer assembly, an operational. Should this conditions —lights transfer, ammeter in this circuit will breaker be opened at any alarm contacts transfer and If little or no change in the 7 read the total amount of time, the system will signal the (optional) horn sounds. pulsing current is noted along ground current. By placing a ground fault condition as a the entire length of a conduit, 7 a current-sensing relay in fail-safe feature. The breaker Pulser Circuit then the fault may be in the series with the ammeter, the must be closed to clear the The pulser circuit offers a connected load. If the load is 7 current relay can be adjusted alarm signal. convenient means to locate a panelboard, distribution to pick up at a level in excess the faulted feeder and trace switchboard or motor control of the capacitive charging When the fault is cleared, center, repeat the process of the current/voltage relay will the fault to its origin. The 7 current, thus indicating the pulser is available any time checking all outgoing cable abnormal condition. reset. If the reset control is groups and conduits to find set on “auto,” the lights will a fault has been detected. 7 The pulse intervals are the faulted feeder. If the fault Alternatively, an optional return to “normal” on, is not found in an outgoing voltmeter-relay can be “ground fault” off, and the controlled by an adjustable recycle timer. The “pulse” feeder, the fault may be 7 connected across the ground alarm contacts will internal to that equipment. grounding resistors. The re-transfer. If the reset light flashes on and off, 7 voltage across the resistors control is set on “manual,” corresponding to the Note: It may not be possible to is proportional to the amount the lights and relay contacts on-off cycles of the pulser precisely locate faults within a 7 of ground current. The will remain latched until the contactor. The pulser conduit. The ground current may voltmeter-relay’s pickup operator turns the reset contactor switches a bank divide into many components, of resistors on and off, depending on the number of adjustment is set above the control to “reset.” The lights cables per phase, number of 7 capacitive charging current, and ground alarm contacts thus allowing a momentary increase in the ground current conduits per feeder, and the to the desired detection level. will then return to normal. number and resistance of each 7 The system can be reset only (approximately a 4A current ground point along the conduits. In both current and voltage if the fault has been cleared. pulse above the ground The resulting currents may be too 7 detection methods, the current). small to allow detection or may ground current ammeter During a fault, the optional take a path that the ammeter provides a direct reading of alarm horn can be silenced at cannot trace. An important note 7 the total actual ground any time by using the “alarm to keep in mind is that while the current present in the system silence” pushbutton. It will pulser can greatly aid in locating 7 at that time. It will be helpful not re-sound until either the a fault, there may be certain to periodically note the system is reset, or the re- conditions under which the pulses cannot be readily traced, ammeter’s reading: a trend alarm timer expires. The re- 7 and other test procedures toward higher values may alarm timer is activated by (megohm, high-potential, etc.) indicate the need for the “alarm silence” control. If may be needed. 7 equipment maintenance, and the horn has been silenced hence reduce the occurrence but the fault has not been 7 of unplanned shutdowns. cleared, the timer will run. It has a range of 2–48 hours. 7 When the timer times out, the horn will re-sound, alerting maintenance 7 personnel that the fault 7 has not been cleared. 7 7 7

V3-T7-18 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear High Resistance Grounding System 7.3

Sequence of Operations 7 Normal Test Ground Fault ● Green “normal” light on Turn and hold the system When the sensing circuit 7 ● Red “ground fault” light off control switch in the “test” detects a fault, the green position. This mode will test “normal” light will turn off ● White “pulse” light off 7 the control circuitry only. and the red “ground fault” ● System control switch in It will bypass the sensing light will turn on. The ground 7 “normal” position circuit and cause the green current ammeter will indicate ● Reset control switch in “normal” light to turn off and the total ground current. either “auto” or “manual” the red “ground fault” light To use the pulser, turn the 7 to turn on. The pulser will be system control switch to activated as well. The white “pulse.” The pulser contactor 7 “pulse” light will turn on and will cycle on and off as off as the pulser contactor controlled by the recycle 7 closes and opens. However, timer relay. Use the clamp-on the ground current ammeter ammeter to locate the faulted will not display the total feeder. Open the feeder and 7 ground current, including the clear the fault. If the reset incremental pulse current. control switch is in the 7 When ready, return the “manual” position, turn it to system control switch to “reset” to reset the sensing 7 “normal.” The pulser will circuit. (If reset control is in stop. If the reset control is in “auto,” it will reset itself.) 7 the “manual” position, turn it When ready to restore service to “reset” to reset the fault to the load, close the feeder. sensing circuit. The red Return the system control 7 “ground fault” light will turn to “normal.” off, and the green “normal” 7 light will turn on. Test mode is not available if the system 7 is detecting a ground. The sensing circuit will disable the test circuit. 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-19 Medium Voltage Switchgear 7.3 High Resistance Grounding System

7 Features, Benefits and Functions Standards and When a ground fault occurs When the ground current Certifications on an ungrounded system, exceeds a predetermined level, The system shall be 7 high transient voltages can the built-in alarm relay alerts completely assembled, wired occur, which may cause more building personnel that a and tested at the factory in 7 frequent equipment failures ground fault exists. In accordance with NEMA and than if the equipment were addition, the C-HRG MV UL requirements. A certified 7 grounded. These transient “safe ground” system has production test report shall be overvoltages, as high as four a built-in fault pulsing as a shipped with the unit. times the normal voltage, means to assist in finding the 7 reduce the life of the system’s source of the ground fault 7 insulation resulting in: without interrupting service. ● Motor failure ● Current sensing 7 ● Transformer failure ground fault detection (2–10A pickup/ ● Coil failure 0.5–20 second delay) ● Electronic equipment 7 ● failure Ground current transformer (10/10 ratio) ● Cable insulation failure 7 ● Control circuit pull By using a high resistance fuseblock 7 ground system, many ● Ground current ammeter facilities can gain the benefit (0–10A, 1% accuracy) 7 of a grounded system ● Indicating lights: without impairing the ● 7 continuity of service to their Red (ground fault) equipment. The concept ● Green (normal) 7 behind high resistance ● White (pulse) grounding is to provide a path ● Adjustable pulsing timer for the ground current to flow (0–10 seconds) 7 while limiting its magnitude ● Tapped resistors by using a resistor. The (limits primary current 7 ground current path is to 3–6A) provided at the point where ● 7 service begins. Control Three-position selector equipment continuously switch (normal, pulse, test) monitors the magnitude ● Control switch for manual 7 of the ground current. or automatic reset ● Ground fault contacts 7 (1NO/1NC) ● Shorting terminal block 7 for ground current CT ● UL label 7 ● Wiremarkers 7 7 7 7 7 7 7 7 7 7

V3-T7-20 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear High Resistance Grounding System 7.3

Catalog Number Selection 7 A C-HRG High Resistance Grounding Assembly can be completely described by an 8-digit catalog number: MVRG-______7 High Resistance Grounding Systems 7 MVRG F X D D N L T S 7 Enclosure Type Wiremarkers Free-standing enclosure for mounting Marks all internal wiring for ease 7 grounding transformer and resistors of maintenance. internally. Fault Sensing S = Standard wrap-on 7 F = Free-standing NEMA 1 Current sensing T = Tube/heat shrink type R = Free-standing NEMA 3R outdoor Voltage sensing Voltage sensing Indicating Lamps 7 Service Voltage C = Overcurrent relay Standard lights are industrial, oil-tight, W= 4200V, 60 Hz V = Single set point voltmeter relay transformer type. Optional are the same 7 X = 2400V, 60 Hz D = Indicating voltmeter only type lights except with a push-to-test Y = 3300V, 60 Hz feature. Audible Alarm T = Transformer type incandescent lamps 7 System Neutral Point Alarm contacts are standard X = Push-to-test transformer type Choose wye when the neutral point of on all assemblies. 7 the power source is accessible for direct N = No audible alarm Loss of Control connection to grounding transformer. L = Alarm horn with Power Alarm 7 Choose delta when there is no neutral or re-alarm timer A relay is connected across when neutral is not accessible. the customer’s 120 Vac W=Wye supply. 7 D = D (wye broken delta N =No relay grounding transformer) L = Alarm relay with 7 1NO and 1NC 7 Example: MVRG-FWWCLLTS defines a free-standing NEMA 1 enclosure, 4200V/60 Hz, wye-connected system, current-sensing control scheme, alarm horn with re-alarm timer, alarm relay with 1NO and 1NC, transformer type incandescent lights, wrap-on wiremarkers. 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-21 Medium Voltage Switchgear 7.3 High Resistance Grounding System

7 Technical Data and Specifications General System Ratings and Features 7 Provide a high resistance ● Top and bottom cable Provide a UL-labeled high- ● Tapped resistors grounding system as a means entry areas resistance grounding system (across neutral forming 7 to provide a path ● Phase and neutral equal to Eaton catalog transformer secondary, for ground current via a terminals accept #4 AWG number ______for use on limiting primary current 7 resistance that limits the to 500 kcmil a system with a short-circuit to 3–6A) current magnitude. While capacity of __kA at ____ volts. ● ● Ground terminal accepts Three-position selector monitoring the ground wire sizes from #4 AWG The structure shall be a [free- switch (normal, pulse, test) 7 current, the system must be standing NEMA 1] [free- to 500 kcmil. Ground bus is ● Indicating lights: able to determine when an 1/4-inch (6.35 mm) x 2-inch standing NEMA 3R]. The Red (ground fault) 7 abnormal condition exists. (50.8 mm) copper system neutral point shall Green (normal) Once the abnormality is be provided by [the power ● White (pulse) 7 detected, the system shall The powder paint is applied transformer’s wye neutral alert building personnel that to the parts point] [wye-broken delta Components and electrostatically. Metal a ground exists. The system grounding transformers]. Connections 7 shall be suitable for 5000V surfaces are prepared by The ground current shall be Phase and neutral terminals maximum service, and spray cleaning and detected with [an overcurrent shall accept #4 AWG to 500 designed and tested for that phosphatizing. The powder relay] [a single set point 7 kcmil wire. Ground terminals voltage class in accordance paint is a polyester voltmeter relay]. [An alarm shall accept wire sizes from with the latest standards of urethane. The standard horn with re-alarm timer is 7 #8 AWG to 500 kcmil. Ground NEMA and UL. color is ANSI 61, light gray. required.] [An alarm to bus shall be 1/4-inch (6.35 mm) The paint is applied to a indicate the loss of control ● x 2-inch (50.8 mm) copper. 7 Tapped resistors supply thickness of 1.5 mil power is required.] The #4 AWG wire shall be used for primary ground current ● Appropriate current limit indicating lights shall all internal connections from 7 between 3 and 6A in drawout type fuses are be [transformer-type the neutral point to ground. 1A increments provided. The chassis is incandescent lamps] [push-to- Control connections shall be ● Pulse current is an mechanically interlocked test transformer type lamps]. 7 a minimum of #14 gauge. All additional 4A. (pulse with a secondary circuit Control wiring shall be control wire insulation shall currents of a lower breaker to prevent its marked using [wrap-on type] 7 be type SIS. All control wiring magnitude may be difficult withdrawal under [heat-shrink sleeve type] shall be labeled at each end. to detect) load conditions wiremarkers. [A portable Wiring within the resistor 7 ● ● clamp on detector with 1/2/5/ Pulse timer is adjustable Resistors are grid type to assembly shall be rated for 10/20A scales, a shorting from 3 to 60 pulses provide the maximum area 200°C service. 7 per minute for heat dissipation switch and a storage case is ● Time delay for current ● No. 4 AWG wire is used for required]. Structure 7 sensing relay is 0.5 to internal connections from In addition to the components The unit shall be free- 20 seconds with a 2 to the neutral point to ground. specified, the following shall standing and house the 7 10A pickup. Time delay Control connections are a be supplied with each resistor bank within an for voltage sensing relay is minimum of #14 gauge. system: isolated section of the 7 1 to 60 seconds All control wires insulation structure. Access to the ● ● “Pull-type” fuse is type SIS Ground current resistor shall be via a bolted- 7 disconnects are supplied ● Recommended spare transformer (10/10 ratio) on cover. The rear cover shall for control equipment parts list ● Control circuit disconnect be removable. The structure protection ● Steel pocket on the inside switch (fused) shall provide top and bottom 7 ● All exterior nameplates are of the door is provided to ● Ground current ammeter cable entry points. Lifting fastened with stainless hold drawings and manuals (0–10A, 1% accuracy) angles shall be provided to facilitate the installation of the 7 steel screws ● Control switch for manual Note: The C-HRG units can unit. The structure shall be ● Nameplates are 2-ply or automatic reset be applied on any three-wire suitable for moving on rollers 7 with 3/16-inch (4.8 mm) ● distribution system, regardless Ground fault contacts and shall be skidded for lettering. The nameplate of the manufacturer of the (1NO/1NC) for shipment in a manner size is 1-inch (25.4 mm) distribution equipment or 7 customer use suitable for handling by x 2-1/2-inch (63.5 mm). source power transformer. ● Shorting terminal block a forklift. 7 White background with for ground current CT black lettering is standard All steel parts (except for ● Adjustable pulsing timer plated parts) shall be (0–10 seconds) 7 thoroughly cleaned and phosphatized prior to the 7 application of the light gray ANSI No. 61 finish. A pocket 7 is required on the inside of the control compartment 7 door to store drawings and manuals. 7

V3-T7-22 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear High Resistance Grounding System 7.3

Wiring Diagram 7 HRG—High Resistance Grounding System 7 Wye HRG 7 51N 7 7 59 7 7 Utility Delta HRG 7

59 7

Wye HRG 7 Generator 7 59 7 Bus Bus Duct Duct 51N 51 7 7

5 kV Switchgear 7 7 7 Conduit Cable Bus 7 Duct 7 To MCC To Power Circuit 7 7 7 7 7 7 7 7 7 7 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-23 Medium Voltage Switchgear 7.3 High Resistance Grounding System

7 Circuit Diagrams Ungrounded Wye System (with standard current and Ungrounded Delta System (with standard current and 7 optional voltage relay fault detectors) optional voltage relay fault detectors)

H3 X3 X0 H3 X3 7 X1 H1 H1 X1 H2 X2 H2 X2 7 Ungrounded Ungrounded To To Wye Distribution Delta Distribution 7 Circuits Circuits 7 X0 5 kV - CLE 7 Fuses 5 kV - CLE Fuses 7 [1] Control 7 Power Transformer 3-Auxiliary 7 Control Interlock Mechanical Mechanical Interlock Power 7 Secondary Transformers Circuit Short Secondary Circuit B Breaker B Circuit B B Short-Circuit 7 T.B. Breaker T.B. Option

7 59 59 C C CT 10/10A 7 CT 10/10A 4 4 3A 3A 7 4A 4A AM AM 5A 5A 7 6A 6A

7 5IN 5IN Pulsing Resistor Grounding Resistor Pulsing Resistor Grounding Resistor Pulsing Contactor Pulsing Contactor 7 Ground Ground Current Current 7 Adjustment Adjustment T.B. T.B. Current Current Voltage Voltage Optional Optional Detector 7 Detector Detector Detector 7 20A 20A

To Fuses To Fuses 7 Remote Control 120V Remote Control 120V Circuit Circuit Alarm 20A 60 Hz Alarm 20A 60 Hz 7 Supply Supply

7 Optional Optional

7 G R W G R W

Normal Alarm Pulsing Audible Normal Alarm Pulsing Audible 7 Alarm Alarm 7 7 7 7

V3-T7-24 Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com Medium Voltage Switchgear High Resistance Grounding System 7.3

Dimensions 7 Approximate Dimensions in Inches (mm) 7 NEMA 1 Free-Standing

36.00 7 (914.4) 7 7 7 7 40.00 (1016) Vent 7 7 3.50 (88.9) 7 Primary Conduit Entrance 7 3.62 2.00 (50.8) Diameter (91.9) 8.50 Knockout 7 (215.9) for Secondary Conduit Entrance 7 1.50 (38.1) 7 3.76 3.25 (95.6) (82.6) 7 Plan View 92.00 7 (2336.8) 0.81 (20.6) 7 0.81 0.562 (14.3) Diameter (4) (20.6) 7 7

2.75 2.75 7 (69.9) (69.9) 7 7. 1 2 (180.9) 7 3.75 (95.3) 7 3.50 Primary Conduit (88.9) Conduit Entrance 7 3.75 1.75 (95.3) 7 36.00 (44.5) (914.4) 2.75 7 9.38 (69.9) Front View 3.75 (238.3) (95.3) 7

3.00 Secondary Conduit (76.2) 7 2.75 Entrance (69.9) 7 Floor Plan 7

Volume 3—Power Distribution and Control Assemblies CA08100004E—July 2015 www.eaton.com V3-T7-25