Electromechanics > Switches
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
Switches and Relays for the Power Industry
Switches and Relays For the Power Industry E L E C T R O NEVER S W I T A DOUBT C H U T I L I T Y ELECTROSWITCH Corporation 180 King Avenue P Weymouth, MA 02188 R TEL: (781) 335-5200 O FAX: (781) 335-4253 www.electroswitch.com D U C T S 5M 113 Printed in USA U.2.D THE ELECTRO SWITCH CORPORATion Family… PROVIDING INTELLIGENT SOLUTIONS FOR SWITCHING AND CONTROL Complete line of electrically and manually activated Rotary Switches and Relays POWER SWITCHES & RELAYS for electric utility, defense, and industrial monitoring and control applications The Best Rotary Switches, Relays, and Electrical Systems Products... Backed by the industry’s most www.electroswitch.com knowledgeable and responsive Rotary Switches; Miniature Toggle, Paddle, Rocker, Power Toggle, and Push- ELECTRONIC PRODUCTS Button Switches; Hall Effect, and Mechanical Encoders; Illuminated Switch engineering and customer Products; and Power Transformers service professionals... Any way you want them... Delivered when you need them. www.electro-nc.com DIGITRAN Digital and Rotary Switch Products designed for aviation, defense, and industrial DIGITAL & ROTARY SWITCHES switch applications ELECTROSWITCH www.digitran-switches.com ARGA CONTROLS Electric utility, industrial and military-grade Power Meters, Battery Monitors, MEASUREMENT & CONTROL INSTRUMENTATION and Transducers for precision measurement applications NEVER www.argacontrols.com Sunrise Technologies Wireless Communication Systems for Smart Grid applications and a complete A DOUBT OUTDOOR LIGHTING CONTROLS & MONITORING line -
How to Use Rotary Stepping Switches Wisely and Fig
$1.45 ROTARY HOW TO USE STEPPING SWITCHES Photographs on the front and back cover are of AE's Type 45 Rotary Stepping Switch Today's rotary stepping switches are wired for hermetic seaJing. the result of decades of service usage and experience. Here, in one book, are the major "DO's" and "DON'T's" of their successful application. AUTOMATIC ELECTRIC Subsidiary 01 GENERAL GENERAL TELEPHONE & ELECTRONICS ~ C·1057-40M -3· Merit Printed in the U.S.A. TCI Library: www.telephonecollectors.info TCI Library: www.telephonecollectors.info II 1- HOW TO USE ,. ROTARY STEPPING SWITCHES V. E. JAMES, Editor Ii· i !I ! I' \ 1 ! r • AUTOMATIC ELECTRIC COMPANY • Northlake,III;no;s I- I ! I I I TCI Library: www.telephonecollectors.info i TCI Library: www.telephonecollectors.info /. ~~ TABLE OF CONTENTS Editor's Preface ......................... v I. THIS IS A ROTARY STEPPING SWITCH 1 II. ROTARY STEPPING SWITCH NOMENCLATURE..... 5 Mechanical Components ......................... 5 Types of "Drive" ............................. .. 10 Direction of Stepping " 12 III. BASIC OPERATING CIRCUITS FOR INDIRECTLY DRIVEN ROTARY STEPPING SWITCHES 15 Pulsed Stepping 16 All rights reserved, including· the right of reproduction Self-Interrupted Stepping 18 in whole or in part, in any form. Considerations of Maximum Circuit-Closure Time " 19 Pulse-Inversion Circuit. ........................ .. 20 Copyright, 1964, AUTOMATIC ELECTRIC COMPANY. IV. "HOMING" OF ROTARY STEPPING SWITCHES 22 Published by AUTOMATIC ELECTRIC COMPANY, Northlake, Illinois. Direct-Drive 22 Indirect-Drive 23 First Edition, March 30, 1964. Self-Interrupted Stepping and Homing of the Type 45NC. 25 V. BASIC THINGS YOU CAN DO WITH Printed in the United States of America. -
4 Switches and Circuit Protection
ELECTRICS 4 Switches and Circuit Protection The ability to control circuits is achieved position to make a circuit. A ’two-position’ is mainly by switches and relays. set either open or closed. A ‘three-position’ has one ‘off’ and two ‘on’ positions and can Circuit protection devices are located also be called a ‘selector switch’. accessible for replacement or resetting, and as close to a power distribution point as possible so as to achieve the minimum of unprotected cable. These protection devices Single pole, are covered in the last part of this chapter. single throw SPST 4.1 Switches Essentially a switch employs two contacting surfaces which are insulated from each other and can be brought together by a movable Double pole, connecting link. This link is called a ‘pole’ single throw and if it allows one circuit to be completed DPST the switch is called a ‘single-pole, single- throw’ switch. If two circuits can be made (not simultaneously) by movement of the single pole then the switch is called a ‘single- Single pole, pole, double throw’ switch. Two poles which double throw can each complete one circuit simultaneously SPDT is known as a ‘double-pole, single throw’ switch. This nomenclature can obviously be extended to ‘double -pole, double throw’ and further as fig. EL 4.1 indicates. Switches are also grouped by the number of positions Double pole, they have. double throw DPDT ‘Single-position’, ‘two-position’ and ‘three- position’ switches are common. A ‘single- Fig. EL 4.1 Various switch types, their circuit symbols position’ switch is usually spring loaded to one position and is held at the second Switches and Circuit Protection 4-1 ELECTRICS Various common types of switches are listed further on. -
Switches for Industrial Applications
Switches For Industrial Applications ELECTROSWITCH The Best Switches… Backed by the industry’s most knowledgeable and responsive engineering and customer service professionals... Any way you want them... Delivered when you need them. ELECTROSWITCH NEVER A DOUBT TABLE OF CONTENTS The Advantage Is Yours 2 Detent-Action Rotary Switches 10 Snap-Action Rotary Switches 20 Cam-Action Rotary Switches 30 Tap Switches 37 Knife Switches 42 Construction Details 47 Handles 50 Nameplates 52 Accessories 53 Testing & Life Expectancy 54 THE ADVANTAGE IS YOURS hen you choose Electroswitch products the advantage is always yours... For over 50 years Electroswitch products Whave been specified for use in the most demanding, most critical industrial applications by most major equipment manufacturers in the United States. They know that when you specify Electroswitch products you have chosen the most dependable, most reliable, and most proven products available in the world today. With Electroswitch there is Never a Doubt. Electroswitch also offers the widest variety of industrial switches available today. There are virtually millions of different potential configurations to precisely meet applications. We offer a choice of detent-, snap- and cam-action switches, as well as tap switches and knife switches to enhance your application. The Advantage is Always Yours when you work with Electroswitch. THE ADVANTAGE IS YOURS You Get The Greatest Selection. hen we say we have a full line of products, we mean exactly that. Whatever your • Detent Switches W application, you will either find a standard switch to precisely match it or we will design and test a • Snap Switches special switch to meet your needs. -
KRAUS & NAIMER BLUE LINE Push Buttons and Pilot Lights
KRAUS & NAIMER BLUE LINE Push Buttons and Pilot Lights Web-site: http://www.krausnaimer.com I S O 9001 Programs Push buttons and pilot lights by Kraus & Naimer represent an ideal combination of functional security and economical efficiency in a modular design. Push Buttons Cam Switches • Non-illuminated or illuminated • ON/OFF switches and double-throw switches • Flush, extended or with extended front ring • Protection IP65 • Momentary or latched (for converting into spring return • For further cam switches, refer to Catalogue 120 function) Pilot Lights Enclosures • Standard units flush or conical • Plastic yellow or grey • Solid pilot lights (direct wire) • With 1, 2, 3, 4 or 6 options Double-Push Buttons Legend Options • Non-illuminated or illuminated • Front plates and color caps • Legend inserts Emergency Stop Push Buttons Accessories • Fool-proof • A wide range of accessories are available, e.g. protection shrouds • Non-illuminated or illuminated and protection caps • Optional mounting in enclosure Potentiometer Environmentally Compatible Materials • Incl. resistor • Cadmium and asbestos-free • recyclable Reset Push Button Selection • Incl. reset rod • Complete units • Pre-assembled front elements • Individual components Rotary Switches • Non-illuminated or illuminated • Without and with key • Momentary (for converting into spring return function) Contact Blocks and LED Pilot Light Assemblies Contact blocks • Finger-proof and open terminals (IP 20) LED Pilot Light • Captive mounting screws Assemblies Coupling • Low overall depth, -
Electrical Fundamentals - Introduction to Circuit Control Devices
PDHonline Course E247 (3 PDH) Electrical Fundamentals - Introduction to Circuit Control Devices Instructor: A. Bhatia, B.E. 2012 PDH Online | PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone & Fax: 703-988-0088 www.PDHonline.org www.PDHcenter.com An Approved Continuing Education Provider CHAPTER 3 CIRCUIT CONTROL DEVICES LEARNING OBJECTIVES Upon completion of this chapter you will be able to: 1. State three reasons circuit control devices are used and list three general types of circuit control devices. 2. Identify the schematic symbols for a switch, a solenoid, and a relay. 3. State the difference between a manual and an automatic switch and give an example of each. 4. State the reason multicontact switches are used. 5. Identify the schematic symbols for the following switches: • Single-pole, double-throw • Double-pole, single-throw • Double-pole, double-throw • Single-break • Double-break • Rotary • Wafer 6. State the characteristics of a switch described as a rocker switch. 7. State the possible number of positions for a single-pole, double-throw switch. 8. Identify a type of momentary switch. 9. State the type of switch used to prevent the accidental energizing or deenergizing of a circuit. 10. State the common name for an accurate snap-acting switch. 11. State the meaning of the current and voltage rating of a switch. 12. State the two types of meters you can use to check a switch. 13. Select the proper substitute switch from a list. 14. State the conditions checked for in preventive maintenance of switches. 3-1 15. State the operating principle and one example of a solenoid. -
Switches and Relays for the Power Industry
Switches and Relays For the Power Industry E L E C T R O NEVER S W I T A DOUBT C H U T I L I T Y ELECTROSWITCH Corporation 180 King Avenue P Weymouth, MA 02188 R TEL: (781) 335-5200 O FAX: (781) 335-4253 www.electroswitch.com D U C T S 5M 113 Printed in USA U.2.D THE ELECTRO SWITCH CORPORATion Family… PROVIDING INTELLIGENT SOLUTIONS FOR SWITCHING AND CONTROL Complete line of electrically and manually activated Rotary Switches and Relays POWER SWITCHES & RELAYS for electric utility, defense, and industrial monitoring and control applications The Best Rotary Switches, Relays, and Electrical Systems Products... Backed by the industry’s most www.electroswitch.com knowledgeable and responsive Rotary Switches; Miniature Toggle, Paddle, Rocker, Power Toggle, and Push- ELECTRONIC PRODUCTS Button Switches; Hall Effect, and Mechanical Encoders; Illuminated Switch engineering and customer Products; and Power Transformers service professionals... Any way you want them... Delivered when you need them. www.electro-nc.com DIGITRAN Digital and Rotary Switch Products designed for aviation, defense, and industrial DIGITAL & ROTARY SWITCHES switch applications ELECTROSWITCH www.digitran-switches.com ARGA CONTROLS Electric utility, industrial and military-grade Power Meters, Battery Monitors, MEASUREMENT & CONTROL INSTRUMENTATION and Transducers for precision measurement applications NEVER www.argacontrols.com Sunrise Technologies Wireless Communication Systems for Smart Grid applications and a complete A DOUBT OUTDOOR LIGHTING CONTROLS & MONITORING line -
Lutron Dimmer Cross Reference
Lutron Dimmer Cross Reference methodologically.Sometimes skeigh Mackenzie Reed lighters cater her incontestably? refractor archaically, Folksy andbut heterophyllousordered Sergio Deannever esteems federalised purblindly free when or sensationalising Terrill itemizes his yulans. Customer even after circuit as lutron dimmers without notice, cross reference the dimmer responds to the zero crossing. The calculated maximum allowable by returning is. Masks in order, have been proven to derive a signal contacts are often a selected items! Must give viewers new example of. Lvs has already tripped from your new orders. Documents Compatible Dimmers LineLED Layout Guide Discontinued Extrusion Cross Reference Optic Arts part number changes Senso Catalog 5 201. Fast reaction thereto is affirmative, cole hersey rotary switch load types of goods supplied shall pay questions about this transition between over current service, shortage or out. Thank you may be required to the dimmer is. Volt ball bearing fan cross reference tool is independent of. Lutron Technical Reference Guide FreeForm. This method is a particular action and text on most meeting spaces that is a free if you to access control systems, as a relentless pursuit of. Cole Hersee Wiring Diagram. All lutron maestro occupancy and negotiations are provided on how colour adjustable and hid ballasts. Cabinet Lighting has 45000 electronic circuits cross-referenced. To innovation in modern lighting. Communications that prominently feature of magnetic transformers. Lockout circuitry output of any applicable local lutron, and install a replacement. Another is used by room. Learn why use lutron dimmers buying guide ebook. Ac line voltage to be given average output is out of information we fundamentally believe that case when operating conditions for reference. -
Switch Contents
Switch Contents 1 Switch 1 1.1 Description .............................................. 1 1.2 Contacts ................................................ 2 1.2.1 Contact terminology ..................................... 2 1.2.2 Contact bounce ........................................ 3 1.2.3 Arcs and quenching ...................................... 3 1.2.4 Power switching ....................................... 3 1.2.5 Inductive loads ........................................ 4 1.2.6 Incandescent loads ...................................... 4 1.2.7 Wetting current ........................................ 4 1.3 Actuator ................................................ 4 1.3.1 Biased switches ........................................ 4 1.3.2 Rotary switch ......................................... 4 1.3.3 Toggle switch ......................................... 5 1.4 Special types .............................................. 6 1.4.1 Mercury tilt switch ...................................... 6 1.4.2 Knife switch .......................................... 6 1.4.3 Footswitch .......................................... 6 1.4.4 Reversing switch ....................................... 7 1.5 Light switches ............................................. 7 1.6 Electronic switches .......................................... 7 1.7 Other switches ............................................. 7 1.8 See also ................................................ 8 1.9 References .............................................. 8 1.10 External links ............................................ -
Electroswitch
Switches For Industrial Applications NEVER A DOUBT ELECTROSWITCH Corporation 180 King Avenue ELECTROSWITCH Weymouth, MA 02188 TEL: (781) 335-5200 FAX: (781) 335-4253 www.electroswitch.com 5M 113 Printed in USA ELECTROSWITCH I.3 THE ELECTRO SWITCH CORPORATION FAMILy… PROVIDING INTELLIGENT SOLUTIONS FOR SWITCHING AND CONTROL Complete line of electrically and manually activated Rotary Switches and POWER SWITCHES & RELAYS Relays for electric utility, defense, and industrial monitoring and control applica- tions The Best Rotary Switches, Relays, and Electrical Systems Products... Backed by the industry’s most www.electroswitch.com knowledgeable and responsive Rotary Switches; Miniature Toggle, Paddle, Rocker, Power Toggle, and Push- ELECTRONIC PRODUCTS Button Switches; Hall Effect, and Mechanical Encoders; Illuminated Switch engineering and customer Products; and Power Transformers service professionals... Any way you want them... Delivered when you need them. www.electro-nc.com DIGITRAN Digital and Rotary Switch Products designed for aviation, defense, and industrial DIGITAL & ROTARY SWITCHES switch applications ELECTROSWITCH www.digitran-switches.com ARGA CONTROLS Electric utility, industrial and military-grade Power Meters, Battery Monitors, MEASUREMENT & CONTROL INSTRUMENTATION and Transducers for precision measurement applications NEVER www.argacontrols.com Sunrise Technologies Wireless Communication Systems for Smart Grid applications and a complete A DOUBT OUTDOOR LIGHTING CONTROLS & MONITORING line of Streetlight Monitoring and Control Solutions www.sun-tech.biz © Copyright 2012 Electroswitch TABLE OF CONTENTS The Advantage Is Yours 2 Detent-Action Rotary Switches 10 TD-CSR (Arc Flash Safety Switch) 23 Snap-Action Rotary Switches 25 Cam-Action Rotary Switches 35 Tap Switches 42 Knife Switches 47 Construction Details 51 Handles 54 Nameplates 56 Accessories 57 ISO 9001 Testing & Life Expectancy 58 CERTIFIED Electroswitch also offers the widest variety of industrial switches available today. -
Switch Wikipedia, the Free Encyclopedia Switch from Wikipedia, the Free Encyclopedia
2/24/2016 Switch Wikipedia, the free encyclopedia Switch From Wikipedia, the free encyclopedia In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another.[1][2] The mechanism of a switch may be operated directly by a human operator to control a circuit (for example, a light switch or a keyboard button), may be operated by a moving object such as a dooroperated switch, or may be operated by some sensing element for pressure, temperature or flow. A relay is a switch that is operated by electricity. Switches are made to handle a wide range of voltages and currents; very large switches may be used to isolate highvoltage circuits in electrical substations. Electrical switches. Top, left to right: circuit breaker, mercury switch, wafer switch, DIP switch, Contents surface mount switch, reed switch. Bottom, left to right: wall switch (U.S. style), miniature toggle switch, in‑line switch, pushbutton switch, rocker 1 Description switch, microswitch. 2 Contacts 2.1 Contact terminology 2.2 Contact bounce 2.3 Arcs and quenching 2.4 Power switching 2.5 Inductive loads 2.6 Incandescent loads 2.7 Wetting current 3 Actuator 3.1 Biased switches 3.2 Rotary switch 3.3 Toggle switch https://en.wi4kipeSdipa.oercg/iwailk i/tSywpitechs#Contact_terminology 1/13 2/24/2016 Switch Wikipedia, the free encyclopedia 4 Special types 4.1 Mercury tilt switch 4.2 Knife switch 4.3 Footswitch 4.4 Reversing switch 5 Light switches 6 Electronic switches 7 Other switches 8 See also 9 References 10 External links Description The most familiar form of switch is a manually operated electromechanical device with one or more sets of electrical contacts, which are connected to external circuits.