IEEE C37.20.4-2013

$46.04

IEEE Standard for Indoor AC Switches (1 kV to 38 kV) for Use in Metal-Enclosed Switchgear

Published By	Publication Date	Number of Pages
IEEE	2013

Guaranteed Safe Checkout

Category: IEEE

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Description

Revision Standard – Active. Indoor ac medium-voltage switches for use in enclosures for application in power circuits at voltages above 1 kV through 38 kV are covered in this standard. Stationary or drawout, manual or power operation, and fused or unfused are included.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C37.20.4-2013 Front Cover
3	Title Page
6	Notice to users Laws and regulations Copyrights Updating of IEEE documents Errata
7	Patents
8	Participants
10	Introduction
11	Contents
13	Important Notice 1. Overview 1.1 Scope
14	2. Normative references
15	3. Definitions 4. Service conditions
16	5. Ratings
17	5.1 Rated maximum voltage (V) or (Ur) 5.2 Rated insulation level: (Ud) or (Up)
18	5.3 Rated power frequency (fr) 5.4 Rated continuous (normal) current and temperature rise
19	5.5 Rated short-time withstand current (Ik)
20	5.6 Rated peak (formerly momentary) withstand current (Ip) 5.7 Rated duration of short circuit (tk) 5.8 Rated supply voltage of closing and opening devices and of auxiliary andcontrol circuits (Ua) 5.9 Rated supply frequency of closing and opening devices and of auxiliary circuits
21	5.10 Rated pressure of compressed gas supply for insulation and/or operation 5.11 Rated filling levels for insulation and/or operation 5.12 Rated electrical operations 5.13 Rated mechanical operations 5.14 Rated load-switching current
22	5.15 Rated fault-making current 5.16 Rated fault-making current for an integral switch and fuse 5.17 Rated cable-charging switching current (optional) 5.18 Rated unloaded transformer switching current (optional) 5.19 Rated direct-acting fuse-tripping current (optional) 6. Tests
23	6.1 Grouping of tests
24	6.2 Dielectric tests
28	6.3 Radio influence voltage test 6.4 Measurement of the resistance of circuits 6.5 Temperature-rise tests
30	6.6 Short-time withstand current and peak withstand current (formerly momentary)tests
31	6.7 Verification of the degrees of protection provided by enclosures 6.8 Tightness tests 6.9 Electromagnetic compatibility tests 6.10 Additional tests on auxiliary and control circuits 6.11 X-Radiation procedure for vacuum interrupters
32	6.12 Mechanical operations tests
33	6.13 Fault-making test
35	6.14 Load-switching current test 6.15 Cable-charging current switching test (optional)
36	6.16 Unloaded-transformer switching test (optional) 6.17 Direct-acting fuse-tripping current test (optional) 6.18 Routine (production)
37	6.19 Conformance test 6.20 Field dielectric tests
38	7. Design and construction 7.1 Requirements for liquids in switchgear 7.2 Requirements gases in switchgear 7.3 Grounding of switch
39	7.4 Auxiliary and control equipment 7.5 Dependent power operation 7.6 Stored energy operation 7.7 Independent manual operation 7.8 Operation of releases 7.9 Low- and high-pressure interlocking and monitoring devices 7.10 Nameplates
40	7.11 Interlocking devices 7.12 Position indication
41	7.13 Degrees of protection by enclosure 7.14 Creepage distance for outdoor insulators 7.15 Gas and vacuum tightness 7.16 Liquid tightness 7.17 Flammability 7.18 Electromagnetic compatibility 7.19 X-ray emissions 7.20 Primary connections
42	7.21 Functional components 7.22 Securing the position 7.23 Auxiliary contacts for signaling, if provided
43	8. Application guide 8.1 General 8.2 Voltage 8.3 Frequency 8.4 Continuous current 8.5 Short-circuit current 8.6 Cable-charging current 8.7 Unloaded transformer switching current capability
44	8.8 Direct-acting fuse trip capabilities 8.9 Unusual service conditions 8.10 Maintenance
45	Annex A (informative) Bibliography