IEEE C37.62-2020

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IEEE Standard for Pad-Mounted Dry Vault, Submersible, and Overhead Fault Interrupters for Alternating Current Systems Up to and Including 38 kV

Published By	Publication Date	Number of Pages
IEEE	2020	98

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Description

New IEEE Standard – Active. Required definitions, ratings, procedures for performing design tests and production tests, and construction requirements for pad-mounted, dry vault, submersible, and overhead fault interrupters for alternating current systems up to and including 38 kV are provided in this standard.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C37.62-2020 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
10	Introduction
11	Contents
14	1. Overview 1.1 Scope 1.2 Purpose 1.3 Word usage
15	2. Normative references
16	3. Definitions, acronyms, and abbreviations 3.1 Definitions
18	4. Normal (usual) and special (unusual) service conditions 4.1 Normal (usual) service conditions 4.2 Special (unusual) service conditions
19	5. Ratings 5.1 Rated maximum voltage (V) or (Ur)
20	5.2 Rated insulation level (Ud), (Up) 5.3 Rated power frequency (fr) 5.4 Rated continuous current (Ir) and temperature rise
21	5.5 Rated short-time withstand current (Ik) 5.6 Rated peak withstand current (Ip) 5.7 Rated duration of short-time withstand current (tk) 5.8 Rated supply voltage of closing and opening devices and of auxiliary and control circuits (Ua) 5.9 Rated supply frequency of closing and opening devices and of auxiliary and control circuits 5.10 Rated pressure of compressed gas supply for insulation and/or operation 5.11 Rated filling levels for insulation and/or operation.
22	5.12 Rated minimum tripping current (I> min) 5.13 Rated symmetrical interrupting current 5.14 Rated symmetrical (fault) making current 5.15 Rated operating sequence 5.16 Rated line-charging and cable-charging interrupting currents
23	6. Design and construction 6.1 Requirements for liquids in switchgear 6.2 Requirements for gases in switchgear 6.3 Grounding provisions
24	6.4 Auxiliary and control equipment 6.5 Dependent power operation 6.6 Stored energy operation 6.7 Independent manual operation 6.8 Manually operated actuators 6.9 Operation of releases
25	6.10 Low- and high-pressure interlocking and monitoring devices 6.11 Nameplate markings
27	6.12 Interlocking devices 6.13 Position indicator 6.14 Degrees of protection provided by enclosures
28	6.15 Creepage distances for outdoor insulators 6.16 Gas and vacuum tightness
29	6.17 Liquid tightness 6.18 Flammability 6.19 Electromagnetic compatibility (EMC) 6.20 X-ray emission 6.21 Enclosure construction—submersible and pad-mounted equipment
30	6.22 Enclosure construction —pad-mounted equipment security 6.23 Conductor terminal sizes 7. Design tests 7.1 General
31	7.2 Test conditions
32	7.3 Insulation (dielectric) tests
36	7.4 Radio interference voltage (RIV) test 7.5 Measurement of the resistance of circuits 7.6 Continuous current tests
38	7.7 Short-time withstand current and peak withstand current tests 7.8 Verification of the protection provided by enclosures 7.9 Tightness tests
39	7.10 Electromagnetic compatibility tests (EMC) 7.11 Additional tests on auxiliary and control circuits 7.12 X-radiation test procedure for vacuum interrupters 7.13 Line-charging current and cable-charging current interruption tests
43	7.14 Making current capability
45	7.15 Rated symmetrical interrupting current tests
56	7.16 Low current tests
57	7.17 Minimum tripping current tests
58	7.18 Partial discharge tests
59	7.19 Surge current test—Series-trip FIs
60	7.20 Time-current tests
61	7.21 Mechanical duty test
62	7.22 Ice loading test
65	7.23 Control electronic elements surge withstand capability (SWC) tests
66	7.24 Condition of FI after each test of 7.13–7.16
67	7.25 Thermal runaway test
68	7.26 Pressure withstand tests 7.27 Submersion test
69	8. Routine (production) tests
70	8.1 Dielectric test on the main circuit; one-minute dry power frequency 8.2 Measurement of the resistance of the main circuit 8.3 Tightness tests
71	8.4 Control, secondary wiring, and accessory device test 8.5 Overcurrent trip calibration 8.6 Partial discharge test 8.7 No-load mechanical operation test
72	9. Additional application and test information 9.1 Field tests on units in-service, including dc withstand tests on cables
73	Annex A (informative) Bibliography
74	Annex B (informative) X/R Ratios B.1 General B.2 Time constant τ and X/R ratio
75	B.3 Asymmetrical fault current
77	Annex C (normative) Method of drawing the envelope of the prospective transient recovery voltage of a circuit and determining the representative parameters C.1 General C.2 Drawing the envelope C.3 Determination of parameters
79	Annex D (informative) Background basis of fault interrupter transient recovery voltage (TRV) values D.1 General D.2 Two parameter TRV
81	D.3 uc (TRV peak)
82	D.4 Rate of rise of recovery voltage (RRRV) D.5 t3 (time to reach uc at the specified RRRV) D.6 Multipliers for TRV values at currents less than the rated symmetrical interrupting current
83	D.7 First-pole-to-clear factor (kpp)
85	Annex E (normative) Tolerances for test values E.1 General E.2 Type test tolerances
88	Annex F (normative) Standard methods for determining the values of a sinusoidal current wave and a power-frequency recovery voltage F.1 General F.2 Currents
93	F.3 Power-frequency recovery voltage
95	Annex G (informative) Basis of derivation of duty factors and standard operating duties G.1 General G.2 Standard operating duty
98	Back cover

Additional information

Standard Title	IEEE Standard for Pad-Mounted Dry Vault, Submersible, and Overhead Fault Interrupters for Alternating Current Systems Up to and Including 38 kV
Published Code	IEEE
Publication Date	2020
Pages Count	98

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IEEE C37.62-2020

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