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BS EN IEC 62271-103:2023

BS EN IEC 62271-103:2023

$215.11

High-voltage switchgear and controlgear – Alternating current switches for rated voltages above 1 kV up to and including 52 kV

Published By Publication Date Number of Pages
BSI 2023 94
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IEC 62271-103:2021 is applicable to three-phase, alternating current switches and switch-disconnectors for their switching function, having making and breaking current ratings, for indoor and outdoor installations, for rated voltages above 1 kV up to and including 52 kV and for rated frequencies from 162/3 Hz up to and including 60 Hz. This document is also applicable to single-pole switches used on three-phase systems. This second edition cancels and replaces the first edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – this document has been aligned with IEC 62271-1:2017 and IEC 62271-102:2018; – clarifications regarding the behaviour of the switch during breaking tests regarding current interruption and restrikes have been added; – conditions of the switch after making and breaking tests have been clarified; – a new informative Annex B intended to provide guidance for the calculation of Ief1 and Ief2 has been added; – new rules for the combination of 50 Hz and 60 Hz switching tests have been defined and a new table (Table 7) has been added; – tests with specified TRV have been modified to be in accordance with the practice described in IEC 62271-100; – the behaviour of the switch during breaking tests has been clarified and boundaries for restrike allowance have been defined; – explanations for short-circuit making tests have been added; – vacuum integrity check after mechanical operations has been defined; – all test voltages for single-phase capacitive testing have been grouped under 7.101.7.3.2 and have been confirmed by simulation and calculation.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 Annex ZB (informative)A-deviations
7 English
CONTENTS
13 FOREWORD
15 1 Scope
2 Normative references
16 3 Terms and definitions
3.1 General terms and definitions
3.2 Assemblies of switchgear and controlgear
3.3 Parts of assemblies
17 3.4 Switching devices
3.5 Parts of switchgear and controlgear
18 3.6 Operational characteristics of switchgear and controlgear
3.7 Characteristic quantities
22 3.8 Index of definitions
23 4 Normal and special service conditions
5 Ratings
5.1 General
5.2 Rated voltage (Ur)
5.3 Rated insulation level (Ud, Up, Us)
5.4 Rated frequency (fr)
5.5 Rated continuous current (Ir)
24 5.6 Rated short-time withstand current (Ik)
5.7 Rated peak withstand current (Ip)
5.8 Rated duration of short-circuit (tk)
5.9 Rated supply voltage of auxiliary circuits and control circuits (Ua)
5.10 Rated supply frequency of auxiliary and control circuits
5.11 Rated pressure of compressed gas supply for controlled pressure systems
5.101 Rated mainly active load-breaking current (Iload)
5.102 Rated closed-loop breaking current (Iloop)
5.103 Rated parallel power transformer breaking current for special purpose switches (Ipptr)
5.104 Rated cable-charging breaking current (Icc)
5.105 Rated line-charging breaking current (Ilc)
25 5.106 Rated single capacitor bank breaking current for special purpose switches (Isb)
5.107 Rated back-to-back capacitor bank breaking current for special purpose switches (Ibb)
5.108 Rated back-to-back capacitor bank inrush making current for special purpose switches (Iin)
5.109 Rated earth fault breaking current (Ief1)
5.110 Rated cable- and line-charging breaking current under earth fault conditions (Ief2)
5.111 Rated motor breaking current for special purpose switches (Imot)
26 5.112 Rated short-circuit making current (Ima)
5.113 Types of switches and their associated ratings
5.113.1 Types of switches
5.113.2 Rated making and breaking currents for general purpose switches
27 5.113.3 Rated making and breaking currents for limited purpose switches
5.113.4 Rated making and breaking currents for special purpose switches
5.113.5 Ratings for switches backed by fuses
Tables
Table 1 ā€“ Preferred values of rated line- and cable-charging breaking currents for general purpose switches
28 5.114 Mechanical endurance class of switches
5.114.1 Class M1 switch
5.114.2 Class M2 switch
5.115 Electrical endurance class of general purpose switches
5.115.1 Class E1 general purpose switch
5.115.2 Class E2 general purpose switch
5.115.3 Class E3 general purpose switch
5.116 Capacitive breaking capability class of switches
5.116.1 General
5.116.2 Class C1 switch
29 5.116.3 Class C2 switch
6 Design and construction
6.1 Requirements for liquids in switchgear and controlgear
6.2 Requirements for gases in switchgear and controlgear
6.3 Earthing of switchgear and controlgear
6.4 Auxiliary and control equipment and circuits
6.5 Dependent power operation
6.6 Stored energy operation
6.7 Independent unlatched operation (independent manual or power operation)
6.8 Manually operated actuators
6.9 Operation of releases
6.10 Pressure/level indication
30 6.11 Nameplates
6.11.1 General
6.11.2 Application
Table 2 ā€“ Nameplate information
32 6.12 Locking devices
6.13 Position indication
6.14 Degrees of protection provided by enclosures
6.15 Creepage distances for outdoor insulators
6.16 Gas and vacuum tightness
6.17 Tightness for liquid systems
6.18 Fire hazard (flammability)
33 6.19 Electromagnetic compatibility (EMC)
6.20 X-ray emission
6.21 Corrosion
6.22 Filling levels for insulation, switching and/or operation
6.101 Making and breaking operations
6.102 Requirements for switch-disconnectors
6.103 Mechanical strength
6.104 Securing the position
6.105 Indication and signalling of position
6.105.1 General requirements
34 6.105.2 Indication of position
Figures
Figure 1 ā€“ Position-indicating/signalling device(s)
35 6.105.3 Signalling of position by auxiliary contacts
6.106 No-load transformer breaking
7 Type tests
7.1 General
7.1.1 Basics
36 7.1.2 Information for identification of test objects
7.1.3 Information to be included in the type-test reports
7.2 Dielectric tests
7.2.9 Artificial pollution tests for outdoor insulators
7.2.10 Partial discharge tests
7.3 Radio interference voltage (RIV) test
37 7.4 Resistance measurement
7.5 Continuous current tests
7.6 Short-time withstand current and peak withstand current tests
7.6.1 General
7.6.2 Arrangement of the equipment and of the test circuit
7.6.3 Test current and duration
7.6.4 Conditions of the test object after test
7.7 Verification of the protection
7.8 Tightness tests
7.9 Electromagnetic compatibility (EMC) tests
7.10 Additional tests on auxiliary and control circuits
7.10.1 General
7.10.2 Functional tests
38 7.10.3 Verification of the operational characteristics of auxiliary contacts
7.10.4 Environmental tests
7.10.5 Dielectric test
7.11 X-radiation test for vacuum interrupters
7.101 Making and breaking tests
7.101.1 Test duties for general purpose switches
39 Table 3 ā€“ Test duties for general purpose switches ā€“Test duties for three-phase tests on three-pole operated, general purpose switches
Table 4 ā€“ Test duties for general purpose switches ā€“Single-phase tests on three-pole general purpose switches operated pole-after-poleand single-pole general purpose switches applied on three-phase systems
41 7.101.2 Test duties for limited purpose switches
7.101.3 Test duties for special purpose switches
Table 5 ā€“ Test duties for special purpose switches ā€“Three-phase tests on three-pole operated switches
42 7.101.4 Arrangement of the switch for tests
Table 6 ā€“ Test duties for special purpose switches ā€“Single-phase tests on three-pole switches operated pole-after-poleand single-pole switches applied on three-phase systems
43 7.101.5 Earthing of test circuit and switch
7.101.6 Test parameters
44 Table 7 ā€“ Summary of the conditions for combining tests and alternative procedures
46 7.101.7 Test circuits
47 Figure 2 ā€“ Three-phase test circuit for mainly active load current switchingfor test duty TDload
48 Figure 3 ā€“ Single-phase test circuit for mainlyactive load current switching for test duty TDload
Table 8 ā€“ Supply circuit TRV parameters for mainly active load current breaking testsa
50 Figure 4 ā€“ Three-phase test circuit for distribution line closed-loop andparallel transformer current switching test for test duties TDloop and TDpptr
Figure 5 ā€“ Single-phase test circuit for distribution line closed-loop and parallel transformer current switching test, for test duties TDloop and TDpptr
51 Table 9 ā€“ TRV parameters for distribution line closed loop breaking tests
52 Table 10 ā€“ TRV parameters for parallel power transformer breaking current tests
56 Figure 6 ā€“ General test circuit for three- and single-phase capacitive switching tests
58 Figure 7 ā€“ Prospective recovery voltage and related specified parameter values for capacitive current breaking tests
Table 11 ā€“ Prospective recovery voltage parameter limitsfor capacitive current breaking tests
59 Figure 8 ā€“ Three-phase test circuit for earth fault breaking current tests, for test duty TDef1
60 Figure 9 ā€“ Three-phase test circuit for cable-charging breaking current tests under earth fault conditions, for test duty TDef2
Figure 10 ā€“ Three-phase test circuit for short-circuit making current test for test duty TDma
61 7.101.8 Behaviour of switch during breaking tests
Figure 11 ā€“ Single-phase test circuit for short-circuit making current test for test duty TDma
62 7.101.9 Condition of switch after breaking tests and short-circuit making tests
7.101.10 Type-test reports
64 7.102 Mechanical and environmental tests
7.102.1 Miscellaneous provisions for mechanical and environmental tests
65 7.102.2 Mechanical operation test at ambient air temperature
66 7.102.3 Low and high temperature tests
67 Figure 12 ā€“ Test sequences for low and high temperature tests
70 7.102.4 Humidity test on auxiliary and control circuits
71 Figure 13 ā€“ Humidity test
72 7.102.5 Operation under severe ice conditions
7.102.6 Tests to verify the proper functioning of the position-indicating device
73 7.103 Common checks after tests
7.103.1 Checking the capability of the switch to carry its rated continuous current
74 7.103.2 Checking the integrity of vacuum in case of a switch using a vacuum interrupter
75 8 Routine tests
8.101 General
8.102 Mechanical operating tests
9 Guide to the selection of switchgear and controlgear (informative)
9.101 General
9.102 Conditions affecting application
76 9.103 Insulation coordination
9.104 Selection of class of switch
9.104.1 General purpose switch
9.104.2 Limited purpose switch
9.104.3 Special purpose switch
9.105 Tests for special applications
10 Information to be given with inquiries, tenders and orders (informative)
10.1 General
77 10.2 Information with inquiries and orders
10.3 Information with tenders
78 11 Transport, storage, installation, operating instructions and maintenance
12 Safety
13 Influence of the product on the environment
79 Annex A (normative) Tolerances on test quantities for type tests
Table A.1 ā€“ Tolerances on test quantities for type tests
81 Annex B (informative) Explanation of the determination for the value of Ief1 and Ief2
B.1 Usage of rating Ief1 and Ief2
B.1.1 General
B.1.2 Isolated neutral system
Figure B.1 ā€“ Earth fault in isolated neutral system
83 B.1.3 High impedance earthed neutral systems
Figure B.2 ā€“ Capacitive current in non-faulty phases of isolated neutral system
84 B.1.4 Resonant earthed neutral systems (Petersen coil)
Figure B.3 ā€“ Earth fault in high impedance earthed neutral system
85 B.1.5 Synthesis
Figure B.4 ā€“ Earth fault in resonant or compensate earthed neutral system
Table B.1 ā€“ Need of ratings Ief1 and Ief2 in non-effectively earthed neutral systems
86 B.2 Calculation of Ief1 and Ief2
B.2.1 General
87 Figure B.5 ā€“ Example of sequence to find and isolate a faulty branch in an overhead network
88 Figure B.6 ā€“ Example of sequence to find and isolate a faulty branch in a cable network
89 B.2.2 Calculation of Ief1
B.2.3 Calculation of Ief2
90 Table B.2 ā€“ Values relating to the examples in Figure B.5 and Figure B.6 for capacitance and capacitive current for cables and overhead lines [6], [10], [11]
Table B.3 ā€“ Values for Ief2
91 Annex C (informative) List of notes concerning certain countries
92 Bibliography

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