IS/IEC 62271 : Part 207 : 2023 High-Voltage Switchgear and Controlgear - Part 207 Seismic Qualification for Gas-Insulated Switchgear Assemblies, Metal Enclosed and Solid-Insulation Enclosed Switchgear for Rated Voltages Above 1 kV

ICS 29.130.10

ETD 08

NATIONAL FOREWORD

This Indian Standard (Second Revision) which is identical to IEC 62271-207 : 2023 'High-voltage switchgear and controlgear - Part 207: Seismic qualification for gas-insulated switchgear assemblies, metal enclosed and solid-insulation enclosed switchgear for rated voltages above 1 kV' issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the High Voltage Switchgear and Controlgear Sectional Committee and approval of the Electrotechnical Division Council.

This standard is published in various parts. Other parts in this series are:

Part 1 High-voltage switchgear and controlgear: Part 1 Common specifications for alternating current switchgear and controlgear

Part 100 High-voltage switchgear and controlgear: Part 100 Alternating-current circuit breakers (first revision)

Part 101 High-voltage switchgear and controlgear: Part 101 Synthetic testing (first revision)

Part 102 High-voltage switchgear and controlgear: Part 102 Alternating current disconnectors and earthing switches (first revision)

Part 103 High-voltage switchgear and controlgear: Part 103 Alternating current switches for rated voltage above 1kV up to and including 52 kV (first revision)

Part 104 High-voltage switchgear and controlgear: Part 104 Alternating current switches for rated voltages higher than 52 kV (first revision)

Part 105 High-voltage switchgear and controlgear: Part 105 Alternating current switch-fuse combinations for rated voltages above 1 kv up to and including 52 kv (second revision)

Part 106 Low-voltage switchgear and controlgear: Part 106 Alternating current contractors, contractor-based controllers and motorstarters (first revision)

Part 109 High-voltage switchgear and controlgear: Part 109 Alternating-current series capacitor by-pass switches (first revision)

Part 110 High-voltage switchgear and controlgear: Part 110 Inductive load switching

Part 111 High-voltage switchgear and controlgear: Part 111 Automatic circuit reclosers for alternating current systems up to and including 38 kV (first revision)

Part 201 High-voltage switchgear and controlgear: Part 201 ac solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV (first revision)

Part 202 High-voltage switchgear and controlgear: Part 202 High-voltage/Low-voltage prefabricated substation

Part 203 High-voltage switchgear and controlgear: Part 203 a.c. gas-insulated metalenclosed switchgear and rated voltages above 52 kV (second revision)

Part 300 High-voltage switchgear and controlgear: Part 300 Seismic qualification of alternating current circuit-breakers

Part 301 High-voltage switchgear and controlgear: Part 301 Dimensional standardisation of high-voltage terminals

This standard was first published in 2011 and was identical to IEC 62271-207: 2007. It was later revised in 2018 identical to IEC 62271-207: 2012. This revision has now been brought out to align this standard with the latest international practices.

This edition includes the following significant technical changes with respect to the previous edition:

a) Modification of the minimum voltage rating from 52 kV to above 1 kV in order to include medium voltage;

b) Various enhancements of test procedures;

c) Addition of minimum contents for seismic qualification reports; and

d) Scope extended to cover DC GIS including and above 100 kV.

The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard'; and

b) Comma (,) has been used as a decimal marker, while in Indian Standards the current practice is to use a point (.) as the decimal marker.