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Full Description

IEC 62271-109:2019 is applicable to AC series capacitor by-pass switches designed for outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 52 kV. It is only applicable to by-pass switches for use in three-phase systems. This document is also applicable to the operating devices of by-pass switches and to their auxiliary equipment. This third edition cancels and replaces the second edition published in 2008 and Amendment 1:2013. This edition constitutes a technical revision. This edition contains the following significant technical changes with respect to the previous edition:
a) the document has been restructured according to edition 2.0 of IEC 62271-1;
b) the rated voltage assignation across the by-pass switch has been aligned to the rule defined in IEC 60143-1;
c) clarification has been given regarding rated continuous current of compensated and uncompensated line;
d) some clarifications have been given following a loss of "suitable precautions";
e) as per Amendment 2 of IEC 62271-100, the section "Rated time quantities" has been moved to Clause 6 under "Time quantities";
f) as per Amendment 2 of IEC 62271-100, the section "Test for static mechanical loads" have been moved to Clause 6 under "Static mechanical loads";
g) additional rules have been introduced for vacuum interrupters during impulse tests;
h) additional clarifications have been given regarding the number of reduced impulses during impulse tests;
i) a wider tolerance on the current damping during by-pass making current test-duty has been introduced.

 

Document History

  1. IEC 62271-109 Ed. 3.0 b:2019

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

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  2. IEC 62271-109 Ed. 2.1 b:2013


    High-voltage switchgear and controlgear - Part 109: Alternating-current series capacitor by-pass switches CONSOLIDATED EDITION

    • Historical Version
  3. IEC 62271-109 Ed. 2.0 b:2008


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

    • Historical Version
  4. IEC 62271-109 Ed. 1.0 b:2006


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

    • Historical Version