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  • BSI
    BS EN IEC 62271-110:2018 High-voltage switchgear and controlgear - Inductive load switching
    Edition: 2018
    $418.55
    / user per year

Description of BS EN IEC 62271-110:2018 2018

This part of IEC 62271 is applicable to AC switching devices designed for indoor or outdoor installation, for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V and applied for inductive current switching. It is applicable to switching devices (including circuit-breakers in accordance with IEC 62271-100) that are used to switch high-voltage motor currents and shunt reactor currents and also to high-voltage contactors used to switch high-voltage motor currents as covered by IEC 62271-106.

Switching unloaded transformers, i.e. breaking transformer magnetizing current, is not considered in this document. The reasons for this are as follows:

  1. Owing to the non-linearity of the transformer core, it is not possible to correctly model the switching of transformer magnetizing current using linear components in a test laboratory. Tests conducted using an available transformer, such as a test transformer, will only be valid for the transformer tested and cannot be representative for other transformers.

  2. As detailed in IEC TR 62271-306, the characteristics of this duty are usually less severe than any other inductive current switching duty. Such a duty may produce severe overvoltages within the transformer winding(s) depending on the re-ignition behaviour of the switching device and transformer winding resonance frequencies.

NOTE 1 The switching of tertiary reactors from the high-voltage side of the transformer is not covered by this document.

NOTE 2 The switching of shunt reactors earthed through neutral reactors is not covered by this document. However, the application of test results according to this document, on the switching of neutral reactor earthed reactors (4-leg reactor scheme), is discussed in IEC TR 62271-306.



Standard NumberBS EN IEC 62271-110:2018
TitleHigh-voltage switchgear and controlgear - Inductive load switching
StatusWithdrawn
Publication Date2018-03-09
Withdrawn Date2023-04-25
ReplacesBS EN 62271-110:2012
Replaced ByBS EN IEC 62271-110:2023
Identical National Standard OfIEC 62271-110:2017, EN IEC 62271-110:2018, IEC 62271-110:2017, IEC 62271-110:2017
DescriptorsElectrical testing, Type testing, Electrical equipment, Electrical protection equipment, Short-circuit currents, Switches, Circuit-breakers, Electric control equipment, Electric current control, Switchgear, Ratings, Rated current, Electric power distribution, High-voltage equipment, Alternating current
ICS29.130.10 High voltage switchgear and controlgear
CommitteePEL/17
ISBN978 0 580 90334 2
PublisherBSI
Pages34

The following editions for this book are also available...

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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