BS EN 62271-110:2005 - High-voltage switchgear and controlgear. Inductive load switching

BS EN 62271-110:2005

High-voltage switchgear and controlgear. Inductive load switching

Status : Withdrawn   Published : March 2006 Replaced By : BS EN 62271-110:2009

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Applicable to a.c. circuit-breakers designed for indoor or outdoor installation, for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1000 V and applied for inductive current switching with or without additional short-circuit current breaking duties. The standard is applicable to 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. Switching unloaded transformers, i.e. breaking transformer magnetizing current, is not considered in this standard. The reasons for this are as follows: a) due 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; b) as detailed in the guide for application of IEC 62271-100 and IEC 60694, the characteristics of this duty are usually less severe than any other inductive current switching duty. It should be noted that such a duty may produce severe overvoltages within the transformer winding(s) depending on the circuit-breaker re ignition behaviour and transformer winding resonance frequencies. Short-line faults, out-of-phase current making and breaking and capacitive current switching are not applicable to circuit-breakers applied to switch shunt reactors or motors. These duties are therefore not included in this standard.

Standard NumberBS EN 62271-110:2005
TitleHigh-voltage switchgear and controlgear. Inductive load switching
Publication Date31 March 2006
Withdrawn Date01 April 2012
Normative References(Required to achieve compliance to this standard)EN 62271-100:2001, IEC 62271-100:2001
Informative References(Provided for Information)IEC 60470, EN 60470:2000
Replaced ByBS EN 62271-110:2009
International RelationshipsEN 62271-110:2005,IEC 62271-110:2005,IEC 62560:2011
DescriptorsType testing, Circuit-breakers, Electrical protection equipment, Electric current control, Ratings, Rated current, Alternating current, Electrical equipment, Electrical testing, High-voltage equipment, Short-circuit currents, Switches, Electric control equipment, Electric power distribution, Switchgear
Title in FrenchAppareillage a haute tension. Manoeuvre de charges inductives
Title in GermanHochspannungs-Schaltgeraete und -Schaltanlagen. Schalten induktiver Lasten
ISBN0 580 47970 6
File Size418 KB

*To ask about withdrawn titles contact the
Customer Relations, +44 345 086 9001
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