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BS EN 50124-1:2001+A2:2005

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Railway applications. Insulation coordination Basic requirements. Clearances and creepage distances for all electrical and electronic equipment

Available format(s)

Hardcopy , PDF

Superseded date

31-03-2017

Language(s)

English

Published date

31-07-2010

The whole document deals with insulation coordination in railways. It applies to equipment for use in signalling, rolling stock and fixed installations up to 2 000 m above sea level.

Insulation coordination is concerned with the selection, dimensioning and correlation of insulation both within and between items of equipment. In dimensioning insulation, electrical stresses and environmental conditions are taken into account. For the same conditions and stresses these dimensions are the same.

An objective of insulation coordination is to avoid unnecessary overdimensioning of insulation.

This standard specifies:

  • requirements for clearances and creepage distances for equipment;

  • general requirements for tests pertaining to insulation coordination.

The term equipment relates to a section as defined in 1.3.1.3: it may apply to a system, a sub-system, an apparatus, a part of an apparatus, or a physical realization of an equipotential line.

This standard does not deal with:

  • distances through solid or liquid insulation;

  • distances through gases other than air;

  • distances through air not at atmospheric pressure;

  • equipment used under extreme conditions.

Product standards have to align with this generic standard.

However, they may require, with justification, different requirements due to safety and/or reliability reasons, e.g. for signalling, and/or particular operating conditions of the equipment itself, e. g. overhead lines which have to comply to EN 50119.

This standard also gives provisions for dielectric tests (type tests or routine tests) on equipment (see annex B).

NOTE For safety critical systems, specific requirements are needed. These requirements will be resolved in the product specific signalling standard EN 50129 (in preparation).

Committee
GEL/9
DocumentType
Standard
Pages
54
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

Standards Relationship
EN 50124-1:2001/corrigendum May 2010 Identical

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