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  • BSI
    BS EN 50124-1:2001+A2:2005 Railway applications. Insulation coordination - Basic requirements. Clearances and creepage distances for all electrical and electronic equipment
    Edition: 2010
    $497.46
    / user per year

Description of BS EN 50124-1:2001+A2:2005 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).



Standard NumberBS EN 50124-1:2001+A2:2005
TitleRailway applications. Insulation coordination - Basic requirements. Clearances and creepage distances for all electrical and electronic equipment
StatusWithdrawn
Publication Date2010-07-31
Withdrawn Date2017-03-31
Replaced ByBS EN 50124-1:2017
Identical National Standard OfEN 50124-1:2001/corrigendum May 2010
CorrectsBS EN 50124-1:2001
DescriptorsClearance distances, Railway equipment, Leakage paths, Electrical engineering, Electrical equipment, Electronic equipment and components, Railway vehicles, Electrical insulation, Signals
ICS29.280 Electric traction equipment, 29.080.30 Insulation systems, 45.020 Railway engineering in general
CommitteeGEL/9
ISBN978 0 580 71757 4
PublisherBSI
Pages54

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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