BS EN 60664-5:2007 - Insulation coordination for equipment within low-voltage systems. Comprehensive method for determining clearances and creepage distances equal to or less than 2 mm

BS EN 60664-5:2007

Insulation coordination for equipment within low-voltage systems. Comprehensive method for determining clearances and creepage distances equal to or less than 2 mm

Status : Current   Published : December 2007

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Specifies the dimensioning of clearances and creepage distances for spacings equal to or less than 2 mm for printed wiring board and equivalent constructions, where the clearance and the creepage distance are identical and are along the surface of solid insulation. The dimensioning in this standard is more precise than that provided by IEC 60664-1. However, if the precision provided by this standard is not required, IEC 60664-1 may be applied instead. This standard is based on the following criteria for dimensioning: - minimum clearances independent of the micro-environment; - minimum creepage distances for pollution degrees 1, 2 and 3 to avoid failure due to tracking; - minimum creepage distances to avoid flashover across the insulating surface. A test method is specified for allocating unclassified insulating material to the relevant water adsorption group. The following major technical changes are: - Amendment of Japanese mains conditions with regard to the rated impulse voltages, the rationalized voltages and the nominal voltages of supply systems for different modes of overvoltage control. - Amendment of dimensioning of clearances smaller than 0,01 mm. Alignment of the table and the corresponding formula regarding test voltages for verifying clearances at different altitudes. - Amendment of interpolation of the creepage distance values for functional insulation. - Revision of the former Clause 4 "Tests and measurements" (now Clause 6) to achieve a more detailed description of the tests and their purpose, the test equipment and possible alternatives. Has the status of a basic safety publication in accordance with IEC Guide 104.




Standard NumberBS EN 60664-5:2007
TitleInsulation coordination for equipment within low-voltage systems. Comprehensive method for determining clearances and creepage distances equal to or less than 2 mm
StatusCurrent
Publication Date31 December 2007
Normative References(Required to achieve compliance to this standard)IEC 60721-3-7:1995, IEC 60721-3-3:1994, IEC 60364-5-51:2005, IEC 60664-1:2007, IEC 60721-3-9:1993
Informative References(Provided for Information)IEC 60529:1989/AMD 1:1999, EN 60529:1991/AMD 1:2000, IEC 60529:1989, EN 60529:1991
ReplacesBS EN 60664-5:2003
International RelationshipsEN 60664-5 (IEC 60664-5:2007),EN 61951-1 (IEC 61951-1:2003),IEC 60664-5:2007,IEC 61951-1:2003
Draft Superseded By03/103400 DC06/30151798 DC
DescriptorsElectrical equipment, Printed-circuit boards, Coordination, Humidity, Solid electrical insulating materials, Leakage paths, Electrical insulation, Measurement, Clearance distances, Electrical testing, Electrical insulating materials, Low-voltage equipment, Clearances
ICS29.080.30
Title in FrenchCoordination de l'isolement des matériels dans les systèmes (réseaux) à basse tension. Méthode détaillée de détermination des distances d'isolement dans l'air et des lignes de fuite inférieures ou égales à 2 mm
Title in GermanIsolationskoordination für elektrische Betriebsmittel in Niederspannungsanlagen. Ein umfassendes Verfahren zur Bemessung der Luft- und Kriechstrecken für Abstände gleich oder unter 2 mm
CommitteeGEL/109
ISBN978 0 580 57175 6
PublisherBSI
FormatA4
DeliveryYes
Pages48
File Size856 KB
Price£240.00


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