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  • BSI
    BS EN IEC 60664-1:2020 Insulation coordination for equipment within low-voltage supply systems - Principles, requirements and tests
    Edition: 2020
    $553.89
    / user per year

Description of BS EN IEC 60664-1:2020 2020

This part of IEC 60664 deals with insulation coordination for equipment having a rated voltage up to AC 1 000 V or DC 1 500 V connected to low-voltage supply systems.

This document applies to frequencies up to 30 kHz.

NOTE 1 Requirements for insulation coordination for equipment within low-voltage supply systems with rated frequencies above 30 kHz are given in IEC 60664-4.

NOTE 2 Higher voltages can exist in internal circuits of the equipment.

It applies to equipment for use up to 2 000 m above sea level and provides guidance for use at higher altitudes (See 5.2.3.4).

It provides requirements for technical committees to determine clearances, creepage distances and criteria for solid insulation. It includes methods of electrical testing with respect to insulation coordination.

The minimum clearances specified in this document do not apply where ionized gases are present. Special requirements for such situations can be specified at the discretion of the relevant technical committee.

This document does not deal with distances:

  • through liquid insulation;

  • through gases other than air;

  • through compressed air.

This basic safety publication focusing on safety essential requirements is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51.

One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications.

However, in case of missing specified values for clearances, creepage distances and requirements for solid insulation in the relevant product standards, or even missing standards, this document applies.



Standard NumberBS EN IEC 60664-1:2020
TitleInsulation coordination for equipment within low-voltage supply systems - Principles, requirements and tests
StatusRevision Underway
Publication Date2020-12-16
ReplacesBS EN 60664-1:2007
Identical National Standard OfIEC 60664-1:2020/COR1:2020, EN IEC 60664-1:2020/AC:2020-12, IEC 60664-1:2020/COR1:2020
CorrectsBS EN IEC 60664-1:2020
DescriptorsLow-voltage equipment, Electrical insulating materials, Clearances, Rated voltage, Dimensions, Electrical equipment, Electrical testing, Leakage paths, Electrical insulation, Overvoltage, Withstand voltage, Coordination, Impulse voltages, Electrical installations, Clearance distances, Solid electrical insulating materials
ICS29.080.30 Insulation systems
CommitteeGEL/109
ISBN978 0 539 15877 9
PublisherBSI
Pages88



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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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