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CEI EN IEC 60664-1

Insulation coordination for equipment within low-voltage supply systems Part 1: Principles, requirements and tests

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Organization: CEI
Publication Date: 1 February 2021
Status: active
Page Count: 94
ICS Code (Insulation systems): 29.080.30
scope:

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.

Document History

CEI EN IEC 60664-1
February 1, 2021
Insulation coordination for equipment within low-voltage supply systems Part 1: Principles, requirements and tests
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...
April 1, 2008
Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
Questa Norma tratta il coordinamento dell’isolamento delle apparecchiature nei sistemi a bassa tensione. Essa si applica alle apparecchiature utilizzate fino a 2000 m sul livello del mare, con...
January 1, 2004
Coordinamento dell'isolamento per le apparecchiature nei sistemi a bassa tensione - Parte 1: Principi, prescrizioni e prove
Questa Norma tratta il coordinamento dell’isolamento delle apparecchiature negli impianti a bassa tensione. Si applica alle apparecchiature usate fino a 2000 m sul livello del mare, con tensione...

References

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