Standard

IEC 60420:1990 ED2

Oct 1990 Replaced

Corrigendums and amendments are bought separately.

Language English/French

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Abstract

This standard applies to three-pole units for public and industrial distribution systems which are functional assemblies of switches including switch-disconnectors and current-limiting fuses and thus able to interrupt: -any load current up to the rated breaking current of the switch; -any over-current up to the rated short-circuit breaking current of the combination by which automatic interruption is initiated. This standard applies to combinations designed with rated voltages above 1 kV and below 52 kV for use on three-phase alternating current systems of either 50 Hz or 60 Hz.

Document information

Standard from IEC
Published: 15 October 1990
Withdrawn: 22 August 2002
Edition: 2
Version: 1
Document type: IS
Pages
ISBN: 2831818400

ICS 29.130.10
ISO TC TC 17/SC 17A

Product Relations

Replaced by: IEC 62271-105:2002 ED1
Revises: IEC 60420:1973 ED1

IEC 60420:1990 ED2

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