Standard

IEC 60420:1973 ED1

Jan 1973 Revised

Note: Latest version: IEC 60420:1990 ED2

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Amendment 3 - High-voltage alternating current switch-fuse combinations and fuse-circuit-breaker combinations Revised IEC 60420:1973/AMD3:1978 ED1 Amendment from Publication date: Oct 1978 Pages: 2 Language: English/French Services: Online, Online + Pdf
Open product
Amendment 2 - High-voltage alternating current switch-fuse combinations and fuse-circuit-breaker combinations Revised IEC 60420:1973/AMD2:1977 ED1 Amendment from Publication date: Nov 1977 Pages: 22 Language: English/French Services: Online, Online + Pdf
Open product
Amendment 1 - High-voltage alternating current switch-fuse combinations and fuse-circuit-breaker combinations Revised IEC 60420:1973/AMD1:1975 ED1 Amendment from Publication date: Sep 1975 Pages: 2 Language: English/French Services: Online, Online + Pdf

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.

Products specifications

Standard from IEC
Published: January 1 1973
Withdrawn: November 19 2016
Edition: 1
Document type: IS
Pages
ISBN:

Publisher: IEC
Distributor: IEC
International TC: TC 17/SC 17A

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Revised by: IEC 60420:1990 ED2

IEC 60420:1973 ED1

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IEC 60420:1990 ED2