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IEC 60420 Ed. 2.0 Edition 10/1990
High-voltage alternating current switch-fuse combinations
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  • 268.3 / copy
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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.

Status

Standard - Superseded

Origin

Technical Committee :
17A : Switching devices

Implementation

start of the vote on the project      date of ratification (dor)   
end of the vote on the project      date of anouncement (doa)   
start of the vote on the final project      date of publication (dop)   
end of the vote on the final project      date of withdrawal (dow)   


Publication Official Journal
of the Grand-Duchy of Luxembourg
Reference

Relations

Evolutions
IEC 62271-105 Ed. 1.0

International Classification for Standards (ICS codes) :

29.130.10 : High voltage switchgear and controlgear

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