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IEC 60947-8 Ed.2.0 Edition 07/2021
Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines
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  • 268.3 / copy
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Abstract

IEC 60947-8:2021 specifies requirements for control units, which control a switching device in response to the PTC thermistors incorporated in rotating electrical machines and the industrial application.
This second edition cancels and replaces the first edition published in 2003, Amendment 1:2006 and Amendment 2:2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
safety aspects related to:
general aspects;
limited energy circuits;
electronic circuits;
alignment to IEC 60947-1:2020;
wire break detection function;
the term detector is replaced by thermistor;
reference to IEC 60738-1-4.

Status

Standard - Active

Origin

Technical Committee :
121A : Low-voltage switchgear and controlgear

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

Relations to older standards
IEC 60947-8 Ed. 1.1
IEC 60947-8 Ed. 1.1
IEC 60947-8 Ed. 1.1
IEC 60947-8 Ed. 1.2
IEC 60947-8 am2 Ed. 1.0
IEC 60947-8 Ed. 1.0
IEC 60947-8 am1 Ed. 1.0
IEC 60947-8 am1 Ed. 1.0
IEC 60947-8 am1 Ed. 1.0

International Classification for Standards (ICS codes) :

29.130.20 : Low voltage switchgear and controlgear

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