IEC 60947-8:2021
Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines
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.
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.
Look inside
Additional information
| Publication type | International Standard |
|---|---|
| Publication date | 2021-07-28 |
| Edition | 2.0 |
| Available language(s) | English/French, Spanish |
| TC/SC | TC 121/SC 121A - Low-voltage switchgear and controlgearrss |
| ICS | 29.130.20 - Low voltage switchgear and controlgear |
| Stability date | 2024 |
| Pages | 82 |
| File size | 2015 KB |
The following test report forms are related:
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