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IEC 60947-8:2021

Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines

Üldinfo
Kehtiv alates 28.07.2021
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puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
28.07.2021
Põhitekst
18.10.2011
Põhitekst
18.05.2011
Muudatus
24.11.2006
Põhitekst
25.09.2006
Muudatus
27.05.2003
Põhitekst
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.
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