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Homepage>IEC Standards>IEC 60947-8:2021 - Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines
download between 0-24 hoursReleased: 2021-07-28
IEC 60947-8:2021 - Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines

IEC 60947-8:2021

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

Appareillage à basse tension - Partie 8: Unités de commande pour la protection thermique incorporée (CTP) aux machines électriques tournantes

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Standard number:IEC 60947-8:2021
Released:2021-07-28
Language:English/French - Bilingual
DESCRIPTION

IEC 60947-8:2021

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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