IEC 60947-8:2003/AMD2:2011

May 2011

International standard Cancelled

Amendment 2 - Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines

Main informations

Collections

International IEC standards

Publication date

May 2011

Number of pages

13 p.

Reference

IEC 60947-8:2003/AMD2:2011

Standard replaced by (1)

IEC 60947-8:2021

July 2021

International standard Current

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

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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