Standard

IEC 60947-8:2021 ED2

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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.

Products specifications

  • Standard from IEC
  • Published:
  • Edition: 2
  • Document type: IS
  • Pages
  • Publisher: IEC
  • Distributor: IEC
  • ICS: 29.130.20
  • International TC: TC 121/SC 121A

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