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IEC 60152:2021 (EN-FR)

Designation of phase differences by hour numbers in three-phase AC systems

Standard Details

IEC 60152:2021 specifies methods and rules for the designation of phase difference between two items in a three-phase AC system. The designations are intended to be applied in the technical documentation of industrial installations, equipment, and products, and also on markings of equipment and products.
IEC 60152:2021 cancels and replaces the first edition published in 1963. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the title has been updated to reflect the content of the document;
b) the concept of identifying conductors with hour number has been removed as the concept is considered out of date and other means for identifying conductors exists;
c) definition of hour number (clock number) and phase difference introduced.

General Information

Status : ACTIVE
Standard Type: Main
Document No: IEC 60152:2021 (EN-FR)
Document Year: 2021
Pages: 13
Edition: 2.0
  • Section Volume:
  • TC 3 Information structures and elements, identification and marking principles, documentation and graphical symbols
  • ICS:
  • 29.020 Electrical engineering in general

Life Cycle

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ACTIVE
IEC 60152:2021 (EN-FR)
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