IEC-60152 Designation of phase differences by hour numbers in three-phase AC systems

IEC-60152 - EDITION 2.0 - CURRENT


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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b) the concept of identifying conductors with hour number has been removed as the concept is considered out of date and other means for identifying conductors exists;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.
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Document Number

IEC 60152 Ed. 2.0 b:2021

Revision Level

EDITION 2.0

Status

Current

Publication Date

July 1, 2021

Committee Number

3