IEC 60034-8:2026 ED4

Rotating electrical machines - Part 8: Terminal markings and direction of rotation IEC 60034-8:2026 ED4

Publication date:   Jun 2, 2026

Scope

CORRECTED VERSION 2026-07

IEC 60034-8:2026 applies to AC and DC machines and specifies:
a) rules for the identification of winding connection points;
b) marking of winding terminals;
c) direction of rotation;
d) relationship between terminal markings and direction of rotation;
e) terminal marking of auxiliary devices;
f) connection diagrams of machines for common applications.
This fourth edition cancels and replaces the third edition published in 2007 and Amendment 1:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) The inclusion of turbine-type synchronous machines in the scope.
The content of the corrigendum 1 (2026-07) has been included in this copy.