IEC 60034-11-2004 Rotating electrical machines - Part 11: Thermal protection

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International Standard IEC 60034-11 has been prepared by IEC technical committee 2: Rotating machinery.
This second edition cancels and replaces the first edition published in 1978. This edition constitutes a technical revision and applies to machines manufactured in accordance with IEC 60034-12.
The main change with respect to the previous edition is the reduction of the two categories of maximum winding temperatures for overloads with slow and rapid variation to one to avoid
confusion.b]Scope[/b]
This part of IEC 60034 specifies requirements relating to the use of thermal protectors and thermal detectors incorporated into the stator windings or placed in other suitable positions in induction machines in order to protect them against serious damage due to thermal overloads. It applies to machines manufactured in accordance with IEC 60034-12 with the voltage limits specified in IEC 60034-12. The protection of bearings and other mechanical parts is not included.
NOTE 1 Although temperature values given in this standard are higher than those specified in IEC 60034-1, they are not in conflict.
NOTE 2 Additional requirements may apply to particular motor types such as those used in household appliances,or for motors used in explosive atmospheres.