IEC 60034-11:2020
Collections
International IEC standards
Publication date
October 2020
Number of pages
25 p.
Reference
IEC 60034-11:2020
IEC 60034-11:2020
October 2020
International standard
Current
Rotating electrical machines - Part 11: Thermal protection
IEC 60034-11:2020 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 single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034-1 and IEC 60034-12 that:- have a rated voltage up to 1 000 V;- are intended for direct-on-line or star-delta starting.The main changes with respect to the previous edition are:- the additional specification of winding temperature limits for temperature class 200 (N),- the increased limits of maximum winding temperatures for overloads with rapid variation,- the clarification that the motor winding may be permanently damaged after it has been exposed to temperatures- a clarification of the definition of indirect thermal protection,- a clarification on the test methods for larger motors.
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Sumary
Rotating electrical machines - Part 11: Thermal protection
IEC 60034-11:2020 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 single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034-1 and IEC 60034-12 that:
- have a rated voltage up to 1 000 V;
- are intended for direct-on-line or star-delta starting.
The main changes with respect to the previous edition are:
- the additional specification of winding temperature limits for temperature class 200 (N),
- the increased limits of maximum winding temperatures for overloads with rapid variation,
- the clarification that the motor winding may be permanently damaged after it has been exposed to temperatures
- a clarification of the definition of indirect thermal protection,
- a clarification on the test methods for larger motors.
IEC 60034-11:2020 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 single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034-1 and IEC 60034-12 that:
- have a rated voltage up to 1 000 V;
- are intended for direct-on-line or star-delta starting.
The main changes with respect to the previous edition are:
- the additional specification of winding temperature limits for temperature class 200 (N),
- the increased limits of maximum winding temperatures for overloads with rapid variation,
- the clarification that the motor winding may be permanently damaged after it has been exposed to temperatures
- a clarification of the definition of indirect thermal protection,
- a clarification on the test methods for larger motors.
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Replaced standards
(1)
IEC 60034-11:2004
July 2004
International standard
Cancelled
Rotating electrical machines - Part 11: Thermal protection
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. Applies to machines manufactured in accordance with IEC 60034-12.
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