IEC 60034-11:20 20 RLV包含官方IEC国际标准及其红线版本。Redline版本不是官方文档，它只有英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 60034-11:20 20规定了与热保护器和热探测器的使用相关的要求，这些热保护器和热探测器结合到定子绕组中或放置在感应电机中的其他合适位置，以保护它们免受热过载造成的严重损坏。它适用于符合IEC 60034-1和IEC 60034-12的单速三相50 Hz或60 Hz笼式感应电动机: -具有高达1000V的额定电压； -用于直接在线或星形三角形启动。与上一版相比的主要变化是: -温度等级200(N)的绕组温度限制的附加规范， -对于快速变化的过载，最高绕组温度的限制增加， -说明电机绕组在暴露于温度后可能会永久损坏 -澄清间接热保护的定义， -澄清大型电机的测试方法。

IEC 60034-11:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

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.