电动机的绝缘等级是指其所用绝缘材料的耐热等级，分A、E、B、F、H级。允许温升是指电动机的温度与周围环境温度相比升高的限度。
今天总结下自己看过的一些电机绝缘相关的规范，以后会慢慢分析这些规范的个人解读。
电动机的绝缘等级
绝缘的温度等级 A级 E级 B级 F级 H级
最高允许温度（℃） 105 120 130 155 180
绕组温升限值（K） 60 75 80 100 125
性能参考温度（℃） 80 95 100 120 145
在发电机等电气设备中，绝缘材料是最为薄弱的环节。绝缘材料尤其容易受到高温的影响而加速老化并损坏。不同的绝缘材料耐热性能有区别，采用不同绝缘材料的电气设备其耐受高温的能力就有不同。因此一般的电气设备都规定其工作的最高温度。
绝缘等级细分
人们根据不同绝缘材料耐受高温的能力对其规定了7个允许的最高温度，按照温度大小排列分别为：Y、A、E、B、F、H和C。它们的允许工作温度分别为：90、105、120、130、155、180和180℃以上。因此，B级绝缘说明的是该发电机（电动机）采用的绝缘耐热温度为130℃。使用者在发电机工作时应该保证不使发电机绝缘材料超过该温度才能保证发电机正常工作。
1.电机绝缘设计规范
▶ GB/T 16935.1/IEC 60664-1
Insulation coordination for equipment within low-voltage systems
▶ GB/T 22720.1/IEC 60034-18-41
Rotating electrical machines - Part 18-41: Partial discharge free electrical insulation systems (Type I) used in rotating electrical machines fed from voltage converters - Qualification and quality control tests
▶ GB/T 22720.2/IEC 60034-18-42
Rotating electrical machines - Part 18-42: Partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters - Qualification tests
总结：这3个标准适用于电气间隙，爬电距离以及电机绝缘类型的设计。
2.绝缘测试
▶ GB/T 29311/IEC 61251
Electrical insulating material and systems-AC voltage endurance evalution
▶ GB/T 20112/IEC 60505
Evaluation and qualification of electrical insulation systems
▶ GB/T 20160-2006
旋转电机绝缘电阻测试
总结：这些是电机绝缘测试相关参考的标准，区别于18488，这些标准更加细致，更加容易明白测试机理。
3.绝缘评估
▶ IEEE 1064：
IEEE guide for multifactor stress functional testing of electrical insulation
▶ IEEE 101:
IEEE guide for statustical analysis of termal life test data
▶ IEC 60216-1:
Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
▶ IEC 60216-2 :
Electrical insulating materials - Thermal endurance properties - Part 2: Determination of thermal endurance properties of electrical insulating materials - Choice of test criteria
▶ IEC 60216-3：
Electrical insulating materials - Thermal endurance properties - Part 3: Instructions for calculating thermal endurance characteristics
总结：以上规范是设计老化试验，主要用于评判电气绝缘寿命
4.绝缘纸
▶GB/T 5591.1/IEC 60626-1:
Combined flexible materials for electrical insulation-Part 1: Definitions and general requirements.
▶GB/T 5591.2/IEC 60626-2:
Combined flexible materials for electrical insulation-Part 2: Methods of test.
▶GB/T 5591.3/IEC 60626-3:
Combined flexible materials for electrical insulation-Part 3: Specifications for individual material.
▶ GB/T 1408.1/60243-1:
Methods of test for electrical strength of solid insulating materials tests at power frequencies.
5.漆包线
▶ GB/T 4074.5/IEC 60851-5:
Winding wires test methods-Part 5: Electrical properties.
▶ GB/T 4074.6/IEC 60851-6:
Winding wires test methods-Part 6: Thermal properties.
▶ GB/T 4074.21/IEC 60851-21:
Winding wires test methods-Part 21: Electrical endurance under high frequency voltage impulses.
6.绝缘漆
▶ GB/T 15022.1/IEC 60455-1:
Resin based reactive compounds used for electrical insulation-Part 1: Definitions and general requirements.
▶ GB/T 15022.2/IEC 60455-2:
Resin based reactive compounds used for electrical insulation-Part 2: Methods of test.
▶ GB/T 15022.4/IEC 6045-4:
Resin based reactive compounds used for electrical insulation-Part 4: Unsaturated polyester based impregnating resins
总结：4，5，6是电机绝缘材料相关的标准，对于绝缘材料最看重的还是击穿场强，漆包线也关注PDIV以及耐热性能
选择合适的绝缘等级可以确保电机在特定运行条件下的稳定性和安全性。同时在使用过程中还需要定期进行绝缘电阻的检测和维护以确保电机的长期稳定运行。希望以上内容能够为您提供有关电机绝缘等级的全面了解和参考。
部分内容来源：电驱动家园
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