---
title: 绝缘等级 - 欧拉利
description: 电机绝缘等级A、E、B、F、H详解：各等级温度限值、判定标准及其对电机寿命与额定值的影响，EURARI技术资料。
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介绍电机与齿轮箱产品组合技术信息⑥，了解绝缘等级

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、C、N、R级，一般电机绝缘等级多采用E、B、F、H级，本目录中的绝缘等级定义遵循NEMA标准。

 | 温度等级 | A 级 | E 级 | B 级 | F 级 | H 级 | C 级 | N 级 | R 级 |
|---|---|---|---|---|---|---|---|---|
| 最高允许温度 | 105℃ | 120℃ | 130℃ | 155℃ | 180℃ | 200℃ | 220℃ | 240℃ |
| 绕线温升限值 | 60K | 75K | 80K | 105K | 125K | 135K | 150K | 170K |
| 性能参考温度 | 80℃ | 95℃ | 100℃ | 120℃ | 145℃ | 155℃ | 170℃ | 190℃ |

\*所有绕线温升限值均基于40℃的环境温度计算。

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