角磨机零线到火线绝缘电阻值是多少?

角磨机零线到火线绝缘电阻值是多少?
2025-03-21 14:13:38
推荐回答(1个)
回答1:

零线与火线之间的绝缘电阻值不能低于0.5兆欧。

电器设备绝缘电阻的检测标准主要有下面内容:

  1. 高压配电装置绝缘电阻测试

  2. 1.1 可动部分绝缘电阻,用2500V摇表测试,不低于1MΩ。

  3. 1.2 高压主回路的绝缘电阻,不低于250MΩ。

  4. 2. 交流电动机绝缘测试

  5. 2.1 定子额定电压在1000V以上的,用2500V摇表测量,定子不小于1MΩ,转子电阻不小于0.5MΩ。

  6. 2.2 定子额定电压在1000V以下的,用1000V摇表测量,绝缘值不小于0.5MΩ。

  7. 2.3 定子额定电压在500V以下的,用500V摇表测量,绝缘值不小于0.5MΩ。

  8. 3. 交流电动机修复后绝缘电阻测试

  9. 3.1 修复后电机测量绕组相与相、相与地之间的绝缘电阻。 500V以下的电机,修复后的绝缘电阻不低于1 MΩ,500V以上的电机,修复后绕组的绝缘电阻不低于5 MΩ。

  10. 4. 电缆绝缘电阻测试

  11. 4.1 新安装敷设的电缆,其绝缘电阻不低于50 MΩ;

  12. 4.2 运行中高压电缆绝缘电阻不小于2 MΩ,低压电缆不小于0.5 MΩ。

  13. 4.3 测量电缆的绝缘电阻时,应断开电源及负荷侧,测量完后电缆三相对地放电。

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