SR5 Electric Power Generation Caterpillar


Winding - Test

Usage:

SR5 G1E



图 1g01388839

1800 机架系列 PMPE 发电机接线图

(CR1-C6) 二级管

(CR7) 可变电阻

(L1) 励磁机定子

(L2) 励磁机转子

(L3) 主转子

(L4) 主定子

(L5) PMG 定子

(PM) 永磁铁

(RFA) 旋转磁场总成

(CT1) 可选降压变压器

(T0、T1、T2、T3、T7、T8、T9) 发电机端子

表 1
数量     所需工具    
1     低欧姆表    

测量下列绕组的电阻值: (L1), (L2), (L3), (L4) 和 (L5). 测量电阻前,应将要测试的绕组与其他部件断开连接。

注: 绕组的温度会影响电阻值。 当绕组温度上升时,绕组电阻增大。 当绕组温度下降时,绕组电阻降低。 因此只有当绕组处于室温时,才能进行正确的测量。

下面的电阻测量值是近似值。 如果测得的值与所列的近似值不接近,绕组很可能已损坏。 如需了解更精确的电阻值,请参阅技术营销信息 (TMI)。 参阅所述的发电机配置总成。

下面的绕组电阻极小: (L2), (L4) 和 (L5). 这些绕组的电阻值接近于零欧姆。 应使用毫欧姆表测量绕组的电阻。

励磁机转子 (L2) - 参见表 2。

主定子 (L4) - 小于 0.1 欧姆

副励磁机定子 (L5) - 小于 0.1 欧姆

使用万用表来测量磁场绕组 (L1) 和 (L3) 的电阻。

励磁机磁场(定子) (L1) - 参见表 2。

主磁场(转子) (L3) - 约 0.35 至 1.2 欧姆

注: 在任何绕组与地线之间均不应导通。 任意绕组之间也不应导通。

表 2
    L1 – 励磁机磁场     L2 – 励磁机转子     主磁场 – 转子    
1800 机架     10.9 欧姆     0.05 欧姆     0.9 欧姆    
1600 机架     10 欧姆     0.06 欧姆     0.5 欧姆    
1400 机架     11 欧姆     0.06 欧姆     0.35 欧姆    

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