3512C HD SR500 Generator Sets Caterpillar


Generator Winding - Test

Usage:

3512C 9G9



图 1g00935208

PMPE 发电机 2400、2500、2800 和 2900 机架线路图

(CR1-C6) 二级管

(C7) 变阻器

(L1) 励磁机磁场(定子)

(L2) 励磁机电枢(转子)

(L3) 主磁场(转子)

(L4) 主电枢(定子)

(L5) 副励磁机电枢

(PM) 永久磁体

(RFA) 旋转磁场总成

(CST) 用户提供的变压器




图 2g00935204

PMPE 发电机 2600 机架线路图

(CR1-C6) 二级管

(C7) 变阻器

(L1) 励磁机磁场(定子)

(L2) 励磁机电枢(转子)

(L3) 主磁场(转子)

(L4) 主电枢(定子)

(L5) 副励磁机电枢

(PM) 永久磁体

(RFA) 旋转磁场总成

(CST) 用户提供的变压器

表 1
所需工具    
零件号     零件     数量    
6V-7070     数字万用表     1    
9U-7330     万用表     1    
146-4080     数字万用表(RS232)     1    
7X-1710     万用表     1    

测量下列绕组的电阻值: (L1), (L2), (L3), (L4) 和 (L5) 。 测量前必须把要测试的绕组与其它元件脱开。 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,绕组很可能损坏。 关于更准确的电阻值,请向技术市场信息(TMI)咨询。 参见有问题的发电机配置总成。

注: 绕组的温度影响电阻值。 绕组温度升高,绕组电阻也增大。 绕组温度降低,绕组电阻也减小。 因此只有当绕组在室温时才能进行正确的测量。

下列各电枢绕组的电阻非常小: (L2), (L4) 和 (L5) 。 它们的电阻值接近于零欧姆。 应使用毫欧表来测量电枢绕组的电阻。

励磁机电枢转子 (L2) - 小于 0.1 欧姆

主电枢定子 (L4) - 小于 0.1 欧姆

副励磁机电枢 (L5) - 小于 0.1 欧姆

适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) - 大约 3.0 欧姆至 6.0 欧姆

主磁场(转子) (L3) - 约 0.75 至 2.0 欧姆

注: 在任何绕组与地之间均不应导通。 在任一绕组与另一绕组之间也不应导通。

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