3512C and 3516C Marine Auxiliary and Generator Set Engines Caterpillar


Rotating Rectifier - Inspect/Test

Usage:

3512C 2A2

检查

检查励磁电枢。 确认旋转整流器紧固。 如果怀疑整流器有故障,则转到本文中的 "测试旋转整流器。"信息部分。

测试旋转整流器。

使用欧姆表测试 无刷式励磁机旋转整流器

表 1
所需工具 
零件号  零件名称  数量 
237-5130  数字式万用表 
257-9140  万用表 
146-4080  数字万用表(RS-232)  
7X-1710  万用表表笔总成 


图 1g00555106

如果怀疑整流器出现故障,使用下述步骤进行测试。

  1. 拆下励磁机盖。

  2. 拆下将整流器固定到散热片上的螺母。

  3. 拆下二极管引线。

  4. 将整流器从散热片上提取下来。

  5. 请参阅插图 1。 将欧姆表引线跨接在整流器上。 记录欧姆表读数。

  6. 将欧姆表引线反接。 记录欧姆表读数。

当欧姆表引线以某一方向跨接在整流器上时,欧姆表应指示低电阻。 当欧姆表反向跨接时,欧姆表应指示高电阻。

如果欧姆表在正反两个方向都指示低电阻,说明整流器短路。 如果欧姆表在正反两个方向都指示高电阻,说明整流器开路。

使用具有用具有同等工作性能的整流器来更换有故障的整流器。 当订购整流器备件时应提供如下信息:

  • 零件号

  • 整流器型号

  • 整流器类型

  • 发电机的序列号

使用测试灯来测试 无刷式励磁机旋转整流器



图 2g00555113
测试灯

如果没有欧姆表,可以使用测试灯来测试整流器。 测试灯包括两个标准手电筒电池和一个手电筒灯泡。 请参阅插图 2。

如果怀疑整流器出现故障,使用下述步骤进行测试。

  1. 拆下励磁机盖。

  2. 拆下将整流器固定到散热片上的螺母。

  3. 拆下二极管引线。

  4. 将整流器从散热片上提取下来。

  5. 将测试灯跨接在整流器上。 注意灯泡是否点亮。

  6. 将测试灯反接在整流器上。 注意灯泡是否点亮。

当测试灯引线以某一方向跨接在整流器上时,灯泡应点亮。 当测试灯引线反向跨接时,灯泡不应点亮。

如果灯泡在正反两个方向都点亮,说明整流器短路。 如果灯泡在正反两个方向都不点亮,说明整流器短路。

使用具有用具有同等工作性能的整流器来更换有故障的整流器。 当订购整流器备件时应提供如下信息:

  • 零件号

  • 整流器型号

  • 整流器类型

  • 发电机的序列号

Caterpillar Information System:

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