Rotating Rectifier - Inspect/Test
检查励磁机电枢。 确认旋转整流器紧固。 如果怀疑整流器出现故障的话,进行"测试三合一二极管整流器块"部分。
测试三合一二极管整流器块
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图 1 | g00610240 |
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图 2 | g00613971 |
三合一二极管整流器块(两块) |
下列程序可对一个块内的全部三个二极管进行测试。 检查整流器的正极组和负极组。 如果有任何仪表读数未落在给定范围内,则更换整流器。
- 将数字式万用表置于二极管量程。 将整流器的所有引线拆下。
- 按这些步骤测试整流器的负极组:
- 将红色测试引线放在负极"-"端子上。 将黑色测试引线放在整流器的下列端子上: "AC1" (3), "AC2" (4) 和 "AC3" (5). 仪表上的所有读数应在0.4和1.0之间。
- 将黑色测试引线放在负极"-"端子上。 将红色测试引线放在整流器下列端子上: "AC1" (3), "AC2" (4) 和 "AC3" (5). 这些情况下,仪表的全部读数都应为"OL"(过载)。
- 按下列步骤测试整流器块的正极:
- 将红色测试引线放在整流器正极"+"端子上。 将黑色测试引线放在整流器的下列端子上: "AC1" (3), "AC2" (4) 和 "AC3" (5). 这些情况下,仪表的全部读数都应为"OL"(过载)。
- 将黑色测试引线放在整流器正极"+"端子上。 将红色测试引线放在整流器下列端子上: "AC1" (3), "AC2" (4) 和 "AC3" (5). 仪表上的所有读数应在0.4和1.0之间。
注: 二极管短路会损坏励磁机的转子。 如果二极管短路,检查励磁机转子。 请参阅测试与调整, "绕组 - 测试"和测试与调整, "绝缘 - 测试"。 进行这些测试。
注: 此整流器模块还包含可变电阻 "CR7"。可以通过测量整流器正极 "+" 端子与整流器负极 "-" 端子之间的电阻来检查可变电阻 "CR7"。 电阻值最小应为 15000 欧姆。
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