西门子过载继电器3UA3RU3RB常见问题集锦

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1、过载继电器3UA/3RU/3RB常见问题集锦FAQcollectionforoverloadrelay3UA/3RU/3RBCluster-FAQEdition(2010年5月)摘要过载继电器3UA/3RU/3RB常见问题集锦关键词3UA，3RU1，3RU5，3RB，过载继电器KeyWords3UA，3RU1，3RU5，3RB，overloadrelayIA&DTService&SupportPage2-17目录第一章通用知识.....................................

2、..............................................................................4Q1:过载继电器的选用原则................................................................................................4Q2:电动机星—三角起动时，过载继电器在三个不同位置的整定电流...............................5

3、第二章3RU热过载继电器.....................................................................................................6Q1:热继电器3RU/3UA和电子式过载继电器3RB有何区别？...........................................6Q2:3RU11/51“STOP”钮功能...........................................

4、.................................................7Q3:3RU热继电器透明塑料盖的功能.................................................................................8Q4:3RU的TRIP指示窗功能......................................................................................

5、.........8第三章3UA热过载继电器.....................................................................................................9Q1:3UA独立安装时电流的设定.......................................................................................10Q2:关于3UA的测试............

6、............................................................................................10第四章3RB电子式过载继电器............................................................................................11Q1:如何解决3RB22/23指示灯红色闪烁的故障？........................

7、..................................11Q2:3RB系列过载继电器的电气远程复位........................................................................12Q3:3RB12和3RB22接地故障保护功能.........................................................................12Q4:3RB21接地故障保护功能.........

8、................................................................................13Q5:3RB20/21的安装方式...............................................................................................13Q6:3RB2单稳态、双稳态区别.........................