SINAMICS G120: PM230, PM240, PM250, PM260 and PM340 功率模块的接地故障检测问题,接地故障检测可能出现的错误:

在没有负载的情况下,如果功率模块的输出电缆达到最大长度,且开关频率在8K以上,变频器和电机的某相接地故障

会检测不到,装置继续运行.

如果电机加速,故障会马上检测到,然后报过流故障代码( 代码为F0001)
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