故障指示器汇集单元电源回路与外壳，额定绝缘电压Ui≤60V 时，施加（ ） 工频电压应无击穿、无闪络
2023-12-01D16
故障指示器汇集单元电源回路与外壳，额定绝缘电压Ui≤60V 时，施加（ ） 工频电压应无击穿、无闪络
A.250V/1min
B.500V/1min
C.1000V/1min
D.2000V/1min
正确答案是B
故障指示器汇集单元电源回路与外壳，额定绝缘电压Ui≤60V 时，施加（ ） 工频电压应无击穿、无闪络
A.250V/1min
B.500V/1min
C.1000V/1min
D.2000V/1min
正确答案是B