题目内容

发电机组至低压配电柜馈电线路的相间以及相对地间的绝缘电阻值应大于0.5MΩ；塑料绝缘电缆馈电线路直流耐压试验为2.4kV，时间( )，泄漏电流稳定，无击穿现象。

A. 8min
B. 10min
C. 12min
D. 15min

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