断路器开断中性点不直接接地系统中的三相短路电流时,首先开断相的恢复电压为( )。(Uph为相电压,Um为电源电压最大值)
发布时间:2026-04-22
A.1.5Uph
B.Uph
C.1.25Uph
D.Um
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69524' and id < 4504236 and id<>'4504236' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69524' and id > 4504236 and id<>'4504236' order by id asc limit 5
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