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)(0.5)
发布时间:2025-11-26
A.1.5Uph
B.Uph
C.1.25Uph
D.Um
试卷相关题目
-
SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id < 4494269 and id<>'4494269' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id > 4494269 and id<>'4494269' order by id asc limit 5
湘公网安备:43011102000856号 
