三相变压器绕组为Yy联结时，绕组相电流就是瞬时电流。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68477' and id < 4421364 and id<>'4421364' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68477' and id > 4421364 and id<>'4421364' order by id asc limit 5