一台额定容量为50MW的同步发电机，额定电压为10.5kV,额定功率因数为0.8,次暂态电抗为0.135。发电机在空载情况下突然发生三相短路后，短路电流标幺值为(  )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69514' and id < 4503398 and id<>'4503398' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69514' and id > 4503398 and id<>'4503398' order by id asc limit 5