当线路出现不对称断相时，因为没有发生接地故障，所以线路没零序电流。()

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id < 4507107 and id<>'4507107' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id > 4507107 and id<>'4507107' order by id asc limit 5