消弧线圈采用过补偿，当系统发生单相接地时，流经接地点的电流为(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69458' and id < 4498247 and id<>'4498247' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69458' and id > 4498247 and id<>'4498247' order by id asc limit 5