单侧电源线路瞬时电流速断保护的最小保护范围不小于（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69376' and id < 4491243 and id<>'4491243' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69376' and id > 4491243 and id<>'4491243' order by id asc limit 5