weak current line的意思|示意

This paper introduces the integration of UPS and intelligent time distribution technique of weak current systems in rail transit and its application in Shenzhen Metro Line 3 .

提出了城市轨道交通采用弱电系统后备电源整合与智能化计时配电管理的设计理念，并在深圳地铁3号线中应用。

On account of the weak fault current and unstable fault arc, the problems of the single phase to ground fault line selection in the non-solid earthed network have never been thoroughly resolved.

由于故障电流小、电弧不稳定等原因，小电流接地系统单相故障选线问题始终没有得到彻底解决。