Protection Settings of RCD for a Temporary Electricity System of Construction Site

Yue Xuegang （Jinlv Construction Co., Ltd.，Yuncheng 043304，Shanxi Province，China）

 

    Abstract A construction site uses two-level RCD protection in accordance with the industry standard，the RCD trips frequently in the general distribution box in the process of construction. This paper analyzes the design problem of temporary electricity and some other operational and managerial problems in the construction site and proposes corresponding solutions.　

    Key words　Construction site　Temporary electricity TN　-　S system RCD（residual current operated protective device）

 

    摘　要　某施工现场按照行业标准，采用两级 RCD 保护，施工过程中总配电箱内的 RCD 频繁跳闸。分析该施工现场临时用电设计及运行管理中的一些问题，提出相应的解决办法。

    关键词　施工现场　临时用电　TN - S系统　剩余电流动作保护