合理采用低压剩余电流保护措施的计算依据

Calculation Basis of Reasonably Adopting Low Voltage Leakage Protection Measures

介绍了低压配电中采用剩余电流保护措施的设计依据,针对在实际工程中某些情况下规范要求设置剩余电流保护的条件与电气设备剩余电流较大相矛盾的事实,提出了应当通过恰当的计算确定是否采用剩余电流保护措施,给出了不同负荷大小和不同供电距离情况下是否需要采用剩余电流保护的计算数据,为工程设计时合理采用剩余电流保护措施提供参考。

This paper introduces the design basis of using leakage protection measures in low voltage power distribution.In view of the fact that there is a contradiction between the condition of setting leakage protection and the large leakage current of electrical equipment in some cases.It is proposed that whether to use leakage protection measures should be determined by proper calculation.The calculation data of whether leakage protection is needed under different load and different power supply distance are given.It provides a reference for the reasonable use of leakage protection measures in engineering design.