三相四线有功电能表不接零线所造成的影响

The Influences Caused by Three-phase, Four Wires Electric Meter without Earth Wire

本文通过对三相四线有功电能表在不同方式运行中的计量分析,可以知道接入零线与未接零线在运行中出现同样故障时,其计量的误差不同,会造成计算错误。所以在安装时一定要求接入零线。

Through the analysis about the measure data of three- phase, four wires electric meter in the different modes, we can know that whether the electric meter is connected to earth wire or not, the error is different. Therefore, the earth wire must be connected to it when electric meter is set up.