WJJL1智能过流继电器是典型的电子、电器技术相结合的产品。 具有过电流、短路、缺相、过欠压、欠电流、相失衡及启动故障等保护功能。
WJJL1 intelligence over current relay is a typical electronic apparatus which has over current, short circuit, over voltage, under curent, phase faults and starting failure protective functions.
此类继电器能够增加系统安全性，并对三相交流接地电阻或接地配电系统进行可靠的低级接地故障检测。
They provide system security and immediate reliable low level ground fault detection on three-phase AC resistance grounded or grounded electrical distribution systems.
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