过电流脱扣试验。
Due to the specialty, REF relay is a current relay with very high sensitivity or a voltage relay with very low acting power.
由于零差保护的特殊性，零差继电器本身就是一只灵敏电流继电器或动作功率很小的电压继电器。
We should always check the high voltage DC power supply within the current relay, time relay setting value is correct, control is sensitive.
应经常检查高压直流电源内电流继电器，时间继电器的整定值是否正确，控制是否灵敏。
A method in the improvement of current relay controls winding asynchronous motor starting circuit is put forward, and the merit, demerit of it are described in the paper.
本文提出电流继电器控制绕线式异步电动机起动电路改进方法，并对改进电路优劣进行了分析。
The paper presents the neural network models of the current relay, impedance relay of circle character and polygon character, and proves that these models have better adaptability.
给出了电流继电器、圆特性以及四边型特性阻抗继电器的神经网络模型，并证明了三种模型都具有很强的自适应性。
There are two different points of view on whether current relay operates correctly or not, when CT saturates.
电流互感器（CT）饱和时，电流继电器能不能正确动作，一直存在二种载然不同的观点。
The practice shows that LOGO control is simple, reduces electricity fault rate and is worth extended by contrasting LOGO control to direct-current relay control.
运用实践证明：LOGO控制简单方便，减小了电气故障率，值得推广。
The over-current relay works to protect oscillation tubes and rectifier, when the current exceeds its limits. Frequency deviation caused by faulty operation is also prevented.
当电流超过限制值时，过负荷电流继电器自动保护振荡管和整流器，同时可以避免由不当操作所引起的频率漂移。
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.
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.
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。
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