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1.In case the three-phase equipment is conncted in reverse order,the protector shall output an open circuit signal to swith off control power supply of the three-phase equipment to stop the machine.
2.Only three phases are connected in right order,can the protector allow the control circuit of the tree-phase equipment to energize and to run..
3.During the operation course of the equipment,if one phase is opened,the protector shall act immediately to switch off the control circuit thus to ensure the three-phase equipment not to operate under abnormal status.
保护特点：
动态缺相、静态缺相保护：指被保护设备在运行状态或非运行状态，任意一相发生断相故为：黄灯灭。
错相保护：防止L1、L2、L3三相交流电源相序接错的一种保护措施。即时动作。指示灯形式为：黄灯灭。
Characteristics of protection
Dynamic phase-lacking protection and static phase-lacking protection, which starts to work if one phase opens when the protected equipment is in operating course or un-operating state. The yellow indicator lamp goes out.
Error-phase protection: It is a protection method preventing L1, L2 and L3 three-phase power supply connecting incorrectly. It can work instantly and the yellow indicator lamp goes out.
性能特点：
监视器的保护功能能够全性能、全气候长期工作。功耗不大于25W；
本产品通过CE认证。
Performance characteristics:
The monitor can exert its protection function wholly and in any climate for a long time. The power≤25W；
This product has pass CE Certification.
工作特点：
L1、L2、L3三相接线正确，监视器黄灯亮，继电器吸合；如果相序接错，监视器黄灯灭。
L1、L2、L3三相或任何一相丢失（相对丢失的临界值100V），监视器黄灯灭。
Work characteristics:
If three phases L1, L2 and L3 are in a correct connection, the yellow indicator lamp is on and the relay picks up; If the phase sequence is connected incorrectly, the yellow indicator lamp goes out;
If three phases L1, L2 and L3, or any phase is opened (the critical value of phase failure is 100V), the yellow indicator lamp goes out.
技术参数：
环境温度：-25℃―- +55℃
相对温度：< 90%
外型尺寸：68mm×30mm×72mm
Technical Parameters：
Environment temperature: -25℃ ―- +55℃
Relative humidity :< 90%
Dimension:68mm×30mm×72mm
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