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.
内部诊断提供全面的过载、输入欠压及过温保护。
Internal diagnostics provide comprehensive protection against overloads input undervoltage and overtemperature conditions.
报警功能：声响报警并停机；报警内容：缺相，欠压，过压，高温，紧急停机。
Alarm function: sound alarm and stop machine. Alarm content: lacking phase, under-voltage, overvoltage, high temperature and urgent stopping.
实现直流系统过、欠压保护及电压显示的组合，装置的集成度非常高。
DC system had to achieve, under-voltage protection and voltage show a combination of device integration is very high.
其中过压欠压保护是利用硬件电路实现； 过流利用电机控制器MC33035自身的过流检测保护功能；
Over-voltage and under-voltage protection is implemented by hardware and over-current protection is by MC33035 component inside protective function.
当母线出现故障（过压或欠压）时，能够完成两组母线的自动投切，即备自投的功能。
When bus gets into trouble, it can perform the function of automatic switching to backup power supply.
该系统解决了电动机启动中电流过大的问题，并且实现电动机的过压、过流、欠压等各种故障的数字显示。
The device can solve the problem of over current in electromotor start up process, and has the digital displaying of fault such as under voltage, over voltage and over current, etc.
同时该芯片具有电源欠压保护、输出过压保护、过温保护和每个周期的电流限制等功能。
The chip has under voltage protection, over voltage protection, over temperature protection and cycle-by-cycle current limit.
可选择过压、欠压、过载、旁路、防雷等保护功能。
The protection functions of over-voltage, under voltage, over load, by pass and lightening protection can be selected.
通过LED显示器显示电压、电流、电度的实时值，当过压30%、过流30%、欠压30%时进行声光报警，并能通过串行口结合有关通信协议，实时与管理计算机进行通信实现远程户外抄表。
The functions are LED displaying, alarming when 30% over-current, over-voltage and under-voltage occurring, and communicating with the management computer through the series port with some protocols.
此外，还包括了霍尔传感器断线检测、电池欠压保护、过流保护等保护功能。
Also protect circuits against loss of hall signal, low battery voltage, over current are included.
以LKJ2000型监控电源插件为例，介绍模块化电源的功能，阐述了模块化电源的过压、欠压保护电路的工作原理及各路输出过流保护电路的工作原理。
Taking the power board of type LKJ2000train monitoring and recording device as an example, the paper describes the function of the modular power supply.
具备短路、过流、欠压等完备的保护功能。
It possess complete protection functions over short circuit, over current, under voltage. etc.
13试验台有欠压、过压、过热、过载等保护功能。
The test bench has under voltage, over pressure, super heating and over loading protection function.
具有过载、欠压、过压保护及电池低压、高压保护。
Overload, low voltage, over voltage protect and low voltage battery and high voltage battery protect.
三相交流电压检测，过压、欠压、缺相、停电告警，全自动双路交流前换功能；
Voltage detect of three phase AC, the warning of over-voltage, under-voltage, lost phase and power failure, two-way AC circuits switch full-automatically.
此外，芯片还集成了过压保护、欠压保护和软启动多种功能。
Besides, this chip has built in the functions such as over-voltage protection, under-voltage protection and soft start.
进一步提高系统可靠性是由内置的过温及综合欠压锁定保护。
System reliability is further enhanced by the built-in over-temperature and integrated under-voltage lock-out protection.
具有完善的过压，欠压，过热，过流，过载自动保护功能，安全可靠。
With the perfect protection functions in over voltage, under voltage, over heat, over current, over load, safe and reliable...
为了保证系统安全有效地运行，系统还做了过流、过压、欠压保护的设计。
What's more, the system gets designed with over-current, over-voltage and under-voltage production to ensure it operates smoothly, effectively and efficiently.
为了保证系统安全有效地运行，系统还做了过流、过压、欠压保护的设计。
What's more, the system gets designed with over-current, over-voltage and under-voltage production to ensure it operates smoothly, effectively and efficiently.
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