该继电器的设计思想是将过压继电器和欠压继电器集成到一起，并且实时显示所测电压值，能修改电压的上、下限。
The low-voltage relay and the excess voltage relay are integrated into one relay, which can display the real time of the voltage of the circuit and the limit of voltage can be modified.
在额定控制电源电压的35%～70%时，欠电压脱扣器应可靠使断路器脱扣；
Under the voltage of 35% ~ 70% of the rated voltage, the under-voltage release should make the breaker trip correctly.
提出了一种能够自产生基准电压和偏置电流，并且锁定阈值电压和迟滞量稳定的新型欠压锁定电路。
A novel under-voltage lockout circuit is proposed which could generate reference voltage and bias current itself, and could stabilize lockout threshold voltage and hysteresis quality.
对黑启动过程中发电机带空载长线路可能出现的欠励限制动作导致的系统工频电压升高问题进行了研究。
This research aims to study over voltage induced by under-excitation limitation moves in black start of the power system.
正常源每一相位的欠压传感：起始电压可在额定值85 - 100%的范围内调节；回动电压可在始动值75 - 98%的范围内调节。
Undervoltage Sensing for Each Phase of Normal Source: pickup voltage is adjustable form 85 to 100 percent of nominal, and dropout voltage is adjustable from 75 to 98 percent of pickup value.
欠电压脱扣器在万能式断路器上是十分常见的一件电压保护装置，该装置的失效直接影响到断路器的正常运行。
An undervoltage tripper is a very popular electrical protection device for universal breaker, which will directly affect the normal operation of a breaker if it breaks down.
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.
一种具有欠电压保护电路(11)的电压调节器(10)和一种用于防范输出电压小于预定的电平的方法。
A voltage regulator (10) having an undervoltage protection circuit 11 and a method for protecting against an output voltage out being less than a predetermined level.
当电池电压下降到预定的欠压值时，能自动侦测，同时停止输出。
The controller continuously detects the voltage of the battery and switches off the power output when battery voltage is lower than a specified value.
其他特点包括用于IC电源的内置低压差稳压器、可编程软启动、欠压闭锁、可调电流限制和输出电压温度补偿。
Additional features include an onboard low drop regulator for IC power, programmable soft start, undervoltage lockout, adjustable current limit and output voltage temperature compensation.
欠电保护功能：当检测到电池电压低于设定值时，提示性自动阀，运行的数据自动保存；
Owe protection function:when the battery voltage detected than setting , indicative of automatic valve, operation data automatically preserve.
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.
尺寸小，重量轻，频率范围宽；具有电池电压欠压和工作状态指示；可内，外供电方式；非常适合于现场和无外接电源时的使用；
Small Dimensions, lightweight; Wide frequency range; Operation status LEDs; Low-battery warning; Internal or external power supply; Suitable for filed test.
尺寸小，重量轻，频率范围宽；具有电池电压欠压和工作状态指示；可内，外供电方式；非常适合于现场和无外接电源时的使用；
Small Dimensions, lightweight; Wide frequency range; Operation status LEDs; Low-battery warning; Internal or external power supply; Suitable for filed test.
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