UMD420用户手册简略翻译.docx

欠过压监视器VMD420

Multi-functional,3(N)AC,overvoltage,undervoltage,windowdiscriminatorfunctionphasesequence,phasefailure,asymmetrywithseparatesupplyvoltage.

多功能，3〔N〕AC，过压，欠压，窗口鉴别功能相序，断相，不对称单独的电源电压。

Devicefeature设备功能

Underandovervoltagemonitoringin3(N)ACsystems0…500V

欠过压监测的3〔N〕AC系统0...500V

Monitoringofasymmetry,phasefailure,phasesequence

监测不对称，缺相，相序

DifferentmonitoringfunctionsU,UU/Ucanbeselected

不同的监控功能UUU/U可以选择

Startingdelay,responsedelayanddelayonrelease

启动延迟，响应延迟和延迟释放

Adjustableswitchinghysteresis

可调整的开关滞后

R.m.s.valuemeasurementR.m.s.值计量

Digitalmeasuredvalueindicationviamulti-functionalLCdisplay

通过多功能液晶显示屏的数字测量值显示

Presetfunction(automaticassignmentofbasicparameters)

预置功能〔自动安排的根本参数〕

PowerOnLED,alarmLEDsAL1,AL2

电源指示灯，报警LEDAL1，AL2

Measuredvaluememoryforoperatingvalue

测量值存储器存储操作值

Continuousselfmonitoring

持续的自我监测

TEST/RESETbutton,internal

内部TEST/RESET按钮

Twoseparatealarmrelays(Alarmassignment,selectableviamenu)

两个独立的报警继电器〔报警安排，通过菜单项选择择〕

N/CoperationorN/OoperationandfaultmemorybehaviourselectableN/C操作或N/O操作，可以选择故障存储器行为

Passwordprotectionfordevicesetting

设备设置密码

Sealabletransparentcover

保护密封的透亮盖

17.2-moduleenclosure(36mm)

模块外壳〔36毫米〕

18.Displayofsystemfrequency

系统频率显示

Productdescription产品描述

Themulti-functionalvoltagemonitorVMD420monitorsundervoltage,overvoltageandthevoltagebetweentwothresholdvalues(windowdiscriminatorfunction)in3(N)ACsystems.The voltages are measured as r.m.s. values. The currently measured value iscontinuouslyshownontheLCdisplay.Themeasuredvalueleadingtotheactivationofthealarmrelayswillbesaved.Duetoadjustableresponsetimes,installation-specificcharacteristics,suchasdevice-specificstartingperiods,short-timevoltagefluctuations,coolingdownperiodsetc.canbeconsidered.Thedevicesrequireaseparatesupplyvoltage.

多功能的电压监视器VMD420监视欠压，过压和3〔N〕AC系统中的两个值〔窗口鉴别器功能〕之间的电压。电压r