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1、欠过压监视器VMD420Multi-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1.Underandovervoltagemonitoringin3(N)ACsystems0…500V欠过压监测的3
2、(N)AC系统0...500V2.Monitoringofasymmetry,phasefailure,phasesequence监测不对称,缺相,相序3.DifferentmonitoringfunctionsUUcanbeselected不同的监控功能UU可以选择4.Startingdelay,responsedelayanddelayonrelease启动延迟,响应延迟和延迟释放5.Adjustableswitchinghysteresis可调节的开关滞后6.R.m.s.valuemeasu
3、rementR.m.s.值计量7.Digitalmeasuredvalueindicationviamulti-functionalLCdisplay通过多功能液晶显示屏的数字测量值显示8.Presetfunction(automaticassignmentofbasicparameters)预置功能(自动分配的基本参数)9.PowerOnLED,alarmLEDsAL1,AL2电源指示灯,报警LEDAL1,AL210.Measuredvaluememoryforoperatingvalue测量值存储器存储操作值11.Cont
4、inuousselfmonitoring持续的自我监测12.TEST/RESETbutton,internal内部TEST/RESET按钮13.Twoseparatealarmrelays(Alarmassignment,selectableviamenu)两个独立的报警继电器(报警分配,通过菜单选择)14.N/CoperationorN/OoperationandfaultmemorybehaviourselectableN/C操作或N/O操作,可以选择故障存储器行为15.Passwordprotectionfordevic
5、esetting设备设置密码16.Sealabletransparentcover保护密封的透明盖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(windowdiscrimina
6、torfunction)in3(N)ACsystems.Thevoltagesaremeasuredasr.m.s.values.ThecurrentlymeasuredvalueiscontinuouslyshownontheLCdisplay.Themeasuredvalueleadingtotheactivationofthealarmrelayswillbesaved.Duetoadjustableresponsetimes,installation-specificcharacteristics,suchasdevi
7、ce-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.m.s值作为测定值。当前测量值连续显示在液晶显示器上。导致报警继电器动作的测量值将被保存。由于可调的响应时间、安装的具体特点,如特定于设备的起始时期,短
8、时间的电压波动、降温期间等是可以考虑的。该设备需要单独的电源电压。Typicalapplication典型用途1.Monitoringofvoltage-sensitivemachinesandsystem监测的电压敏感设备及系统2.Switchingsystemsonoro