LINETRAXX® VME420

VME420系列电压监视仪被设计用于监视频率、欠电压、过电压和交流和直流系统中两个阈值之间的电压。电压测量是真实有效值。电流测量值连续显示在液晶屏上。存储触发报警继电器所需的测量值。由于可调的响应时间，可以考虑特定于设备的特性，如特定于设备的启动过程、短时电压波动等。监视仪需要外部电源电压。

Monitoring AC/DC systems for undervoltage, overvoltage and frequency in the voltage range of 0…300 V
Various monitoring functions selectable
< U, > U, < f, > f
Start-up delay, response delay and delay on release
Adjustable switching hysteresis
r.m.s. value measurement (AC+DC)
Digital measured value display via multi-functional LC display
Preset function (automatic setting of basic parameters)
LEDs: Power On, Alarm 1, Alarm 2
Measured value memory for operating value
Continuous self monitoring
Internal test/reset button
Two separate alarm relays (one changeover contact each)
N/C or N/O operation and fault memory behaviour selectable
Password protection for device setting
Sealable transparent cover
Two-module enclosure (36 mm)
Push-wire terminal (two terminals per connection)
RoHS compliant

Single-phase voltage and frequency monitoring of machines and electrical installations
Earth fault monitoring in medium-voltage systems via voltage transformers
Monitoring of battery systems
Switching on and switching off at a certain voltage level

可选配件 LINETRAXX® VME420

Type	Art No.
Mounting clip for screw fixing (1 piece per device)	B98060008

Type	Supply voltage US*	Nominal system voltage Un*	Art. No.**
VME420-D-1	DC 9,6 V…94 V / AC 16…72 V, 15…460 Hz	AC/DC 0…300 V / 15…460 Hz	B73010001 B93010001
VME420-D-2	DC 70…300 V / AC 70…300 V, 15…460 Hz	AC/DC 0…300 V / 15…460 Hz	B73010002 B93010002

* absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)

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