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Sat May 26 12:06:02 2018
Sat May 26 12:06:02 2018
LINETRAXX® CMD420/CMD421

LINETRAXX® CMD420/CMD421

CMD420/421电流监视仪使用三个测量输入监视交流电流,主要监视过电流、欠电流或过电流和欠电流 (窗口鉴别器的功能)。测量 r.m.s. 值的测量电流(交流)。当前测量值会不断的显示在液晶屏上。 相关的测量通道可以使用向上或者向下箭头按钮选择。存储造成报警继电器打开的测量值。由于可调整延迟时间、安装特点,就可以考虑如设备特定工作电流、瞬时电流变化等。

连接测量的三个标准电流互感器到各自的CMD420/421上。 电流互感器的变压比"n"(n = x/1A ,n = x/5A) 可以设置为n = 2000。

然后,实际设备的实际电流可以通过"n" 系数乘以测量电流 并液晶屏上显示。电流可以从三相系统或三个不同的单相系统中获取。

CMD420/421系列需要额外的电源电压。

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  • Undercurrent and overcurrent monitoring in AC systems with prealarm and main alarm or current monitoring with window discriminator function
  • Current monitoring using current transformers, suitable for standard transformers x/1 A, x/5 A (depending on the device type)
  • Transformation ratio n allows adaptation to all standard current transformers x/1 A, x/5 A
  • Start-up delay, response delay and delay on release
  • Adjustable switching hysteresis
  • r.m.s. value measurement AC
  • Digital measured value display via multi-functional LC display
  • LEDs: Power On, Alarm 1, Alarm 2
  • Fault memory for the operating value
  • Cyclical self monitoring
  • Internal test/reset button
  • Two separate alarm relays with 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
  • Current consumption of motors, such as pumps, elevators, cranes
  • Monitoring of lighting circuits, heating circuits, charging stations
  • Monitoring of emergency lighting
  • Monitoring of screw conveyors, e.g. in sewage plants
  • Dust removal in wood working
  • 70 % agreement in accordance with EEG 2012 for PV inverters

 

可选配件 LINETRAXX® CMD420/CMD421


TypeArt No.
Mounting clip for screw mounting (1 piece per device)B98060008

版本 LINETRAXX® CMD420/CMD421


TypeSupply voltage US*MeasurementResponse valueArt. No.**
CMD420-D-1AC 16…72 V / DC 9,6 V…94 V, 15…460 Hzvia current transformer x/1A0,1…1 A x nB73060006
B93060006
CMD420-D-2 AC/DC 70…300 V 15…460 Hzvia current transformer x/1A0,1…1 A x nB73060007
B93060007
CMD421-D-1 AC 16…72 V / DC 9,6 V…94 V, 15…460 Hzvia current transformer x/5A0,5…5 A x nB73060008
B93060008
CMD421-D-2 AC/DC 70…300 V 15…460 Hzvia current transformer x/5A0,5…5 A x nB73060009
B93060009
* Absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)

下载 LINETRAXX® CMD420/CMD421

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