Technology of Electrical Automatic

ZJJ Series Insulation Monitoring Relay

ZJJ Series Insulation Monitoring Relay

ZJJ Series Insulation Monitoring Relay monitors the insulation of the DC bus, and it sends an alarm signal when the bus-to-ground insulation drops to a certain value. Besides, it is panel mounted type, and the ZJJ insulation monitoring relay has a high-sensitivity grounding resistance monitoring and display circuit, which is of great significance for the safe operation of the DC system.

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ZJJ Series Insulation Monitoring Relay monitors the insulation of the DC bus, and it sends an alarm signal when the bus-to-ground insulation drops to a certain value. Besides, it is panel mounted type, and the ZJJ insulation monitoring relay has a high-sensitivity grounding resistance monitoring and display circuit, which is of great significance for the safe operation of the DC system.

Category:

ZJJ Insulation Monitoring Relay Features

  • Monitoring of the DC circuit bus barinsulation resistance RF to earth.
  • LCD screen display resistance value.
  • Bridge balance method for resistancemeasurement.
  • Adjustable response value ranges of 0-100kΩ.
  • Smaller short-circuit grounding current forsafe operation.

Specification

Model ZJJ-4S
Input voltage 300-1200VDC
Power supply voltage 90-150VDC
180-300VDC
Power supply current 7-20mA
Operating temperature -40°C ~ 70°C, 85%
Measuring resistance 0~199.9KΩ
Precision V=220V (5%)
Short circuit ground current V=220V (2mA)
Alarm setting range 0~100KΩ
Action return factor Rs=50KΩ(95%-98%)
Output contact capacity Sensitive load=5mS(DC220V0.2A)
Resistive load(DC220V 2A)
Installation type Panel mount

Dimensions

Dimensions of ZJJ Insulation Monitoring Relay

Downloads

Brochure of DC Insulation Monitor Device