ZJJ DC insulation monitoring relay monitorsthe insulation of the DC bus, and it sendsalarm signal when the bus-to-groundinsulation drops to a certain value,also it ispanel mounted type,and the relay has a high-sensitivity grounding resistance monitoringand display circuit, it is great significance forthe safe operation of the DC system.
·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.
MODELS
| 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 | |
