| Customization: | Available |
|---|---|
| Testing Voltage: | 30 to 500V |
| Operating Temperature: | 20 |
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ZJJ-101B DC system grounding resistance monitoring device
The ZJJ-101B DC ground fault monitor is used for real-time online monitoring of the insulation status of the DC bus and branch. This device adopts the detection method of DC balance resistance. The DC ground fault protection device does not generate any AC or DC interference signground fault monitor to the busbar, and will not cause the artificial insulation resistance to drop. This ground fault relay ungrounded system is suitable for power plants and substations of any voltage level.
1.ZJJ-101B's unique stability and anti-distribution capacitance characteristics make it more suitable for busbar systems under complex conditions. The standard instrument structure is compact, easy to install and has better applicability.
2.ZJJ-101B has liquid crystal display, full software function control, perfect man-machine interface, easy to master operation and use.
3. Modular international standard industrial controller structure, standard housing, small size, light weight, easy installation and maintenance;
4. Single/double busbars up to 64 loop monitoring, DC balance resistance detection method, no busbar interference;
5. The branch road is quickly detected, and the inspection time is less than 20 seconds;
6. The measurement result is not related to the busbar distributed capacitance; automatic/manual inspection branch;
7. DC leakage current sensor configuration is flexible and convenient;
8. Isolate the RS-485 communication interface, and the MODBUS/ Emerson communication protocol is fully compatible;
9. Monitoring data: double-segment bus voltage value, double-segment bus positive-negative terminal-to-ground voltage value, double-segment busbar positive-negative-to-ground resistance value; branch number, branch insulation resistance value; alarm item: busbar insulation alarm; Branch grounding alarm; bus over and under voltage alarm.
10. Operation: This machine only has two buttons of "up" and "down". All functions and settings can be completed by these two buttons. Press the "Up" button to switch between the 1 segment/2 segment parameter display; press the "Down" button to display the branch resistance.Press the "Up" and "Down" buttons at the same time to directly inspect the branches.
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Input voltage |
24V, 48V, 110V, 220V |
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Accuracy |
±0.5% |
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Bus resistance range |
0~999KΩ |
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Bus resistance accuracy |
±5% |
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Branch resistance range |
0~100KΩ |
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Accuracy of branch resistance |
±5% |
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Branches per section |
0~64 |
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Rated power consumption |
3W |
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Operating temperature |
-10~50 |
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Alarm contact capacity |
220V 0.2A |
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