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LHJYJC DC Insulation Intelligent Monitoring System
LHJYJC DC Insulation Intelligent Monitoring System
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  • LHJYJC DC Insulation Intelligent Monitoring System
  • LHJYJC DC Insulation Intelligent Monitoring System

LHJYJC DC Insulation Intelligent Monitoring System

1. Product introduction LHJYJC type DC insulation intelligent detection system adopts non-contact intelligent magnetic modulation DC micro current sensor to detect the leakage current generated by the grounding of the positive and negative busbars of the DC system and the voltage of the busbar to the ground. The unique algorithm is used to measure the double end of the busbar at the same time. Ground resistance to ground to determine the ground fault of the bus. This technology does not need to superimpose any signal on the busbar, and will not have any adverse effect on the power supply of the DC system, completely eradicate the double-ended insulation at the same time, and the misjudgment and leakage judgment caused by the distributed capacitance of the busbar to the ground, and greatly improve at the same time. The accuracy and speed of the detection; while ensuring the accuracy, the insulation instrument also has a wide voltage range, suitable for 200---1000V DC system; it is an ideal device for detecting insulation resistance.

Category: Product Center

Key words: equipment


Product Description

1. Product introduction
LHJYJC type DC insulation intelligent detection system adopts non-contact intelligent magnetic modulation DC micro current sensor to detect the leakage current generated by the grounding of the positive and negative busbars of the DC system and the voltage of the busbar to the ground. The unique algorithm is used to measure the double end of the busbar at the same time. Ground resistance to ground to determine the ground fault of the bus. This technology does not need to superimpose any signal on the busbar, and will not have any adverse effect on the power supply of the DC system, completely eradicate the double-ended insulation at the same time, and the misjudgment and leakage judgment caused by the distributed capacitance of the busbar to the ground, and greatly improve at the same time. The accuracy and speed of the detection; while ensuring the accuracy, the insulation instrument also has a wide voltage range, suitable for 200---1000V DC system; it is an ideal device for detecting insulation resistance.
2. System functions and features
◆ Real-time monitoring and branch inspections are combined to ensure real-time monitoring
◆High measurement accuracy: bus-to-ground voltage is better than 0.2%, busbar and branch-to-ground resistance is better than 5%
◆ Large detection range: maximum detectable 100K resistance
◆ Fast response time: 5s alarm for busbar, branch is less than or equal to 1S per branch; (Note: when there is no distributed capacitance)
◆ RS485 serial port communicates with monitoring host computer. Customizable host computer communication protocol is convenient for other manufacturers to monitor access
◆The alarm limit can be set by monitoring to adapt to the climatic conditions of different regions; the falling of the insulation of the positive and negative busbars can be monitored.
◆Injecting low-frequency AC signal is cancelled, branch detection is not affected by bus-to-ground capacitance; innovative isolation intelligent leakage current sensor vulnerable circuit is continuously replaced with design scheme to effectively solve the problem that DC sensor can not be replaced by live power.
◆EMS performance complies with IEC61000-6-2 industrial environmental immunity standard; products comply with EU ROHS lead-free standards, CE certification
3. Technical indicators
◆Power supply mode: AC220V
◆Power consumption of the whole machine: ≦20W
◆Communication mode: RS485/ odd parity/9600BPS/8-bit data bit/1 stop bit
◆Voltage measurement range: 0-1000V
◆Resistance measurement range and accuracy: 0-50KΩ, ±5%; 50-100KΩ, ±10%
◆Insulation resistance alarm value: 5-70KΩ adjustable
◆ Bus alarm time: 5S (default) tributary alarm time: 64S (default)
◆Automatic switching resistance time: 24H (default)
◆Size (L×W×H): 260*120*35MM
LHJYJC DC Insulation Intelligent Monitoring System
General schematic