AC System and DC System Insulation Monitoring Device Relay for Insulation Ground Fault Monitoring

Product Description

The BIM-CH1 monitors the insulation resistance of DC systems (IT systems) devices up to DC 0- 1000V. BIM-CH1 has insulation monitoring start and stop functions. After insulation monitoring is turned on, it can real time monitor the insulation resistance of the positive and negative poles to the ground. The monitoring results are not affected by DC voltage fluctuations and the symmetry of the insulation resistance of the positive and negative poles.
BIM-CH1 is equipped with RS485 /Modbus communication, which can remotely monitor the system status. BIM-CH1 uses two working principles for monitoring: unbalanced bridge method and balanced bridge method, allowing continuous monitoring of voltage and resistance values. Optional current sensors or temperature sensors can be configured for current and temperature measurements. Feature
Adaptive capacitance to ground; Widely insulation monitoring range (100V~1000VDC); Monitoring the insulation resistance for unearthed DC systems: 1KΩ~10MΩ; Measured value indication via a multi-functional LCD display; Automatic device self-test with disconnection monitoring; DC voltage reverse connection alarm function; RS485 communication, MODBUS RTU protocol; Selectable N/C or N/O relay operation; Password protection to prevent unauthorized parameter changes; Optional temperature sensor for system temperature measurement. Specification

Parameter	Value
Power supply	10-30VDC, Power 3w
DC voltage range	100V~1000V
DC voltage measurement accuracy	≤2V+0.3%
Insulation resistance measurement range	1KΩ~10MΩ (DC System voltage:100V~1000V)
Insulation monitoring accuracy ((When :DC voltage:100V-1000V)	CY range	Resistance range		Accuracy
	0~0.8μF	≤60kΩ		≤3kΩ
		60kΩ<R≤1MΩ		≤5%
	0.8μF ~3μF	≤60kΩ		≤6kΩ
		60kΩ<R≤1MΩ		≤20%
Insulation resistance value update time after turning on	After insulation monitoring is turned on, the time until the effective resistance value can be read for the first time		0.7s~2s
Insulation resistance value update time	Switch the insulation resistance until the module can read the switched insulation resistance value.		0.5s~3s
Insulation monitoring function switching times	50*105 times
Off-line pressure test	<2mA
Standard	IEC 61557-8:2018
Humidity	85%
Storage temperature	- 40°C ~125°C
Operating temperature	- 40°C ~75°C

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