BIM-CH1 Insulation Monitoring Device

Feature

Adaptive capacitance to ground;
Widely insulation monitoring range (100V~1000VDC);
Monitoring the insulation resistance for unearthed DC systems: 0KΩ~10MΩ;
Two working modes: balanced bridge method, used to monitor the voltage value to the ground / unbalanced bridge method, used to monitor the insulation resistance to the ground;
Measured value indication via a multi-functional LCD display;
Automatic device self-test with connection 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.

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)	C_Y 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

Withstand voltage test