BIM-CH2 Dual Channel Insulation Monitoring Device is designed for online insulation monitoring of two independent DC IT systems with a voltage range of DC 100V to 1000V. It continuously measures the insulation resistance between positive/negative poles and ground in both systems, enabling real-time detection of insulation degradation. When the insulation resistance falls below the preset threshold, the device generates alarm signals to ensure safe and reliable system operation. The device also supports RS485 communication with Modbus-RTU protocol for remote monitoring and system integration.
Based on the bridge circuit principle, the device provides stable and accurate insulation measurement performance. It features LED status indication and a compact DIN-rail mounted housing for easy installation. The product is widely used in DC distribution panels, EV charging systems, UPS systems, energy storage systems, and other DC IT networks.
BIM-CH2 Dual Channel Insulation Monitoring Device is designed for online insulation monitoring of two independent DC IT systems with a voltage range of DC 100V to 1000V. It continuously measures the insulation resistance between positive/negative poles and ground in both systems, enabling real-time detection of insulation degradation. When the insulation resistance falls below the preset threshold, the device generates alarm signals to ensure safe and reliable system operation. The device also supports RS485 communication with Modbus-RTU protocol for remote monitoring and system integration.
Based on the bridge circuit principle, the device provides stable and accurate insulation measurement performance. It features LED status indication and a compact DIN-rail mounted housing for easy installation. The product is widely used in DC distribution panels, EV charging systems, UPS systems, energy storage systems, and other DC IT networks.
| Parameter | Value | ||
| Power supply | 10-30VDC, Power 5W | ||
| DC voltage range | 100V~1000V | ||
| DC voltage
measurement accuracy |
≤2V+0.3% | ||
| Insulation resistance
measurement range |
1KΩ~10MΩ
(DC system voltage:100V~1000V) |
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| Max system leakage capacitance | 0-5μF | ||
| 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 | 4-5s | |
| Insulation resistance value
update time |
Switch the insulation resistance until the module can read the switched insulation resistance value. | 4-5s | |
| Insulation monitoring
function switching times |
50*105 times | ||
| Off-line withstand voltage test | <2mA | ||
| Digital output (DO) | 2*DO, passive dry contact, NO
Load capacity: 4A@250Vac, 4A@30Vdc |
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| Digital input (DI) | 1*DI, 0.25mA@short circuit | ||
| Communication | RS485/ Modbus RTU | ||
| Standard | IEC 61557-1: 2018; IEC 61557-8: 2018 | ||
| Dimension | Standard 35 mm DIN rail mounting
Dimensions (W × H × D): 108 × 110 × 66 mm |
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| Storage temperature | -55°C~90°C; ≤90%RH (non-condensing, non-corrosive), Altitude: ≤3500 m | ||
| Operating temperature | -40°C~75°C; ≤90%RH (non-condensing, non-corrosive), Altitude: ≤3500 m | ||
