BIM-M1000 is designed to monitor the insulation resistance of unearthed AC, AC/DC and DC systems (IT systems) up to AC/DC 1000V. The device generates ±15V pulsating measuring voltage, this is injection on the IT system to be monitored via terminals L1/L2 and Earth. When the value falls below the preset response values, the alarm LEDs light up. The device support two separately adjustable response values allow a distinction to be made between “pre-alarm” and “alarm”.
BIM-M1000 complies with IEC 61557-1:2018 and IEC 61557-8:2018 standards and is suitable for AC/DC IT systems, battery energy storage, electric vehicles, DC charging stations, and other scenarios. It also supports RS485 and CAN bus communication, facilitating integration into remote monitoring systems.
BIM-M1000 is designed to monitor the insulation resistance of unearthed AC, AC/DC and DC systems (IT systems) up to AC/DC 1000V. The device generates ±15V pulsating measuring voltage, this is injection on the IT system to be monitored via terminals L1/L2 and Earth. When the value falls below the preset response values, the alarm LEDs light up. The device support two separately adjustable response values allow a distinction to be made between “pre-alarm” and “alarm”.
BIM-M1000 complies with IEC 61557-1:2018 and IEC 61557-8:2018 standards and is suitable for AC/DC IT systems, battery energy storage, electric vehicles, DC charging stations, and other scenarios. It also supports RS485 and CAN bus communication, facilitating integration into remote monitoring systems.
| Supply voltage | |
| Power supply | 9~30Vdc, power consumption ≤ 2W |
| Frequency range | 40~65Hz |
| Monitored IT system | |
| Nominal system voltage | 3(N)AC, AC/DC 0…1000 V |
| Frequency range | 40~65Hz |
| Insulation resistance | |
| Insulation resistance
measurement range |
0~50MΩ |
| Insulation resistance
measurement accuracy |
0~100 KΩ, CY≤ 2μF, Bus voltage stability: ±12 KΩ
100 kΩ~1 MΩ, CY≤ 2μF, Bus voltage stability: ±10 % 1 MΩ~50 MΩ, CY =0μF, Bus voltage stability: ±10 % |
| DC equivalent
internal resistance |
Power on: 10.2 MΩ |
| Measuring circuit | |
| Injection measuring voltage | ±15V |
| Injection measuring current | <110 µA |
| Injection pulse signal frequency | Self-adaptive, depending on the Y-capacitance (CY) value and insulation resistance value. |
| Permissible system
leakage capacitance |
≤4 μF |
| Alarm output (optocoupler) | |
| Max. switching current | >100mA |
| Max. withstand voltage | 12Vdc |
| Pre-alarm threshold | Default 1000Ω, 0-5000Ω adjustable, But must< alarm value |
| Alarm threshold | Default 500Ω, 0-5000Ωadjustable |
| Overvoltage detection | 0-1000V |
| Safety | |
| High to low voltage
withstanding voltage |
3 500 Vd.c. 2 500 Va.c.(rms) |
| CAN to high voltage
withstanding voltage |
3 500 Vd.c. 2 500 Va.c.(rms) |
| Communication | |
| RS485 interface | Modbus RTU protocol |
| Canbus interface | Custom protocol |
| Environment | |
| Working temperature | – 40°C ~85°C, humidity: 5~95%RH |
| Storage temperature | – 40°C ~85°C, humidity: 5~95%RH |
| Others | |
| Standards | IEC 61557-1:2018 and IEC 61557-8:2018 |
| Installation method | Standard 35mm Din-rail mounting |
| Dimension | W*H*D: 108*110*66mm |
BIM-M1000 Wiring diagram in AC system
BIM-M1000 Wiring diagram in AC/DC system
