BIM-M1000 is designed to monitor the insulation resistance of unearthed AC/DC systems (IT systems) up to 1000Vac/dc. The device generates ±15V pulsating measuring voltage to injection on the IT system. When the value falls below the preset response values, the alarm LEDs light up. The device supports two separately adjustable response values, allowing 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 RS-485 and CAN bus communication, facilitating integration into remote monitoring systems.
Specification
| Supply voltage | |
| Power supply | 9~30Vdc, power consumption ≤ 2W |
| Frequency range | 40~65Hz |
| Monitored IT system | |
| Nominal system voltage | 0…1000 Vac/dc |
| 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 % |
| IR response time | IRz≥ 500 kΩ, CY = 0μF, bus voltage stabilizes for 4s IRz < 500 kΩ, CY = 0μF, bus voltage stabilizes for 5s IRz = 1MΩ, CY = 1μF, bus voltage stabilizes for 8s IRz = 1MΩ, CY = 2μF, bus voltage stabilizes for 12s |
| DC equivalent internal resistance | Power on: 10.2 MΩ |
| High voltage input internal resistance | |
| When powered on (internal high-voltage relay closed) | Positive and negative poles to earth: 5.1 MΩ respectively |
| When powered off or not operating (internal high-voltage relay opened) | Positive and negative poles to earth: > 500 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 | ≤4μF |
| 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, 0-5000Ω adjustable |
| 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 |
| Storage temperature | – 40°C ~85°C, humidity: 5~95%RH |
| Others | |
| Standards | EC 61557-1:2018 and IEC 61557-8:2018 |
| Installation method | Standard 35mm Din-rail mounting |
| Dimension | W*H*D: 108*110*66mm |
