Insulation Resistance Monitoring Device for AC/DC Systems
This device monitors the insulation resistance of unearthed AC/DC systems up to 1000Vac/dc. When the value falls below preset response values, alarm LEDs light up, with support for two adjustable response values to differentiate between pre-alarm and alarm.





Technical Specifications
Overview
Advanced Insulation Monitoring
The BIM-M1000 is a high-precision insulation monitoring device designed for ungrounded AC/DC IT systems. It ensures operational safety by continuously tracking insulation resistance and detecting faults in battery energy storage, electric vehicles, and DC charging stations. Compliant with international IEC standards, it offers robust communication capabilities and configurable alarm signaling for seamless system integration.
Standards & Compliance
- Compliance Standards
- IEC 61557-1:2018IEC 61557-8:2018
Technical Specifications
Measurement Range
- 100 kΩ to 1 MΩ (CY ≤ 2μF)
- 1 MΩ to 50 MΩ (CY = 0μF)
System Compatibility
- Max System Y Capacitance
- 4 μF
Communication & Alarms
Alarm Signaling
- LED Indicators
- Alarm Relays
Alarm Features
- Communication Interfaces
- RS485CAN Bus
Performance Data
Stabilization Performance
| Condition | Time |
|---|---|
| IRz < 500 kΩ, CY = 0μF | 5 |
| IRz = 1MΩ, CY = 1μF | 8 |
| IRz = 1MΩ, CY = 2μF | 12 |



