BIM-M1000 Insulation Monitoring Device for AC/DC system

Feature

Insulation monitoring of unearthed AC/DC system;
Measure single-pole insulation fault in DC system (DC+ to earth and DC- to earth);
Measure DC system-to-ground insulation fault (DC+ and DC- to earth);
Measurement system-to-ground insulation fault in AC system (L1 and L2 to earth);
Two separately configurable response values;
Alarm signaling via LEDs and alarm relays;
Comply with standards IEC 61557-1/ IEC 61557-8;
With overvoltage alarm function;
Automatically adapt to system Y capacitance ≤4 μF

Application

AC and DC IT power distribution systems;
Industrial power and automation;
Marine electrical power distribution network systems;
Battery packs and energy storage systems;
Electric vehicles and transportation;
Renewable energy power generation systems;
DC charging stations for electric vehicles;

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, C_Y≤ 2μF, Bus voltage stability: ±12 KΩ 100 kΩ~1 MΩ, C_Y≤ 2μF, Bus voltage stability: ±10 % 1 MΩ~50 MΩ, C_Y =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	WHD: 10811066mm

Dimension

Wiring Diagram

BIM-M1000 Wiring diagram in AC/ DC system

In DC system:

Connect terminal +, – to positive (+) and negative (-) terminals of DC busbar.

In AC system (Support single and three phase)

Single-phase: Connect L1 and L2 terminals to the corresponding L1 and L2 of the system.
Three-phase: Connect L1 and L2 terminals to any two of the three phases (L1, L2, or L3).