Blue Jay BIM-M1000 Insulation Monitoring Device for AC DC system
BIM-M1000

BIM-M1000 Insulation Monitoring Device for AC/DC system

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 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.

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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

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

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;

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