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Technology of Electrical Automatic

MPR-6M Multifunction Protection Relay

MPR-6M Multifunction Protection Relay

The MPR-6M Multifunction Protection Relay is suitable for circuit protection and monitoring of electrical lines and distribution cabinets. It can monitor various parameters in real time, such as current, voltage, power, and electric energy. It is particularly ideal for safety protection of critical power supply lines, fire power distribution, industrial power cabinets, computer rooms, and intelligent building power distribution systems.

The device has a built-in Class 0.2 high-precision measurement unit, with standard 2 channels DO output, 2 channels DI input, 4 channels temperature sensors, and 2 channels residual current monitoring. Via RS485 communication, it can upload data to SCADA, EMS, and smart operation and maintenance platforms. It also features functions like sound and light alarm, remote control, and automatic tripping.

The MPR-6M Multifunction Protection Relay is suitable for circuit protection and monitoring of electrical lines and distribution cabinets. It can monitor various parameters in real time, such as current, voltage, power, and electric energy. It is particularly ideal for safety protection of critical power supply lines, fire power distribution, industrial power cabinets, computer rooms, and intelligent building power distribution systems.

The device has a built-in Class 0.2 high-precision measurement unit, with standard 2 channels DO output, 2 channels DI input, 4 channels temperature sensors, and 2 channels residual current monitoring. Via RS485 communication, it can upload data to SCADA, EMS, and smart operation and maintenance platforms. It also features functions like sound and light alarm, remote control, and automatic tripping.

Feature

  • Class 0.2, real-time measurement of key electrical parameters;
  • 2 channels relay outputs (custom logic);
  • 2 channels passive digital inputs;
  • 4 channels temperature monitoring (equipment/cabinet protection);
  • 2 channels residual current detection (electrical fire detection);
  • Supports RS485 Modbus RTU communication;
  • Built-in sound-light alarm; manual mute/reset/self-test;

Application

  • Feeder protection/monitoring in low-medium voltage systems;
  • Industrial cabinet: electrical fire prevention & fault isolation;
  • Protection for transformers, generators, motors;
  • Data acquisition for SCADA, EMS, power management platforms;

Specification

Working power
Power grid mode 1P2W, 3P3W, 3P4W
Power supply 85-265VAC/DC, 45-65Hz
Consumption ≤5VA
Data refresh frequency 1S
Voltage input
Rated value 100V/220V/380V
Overload 1.2Un
Power consumption <0.2VA
Impedance 0.5MΩ
Current input
Rated value 1A/ 5A AC (please specify when ordering)
Overload Measurement: 1.2 times Instantaneous: 10 times/3s
Power consumption <0.1VA
Impedance <20MΩ
Accuracy
Voltage, current 0.2
Power 0.2
Residual current 1%
Temperature ±2℃
Frequency ±0.02Hz
Active energy 0.5S
Harmonic content When Uh>2%: 5%Uh; when Uh<=2%: 0.1%UN
I/O capacity
DI 2 channels, dry contact, Ri<500Ω turns on, Ri>100kΩ turns off,

isolation voltage: 2000VAC

DO 2 channels, contact capacity: 5A@250VAC; 5A@30VDC, isolation voltage: 2500VAC
Communication RS485, Modbus-RTU, baud rate 1200-9600bps
Pulse output 1 channel, pulse width 80ms, photoelectric isolation
Safety
Pollution degree 2
Overvoltage category CAT III@277/480VAC
Insulation capability 2kV AC RMS 1 minute, between input / output / case / power supply
EMC test
Discharge immunity test IEC-61000-4-2 level 4 @8kV
Fast transient burst immunity test IEC61000-4-4 level 3 @Input 1kV; Power supply 2kV
Surge (Shock) immunity test IEC61000-4-5 level 4 @Common mode: 4kV
Environment
Working temperature -10°C ~ +55°C; RH 5% ~ 95% (non-condensation)
Storage temperature -40°C ~ +85°C; RH 5% ~ 95% (non-condensation)
Others
SOE record Total 60 lists, (30 lists DI/DO SOE and 30 lists Alarm SOE)
Dimension 110mm×108mmx66mm (W*H*D), 35mm Din-rail mounting

Dimension

6P dimension

Wiring method

Wiring method of MPR-6M

Download

MPR-6M- User Manual-V1.10