Basic Information

Model: Main Meter ME131M / Sub-Meter ME131S
Installation Method: DIN Rail
Current Sensor: Rogowski Coil, Voltage Output Current Transformer
Core Features: Direct Rogowski Coil Connection Available, Supports Wireless Measurement, Wide Current Range
Wiring System: 3P4W_3CT, 3P3W_3CT, 3P3W_2CT, 1P3W, 1P2W
Application Scenarios: Power Analysis, Energy Consumption Monitoring
Display: None
Weight: ME131M: 122g / ME131S: 59g
Dimensions: ME131M: 9.3×8.0×3.6cm / ME131S: 9.3×8.0×1.81cm
Electrical and Communication Parameters
Table
Item Specifications
Channel Input Voltage 0-900mVAC peak, 636mV RMS
Rogowski Coil Range 50mV/kA@50Hz (0-12000A), 85mV/kA@50Hz (0-7000A), 100mV/kA@50Hz (0-6000A)
Voltage Measurement Range: 0~600VAC
Relay Output: 1-channel electromagnetic relay output, contact capacity: 3A 30V DC / 3A 250V AC
RS485 Communication: Two-wire half-duplex, baud rate 2400~38400bps, Modbus-RTU protocol
Power Supply: 85-265VAC/110-370VDC, 45-60Hz (24V DC power supply can be customized)
Maximum Power Consumption: ≤3.5VA
Measurement Parameters: Instantaneous Values: Phase Voltage / Line Voltage / Zero Sequence Voltage, Current / Zero Sequence Current, Grid Frequency, Power Factor, Fundamental Power Factor, Active / Reactive / Apparent Power (Phase and Total)
Electrical Energy: Positive/Negative Active Energy, Positive/Negative Reactive Energy, Apparent Energy, Time-of-Use Energy (ET1-ET6)
Harmonics: Voltage/Current Harmonic Distortion Rate (Total/Odd/Even/1-50th Harmonics), Harmonic Value, Current K-coefficient
Phase and Imbalance: Phase Sequence, Voltage/Current Phase Angle, Voltage/Current Phase Difference; Voltage/Current Imbalance (Negative Sequence/Zero Sequence Components)
Extrema and Demand: Maximum/Minimum Values ​​of Voltage/Current/Power in Each Phase; Maximum Demand and Time for Total Active/Reactive/Apparent Power