Four-channel three-phase smart energy meter | with Web server | DIN rail mounted | Accuracy class 0.5S | 6 tariffs | MODBUS RTU / TCP | ME431Q4-2

Technical Specifications

Type: 4-circuit smart energy meter / analyzer
Model: ME431Q4-2
Mounting: DIN rail
Communication: MODBUS RS485 (RTU); MODBUS TCP/IP
Integrated web server: Yes
Internal memory: 8 GB eMMC
Accuracy class: 0.5S
Harmonic analysis: Up to the 50th harmonic
Tariffs: 6 tariffs
Relay output: 1 electromagnetic relay
Contact rating: 3 A / 30 V DC, 3 A / 250 V AC
Power supply options (depending on version):
2: 220 V AC (95–265 V AC);
3: 24 V DC (18–36 V DC);
8: 480 V AC (90–528 V AC)

Sensor and Input Support

Q1–Q4: 4 independent measurement circuits; Rogowski coils; VCT / Roche coils; Phases A, B, C, N
Z: Phase sequence sensor (up to 1 circuit)
T: Temperature sensor (up to 1 circuit)
Supported current sensors: Rogowski coils, CT transformers 333 mV
Voltage measurement: Direct or via VT – up to 500 kV

Measured Parameters

Current; Voltage; Active, reactive and apparent power; Electrical energy; Power factor (cos φ); Demand; Maximum and minimum values; Phase angle; Phasor diagram; Phase imbalance; Harmonic spectrum (up to the 50th)

Functions

Measurement of 4 independent electrical circuits in one device
Integrated web server – browser-based access without additional software
MODBUS RTU and TCP/IP – flexible integration
Internal eMMC memory – data logging
Rogowski coil support – installation without power interruption
Harmonic and power quality analysis
Relay output – for alarms and control

Applications

Industrial and commercial facilities: Multi-line, tenant or zone energy metering, monitoring of production lines, energy loss and imbalance analysis
Engineer / system integrator: BMS / EMS / SCADA projects, centralized multi-circuit monitoring, data logging, analysis and remote control
Energy and infrastructure projects: Substations, solar and hybrid energy systems, power distribution nodes

Advantages

4-circuit measurement in one device
Integrated web server
MODBUS RTU + MODBUS TCP/IP
8 GB internal memory
High accuracy (0.5S)
Wide sensor compatibility
Measurement with Rogowski coils without disconnection

Limitations

Rogowski coils not included
Temperature and sequence sensors limited to one circuit
Designed for professional use (not a residential solution)