ME631 Three-Phase Power Meter for AC Electrical Power Systems

The ME631 3-Phase Power Meter is a compact, multifunctional device designed to measure and analyze electrical power in systems that use AC (alternating current). It can be used in industrial and commercial settings to monitor power usage and efficiency.

Features

Measures Electrical Parameters
It tracks important data like voltage, current, power, energy usage, power factor (how efficiently power is being used), and Total Harmonic Distortion (THD), which helps monitor the quality of power.

Support for External Sensors
It can be connected to external sensors (like CT sensors or Rogowski coils) for more detailed measurements, especially in high-current systems.

Communication
It has an RS485 port for communication, supporting the MODBUS RTU protocol, which allows it to send data to a central system for analysis.

Data Recording
It can record data over time, making it useful for tracking long-term energy consumption patterns or for troubleshooting issues.

Customizable Alerts
It has a relay output and an alarm system that can trigger warnings for various conditions (e.g., overcurrent, overvoltage).

Applications

Power Monitoring & Energy Management
It’s ideal for companies or industries needing to track energy usage for cost management or efficiency improvement. You can monitor multiple parameters like power, current, and voltage to understand and optimize energy consumption.

Tariff Metering
Businesses that need to manage electricity costs based on different time-of-use tariffs will benefit from this meter. It can be programmed to handle multiple tariffs for different times or conditions.

Harmonic Monitoring & Power Quality Analysis
The ME631 can track THD (Total Harmonic Distortion), which is important in ensuring the power supply is clean and stable, avoiding equipment damage or inefficiencies caused by poor-quality electricity.

Industrial Power System Analysis
In factories or large equipment setups, this meter helps in analyzing power systems to ensure everything is operating within safe parameters and to catch potential faults early.

Specifications
Product component type: Multifunction power meter
Parameters 
Instantaneous rms Values, Update rate, Calibration, Record (if ordered please add -SD in model No),Settings, EMC, Input-current characteristics.
Poles description: 3PH4W. 1PH2W (L-N). 3PH3W. 1PH2W(L-L) 1PH3W(L-L-N)
Input type: External CT(333mV only): External Rogowski coil
Display: 2.0 inch TFT screen display
Sampling rate: 8k samples per second
Mounting mode: Clip-on
Mounting support: DIN rail
Harmonic: 52th Max

Displays 
Dimensions (VA): 39mm x 32mm
Display resolution: 220 x 170 dots

Mechanical
Weight: 212g
Dimension: L*W*D:76*95*71mm
Values measured : Voltage, Current, Power, Power Factor, THD, Energy

Connectivity 
Support Extra sensor: 333mV CT / Rogowski coil
Programmable digital output: Alarm / 3 Tariff
I/O function: 1*relay output
Power: 85~265V AC/DC
Rogowski coil specification: 85mV/kA@50Hz± 0.5%

Communication 
Transmission mode: RS485 port, Half duplex
RS485 link: 2 wires
Communication protocol: MODBUS RTU

Environmental 
Operating temperature: -25℃ to +55℃
Storage temperature: -40℃ to +85℃
Humidity rating: 5 to 95% RH at 50℃(non-condensing)
Pollution degree: 2
Overvoltage category: III, for distribution systems up to 277/480VAC
Dielectric withstand: As per IEC61010-1, Doubled insulated front panel display
Altitude: 3000m Max
IP degree of protection: IP20 conforming to IEC 60629
Colour: White
Contractual warranty: 12months

Compliance: EN 62052-11,EN61557-12,EN 62053-21,EN 62053-22,EN 62053-23,EN 50470-1,EN 50470-3,
EN 61010-1,EN 61010-2,EN 61010-031

Measurement Accuracy
Current: 0.5% from 1% to 120%(don’t ensure accuracy when <10A)
Rogowski coil specification: 85mV/kA@50Hz± 0.5%
Voltage: 0.2% from 100V to 500V(L-L and L-N)

Measurement 
Measured voltage: 100V to 500V AC
Frequency range: 50/60Hz
POWER: AC/DC 85 to 265V AC/DC, 3W

Output 
1× digital output(2 ports)(controlled by Modbus)
2.5kVrms insulation
Maximum Switching Power ：
10A, 277VAC
10A, 28VDC
Alarm Output form: Buzzer, Relay