ME437-SD: 3-Phase Power Meter

ME631: 3-Phase Power Meter 

ME437

Model Name: ME437-SD

The ME437 Three-phase Power Meter is a multifunction power meter designed for power analysis and energy metering in various applications. Here are the key specifications and features of this device:

Connectivity Advantages:
Support Extra Sensors: It can be connected to external sensors like a 333mV CT (Current Transformer) or a Rogowski coil.

Programmable Digital Output:
It features a relay for digital output.
I/O Function: It has one digital output.
Power Supply: It can operate within a wide voltage range of 85~265V AC/DC.
Storage: The meter comes with a 4GB SD card for data storage, with a default saving interval of 1 minute.

Feature Specification:
Poles Description: The meter supports 3PH4W, 3PH3W, 1PH2W (L-N), 1PH2W (L-L), and 1PH3W (L-L-N) configurations.

Device Application:
It is suitable for power analysis and energy metering.
Input Types: It accepts external CT (333mV only) and External Rogowski coil inputs.
Display: It features a 3.5-inch TFT screen with a resolution of 320x480.
Sampling Rate: The meter samples at a rate of 8k samples per second.
Mounting Mode: It is designed for panel mounting.
Harmonics: It can measure up to the 52nd harmonic.

Display Characteristics:
Display Type: 3.5-inch TFT screen.

Mechanical Characteristics:

Weight: 350g. Dimensions: 96x96x99mm (LWD)
Instantaneous RMS Values:
Voltage: Provides measurements for U, UTH2, UTH3, UTH4 (Per Phase, AVG).
Current: Measures I, ITHD2, ITHD3, ITHD4 (Per Phase, AVG).
Power: Offers measurements for P, FQ, S, PF (Per Phase, SUM).
Energy: Provides measurements for EP, EFQ, ES, Freq (Per Phase, SUM).
Update Rate: Data Acquisition Rate: 400ms. Display Update Rate: 0.5s.
Calibration: Calibration can be performed for current, voltage, power factor, and energy measurements.
Pulse Output: Pulse rate is changeable based on the rated current.

MODBUS RS485 Communication:
It supports MODBUS RTU communication via RS485 port. Communication address, baud rate, parity, data bit, and stop bit can be configured.

Environmental Conditions:
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: Up to 3000m
IP Degree of Protection: IP20
EMC (Electromagnetic Compatibility): The meter complies with various EMC standards.

Measurement Accuracy:
Accuracy specifications are provided for current, voltage, power factor, active/reactive power, frequency, and energy measurements.

Measurement Range:
Voltage: 80V to 400V AC (or 100 to 500V)
Frequency Range: 50/60Hz
Primary Current Range: Varies depending on the CT or Rogowski coil used.
Control Power: AC/DC: 85 to 265V AC/DC, 3.5W
Output: It has one digital output (relay) with specific ratings and insulation properties.
Wire Diameter for Terminals: Connections use screw terminals with a diameter of 2.5mm² and a 5.08mm interval.
Alarm: Alarms can be set for voltage and current.

Data Record:
The meter records data to the SD card in CSV format. Data is recorded at user-defined intervals and includes various parameters related to power, energy, and demand. This power meter is a versatile device suitable for monitoring and analyzing three-phase power systems with multiple measurement capabilities and communication options.

ME631

Model Name: ME631 three-phase Power Meter

The ME631 three-phase power meter is a versatile device designed for various power analysis and tariff metering applications. This power meter is a comprehensive solution for monitoring and analyzing power consumption and can be used in various industrial and commercial settings. It offers flexibility in terms of connectivity and measurement options. Here are some of its key features and specifications:

Model and Connectivity:

Model: ME631P22, ME632P12
Supports extra sensors: 333mV CT, Rogowski coil
Programmable digital output: Alarm, 3 Tariff
I/O function: 1 relay output
Power supply: 85~265V AC/DC or 12VDC
Option: 1GB SD card for data storage (default save interval is 10 minutes)

Features:

Measurement Modes: 3PH4W, 3PH3W, 1PH2W (L-N), 1PH2W(L-L), 1PH3W(L-L-N)
Device application: Power analysis, Tariff meter
Input types: 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 measurement: Up to 52nd harmonic

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

Mechanical Characteristics: Weight: 212g

Dimensions (LWD): 76mm x 95mm x 71mm

Measurement Accuracy:

Current accuracy: 0.5% from 1% to 120% (accuracy not guaranteed when <10A)
Rated current support: 500A (0.5% from 10A to 600A), 3000A (0.5% from 30A to 3600A), 10kA (0.5% from 100A to 12kA)
Rogowski coil specification: 85mV/kA @ 50Hz ± 0.5%
Voltage accuracy: 0.2% from 100V to 500V (L-L and L-N)
Power factor accuracy: ±0.005 from 10% to 120%
Active/Apparent Power: IEC62053-22 Class 0.5
Reactive power: IEC62053-21 Class 2
Frequency accuracy: 0.01% from 45 to 65Hz
Active energy: IEC62053-22 Class 0.5s
Reactive energy: IEC62053-21 Class 2

Measurement Range: Measured voltage: 100V to 500V AC.  Frequency range: 50/60Hz

Input-Current Characteristics:

Primary current range: Adjustable from 0.1A to 9999A
Measurement input range: 1/225mV-333mV
Permissible overload: 600mV for 10 seconds/hours

Control Power: AC/DC: 85 to 265V AC/DC, 3W

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

Wire Diameter for Terminals: Connections-terminals: Screw terminals 2.5mm2, interval 5.08mm

Alarm: Setting: U and I for each phase

Output: Buzzer, Relay