The module is mainly used to measure the relevant power parameters of the three-phase AC power frequency power grid, the module
does not have a display function, and the measurement data can be read through UART or RS485 interface.
Voltage: 50~220/380V
Current: 0~100A
It supports TTL/485 communication and MODBUS protocol
Hardware/software address modification is supported
File :Peacefair_Power_System.rar shared via network disk
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Extraction code: dp6y
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Parameter | Min | Typical | Max | Accuracy | Unit | Remarks |
Voltage | 50 | 220/380 | 566 | 1% | V |
|
Current | 0 |
| 100A | 1% | A |
|
Frequency | 45 | 50/60 | 65 | 1% | HZ |
|
Active Power | 0 |
| 38 | 1% | kW |
|
Reactive Power | 0 |
| 38 | 1% | kVar |
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Apparent Power | 0 |
| 38 | 1% | kVA |
|
Power Factor (PF) | 0 |
| 1 | 1% | PF |
|
Active Energy | 0 |
| 399999999.9 | 1% | kWh |
|
Reactive Energy | 0 |
| 399999999.9 | 1% | kVarh |
|
Apparent Energy | 0 |
| 399999999.9 | 1% | kVAh |
|
Phase | 0 |
| 360 |
| ° |
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Pulse Constant (CF) |
| 1000 |
|
| imp/kWh | 10ms open-drain output (pull-up resistor required) |
Baud Rate | 2400 | 9600 | 115200 |
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UART Working Voltage |
| 3.3 |
|
| V |
|
RS485 Working Voltage |
| 3.3 |
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| V |
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UART Working Voltage(External) | 3 | 5 | 5.5 |
| V | when needed |
RS485 Working Voltage(External) | 3 | 5 | 5.5 |
| V | when needed |
UART Output Current | 60 | 80 | 100 |
| mA |
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RS485 Output Current | 60 | 80 | 100 |
| mA |
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Device Address (dialing code) | 1 | 1 | 32 |
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Device Address (Software Setting) | 1 | 1 | 247 |
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| 0 broadcast 248-255 reserved |
Whole machine power consumption | 0.2 | 0.3 | 0.5 |
| W |
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Operating Temperature | -20 | 23 | 60 |
| ℃ |
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Weight(Only PCB) |
| 51 |
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| g |
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Weight(Only Host) |
| 107 |
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| g |
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Three-Phase AC Power Measurement Module
This dedicated module is designed for comprehensive measurement of key electrical parameters within three-phase, 50/60 Hz AC power
grids (typical utility or industrial mains). It serves as a data acquisition unit, lacking an integrated display.
Key Measurement Capabilities:
* Voltages: Accurately measures RMS phase-to-neutral and/or phase-to-phase voltages. Supported Range: 50V to 566V (Phase-Neutral)
220V / 380V
* Currents: Measures RMS current per phase using external current transformers (CTs) or shunts. Supported Range: 0A to 100A
* Power Parameters: Calculates essential power metrics including:
* Active Power (W) per phase and total
* Reactive Power (VAR) per phase and total
* Apparent Power (VA) per phase and total
* Power Factor (PF) per phase and total
* Frequency (Hz) of the grid
* Energy Consumption (kWh) - Active Energy (Import/Export), Reactive Energy (typically)
Data Access & Communication:
* Interfaces: Equipped with dual communication interfaces:
1. UART (TTL-Level): Direct serial connection (typically 3.3V or 5V logic) for simple integration with microcontrollers (e.g.,
Arduino, Raspberry Pi) or local logic.
2. RS485: Robust differential serial bus standard for long-distance communication (up to 1200 meters) and operation in
electrically noisy environments. Enables connection to SCADA systems, PLCs, HMIs, or data loggers.
* Protocol: Implements the widely adopted MODBUS RTU protocol over both UART and RS485 interfaces. This standardized protocol
allows seamless integration with a vast ecosystem of industrial automation and monitoring software. Common function codes
Configuration & Addressing:
* MODBUS Address Assignment: Supports flexible configuration of its MODBUS Slave Address.
* Hardware Modification: Address can often be set via physical means such as DIP switches or jumper blocks on the module.
* Software Modification: Address can also be configured via software commands sent over the UART or RS485 interface (using
specific MODBUS function codes or a proprietary configuration protocol), allowing for remote or programmatic setup.
Typical Applications:
* Energy monitoring systems
* Power quality analysis
* Industrial automation control panels
* Smart grid applications
* Building Management Systems (BMS)
* Embedded systems requiring grid parameter data
Key Features Summary:
* Measures 3-Phase Voltage, Current, Power (Active/Reactive/Apparent), Power Factor, Frequency, Energy.
* Wide Voltage Input Range: 50-220V (L-N) / 380V (L-L).
* High Current Input Range: 0-100A (via CTs/shunts).
* Dual Communication: TTL-Level UART & RS485.
* Industry-Standard MODBUS RTU Protocol.
* Configurable MODBUS Address (Hardware & Software Methods).
* Headless Design (No Display).
Company Introduction
Ningbo Peacefair Electronic Technology Co., Ltd. is founded in 2 0 1 4. The area of the factory is 1800square meters, has two assembly line. We are a professional manufacturer engaged in the research, development, production, sale and service of AC and DC Electric digital power meter, Voltage meter and Energy meter. Our products have the patent and C E, F C C certificates. 
Three-Phase AC Power Measurement Module
中文
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