Description

Technical Parameters

The 3 phase energy meter with rs485 is an intelligent metering device designed specifically for 220V/380V 50Hz three-phase AC scenarios. It adopts microelectronics technology and digital sampling processing solutions, integrating high-precision metering and convenient communication functions. The product supports multiple current ratings ranging from 1.5(6)A to 15(100)A, and can also be customized with parameters according to requirements.

Parameters & Specifications

Parameter	Specification
Voltage	3×220/380V, 3×380V, 3×100V
Frequency	50Hz
Accuracy Class	1.0 or 2.0
Current Ratings	3×1.5(6)A, 3×5(60)A, 3×15(100)A (*Customizable)
Voltage Circuit Power	≤1.0W 5VA (per phase)
Current Circuit Power	≤1VA (Ib per phase)
Operating Temp.	-15℃~+55℃
Storage/Transport Temp.	-25℃~+70℃

Key Features

Measurement:

-Bidirectional active energy measurement (forward/reverse)

-Anti-tampering design (reverse-phase positive counting)

Display:

-High-quality mechanical counter or LCD (clear readability)

Indicators:

-LED pulse output (red) for energy measurement

-Reverse phase sequence indicator (optional)

Interfaces:

-Optically isolated passive pulse output (for calibration/data collection)

-RS485 protocols: DL/T645-97/07, MODBUS

Power Monitoring:

-ABC phase voltage indicators (lights off = phase loss)

Reasons To Choose 3 Phase Energy Meter With Rs485

Remote Data Collection: No on-site manual meter reading required; remote reading of energy data via RS485 communication reduces labor costs and avoids human errors

Centralized Data Management: Multiple meters can be connected to the same monitoring system for centralized storage, analysis and statistics of energy data

High Stability&Anti-Interference: RS485 communication has differential transmission characteristics, strong anti-interference ability, suitable for complex electromagnetic environments such as industry and commerce

Flexible Parameter Configuration: Communication parameters such as meter address and baud rate can be modified remotely without on-site operation, improving maintenance efficiency

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FAQ

Q: What are the possible reasons for no communication after the meter is powered on?

A: Wrong RS485 wiring (e.g., reversed A/B wires); 2. Communication address or baud rate does not match the system; 3. Poor contact or disconnection of communication lines.

Q: What to do if the meter shows phase loss (a phase voltage light is off)?

A: Check if the wiring of the corresponding phase line is loose or disconnected; 2. Troubleshoot whether there is a phase loss fault in the external power grid; 3. If the wiring and power grid are normal, contact professionals to repair the meter's internal voltage detection circuit.

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