Class A Single-Phase Smart Gateway Meter (CSG 24 Standard)

A modular meter developed based on the new generation smart meter standard of China Southern Power Grid, achieving separation of legal and non-legal metrology functions.

Product Description

The DDZM208-D/Z/G Class A Single-Phase Smart Gateway Meter (Communication Unit – External Switch) is a modular meter developed by Hexing Electrical Co., Ltd. based on the new generation smart meter standard of China Southern Power Grid. It separates legal and non-legal metrology functions as per IR46 requirements. The meter consists of a metering unit, a management unit, and a communication unit. The metering unit handles legal metrology, the management unit handles non-legal metrology, and the communication unit enables remote data transmission. The metering unit plus communication unit can perform traditional meter functions. The metering unit plus management unit (using the Electric Harmony operating system) plus communication unit can meet the incremental demands of new power systems and new energy systems. The management unit supports functional expansion through edge computing and intelligent analysis, catering to applications such as distributed renewable energy, energy storage, and charging stations. The product has passed sample testing, Electric Harmony certification, and CPA certification organized by China Southern Power Grid.

Product Advantages

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Metering Functions

Measures forward active energy and reverse active energy, supports combined active energy calculation via mode word setting; time-of-use metering.

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Freeze function

Total energy, energy by tariff, combined active cumulative consumption for 24-month settlement; daily freeze (254 days), hourly freeze (254 points), monthly freeze (24 points), timed freeze, instantaneous freeze, and agreed freeze.

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Measurement and monitoring function

Measures, records, and displays current operating parameters such as voltage, current (including neutral), power, power factor, and frequency of the energy meter.

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Event Logging

Records events such as time calibration, programming, power failure, meter reset, cover opening, and breaker opening/closing.

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Time Zones and Tariffs

12 tariff rates including peak, flat, valley, etc.; supports special tariff periods for holidays and weekends.

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Display Functions

Uses a Chinese-character LCD display with configurable display content.

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Alarm Functions

Alarms via symbols displayed on the LCD.

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Remote Tariff Control

Performs effective demand-side control by receiving commands such as breaker open, breaker close, and power protection from the remote master station/electricity sales system, with encryption during the process.

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Communication Functions

Equipped with Bluetooth communication interface, RS485 communication interface, and management unit communication interface. Also supports plug-and-play dual-mode/broadband/4G modules for power line carrier/wireless communication.

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Extended Functions

Through customization of the management unit functions, advanced features such as non-intrusive load identification, carbon-electricity metering, and apparent power measurement can be realized.