Class A single-phase smart IoT electricity meter (State Grid)
A smart electricity meter featuring energy metering, data processing, real-time monitoring, automatic control, environmental sensing, information exchange, and communication routing.
Product Description
The DDZM208-M series Class A single-phase smart IoT electricity meter consists of a metering module, management module, and expansion module. It features energy metering, data processing, real-time monitoring, automatic control, environmental sensing, information exchange, and communication routing, and is designed to meet IoT requirements. Manufactured with advanced microelectronics technology and SMT production processes, it offers high accuracy, strong functionality, and good stability. Its communication protocol complies with DL/T698.45 “Electric Energy Information Acquisition and Management System Part 4-5: Communication Protocol – Object-Oriented Data Exchange Protocol” standard requirements.
Product Advantages
Metering Functions
Forward/reverse active energy metering with configurable active energy combination mode; time-of-use metering; forward/reverse fundamental and harmonic energy metering.
Freeze function
Daily freeze, hourly freeze, scheduled freeze, instantaneous freeze, preset freeze, and minute freeze.
Measurement and monitoring function
Measures operating parameters such as voltage, current, power, power factor, and frequency.
Event recording function
Records events including time synchronization, programming, power failure, meter reset, cover opening, breaker open/close, clock battery replacement, self-monitoring error exceeding limits, residual current monitoring alarm, load switch misoperation, and terminal block temperature exceeding limits.
Display Functions
Features a large-screen LCD with Chinese characters and backlight. Display content can be toggled via buttons, and display items are flexibly configurable.
Fault indication function
Indicates faults through relevant symbols or characters on the LCD.
Remote demand control function
The meter receives remote commands such as breaker open, close, and power hold from the master station via communication, enabling effective demand control with secure authentication and encryption.
Communication Functions
Supports Bluetooth communication, supporting at least two masters and three slaves in a master-slave coexistence mode.
Communication module interface
Supports 1 uplink module (e.g., carrier communication module, micro-power wireless communication module) and 2 expansion modules (e.g., load identification communication module, power quality communication module).
Remote upgrade
The metering module is separated from the management module, and the management module supports remote software upgrade.
Other functions
Terminal block temperature monitoring, multi-core modular operation monitoring, etc.
Class A single-phase smart IoT electricity meter (State Grid)
DDZM208-M
DDZM208-M Series
| Standards | Q/GDW 10364-2020, DL/T698.45 |
| Reference Voltage | 220V |
| Current Specification | 0.25-0.5(100)A |
| Accuracy Class | Active Energy Class A; Reactive Energy Class 2; Fundamental Active Energy Class A; Harmonic Active Energy Class 5 |
| Frequency Range | 50Hz |
| Operating Voltage Range | 0.8Unom~1.15Unom |
| Operating Temp. Range | -40℃~+70°C |
| MTTF | ≥16 years |
| Outline Dimensions | L×W×H=160mm×112mm×71mm |