View certificate Measuring Instrument Type Approval — DDZY2931-Z / DDZY2931-D
Certificate No. 2026E1154-33
Electricity Meters
Class A DDZY2931-M Single-phase Smart Meter with Tariff Control
The DDZY2931-M series single-phase smart meter with tariff control measures single-phase AC active energy at a rated frequency of 50Hz.
The product complies with GB/T 17215.321-2021, the State Grid 2025 Technical Specification for Single-phase Smart Energy Meters, and other applicable national and industry standards. Its communication protocol complies with DL/T 698.45.
Enquire About This Product01 / PRODUCT FEATURES
Product at a glance
Energy Measurement
- Class A active energy accuracy. A high-performance metering chip provides accurate, reliable measurement of instantaneous grid data, including voltage, current and power.
Load Switching Control
- A built-in load switch supports connection and disconnection for tariff control.
Communication Interfaces and Modules
- A standard communication module interface supports interchangeable communication modules. RS485 and infrared communication interfaces are also provided.
LCD Display
- A reliable LCD provides a wide viewing angle, high contrast and UV resistance.
Time-of-use Tariff Management
- Supports multi-tariff time-of-use metering and configuration of special time periods for holidays.
Wide Measurement Range
- Measures across a wide current range, from starting current to maximum current.
Event Records
- Comprehensive event records support historical data review and traceability.
Historical Data Storage
- Supports load recording at configurable intervals of 1 to 60 minutes, monthly billing records and daily frozen data.
Abnormal Event Detection
- Detects meter-cover opening, terminal-cover opening and magnetic influence.
02 / SPECIFICATIONS
Technical specifications
| Description | Value |
|---|---|
| Reference Voltage | 220V |
| Operating Voltage Range | Specified operating range: 0.9Un–1.1Un Extended operating range: 0.8Un–1.15Un |
| Frequency | 50Hz |
| Current Rating | 0.25-0.5(100)A |
| Accuracy Class | Class A active energy |
| Operating Temperature | Normal operating temperature: -25°C to +60°C Extreme operating temperature: -40°C to +70°C |
| Relative Humidity | ≤95% (non-condensing) |
| Clock Accuracy | ≤0.5 s/day at 23°C Within ±1 s/day over -25°C to +60°C |
| Static Power Consumption | ≤1.5W/10VA |
| Dimensions | 160mm (H) × 112mm (W) × 71mm (D) |
03 / CERTIFICATIONS
Product certifications
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