Electricity Meters
Class C/D DSZ2931/DTZ2931 Three-phase Three-wire/Four-wire Smart Meter
The DSZ2931/DTZ2931 series three-phase three-wire/four-wire smart meter measures 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 Three-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 C/D active energy accuracy. A high-performance metering chip provides accurate, reliable measurement of instantaneous grid data, including voltage, current and power.
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 | 3 × 220/380V |
| Operating Voltage Range | Specified operating range: 0.8Un–1.2Un Extended operating range: 0.6Un–1.3Un |
| Frequency | 50Hz |
| Current Rating | 0.2-0.5(60)A |
| Accuracy Class | Class C/D active energy; Class 2 reactive 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 | Per phase at reference voltage applied to all three phases: <1.5W, 6VA |
| Dimensions | 290mm (H) × 170mm (W) × 85mm (D) |
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