Class C/D Three-Phase Smart Energy Meter (State Grid 2020 Standard)
A high-precision smart energy meter integrating metering, demand, display, freeze, and communication functions.
Product Description
The DSZ208/DTZ208 series three-phase smart energy meters utilize advanced energy metering chips, built-in temperature-compensated hardware clocks, and ESAM security encryption chips. Manufactured with advanced microelectronics technology and SMT processes, they integrate metering, alarm, display, freeze, and communication functions to achieve user energy metering and information storage. They feature high accuracy, strong functionality, and excellent stability, fully complying with the State Grid 2020 edition technical, functional, type, and safety specifications for three-phase smart energy meters, with communication protocols meeting DL/T698.45 standards.
Product Advantages
Metering Functions
Forward/reverse active energy metering, four-quadrant reactive energy metering, and configurable combined active/reactive energy.
Time-of-use metering, total and per-tariff maximum demand and occurrence time.
Time-of-use metering, total and per-tariff maximum demand and occurrence time.
Billing Freeze
Forward/reverse active energy and demand settlement for 13 months.
Daily freeze, hourly freeze, scheduled freeze, instantaneous freeze, scheduled freeze, and minute freeze.
Daily freeze, hourly freeze, scheduled freeze, instantaneous freeze, scheduled freeze, and minute freeze.
Measurement and Monitoring Functions
Measures operating parameters such as voltage, current, active power, reactive power, and power factor.
Event Recording Functions
Records events including voltage loss, undervoltage, phase loss, current loss, current interruption, overcurrent, overload, total voltage loss, reverse phase sequence, reverse power flow, demand over-limit, voltage/current unbalance, power factor below threshold, time synchronization, programming, power failure, meter reset, cover opening, and breaker closing/opening.
Time-of-Use and Tariff Functions
Up to 8 tariffs, supports switching between current and backup tariff schedules.
Supports special tariff schedules for public holidays and weekends.
Supports special tariff schedules for public holidays and weekends.
Display Functions
Large-screen Chinese-character LCD with backlight, display content switchable via buttons, and flexible configuration of display items.
Fault Indication
Displays fault indications via LCD symbols or characters.
Communication Functions
Equipped with RS485 communication (2 ports) and infrared communication (1 port).
Auxiliary Power Supply Function
AC/DC adaptive auxiliary power supply, with auxiliary power prioritized after power-on.
Class C/D Three-Phase Smart Energy Meter (State Grid 2020 Standard)
DT（S）Z208系列
DT(S)Z208 Series
| Standard | Q/GDW 10827-2020, DL/T698.45 |
| Rated Voltage | 3x57.7V/100V; 3x100V; 3x220/380V |
| Current Specifications | Transformer-connected: 0.003-0.015(1.2)/0.3(1.2)A, 0.015-0.075(6)A/1.5(6)A |
| Accuracy Class | Active Energy: Class B, C, D; Reactive Energy: Class 2 |
| Frequency Range | 50Hz |
| Operating Voltage Range | 0.8%Un ~ 1.2%Un |
| Operating Temp. Range | -40°C ~ +70°C |
| MTTF | ≥16 years |
| Outline Dimensions | Length × Width × Height = 290mm × 170mm × 85mm |