Class B/C Three-Phase Prepayment Smart Meter (State Grid 20 Standard)
A smart meter integrating metering, demand, prepayment, alarm, display, freeze, and communication functions.
Product Description
The DSZY208 and DTZY208 series three-phase prepayment smart meters utilize advanced energy metering chips, built-in temperature-compensated hardware clocks, and ESAM security encryption chips. Manufactured with advanced microelectronics technology and SMT production processes, they integrate metering, prepayment, alarm, display, freeze, and communication functions to achieve user energy metering and consumption data storage. Features include high accuracy at low current, strong functionality, and excellent stability. They are primarily used for power data measurement and metering in power plants, large users, distribution transformers, substation transformers, and various enterprises and institutions, in locations where data transmission is via 485, GPRS, micro-power wireless, or CDMA. The communication protocol complies with the DL/T698.45 standard.
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, and agreed freeze functions.
Daily freeze, hourly freeze, scheduled freeze, instantaneous freeze, and agreed freeze functions.
Measurement and Monitoring Functions
Measures operating parameters such as voltage, current, active power, reactive power, and power factor.
Event Recording Functions
Records events such as voltage loss, undervoltage, phase loss, current loss, current interruption, overcurrent, overload, total voltage loss, reverse phase sequence, reverse power flow, demand overlimit, voltage/current unbalance, power factor below threshold, time calibration, programming, power failure, meter reset, cover opening, and breaker on/off.
Time Period and Tariff Functions
Supports up to 8 tariffs, with switching between current and standby tariff schedules.
Supports special tariff schedules for public holidays and weekends.
Supports special tariff schedules for public holidays and weekends.
Display Functions
Features a large-screen Chinese-character LCD with backlight. Display content can be toggled via buttons, and display items are flexibly configurable.
Fault Indication
Indicates faults via LCD symbols or characters.
Remote Prepayment Function
The meter receives remote commands such as breaker open, close, and power hold via communication, enabling effective demand-side management with secure authentication and encryption.
Local Prepayment Function (Optional)
The meter is equipped with an IC card slot, with preloaded tariffs and balances, supporting both CPU card and remote electricity purchase.
Communication Functions
Equipped with RS485 communication (1 port) and infrared communication (1 port).
Optional Configuration
Supports carrier communication, GPRS wireless communication, CDMA wireless communication, and micro-power wireless communication.
Class B/C Three-Phase Prepayment Smart Meter (State Grid 20 Standard)
DTZY208-M-Series
DTZY208-M Series
| Standard | Q/GDW 10827-2020, DL/T698.45 Reference 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; Direct-connected: 0.2-0.5(60)A/5(60)A, 0.4-1(100)A/10(100)A Accuracy Class | Active: Class B, C; Reactive: Class 2 Frequency Range | 50Hz Operating Voltage Range | 0.8%Un ~ 1.15%Un Operating Temp. Range | -40°C ~ +70°C MTTF | ≥16 years Outline Dimensions | L×W×H = 290mm×170mm×85mm |