User manual for the DT(S)ZY1122 three‑phase intelligent electricity meter, covering features, functions and technical specifications.
The DT(S)ZY1122 three‑phase intelligent electricity meter is built with large‑scale integrated circuits, digital sampling technology and SMT process. It consists of measurement, data processing, communication and ESAM modules, providing energy measurement, data storage, real‑time monitoring, automatic control, information exchange and load control functions.
The manual describes the meter's functions such as temperature‑compensated hardware clock, multiple tariff periods, demand recording, various freezing modes, and remote or local fee‑control capabilities. Technical parameters include electrical ratings, accuracy classes, communication interfaces, dimensions and environmental limits. This manual is written in Chinese.
| Normal operating voltage | 0.8Un–1.1Un |
|---|---|
| Limit operating voltage | 0.70Un–1.15Un |
| Clock battery voltage | 3.6 V DC |
| Backup battery voltage | 6.0 V DC |
| RS485 communication baud rate | 1200–9600 bps (default 2400 bps) |
| Dimensions (W×H×D) | 290 mm × 170 mm × 85 mm |
It supports RS485, power‑line carrier and infrared interfaces with baud rates of 1200–9600 bps (default 2400 bps for RS485).
The meter can be set for up to 14 tariff periods.
Active power measurement accuracy is class 0.5S and class 1.
It uses a fixed‑interface LCD display.