DDS879 single-phase electricity meterDetailed product description：

The DDS879 single-phase electronic energy meter adopts a dedicated integrated circuit, with few peripheral components, simple structure, high reliability, low power consumption, and long service life. It can be used to measure single-phase AC active energy with a rated frequency of 50Hz.

DDS879 single-phase electricity meter functions and features:
Active energy metering does not require calibration for long-term operation.
Equipped with LCD or metronomer (optional for Type II meters) display function.
Equipped with infrared or RS485 communication meter reading function, capable of centralized reading and networking.
It has a power outage display function and can be set to display for up to 6 days.
The RS485 interface is electrically isolated from the meter and has a lightning protection circuit to withstand AC220V voltage attacks.
Equipped with dual protection of hardware switches and software passwords to ensure data security.
The freezing and storage date of electric energy data can be set arbitrarily (at midnight on a specified day).
Adopting specialized integrated circuits for electrical energy, with a wide dynamic operating range.
The communication protocol DL/T645-1997 meets the technical requirements of single-phase electronic meters (non time division) in Zhejiang Province.

DDS879 single-phase electricity meter specifications and main technical parameters:
Rated voltage: 220V
Basic current: 1.5 (6) A, 2.5 (10) A, 5 (20) A, 10 (40) A, 10 (60) A
Rated frequency: 50Hz
Accuracy level: Level 1
Starting current: Direct input 0.4% Ib (level 1)
Mutual inductance 0.2% In (Level 1)
Stealth: with anti creep logic design
Power consumption: ≤ 2W/10VA (overall power consumption)
Environmental conditions: Standard operating temperature is -20 ℃ to 55 ℃
The maximum working temperature is -30 ℃ to 60 ℃
Relative humidity ≤ 85%
Weight: Approximately 0.60kg
Dimensions: 151 × 129 × 62 (mm)