DDS28 single-phase static watt-hour meter is designed for measuring active energy in single-phase alternating current power grids by connecting up resident power supply system. It complies with the standard IEC 61036 and has high measurement accuracy. The meter is KEMA certified and the design can be tailored to different customers' requirements.
The meter has high reliability and long service life by adopting large-scale
integration (LSI) and surface mounting technology (SMT) as well as
international brand and long-life key components. Meanwhile, the meter is
provided with pulse output, which makes remote control and locale
consumption monitor possible. It is a safe and optimized solution designed for the needs of deregulated energy market and automatic meter reading.

Basic functions:
1) Energy display by register or LCD
2) Bi-directional active energy measurement
3) Operation indicated by pulse LED
4) Output with optical isolated output transistor corresponding to DIN 43864
Optional functions:
1) Reverse indicator: an LED indicator will be on when the current is reversed
2) Anti-tamper in condition that load is connected between the line and the earth
3) Entirely closed register
4) HF magnet immune register
5) Reversal preventing register
6) Transformer connection

Specifications:
1) Applicable standard: IEC 61036-2000
2) Service lifetime: ¡Ý10 years
3) Accuracy class: Class1, Class2
4) Working temperature: -30 ~ +65º C
5) Working voltage range: 0.7Un to 1.2Un
6) Power consumption: ¡Ü0.7W or 6VA
7) Over voltage protection: 12kV
8) Rated voltage: 110V, 120V, 220V, 230V, 240V
9) Reference frequency: 50Hz or 60Hz
10) Basic current maximum current (A): 2.5 (10), 5 (20), 10 (40), 20 (80), 2.5 (15), 5 (30), 10 (60), 20 (100)

Note: other voltages between 100V and 500V are also available and other currents up to 100A are also available.