Holley Metering Limited is a cross-regional and export-oriented company focusing on the R&D, production, and marketing of energy meter,electricity meter. With 36 years experience in the metering field, Holley is now the biggest energy meter manufacturer in China. The domestic market share has been in No. 1 position over the last 13 years. Holley follows the strategy of internationalization actively and exports to more than 40 countries in the world. There are both IEC and ANSI conformed products, most of which are certified by internationally recognized laboratories(KEMA).

DDS28 single-phase energy meter (electricity 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 energy meter is KEMA certified and the design can be tailored to different customer requirements.

The meter is provided with pulse output, which makes remote control and locale consumption monitor possible. The DDS28 is a safe and optimized solution designed for the needs of deregulated energy market and automatic meter reading.

1. Technical data
Applicable Standard: IEC 61036-2000
Service Lifetime: 10 years
Accuracy Class: Class1, Class2
Working Voltage Range: 0.7~1.2Un
Power consumption  Less than: 0.7W or 6VA
Over voltage protection: 12kV

2. Basic functions
Energy display by register or LCD
Bi-directional active energy measurement
Operation indicated by pulse LED
S0 output with optical isolated output transistor corresponding to DIN 43864

3. Optional functions
Reverse indicator: An LED indicator will be on when the current is reversed
Anti-tamper in condition that load is connected between the line and the earth
Entirely closed register
HF magnet immune register
Reversal preventing register
Transformer connection

4. Specification
Rated Voltage: 110 V, 120V, 220V, 230V, 240V
Reference frequency: 50Hz or 60Hz
Basic Current (Maximum Current)  
2.5(10)  5(20)  10(40)  20(80)
2.5(15)  5(30)  10(60)  20(100)