Star DDS26 series of Electronic Single-phase Watt-hour Meter has the features of long life, high accuracy, high reliability, high allowable overload, little power consumption, small size & lightweight etc.. Function: Star DDS26-V series of Electronic Single-phase Watt-hour Meter is new & high-tech products adopting special large-scale IC, latest micro-electronic technology & SMT technique design. It takes more allowable ambient errors for circuit design & components selection as foundation. It can ensure the long-term operation stability of the energy meter. Applicable condition: Ambient temperature: -25 ℃ ~ 65 ℃, maximum relative humidity: 100%; Operating voltage range: 220/230/240V (-30% - +20%), frequency range: 50/60Hz ± 5% Electrical Features Accuracy Class Class 1.0 / 2.0 Rated Voltage 220V Rated Frequency 50/60Hz Start Current 0.002Ib Voltage Circuit Power Consumption <=0.8W,6VA Current Circuit Power Consumption <=0.2VA Display Register Nominal Current 1.5(6)A,2.5(10)A,2.5(15)A 5(20)A,5(30)A,5(40)A 10(40)A,10(50)A,10(60)A Meter's Constant(imp/kWh) 12800/6400/3200/1600 Physical Features Weight 0.8Kg Outside Size 192mm*112mm*60.5mm Ambient Temperature -25'C~65'C Max Relative Humidity 100%