electronic ballast for high pressure sodium lamps

70W HPS Electronic BallastSpecifications:1.Power Factor > 0.992.Power Voltage AC 220V (165V-265V) Power Voltage AC 110V( 85V-145V)3.Total Harmonic Distortion(THD)<10%4.Low Power Waste: electronic ballast self-consumption< 10%5.Flicker-free, no sound resonance6.High Optical Effect7.Lumen Coefficient≥0.958.Tc<90℃ △t<40℃9.Constant Output Power Control10.Protection of short circuit, open circuit, ignition fail, thermal, over voltage 11. Easy to be installed12.All-round Energy Conservation 35%