... 150W,200W,250W,320W,400W,575W,600W,750W,1000W,1500W both voltage:110V/220V Dimming function UL and CE HID ... HPS Digital Electronic Ballast for 150W High Pressure Sodium Lamp Voltage ... Efficiency: 95 %( Max) THD: <10% Output power: 150W Current crest factor: <1.5 Output frequency: >30K Hz ... C Safety and regulation: IEC61347 EMC: EN55015 150W HID ballast for Street lighting