... Ballast, Magnetic Ballast for High Intensity Discharge lamp, Inductive Ballast, Metal Halide Ballast, High Pressure Sodium Ballast, High Pressure Mercury Ballast, Electromagnetic ... 250W, 400W, 1000W- Main voltage: 220V, 230V, 240V, main frequency: 50Hz, 60Hz.- Material: both copper wire and aluminum wire is ... leckage and low temperature raise. Magnetic Ballast for High Intensity Discharge Lamp