the lighting circuits like Tube lights and CFL bulbs require 200 – 205 volts to produce the lighting lumens at the rated output. But we are giving 235 – 240 Voltages to the lighting circuit due to the phase setting voltages of 400 - 420V in the day time and 250 volts and above in the night tim e. So the excess voltage given to the lighting of 30 to 50 V increases the energy losses up to 25 % in our existing lighting systems and the tube lights bulbs ballasts failures are more now. The regulation of Output voltage will be controlled with two options of settable voltage settable time.Sense the Input voltage in individual three phases to corresponding neutral for balance and unbalance load.

the lighting circuits like Tube lights and CFL bulbs require 200 – 205 volts to produce the lighting lumens at the rated output. But we are giving 235 – 240 Voltages to the lighting circuit due to the phase setting voltages of 400 - 420V in the day time and 250 volts and above in the night tim e. So the excess voltage given to the lighting of 30 to 50 V increases the energy losses up to 25 % in our existing lighting systems and the tube lights bulbs ballasts failures are more now. The regulation of Output voltage will be controlled with two options of settable voltage settable time.Sense the Input voltage in individual three phases to corresponding neutral for balance and unbalance load.