DESIGN AND DEVELOPMENT OF 150 KV IMPULSE VOLTAGE DIVIDER

Abstract

The measurement Of high impulse voltages necessiates the use of a suitable voltage divider in order to determine the peak voltage and the waveshape of the impulse. Resistance,, capacitance or mixed (fl-►C in series ar in parallel) dividers are used for this purpose.. 'the present thesis is a report on the work carried out on the design and development of a 150 KV damped capacitive (series mixed type) voltage divider in order to be able to measure the output of 150 XV impulse voltage generator already developed in the ff.V. labO ratory of the department. In designing the divider, its parameters have been fixed by treating it as a transmission line since the high voltage arm is made up of many series elements of resistance and capacitance. The matching of the low voltage arm and the high voltage arm is also looked into to achieve divider response without oscillations and without reflections. The design ratio has been fixed at 1250, its capacitance being 35 pt and resistance being 115 oboe.