Generation of switching impulses using high voltage testing transformers

High voltage switching impulses may be generated from cascaded testing transformers by suddenly energizing the transformers for a short period of time. A detailed analysis of this high voltage impulse generation technique was made and its practical feasibility was tested on three transformer units in cascade. A series of generalized curves correlating the basic characteristics of the output impulse with the circuit components was derived for a rapid selection of the optimum operating conditions of any given test circuit.