Guide for Calibration of Test Equipment and Circuits for Measurement of Corona Pulses

Corona pulses originating in an insulation system under an applied test voltage may be observed on a cathode-ray oscilloscope coupled into the test circuit. The relation between a corona pulse at the system terminals and the height of the resulting oscilloscope deflection is influenced by the arrangement of the test circuit and is generally determined by a calibration procedure. The guide presents calibration procedures for four circuit arrangements. It also suggests a standard circuit for comparing the sensitivities of various corona-pulse measuring equipment.