Abstract
Basic studies in connection with the nature and method of detection of slot discharge phenomena in high-voltage stator windings are presented. Discharging is seen to result from a loss of electrical contact between conducting coil surfaces in the slot portions and the core. This gives rise to a relatively high energy capacitive discharge which may seriously degrade basic insulation if it continues unchecked. The several possible methods for detection and location of discharge in stator windings were studied. The development of the slot discharge analyzer is described. This is useful as a maintenance tool for the detection and location of slot surface discharging on high-voltage machine stator windings.
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