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This work concerns the comparison between the behaviour of winding wires insulated by a conventional organic enamel or by a nanocomposite enamel, when subjected to the action of surface partial discharges. Some aging tests were carried out applying a 1500 Hz sinusoidal voltage with different amplitudes. The outcome was summarized through lifetime plots. During the tests, partial discharges (PD) patterns...
Partial discharge (PD) measurements can be a very powerful tool for the condition assessment of electrical insulation systems. When applied to rotating machines or winding insulation mock-ups, if pulsed power supplies are considered (PWM), PD measurement can provide not only an "on/off output about the presence or not of PD pulses but could also provide information about the degradation processes...
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