Thanks for your response, I've learned something useful. I've seen that most often the discharge are mostly on the rising of absolute value of Voltage, and quite rare in decreasing fase. That's mean something?
DOge
I have made more than 200 tests at partial discharges with an MPS equipment, and I have some doubt on how interpret the output result (Vi, Ve, pC). I use it for evalue the insulation on dielectric heatsink, but we don't know which is the acceptable level of pC at 3kV (the operating voltage) to...