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Energy of Inrush Current: E=1/2CVpeak2 =1/2(5000*10-6) (171.1)2 , E= 73.18 Joules needs to be safely absorbed by NTC Thermistor. The minimum resistance required by NTC thermistor: MinR= Vpeak / Ilimit = 171.1 V / 30 A=5.70 Ohms is required from NTC thermistor at 25ºC. The steady state current is 10 A.
PTM Published on: 2013-10-17