Overview The Intelligent dielectric loss tester also applies to the measurement of tg and electrical capacity of high voltage electrical equipments in the workshops, laboratories and research institutes. It could measure non-grounded or grounded high voltage equipments adopting positive and negative connection method. Besides, it could measure the tg´ of capacitor voltage transformer and capacitance of main capacitor C1and C2. Main Specifications Control panel printer, keyboard, indicator and communication transferring. Variable frequency power supply SPWM switching circuit is adopted to generate and output high-power sine wave stable voltage. Step-up transformer the output of variable frequency power supply is stepped up to the measuring voltage. The maximum reactive power output is 2KVA one minute. Standard capacitor internal Cn. It is the measuring basis. Cn current detection it is used to detect the internal standard capacitor current, 10A 1A. The input resistance is