insulating oil tester with variable test voltage from 0 to 60, 75, 80, 90 or 100 kV Test as per ... self-contained,compact and portable giving smoothvariable test voltage from 0 to 60, 75, 80, 90 or 100 kV for testing ... , IS6792, ASTM D 877, ASTM D 1816, UNE 21.2) Withstand Test A3) Withstand Test B4) 5 Minute Test5) ... insulating oil tester with variable test voltage from 0 to 60, 75, 80, 90 or 100 kV