... tester is a kind of all-purpose tester for testing volt-ampere characteristics, ratio, polarity, demagnetization, checks for primary current, ... 0-600A. Step-up, increasing current, drawing the volt-ampere characteristics curve, and calculating ratio are full automatic. It ... (50~60Hz)Output voltage for volt-ampere Input 220V Output 0~2000VOutput current for volt-ampere 0-15 AOutput current for ...