HGY Transformer Characteristics Comprehensive Tester is specifically designed for relay protection professionals to test the volt-ampere characteristics of current transformers, ratio testing, and polarity discrimination. It can also be used for transformer polarity discrimination tests. It is a multifunctional test instrument with a relatively high performance-to-price ratio. The HGY Transformer Characteristics Comprehensive Tester adopts high-efficiency, low-consumption quality materials and a specially wound booster. A microprocessor is used for data acquisition, analysis, and storage. A built-in micro printer can print test data and curves. When testing CT ratio, it can automatically calculate the ratio value. One person can complete all testing work. This machine has the advantages of light weight, portability, and easy operation. Its unique performance makes it a rare instrument at present.