CTP series current transformer analyzer adopts the technology of combination of low frequency conversion method and voltage method, which can accurately measure several important items including transformation ratio, polarity, volt-ampere characteristics, etc. CTP series is divided into 100P, 120P, 220P and other different models. CTP series integrated transformer tester is perfectly capable of testing high-precision CT for power system metering and steady-state and transient CT for protection. It can easily test transformers with a transformation ratio up to 30000/1, with an accuracy up to 0.05%.