It is an integrated instrument used for measurement and analysis power transformers and special transformers on-load tap changer’s electrical performance of power system. It adopts computer-controlled, through a specially designed measuring circuit can be realized measurement of on-load tap changer’s transition time, transition waveform, the transition resistance, three-phase simultaneous performance and other parameters. According to the user’s needs and field conditions, it not only can directly lead measure from tap changer, but also can use the transformer three-phase bushing and the neutral point lead measure directly.In accordance with IEC standards IEC 61010-1. Safety requirements for electrical equipments  used in measurement, control and laboratory.

(1) Light oscillograph function
(2) Strong comprehensive measurement capability
(3) Comprehensive analysis of test results
(4) Data hold, data communication
(5) Strong anti-interference
(6) Large-screen LCD display, Chinese menu operation
(7) Own micro-printer, Chinese-characterizing print measurement result and waveform 
(8) Small size, light weight