Transformer load tap tester according to the Electric Power Industry Standard of the People's Republic of China high voltage test equipment, general technical conditions DL/T846 ,8-2004 design, to meet the "handover of power equipment and preventive tests Statutes, requires checking The on-load tap-action sequence, measuring the switching time requirements. Can achieve the accurate measurement of the parameters of the on-load tap the transition time, transition waveform, transition resistance, such as three-phase over the same period, the test load tap-ideal equipment. Main features: ① test Y0 Y △-type transformers, resistance displayed directly without translation; ② data analysis humane, can automatically find the the waveform middle of failure, and marking; ③. Waveform display is back according to the sampling data automatically adjust the amplitude of the resistance and time; ④ with winding or without winding tested; ⑤. the four terminal wiring to provide high-precision resistance measurement, and without wire compensation; ⑥. continuous testing during the test, saving the the transformer blackout of time; ⑦. instrument can survive word report, to facilitate data management and query; otherwise. instrument is controlled by a small computer, external color LCD touch screen with 800 × 480 high-speed thermal printer support plug-in keyboard and mouse operation convenient; ⑨ inside the instrument can automatically save the 800 sets of data, can also be an external U disk save. Technical parameters: ① phase constant current source charging, charging current: 1A file; 0.2A file ② Port Maximum voltage: 24V ③ The maximum range of the transition resistance: 100Ω ④. The transition resistance measurement range: 1A file: 0.8Ω ~ 20Ω 0.2A file: 10Ω ~~ 100Ω ⑤ waveform record length of time: 300ms ⑥ Sampling rate: 20k ⑦ time resolution: 0.1ms ⑧ resistance Resolution: 0.1Ω ⑨ accuracy: the transition resistance: ± 5% of reading ± the 0.1Ω transition time: ± 1% of reading ± 0.2mS ⑩ Operating Temperature: -10 ~ 40 ℃ use relative humidity: <85% RH