On-load tap-changer is a moving part connected with transformer circuit, so the detection of on-load tap-changer has attracted more and more attention. In the "Electric power equipment handover and preventive test procedures", it is required to check the action sequence of on-load tap-changer and measure the switching time. To this end, our company has successfully developed the ZXYZ-2002 transformer on-load switch tester, which is mainly used to measure the transition waveform, transition time, instantaneous transition resistance value, three-phase synchronization and so on. High degree of intelligence, all Chinese menu prompts, easy to operate. The instrument is small, light weight, strong anti-interference ability, greatly reducing the labor intensity of the field staff, is the power supply unit, transformer manufacturing industry to ensure safe production, improve product quality of the ideal instrument.

Features

1. The output current is large and the weight is light.
2. The instrument output open circuit voltage 28V, in the current of 1A can test 10 ω transition resistance, and has 0.5A, 0.3a, convenient test of large transition resistance.
3. With perfect protection circuit, high reliability.
4. Vertical chassis structure, 5.7 inch large LCD display, easy to operate on site, with printing function.
5. With U disk storage function, can store more data waveform.

Technical Indicators

Output current	1.0A, 0.5A, 0.3A, three grades are optional
Resistance range	1.0A range:0.1 ~ 10 Ω 0.5A grade:5 ~ 20 Ω 0.3A grade:10 ~ 40 Ω
Resistance measurement accuracy	±(reading ×5%+5 words), resolution: 0.01 Ω
Measurement range of transition time	1 ~ 250mS
Transition time measurement accuracy	±1mS, resolution: 0.1ms
Sampling frequency	10K
Storage mode	U disk storage, local storage
Operating temperature	-20ºC ~ +50ºC
Ambient humidity	≤90%RH, no condensation
Power supply	AC220V±10%, 50Hz±10%