The on load tap changer is a moving component connected to the transformer circuit, so the detection of on load tap changers is becoming increasingly important. In the "Regulations for Handover and Preventive Testing of Power Equipment", it is required to check the sequence of action of on load tap changers, measure switching time, etc. This instrument is mainly used to measure the transition waveform, transition time, instantaneous transition resistance values, three-phase synchronicity, etc. of on load tap changers in transformers.

▶ The instrument has a high output current and is lightweight;

▶ Two levels of current output, wider testing range and higher stability;

▶ Can automatically calculate the transition resistance value and transition time value;

▶ Equipped with complete protection circuits and strong reliability;

▶ An 8-inch large LCD display for easy on-site operation;

▶ Equipped with USB storage function, it can store more data.

▶ The keyboard operates independently, making the instrument more efficient and convenient to operate.

▶ Output current 1.0A, 0.5A

▶ Measurement range transition resistance: 0.5 Ω～ 20 Ω (1.0A), 0.5 Ω～ 40 Ω (0.5A)

▶ Transition time: 0-250ms

▶ Measurement accuracy transition resistance: ± (5% reading+3 words)

▶ Transition time: ± (0.1% reading+3 words)

▶ Storage methods: USB storage, local storage

▶ Environmental temperature -10 ℃~50 ℃

▶ Environmental humidity ≤ 85% RH

▶ Working power supply AC220V ± 10%

▶ Power frequency 50 ± 1Hz