1.Description

The Huazheng Electric on-load tap-changer is the only moving part connected to the transformer circuit. Therefore, the detection of the on-load tap-changer is becoming more and more important. In the "power equipment transfer and preventive test procedures", asked to check the on-load tap-changer action sequence, measurement switching time. The instrument is mainly used to measure the transformer on-load tap-changer transition waveform, transition time, the instantaneous transition resistance, three-phase synchronization and so on.

The instrument is highly intelligent, all Chinese menu prompts, simple operation. Instrument small size, light weight, anti-interference ability, greatly reducing the labor intensity of the site staff, is the power supply units, transformer manufacturing industry to ensure safe production, improve product quality ideal instrument.

2.Features

l Large output current, light weight;

l Test YO, Y, type transformer, the resistance unnecessary to be converted but directly display;

l With winding or without winding measurement;

l Waveform display automatically adjusts the resistance according to the sampled value, the time value amplitude

l With perfect protection circuit, reliability and strong;

l 7-inch large LCD display, easy on-site operation;

l Built-in high-capacity lithium battery(optional)

l 500 sets of data can be saved in Internal automatically, can connect with U Disk.

3.Technical Parameters

Output current: 2.0A,1.0A,0.5A,0.2A

Measuring range Transition resistance: 0.5Ω~5Ω(2.0A)    2Ω~20Ω(1.0A)   

5Ω~40Ω(0.5A)     20Ω~100Ω(0.2A)

Transition time: 0 ~ 320ms
       Open circuit voltage: 24V
       Measurement accuracy Transition resistance: ± (5% reading ± 0.1Ω)
                                             Transition time: ± (0.1% reading ± 0.2ms)
      Sampling rate of 20kHz
      Storage mode U disk storage
      Dimensions: 340mm × 245mm × 210mm
      Instrument weight: 7kg

4.Application Conditions

Ambient temperature   -10 ℃ ~ 50 ℃
Ambient humidity      ≤ 85% RH

Power supply: AC220V±10%

       Power frequency  50 ± 1Hz