Power transformer testing On-Load Tap-Changer Characteristics AC Parameter Tester

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Supplier ID
Supply Capability:
1000 units per month
Lead time:
15 days
Trade Terms:
FOB china port
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Ref Price
USD 1000.00 /Unit
1 (Min. Order Quantity)
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On-load Tap-changer Tester


  The 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.

On-load Tap-changer Tester


1. Large output current, light weight;

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

3. With winding or without winding measurement;

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

5. With perfect protection circuit, reliability and strong;

6. 7-inch large LCD display, easy on-site operation;

7. Built-in high-capacity lithium battery(optional)

8. 500 sets of data can be saved in Internal automatically, can connect with U Disk.

Output current


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


Measurement accuracy Transition resistance

± (5% reading ± 0.1Ω)

Transition time

 ± (0.1% reading ± 0.2ms)


340mm × 245mm × 210mm

Instrument weight


Ambient temperature

Ambient humidity

-10 ℃ ~ 50 ℃

≤ 85% RH

Power frequency

Work Power

50 ± 1Hz




Wooden box

After Sales Warranty

12 months

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