Product

Transformer Ohmmeter KVZR-20S

Transformer DC Winding Resistance Tester , also termed transformer ohmmeter, is the newest product for DC resistance measurements of transformers. It’s particularly designed for the DC resistance of three-phase windings in high-capacity transformers, allowing for simultaneous testing of all three phases.

Product Description

KVZR-20S Three Phase Transforerm DC Winding Resistance Tester

Overviews

Transformer DC Winding Resistance Tester , also termed transformer ohmmeter, is the newest product for DC resistance measurements of transformers. It’s particularly designed for the DC resistance of three-phase windings in high-capacity transformers, allowing for simultaneous testing of all three phases. With this device, there is no need to discharge the tap changer for on-load voltage regulating transformers, and the measurement process is three times faster than the traditional single-phase approach, thus greatly reducing work time and effort. The tester features a large-screen LCD with an intuitive graphical interface, simplifying operation. It includes a panel printer and extensive non-volatile memory for straightforward storage and printing of results. The device ensures stable, rapid, and consistent test data, making it an excellent choice for on-site transformer DC resistance testing.

 

Technical Data

Current Single phase:1A  5A  10A  20A  40A

Three phase:1A  5A  10A  20A

Range Single phase:

1A  10mΩ-20Ω

5A   1mΩ-4Ω

10A   1mΩ-2Ω

20A   1mΩ-1Ω

40A   1mΩ-0.5Ω

Three phase:

1A  10mΩ-6Ω (per phase)

5A 1mΩ-1Ω(per phase)

10A 1mΩ-0.6Ω(per phase)

20A 1mΩ-0.3Ω(per phase)

accuracy ±0.2%(full range)
Max.resolution 0.1μΩ
Data saving capacity 150 group
Power AC 220V±22V,50Hz±2 Hz
Working environment Environment temperature:0-40℃   Relative humidity: ≤80%
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