DV Power test instruments perform various diagnostic tests on power and instrument transformers. Condition assessment on On Load Tap Changers is the unique specialty feature.

Test instruments are portable and enclosed in durable metal cases. The 19” rack mounted version suitable for factories is available as well.

Applications supported by DV Power transformer test equipment include:

• Winding resistance measurement (IEC 60076-1)
• Analysis of On Load Tap Changers (IEC 60214-1)
• Heat run test (IEC 60076-2)
• Automatic transformer demagnetization
• Turns ratio measurement of power and instrument transformers (IEC 60076-1)
• Excitation current measurement
• Phase angle measurement
• Transformer vector group detection
• Demagnetization status verification

All of the above mentioned measurements are performed with the highest accuracy. The advanced DV-Win PC software enables collecting both numerical and graphical results. These features provide easier and more efficient analysis. After the test a test report is generated with a single click. The report can be easily customized and saved in different formats, such as XLS and PDF.

The analysis of On Load Tap Changers is performed by the new method called dynamic resistance measurement (DRM). This is a non-intrusive method and allows detecting problems in On Load Tap Changers without disassembling them.

TRT63 Series Turns Ratio Tester TRT63C

TRT63 Series Turns Ratio Tester TRT63B

TRT63 Series Turns Ratio Tester TRT63A

TRT4x Series Turns Ratio Tester TRT43A

TRT4x Series Turns Ratio Tester TRT40A

TRT33 Series Turns Ratio Tester TRT33C

TRT33 Series Turns Ratio Tester TRT33B

TRT33 Series Turns Ratio Tester TRT33A

TRT03 Series Turns Ratio Tester TRT03C

TRT03 Series Turns Ratio Tester TRT03B

TRT03 Series Turns Ratio Tester TRT03A

RMO-TT Series RMO100TT

RMO-TT Series RMO60TT

RMO-TT Series RMO40TT

RMO-TD Series RMO60TD

RMO-TD Series RMO40TD

RMO-TD Series RMO25TD

RMO-TW Series RMO50TW

RMO-TW Series RMO30TW

RMO-TW Series RMO20TW

RMO-TW Series RMO10TW

TWA-TRT Safety Switchbox

Three-Phase Winding Ohmmeter TWA25A

Tap Changer & Winding Analyzers TWA40D