Transformer Winding Ohmmeter VATWO-140S
Transformer Winding Ohmmeter

Transformer Winding Ohmmeter is designed to measure the dc resistance of all types of magnetic windings accurately. It can test transformers and rotating machine windings and perform low-current resistance measurement on connections, contacts and control circuits.

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1)Adopt 4-wire method for resistance measurement

2)DC test current up to 40 A maximum

3)User-selectable maximum current range

4)Resistance measurement from 50μΩ to 20kΩ

5)Fast auto safety discharge circuit

6)Able to download test results via USB interface

7)Able to print the test results directly via built-in printer


DC output range: 40A, 20A, 10A, 5A, 2.5A, <20mA

Resistance measurement

50μΩ-500mΩ @ 40A

100μΩ-1Ω @ 20A

500μΩ-2Ω @ 10A

1mΩ-4Ω @ 5A

2mΩ-8Ω @ 2.5A

10Ω-20kΩ @ <20mA

Measuring accuracy: ±0.2% reading ± 2μΩ

Resolution: 0.1μΩ

320×240 colour LCD screen for display

USB port for downloading results

Built-in printer for printing test results directly 

Max. memory capacity: 1000 test results

Power supply: customized(AC220V/120V±10%, 50Hz/60Hz optional) 

Dimension: 400x225x350mm(15.75x8.86x13.78 in)

Weight: 13kg(28.67 lb)

Environmental Conditions

storage temperature: -20~60

humidity: <90%

operating temperature: -10~50

Safety Qualifications and EMC

Safety: designed in accordance with IEC61010-1

EMC: light industrial IEC 61326

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