Winding resistance tester for power transformers


The WRT-10D™ is a high-performance winding resistance tester designed for power transformers and large motor applications. Its interface includes a large color display, full keypad, thermal printer and USB port for easy data transfer and reporting



  • Rugged, highly regulated and filtered output current source for fast stabilized measurements
  • High accuracy reading 0.1%
  • High resolution 4 ½ display, 0.1μΩ
  • Large color LCD display
  • Full QWERTY keypad for easy data entry
  • Built-in thermal Printer
  • Large internal memory
  • Reporting software automatically generates a finished report from PC
  • Tap changer control and analysis 



Injection Cable

Injection & reading replacement cable with booster type clamps.

Part number: WRT-101

Length: 15 meters (50 ft)

Measurement Cable

Reading replacement cable with booster type clamps.

Part number: WRT-102P

Length: 15 meters (50 ft)

Tap Changer Control Cable

Control the tap changer while performing winding resistance testing.

Part number: WRT-103

Length: 5.5 meters (18 ft)

Contact us

Contact us by email

Business days

Monday to Friday, 8:00 to 17:00 

Eastern Time Canada

ndb Technologies

111-1405 ave. St-Jean-Baptiste

Quebec city, Qc

G2E 5K2, Canada

Contact us

1 (418) 877 7787