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Model 1051WR Winding Resistance Ohmmeter, 50A


One of the most important tests that can be made to determine the condition of a transformer, is to measure its winding resistance(s). Many defects or faults can be identified by this test including overheated or damaged windings, loose mechanical connections, poorly welded bonds, and issues associated with tap-changing mechanisms. The Model 1051WR has been designed to quickly perform winding resistance measurements with a very high degree of accuracy. Nine ranges of output current provide for a very broad resistance measurement capability.

Available on backorder

SKU: WR1051WR-0 Categories: ,


Details about the Amblyonix Model 1051WR Winding Resistance Ohmmeter, 50A

Specifications of this Winding Resistance Ohmmeter

Measurement Range: 0 to 20kΩ
Minimum Resolution: 0.01μΩ
Selectable output current: 20mA, 100mA, 200mA,
1A, 2A, 5A, 10A, 20A, 50A, and Automatic Output
Accuracy: 0.2% of reading, ±0.1μΩ
Communications: USB, Dual RS485
Internal Memory: Stores up to 99 data records
Input Power: 120VAC ±10% 60Hz ±1Hz
Operating Environment:
-4°F to 104°F @ ≤80%RH non-condensing


  • Six-inch color touch screen LCD
  • Broad resistance measurement
  • capability (0Ω to20kΩ)
  • Temperature compensated measurements
  • On-board micro-printer and USB interface
  • Dual RS485 communication interfaces
  • Automatic simultaneous six-winding measurements
  • Selectable manual and automatic test profiles
  • Single and three-phase measurement connections
  • Continuous and instantaneously rated output
  • Fixed and automatic current output from 20mA to 50A

Supplied with manual, test cables, power cord, two 10A fuses, printer paper, packing list and warranty card.

See the product features video on YouTube here.

Take a look at all our winding resistance ohmmeter options here.

Learn more about ohmmeters and their history on wikipedia here.


Additional information

Weight 32.6 lbs
Dimensions 16.5 × 12.6 × 7.9 in