Transformer Winding Resistance Measurement with Raytech Winding Resistance Meters

Posted by Protec Tech Team on

Raytech WR50-12 Two Channel Winding Resistance Test SetTransformer winding resistance can help you determine the condition of transformers. When a transformer develops defects like coil to core or coil to coil shorts, opens and corroded connectors, the resistance of the windings change. It is a good idea to regularly test transformer components because a defect can cause severe power losses, electrical instability and eventual failure.

Contact Us Now During operation, transformers are subject to mechanical, electrical and thermal stress. Measuring the winding resistance is a non-invasive way of ensuring the integrity of the winding and their connections to the outside world. 

Measuring winding resistance is performed on each phase of the transformer (both primary and secondary) and then compared to previous test results, and to one another to determine if they are within the tolerances of industry standards. To help in assessing transformer condition, you might want to check out the Raytech Winding Resistance meters. These devices are designed to accurately measure winding resistance of various transformers regardless of configuration. Below is a comparison of the testers to help you select the best model suitable for your testing applications.

Raytech WR50-13 Three Channel Winding Resistance Test Set

Product Features   

  • 3 channels for temperature
  • Features core demagnetization and fast discharge safety during diagnostics
  • Easy to use touch screen control panel
  • An inductive load of up to 1500 H can be charged by the device
  • Integrated thermal printer
  • Audio-visual indicators to alert user about discharge status
  • Measures winding resistance from 0.1 μΩ up to 100 Ω
  • Adjustable current output ranging from 5 Amperes up to 50 Amperes at 50 Volts
  • Emergency safety stop button
  • Has provisions that allow it to be used together with the Raytech Micro Junior 10A Precision Micro Ohm Meter or the Raytech Micro Junior 2 10A Precision Micro Ohm Meter
  • Weighs approximately 16.8 kilograms
  • Includes the following items
  • Micro-Jr connection
  • Current, potential and safety ground leads 10 meters long

 

Raytech WR50-2 Two Channel Winding Resistance Test Set


This model is an improved version of the WR50 model. It has a wider output current and resistance measurement ranges, allowing you to test various types of transformers. Another great feature is its internal storage which lets you save test results for later retrieval.

Product Features

  • 3 channels for temperature
  • Dual channel winding resistance tester
  • Features core demagnetization and fast discharge safety during diagnostics
  • Easy to use touch screen control panel
  • An inductive load of up to 1500 H can be charged by the device
  • Integrated thermal printer
  • Audio-visual indicators to alert user about discharge status
  • Measures winding resistance from 0.00 μΩ up to 100 kΩ
  • Adjustable current output ranging from 1 milliampere up to 50 Amperes at 50 Volts
  • Emergency safety stop button
  • Has provisions that allow it to be used together with the Micro-Jr or the Micro-Jr 2
  • Weighs approximately 18.8 kilograms
  • PC connectivity through USB or RS232 for data transfer
  • Includes the following items
  • Current, potential and safety ground leads 10 meters long
  • USB and RS232 cables

Raytech WR50-12 Two Channel Winding Resistance Test Set

The WR50-12 is similar with the WR50-2 but has an extended memory storage. It has a provision for a USB thumbdrive for additional memory storage. It is also lighter and more compact,making it easy to carry around.

Product Features

  • 3 channels for temperature
  • Dual channel winding resistance tester
  • Features core demagnetization and fast discharge safety during diagnostics
  • Easy to use touch screen control panel
  • An inductive load of up to 1500 H can be charged by the device
  • Integrated thermal printer
  • Audio-visual indicators to alert user about discharge status
  • Measures winding resistance from 0.00 μΩ up to 100 kΩ
  • Adjustable current output ranging from 1 milliampere up to 50 Amperes at 50 Volts
  • Emergency safety stop button
  • Weighs approximately 18.3 kilograms
  • Includes the following items
  • Current, potential and safety ground leads 10 meters long
  • 1 Gigabyte USB flash drive

This electrical test equipment is available for rent, lease, or purchase from Protec Equipment Resources. We are here to help you with your testing equipment needs.

Wherever the job takes you (and the equipment), with Protec's multiple locations, we always ship from the office closest to your desired drop location (if the electrical test equipment you need is in-stock at that location), and the equipment can be returned to the nearest office.

We always consider ALL shipping options in order to save you the most time and money.

Also, if you happen to be close to one of our many office locations, walk-ins are always welcome!

Rely on the Electrical Test Equipment Rental Experts, we are there when and where you need us.

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Editor’s Note: This post was originally published August, 2012 and has been updated freshness, accuracy and comprehensiveness.

Topics: Raytech, Winding Resistance

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