Transformer Field Testing

Waukesha® Service can provide almost any kind of field substation transformer testing, utilizing a wide range of knowledge and experience. These tests can be done to commission new or relocated units, as a part of routine maintenance or condition assessments, for diagnostics purposes or establishing benchmarks.

Tests available include the following:

  • Doble® Power Factor Test of Windings
  • Doble® Power Factor Test of Bushings
  • Doble® Surge Arrester Test
  • Core Resistance (Megger)
  • Transformer Turns Ratio
  • Winding Insulation Resistance
  • Winding Excitation
  • Winding Resistance
  • Current Transformer Ratio, Polarity and Saturation
  • Operational Check of Controls
  • Calibration of Gauges
  • Thermal Scans
  • Doble® Sweep Frequency Response Analysis
  • Phase Relation
  • Materials and Oil Testing
    • Oil General Chemistry
    • Dissolved Gas Analysis
    • Furfural Analysis
    • Particle Count
    • Metals-in Oil
    • Degree of Polyermization

Technician performing substation transformer testing

Additional Services Available

SPX Transformer Solutions possesses the equipment, experience and capabilities to complete other service work you may elect to perform based on your test results such as insulation dryouts, bushing replacements, LTC repairs/upgrades, FR3 retrofill, etc.; combining services can minimize costs and transformer downtime.

For more information or assistance during normal business hours, call or e-mail your local SPX Waukesha Sales & Service Representative, or You can also complete and submit our Service Project Inquiry form.





Emergency Service Available 24/7/365:

(that's 888-365-2497)

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