Celebrating Over 70 Years in Business

Electrical Testing, Maintenance, and Repair Services

About Us

With over 70 years of experience, Transformer Service, Inc. offers complete testing, maintenance, and repair services to electrical substation and distribution equipment including transformers, regulators, reclosers, switchgear, circuit breakers, and relays to customers throughout the U.S.

  • Transformer oil testing and analysis in our fully equipped lab for samples drawn by customers or by TSI technicians
  • Transformer fluid sampling and visual inspection
  • Transformer leak repairs and re-gasketing
  • Transformer oil re-refining, degassing, and dehydrating
  • Assembly and vacuum oil filling of new transformers
  • Electrical testing and repairs
  • Transformer and circuit breaker reconditioning
  • LTC and tap changer service
  • PCB transportation and disposal
  • Painting at the customer’s site
  • Infrared testing
  • Silicone, Rtemp, and FR3 fluid filtering, degassing, and dehydrating
  • Service System 50, Reclass 50, and Transclene retro-filled transformers
  • Asset recovery of transformers, cable, etc.
  • Recycling of transformer oil with the potential for carbon credits

Technical Bulletins

Coming Soon