Transformer Repair & Field Service

Need your transformer inspected, tested, or repaired? Fill out the form below to request a quote.

Get a Repair Quote
Maddox employee repairing a padmount transformer
Need repairs?ServicesIn-shop repairField Service

Services

Our team of expert technicians is outfitted with state-of-the-art testing and fabrication equipment to keep your transformer in top working condition.

Maddox transformer technician performing tests on padmount transformer

We offer a full range of inspections, tests, and maintenance services:

  • Complete coil repair and replacement
  • Complete oil sampling and analysis
  • Regasketing of all sealed surfaces on transformer
  • Replacing of all components associated with standard electrical transformers (dry-type and oil-filled)
  • Weld repair on the majority of metal tank deformities
  • Repainting
  • Oil processing
  • And much more

In-shop Repair

Maddox repair centers can handle all your industrial transformer repairs - everything from padmounts, and medium voltage dry-types, to substations weighing 40 tons.

Two Maddox transformer technicians welding on a padmount transformer

Repair shop resources

  • Full ANSI C.57 electrical test lab
  • 10x10 core & coil drying oven
  • Vacuum processing oil dehydrators, 1600 GPH
  • 40 ton bridge crane capacity
  • Full fabrication shop
  • 14x14 paint booth w/ crane access
  • 31,000 Lb. forklifts
  • 7.5 acres of outdoor storage, 36,000 indoor storage
  • Fully stocked components warehouses
  • 30,000 gallons of transformer fluid in stock

Field Service

The Maddox field service team is ready to travel out to your project and perform minor repairs and replacements on your transformer as well as any fluid top offs or transformer testing.

A maddox padmount transformer that has had field service repairs done to it

Field service repairs

  • Bushing replacement
  • Bushing gasket replacement
  • Tap changer replacement
  • Tap changer gasket replacement
  • Load break switch replacement
  • Load break switch gasket replacement
  • Bayonet fuse holder replacement
  • Bayonet fuse holder gasket replacement
  • Fluid replacement
  • Fluid top off
  • Dissolved gas analysis (DGA) sampling
  • In-field testing & repair evaluation

The Maddox Advantage

Experience

From the start, Maddox was built with an exclusive focus on transformers and transformer-related equipment. We do one thing, and we do it well.

Customer Service

Every job is different. We start by understanding your specific needs, expectations, and specifications and build custom solutions to suite, which makes us easy to do business with.

Warranty

Nobody repairs like Maddox. Every Maddox repair job is backed by our 3-year warranty.

Worked hard to meet my deadline. very helpful & knowledgeable.

Joshua Hargate

Five Stars

We have used you recently a few times, and will continue to do so as needed, however I have had to go elsewhere many times due to cost of shipping from Maddox puts us over the top for quote, but other than shipping issue, you guys have been great, especially Gabe, very fast and knowledgeable . thank you for everything so far. Tony.

Tony Favia

Five Stars

We've bought numerous transformers from Maddox. Excellent service both before and after the sale. The rebuilt units are coming out looking like brand-new transformers. No surprise up-charges, no problems in shipping. Highly recommend!

Scott Hotsinpiller

Five Stars

Very responsive to inquiry, prompt shipping, protective packaging, on time delivery. Will be back!

Ralph Bloom

Five Stars

Wonderful service. Very responsive, offered all the guidance, and really stayed on top of it (I mean, really did so - send at least 10 emails on confirmation, status of the order, invoice, delivery, instructions on how to receive etc). Shipping was lightning fast (to Dallas, Texas) and without a single issue (this is not the first time I ordered commercial equipment, and every time it's a hassle). I couldn't find the unit for the same price anywhere. Overall, fantastic. I wish all companies cared as much about the product they sell

Alex Ivanov

Five Stars

Website was easy to navigate where I could order my own transformer with little assistance.

Christopher Bizauskas

Five Stars

We had a customer who lost their primary transformer in the middle of the night. Maddox was able to get a temporary transformer on site in hours. They also rebuilt the damaged transformer in record time while no sacrificing any quality. We were able to install and power up the transformer with no issues. The transformer was phased properly and the rotation matched the previous transformer. I would recommend Maddox to anyone for transformer needs.

Nicholas Wagner

Five Stars

Get A Quote

Fill out the form and a member of our team will get back to you as soon as possible. Our average response time during business hours is 30 minutes.

Two Maddox transformer technicians welding on a padmount transformer