What we buy
Ranges we buy on this page
Transformer Buyers NC buys used, surplus, failed and obsolete medium-voltage dry-type transformers anywhere in North Carolina.
Plant engineers, hospital facilities directors, university asset managers and demolition crews can use it to prepare nameplate records, winding-condition reports and a removal plan for basement units with restricted door clearance.
| Phase | kVA | Voltage | Fluid |
|---|---|---|---|
| 1 or 3-phase | 15 - 20,000 kVA | 34.5 kV | Liquid or dry |
Who we buy from
Six kinds of seller
- Recyclers
- Electrical contractors
- Equipment dealers
- End users
- Demo contractors
- Distributors
Fast offers
A written offer the same business day, based on your photographs.
Dedicated logistics
Our own crew, trailer and crane, not a brokered haul.
No broker fees
One buyer from first call to cleared pad, with nothing skimmed.
How it works
Six steps from photograph to payment
- 01
Take pictures
Photograph the nameplate, the inside of the cabinet and the tank from both ends. Four frames on a phone are enough to price most units.
- 02
Send them to us
Email or text the photographs with the site address and whether the unit is still energised. We reply the same business day with questions or a number.
- 03
Review the offer
The offer names the unit, the site, the price and the pickup window. It is written, dated and good for thirty days unless the unit changes hands.
- 04
We schedule freight
A crew, a trailer and a crane if the pad needs one. You get the date and the arrival window, and the site does not have to close for it.
- 05
Testing on arrival
Winding resistance, insulation resistance and a turns ratio check, plus oil analysis where the unit is liquid-filled. Results travel with the unit.
- 06
Get paid
Payment is released against the signed bill of sale and the scale ticket, by check or ACH, with the paperwork copy left on site.
What we handle
The parts sellers dread
Rigging
Crane, skates and a route survey for anything that will not roll onto a trailer.
Oil containment
Pans, absorbent and a spill plan before a drain plug is touched.
Bill of sale
A document that clears a lien, a lease or a bankruptcy file, not a handwritten note.
PCB paperwork
Testing and manifesting for pre-1979 oil, handled before the unit moves.
On the ground
Medium-Voltage Dry-Type Transformers explained
A medium-voltage dry-type transformer uses solid insulation and air cooling rather than an insulating-liquid tank. Cast-coil windings are encapsulated in resin; vacuum-pressure-impregnated, or VPI, windings receive an insulating varnish treatment.
These units commonly step down a 2.4 kV to 15 kV class primary to a low-voltage secondary such as 480 volts.
The nameplate identifies the actual primary voltage, secondary voltage, kVA, impedance, insulation level and temperature rise. A 15 kV class designation is not the same as a 15 kV operating voltage.
Connection diagrams, tap positions and enclosure markings help distinguish units that look similar through a ventilated steel door.
Local reality
The North Carolina install base
North Carolina data centers and semiconductor plants use medium-voltage dry-type transformers where indoor distribution and process loads favor equipment without an insulating-liquid tank. A retired unit may come from a capacity change rather than a winding failure.
Its service records should identify load changes, cooling arrangements and the original electrical-room configuration.
Hospitals and university distribution systems also place these transformers inside buildings, sometimes below grade. Around campuses in Raleigh, Durham and Chapel Hill, removal planning must account for occupied corridors and controlled access.
A basement installation with a single 8-foot door can dictate the handling sequence before rigging equipment reaches the room.
Around the site
The inspection that decides value
Partial discharge history matters because discharge within insulation or along contaminated surfaces can indicate deterioration before a complete winding failure. Test reports need dates, test conditions and identification matching the nameplate.
A single reading without its method or baseline gives less usable evidence than a documented trend from the same unit.
Winding inspection looks for resin cracks, tracking, displaced conductors, loose blocking and deposits that restrict cooling passages. Fan cooling checks include motor condition, controls, temperature sensors and evidence of failed operation.
The enclosure's rating also matters: damaged panels or altered ventilation can change the protection provided in a dusty electrical room.
Where it sits
Fluid condition and PCB status
The main insulation system in a cast-coil or VPI transformer does not use insulating oil, so an oil sample is normally not part of its assessment. Fluid-condition questions instead begin with confirming the equipment type.
A dry-type nameplate and photographs of the exposed coil assembly help prevent confusion with nearby liquid-filled equipment.
PCB status should follow documentation rather than an assumption based only on age or location. Record any attached components or contamination associated with adjacent oil-filled equipment, and retain relevant environmental reports.
A basement dry-type unit exposed to an oil spill needs that history disclosed even though its own windings contain no insulating liquid.
On the ground
Getting it off the pad
Medium-voltage dry-type units are heavy for their footprint, with concentrated weight in the core and winding assembly. Start with the documented weight, base dimensions and approved lifting points. Enclosure sheet metal is not a lifting point.
A rigger needs to confirm floor capacity and the load path from the equipment pad.
A single 8-foot basement door requires measured clearance, not a guess from the enclosure height. Check the opening width, overhead obstructions, turns, thresholds and route to the loading area.
Any proposed enclosure removal needs manufacturer guidance and qualified review; exposed coils must remain protected from impact, moisture and debris during handling.
Local reality
What a buyer weighs up
A buyer evaluates the winding construction alongside primary voltage, secondary voltage, kVA, impedance and insulation level. Cast-coil and VPI units are not interchangeable merely because their ratings match.
Service history, storage conditions and any repair documentation help establish what the specific core-and-coil assembly has experienced since it left the manufacturer's facility.
Failed equipment needs a clear account of the event: ground fault, overheating, water intrusion, tracking or mechanical damage. Photographs should show each winding face, terminals, fans, enclosure and nameplate.
A disconnected 13.8 kV primary lead alone says little about condition; relay records and test reports can explain why the transformer was removed.
Around the site
The next step for a medium-voltage dry-type
Prepare a record with the North Carolina site location, nameplate photographs, overall dimensions, documented weight and present connection status. Include partial discharge reports, winding tests, fan-control information and enclosure markings when available.
Note whether the unit remains in a hospital basement, university electrical room or semiconductor plant service area awaiting removal.
Transformer Buyers NC buys these units in used, surplus, failed and obsolete condition. Assessment and pickup planning depend on the particular transformer and its access route.
Identify the person responsible for isolation, the available rigging space and any scheduled building shutdown before a removal sequence is agreed for a restricted basement doorway.
Get started
Get an offer in minutes
Five fields is all it takes. Photographs help, but a nameplate and a town are enough to start.
No fee, no obligation. We reply the same business day.
Tell us what you have
We reply the same business day.
Questions
Straight answers
Equipment types
Do you buy failed medium-voltage dry-type transformers?
Yes. Transformer Buyers NC buys failed cast-coil and VPI units as well as used, surplus and obsolete equipment. Describe the failure and provide nameplate photographs, winding photographs and any test or relay reports. Disclose water exposure, tracking, overheating and damage to the core-and-coil assembly.
Service area
Does a dry-type transformer need an oil sample?
A cast-coil or VPI transformer normally has no insulating-liquid tank to sample. Confirm the equipment construction from its nameplate and coil photographs. Environmental records still matter if adjacent oil-filled equipment leaked onto it or if attached components require a separate PCB-status review.
Payment
Can a basement transformer fit through one doorway?
That depends on measured dimensions, documented weight and the full removal route. An 8-foot door height alone does not establish clearance. Door width, turns, thresholds, floor capacity and overhead obstructions must be checked, with any enclosure disassembly reviewed against manufacturer guidance before rigging begins.
Logistics
Getting it off the pad: what should a seller know?
Medium-voltage dry-type units are heavy for their footprint, with concentrated weight in the core and winding assembly. Start with the documented weight, base dimensions and approved lifting points. Enclosure sheet metal is not a lifting point.