What we buy
Ranges we buy on this page
Transformer Buyers NC buys used, surplus, failed and obsolete unit substations anywhere in North Carolina. This page covers integrated transformer and switchgear assemblies being removed from industrial plants, hospitals, campuses and data center yards.
| Phase | kVA | Voltage | Fluid |
|---|---|---|---|
| 3-phase | 500 - 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
What a Unit Substations is
A unit substation combines a transformer, switchgear and protective devices in one integrated assembly. The transformer section connects directly to adjacent equipment through coordinated bus connections or enclosed transitions.
A typical arrangement has primary switching, the transformer and secondary distribution gear, with separate compartments rather than one undivided enclosure.
The package boundary matters during removal. A transformer nameplate does not describe the adjoining breaker lineup, primary switch or bus transition. Record each section's manufacturer, serial number and ratings.
Drawings should show which compartments belong to the assembly and where incoming cables, outgoing feeders and grounding conductors leave it.
Local reality
Where Unit Substations turn up in North Carolina
North Carolina industrial plants often place unit substations near production loads, in electrical rooms or along exterior service yards. A plant shutdown may leave the transformer intact while breakers or protective relays have already been removed.
Photographs of the full lineup help distinguish a complete package from disconnected sections.
Hospitals, campuses and data center yards can have several similar assemblies serving different buildings or load blocks. Equipment labels need to match the one-line diagram, not just a building nickname.
Before removal, the facility must identify alternate feeds, tie breakers and any circuits that remain energized beside the designated substation.
Around the site
What we check before we quote
We check the package's completeness, the switchgear condition and whether the sections can be separated. Useful photographs show the transformer nameplate, breaker compartments, primary switch, bus transitions and both ends of the lineup.
Missing doors, removed breakers and cut bus bars should be identified rather than hidden behind closed panels.
Separation details can determine whether removal is practical. Bolted bus joints, shipping splits and accessible lifting points are different from field modifications or welded obstructions.
Provide the assembly drawing when available, along with fault history, relay records and photographs of damaged bushings, scorched insulation or water inside the switchgear compartments.
Where it sits
Oil, PCBs and testing
A unit substation may contain a liquid-filled transformer or a dry-type transformer; the adjoining switchgear does not establish which one it is. For liquid-filled sections, document the insulating fluid, leaks, sample dates and laboratory reports.
Tank labels and maintenance records help establish what testing is needed before handling or removal.
PCB status must not be assumed from the age of the switchgear lineup or an unreadable transformer label. Review fluid test results and applicable handling requirements before draining or transport.
Dry-type sections need different evidence: winding condition, insulation test records, contamination and signs of overheating at terminals or bus connections.
On the ground
Rigging, weight and transport
A unit substation is moved in sections, and the bus connections are the part that gets damaged. Disconnect bolted joints at the intended shipping splits instead of forcing adjoining enclosures apart.
Label transition pieces, retain hardware and protect exposed bus ends against bending, impact and moisture throughout loading and transport.
Use section weights from drawings or verified equipment records, not the total assembly weight divided evenly. The transformer section can impose a very different load from an adjoining switchgear bay.
Rigging plans should address approved lift points, spreader bars, door clearance, slab capacity and the route to a lowboy.
Local reality
What moves the number
The technical assessment starts with the whole assembly: transformer rating, primary and secondary voltage, switchgear ratings and protective device identification. A readable transformer plate alone leaves important gaps.
Complete bus transitions, intact breaker compartments and documented shipping splits give a clearer picture than photographs showing only the tank or coils.
Condition and removal constraints shape the assessment as much as ratings. An arc-damaged bus compartment, missing primary switch or flooded breaker lineup changes the scope. So does a basement installation with restricted headroom.
Keep failed sections identified separately, and distinguish equipment damage from temporary dismantling performed for access or maintenance.
Around the site
When to call us about a unit substations
Contact is most useful before crews cut bus connections, remove breakers or discard transition compartments. During a plant closure or campus electrical upgrade, preserve the lineup long enough to photograph its sections and labels.
A planned outage date, equipment location and responsible site contact help establish a workable removal sequence.
For failed equipment, wait until the facility's authorized personnel have isolated the assembly and established safe access. Include the failure report, any fluid test results and the proposed demolition schedule.
Transformer Buyers NC buys these assemblies across North Carolina, including obsolete packages whose transformer and switchgear sections require separate handling.
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
Can you assess an incomplete unit substation assembly?
Yes. Identify missing breakers, primary switches, protective devices and bus transitions before the assessment. Send photographs of every remaining section and its nameplate. An incomplete lineup needs to be described as separate surviving components rather than presented as a complete integrated assembly.
Service area
Should crews disconnect the bus before the assessment?
Photograph bus transitions and shipping splits before dismantling, whenever safe access permits. Authorized crews should disconnect only after isolation and an approved removal plan. Cutting or bending the bus can damage the connections needed to understand how the transformer and switchgear sections fit together.
Payment
What records help plan unit substation removal?
Gather the one-line diagram, assembly drawing, section weights, transformer and switchgear nameplate photographs, and available test reports. Include fluid and PCB documentation for liquid-filled transformers. Note doorway dimensions, lifting access and any adjacent energized lineup that will remain in service during removal.
Logistics
Oil, PCBs and testing: what should a seller know?
A unit substation may contain a liquid-filled transformer or a dry-type transformer; the adjoining switchgear does not establish which one it is. For liquid-filled sections, document the insulating fluid, leaks, sample dates and laboratory reports.