What we buy
Ranges we buy on this page
Transformer Buyers NC buys used, surplus, failed and obsolete 300 kVA transformers anywhere in North Carolina. This page covers three-phase padmounts and small plant substation units, including identification, oil condition, shipping weight and load-out requirements.
| Phase | kVA | Voltage | Fluid |
|---|---|---|---|
| 1 or 3-phase | 300 kVA | up to 34.5 kV | Liquid or dry |
| 3-phase | 50 - 20,000 kVA | 46 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
The 300 kVA class
A 300 kVA rating describes apparent power capacity, not the transformer's physical size or remaining service life. In North Carolina plant yards, this class commonly appears as a three-phase padmount or a small substation unit.
The nameplate establishes the rating, phase count, cooling designation and winding connections.
Two 300 kVA units can require different removal plans. A compartmental padmount has enclosed cable terminations, while a small substation transformer may connect through exposed bushings or a flange to adjacent equipment.
Photographs of the tank, radiator arrangement and terminal compartments help distinguish the construction before inspection.
Local reality
Typical North Carolina applications
At a Piedmont manufacturing plant, a 300 kVA transformer may serve a separate process building, maintenance shop or packaged production line. A three-phase padmount keeps primary cable connections inside a locked compartment.
Records should identify the loads served and whether the transformer belongs to the plant or utility.
Hospital facilities teams and demolition contractors in Raleigh or Wilmington may encounter this size feeding an outbuilding or isolated mechanical load. Before removal, confirm that downstream panels no longer depend on it.
Utility-owned equipment requires owner authorization; its presence on a facility's pad does not establish facility ownership.
Around the site
Shipping weight and footprint
Shipping weight for a 300 kVA transformer is roughly 2,400 to 3,600 pounds, but the nameplate or manufacturer's drawing takes precedence. Oil volume, tank construction and attached compartments affect the total.
Record whether the stated weight includes insulating liquid, radiators and accessories that will travel with the unit.
Measure the actual tank and compartment footprint rather than estimating from the concrete pad. For a North Carolina plant load-out, include radiator projections, door swing and the highest bushing or lifting fitting.
Those dimensions determine clearance through a gate and placement on the flatbed without contact with vulnerable parts.
Where it sits
Rigging and load-out
A 20-ton crane and a flatbed with a winch can form the handling plan for this 300 kVA class. Crane capacity must still be checked at the actual lift radius.
The roughly 2,400-to-3,600-pound shipping range does not account for poor setup ground or an obstructed approach.
Use designated lifting points and a spreader bar where the manufacturer's instructions require one. Keep slings off bushings, radiator fins and cabinet doors.
A winch does not make unsupported dragging acceptable; establish the transfer method, trailer restraint points and clear landing area before disconnecting the final mechanical attachments.
On the ground
Primary and secondary voltages
Read both voltage ratings directly from the 300 kVA nameplate. A North Carolina installation may use a 12,470-volt primary and a 480Y/277-volt secondary, but site location alone cannot establish either rating.
Record the connection diagram, tap positions and insulation level rather than relying on an old panel label.
At 480 volts, a three-phase 300 kVA rating corresponds to approximately 361 amperes at full load. That calculation helps check documentation, not prove winding condition.
Photograph primary elbows or bushings and secondary terminals, then note missing connectors, damaged studs or evidence that a compartment has been modified.
Local reality
Inspection and oil test
Inspect a de-energized 300 kVA unit for gasket leaks, tank corrosion, cracked bushings and distorted radiator panels. A failed transformer from a Greensboro plant needs a clear fault history: external cable failure, winding fault, overheating or protective-device operation.
Record what happened without treating an intact enclosure as proof of health.
For an oil-filled unit, provide existing laboratory reports with sample dates and transformer identification. Moisture, dielectric breakdown and dissolved gas results describe different aspects of condition. PCB documentation also matters for handling decisions.
Sampling must follow the site procedure; opening a drain valve casually can introduce contamination or release oil.
Around the site
Valuation for this size
Evaluation of a 300 kVA transformer starts with its nameplate, construction and documented condition. Copper or aluminum windings, voltage configuration, age and completeness help determine the appropriate disposition.
A legible serial number links the equipment to test reports, maintenance records and manufacturer drawings supplied by the North Carolina owner.
Removal conditions belong in the same assessment as electrical condition. A complete 300 kVA padmount beside an accessible loading area differs from a damaged unit behind a narrow plant gate.
Provide ownership authorization, oil records, photographs and the proposed crane location so the review accounts for equipment and site constraints.
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 300 kVA transformers?
Yes. Transformer Buyers NC buys failed 300 kVA transformers across North Carolina. Document the failure event, any oil release and damage to the tank or bushings. Existing test reports and photographs help distinguish a winding failure from a cable or termination fault.
Service area
What weight should the rigging crew use?
The typical shipping range is roughly 2,400 to 3,600 pounds, but use the specific unit's nameplate or manufacturer documentation for lift planning. Confirm which accessories and oil are included. A 20-ton crane still requires a capacity check at the planned radius.
Payment
Which records identify a 300 kVA padmount?
Provide a readable nameplate photograph, serial number, voltage ratings and connection diagram. Include ownership authorization, available oil reports and pictures of both cable compartments. For a North Carolina facility, identify whether the padmount is facility-owned or utility-owned before planning its removal.
Logistics
Primary and secondary voltages: what should a seller know?
Read both voltage ratings directly from the 300 kVA nameplate. A North Carolina installation may use a 12,470-volt primary and a 480Y/277-volt secondary, but site location alone cannot establish either rating.