Sell a 10 MVA transformer in Texas
Texas Transformer Buyers buys single units and whole lots, any brand, new in crate or used, working or failed. Our yard and office are at 6402 McGrew St, Houston, TX 77087, and we coordinate trucking and pickup statewide.
At this rating, equipment commonly includes a substantial oil-filled tank, external radiators, bushings, control cabinets and sometimes cooling fans. A unit may sit on a permanent foundation, serve a plant substation or form part of a mobile assembly. Send pictures of the complete installation so we can see what is included.
A 10 MVA transformer has a nominal apparent-power rating of 10,000 kVA, or kilovolt-amperes. Typical Texas applications include utility distribution substations, large plants and data center campuses. We buy both substation transformers and large power transformers, including units removed during upgrades or site closures.
| Voltage | Full-load amps | Typical role |
|---|---|---|
| 4,160 V | 1,388 A | Medium-voltage secondary |
| 12,470 V | 463 A | Distribution primary / secondary |
| 13,800 V | 418 A | Distribution primary / secondary |
| 24,940 V | 231 A | Distribution primary / secondary |
| 34,500 V | 167 A | Distribution primary / secondary |
| 69,000 V | 84 A | Transmission primary |
| 138,000 V | 42 A | Transmission primary |
Check any rating with the kVA to amps calculator.
Common voltages and 10 MVA transformer specs
Common primary and secondary voltage combinations include 69 kV to 12.47 kV, 69 kV to 13.8 kV, and 138 kV to 13.8 kV or 34.5 kV. Industrial installations may also use 34.5 kV to 13.8 kV. The primary receives power; the secondary supplies the downstream system, and kV means kilovolts.
These are examples, not requirements for an offer. Winding connections, available taps, frequency and impedance all matter when matching equipment to another installation. Impedance is the transformer's opposition to current flow, expressed as a percentage on the nameplate; it affects fault current and suitability for parallel operation.
Cooling ratings also deserve a clear photo. ONAN means oil natural, air natural cooling; ONAF means oil natural, air forced cooling with fans. A nameplate may show different MVA ratings for these cooling stages, so identify whether 10 MVA is the base rating or a fan-assisted rating.
Full-load amps and why buyers check them
For three-phase equipment, full-load current equals kVA × 1,000 divided by 1.732 × line-to-line volts. At 10,000 kVA, current is approximately 463 A at 12,470 V, 418 A at 13,800 V and 231 A at 24,940 V. A means amperes, the measure of electrical current.
At higher voltages, the same rating corresponds to approximately 167 A at 34,500 V, 84 A at 69,000 V and 42 A at 138,000 V. The table below presents these values for reference. Use the transformer kVA-to-amps calculator when checking another voltage or cooling-stage rating.
Buyers compare these currents with bushings, bus connections, switchgear and protection requirements. Full-load amps do not establish the transformer's condition or its overload capability. They help determine whether its capacity and voltage configuration fit the intended service.
What affects value and demand at this size
Demand for a 10 MVA unit depends on matching a project's electrical requirements, not capacity alone. Utility replacements, industrial upgrades and campus expansions can create a use for this size. A ready-to-evaluate unit with clear records is easier to assess than one with unknown voltages or missing components.
A used 10 MVA transformer is evaluated on its voltage combination, cooling ratings, age, condition and included accessories. Tap-changing equipment, bushing condition, leaks, corrosion and missing radiators or controls affect the assessment. Failure history matters too: describe what happened rather than labeling every retired unit as failed.
Recent test reports can clarify condition. DGA, or dissolved gas analysis, checks gases in insulating oil that may indicate internal problems. Include electrical test results and any PCB documentation; PCB refers to polychlorinated biphenyls, substances historically used in some insulating fluids.
As a 10 MVA transformer buyer, we also consider removal access and freight requirements when preparing an offer. If your project includes 7.5 MVA units, list those separately rather than grouping different ratings under one description.
Nameplate details and photos to send
Start with a readable, straight-on picture of each nameplate, plus overall views from several sides. Our transformer nameplate guide can help you locate the key information. Include separate plates for tap changers or other major accessories when available.
- Manufacturer, serial number, manufacturing date, quantity and each unit's MVA ratings.
- Primary and secondary voltages, tap range, winding connections, frequency and percentage impedance.
- Cooling designations, listed weights, fluid information and any separate shipping-weight information.
- Condition, last known operating status, reason for removal, test reports and known damage or missing parts.
- Site location, access photos and whether radiators, bushings, controls and associated equipment are included.
Weight, rigging and trailer planning
Use the nameplate's exact weights rather than estimating from the MVA rating. Distinguish total assembled weight from any listed shipping or untanking weight. Drawings and shipping records help clarify the load configuration and which components may need separate transport.
Trailer selection depends on verified weight, dimensions, route restrictions and how the equipment will be loaded. Rigging planning also needs confirmed lifting points, equipment access and suitable ground conditions. Photograph gates, overhead obstructions, the foundation and the available loading area.
The unit has to be de-energized and disconnected by the seller or the seller's qualified electrician. We work out trucking and load-out with you. For mobile substation equipment, include trailer and assembly information so transport planning covers the complete package.
Get an offer for your Texas transformer
To sell a 10 MVA transformer, call or text (951) 403-5738, email Industrial832@gmail.com, or send your transformer details for an offer. Include your nameplate photo, overall photos, quantity, location and condition. Once we have reviewed the details, we respond with an offer.
Tell us whether the unit is still installed, already disconnected or stored off-site. For a lot, identify each transformer and note any shared removal constraints. You get the price, payment terms and pickup details in writing before a truck is loaded.
Frequently asked questions
Can I sell a failed 10 MVA transformer?
Yes. We buy failed equipment as well as working units. Send the nameplate, photos and a description of the failure, including any available test findings and visible damage. Identify missing components so the assessment covers the unit as it stands.
What if the nameplate shows several MVA ratings?
Send the entire plate and describe which fans or cooling equipment remain with the transformer. Multiple ratings commonly correspond to different cooling stages. Do not assume the highest rating represents the unit's capacity without those components operating.
Do you buy a 10 MVA transformer still installed at a substation?
Yes, we can assess installed equipment for an offer. Include access photos and your expected removal plan. Electrical isolation and disconnection remain the seller's responsibility, while freight and load-out are coordinated with the seller.
Does a 69 kV primary make my unit more valuable?
Primary voltage alone does not determine value. The secondary voltage, winding configuration, condition, cooling ratings and transport requirements also affect the assessment. Send the full nameplate rather than only the primary voltage.
Can you assess a transformer stored outside Houston?
Yes. We buy across Texas from our Houston base and coordinate trucking and pickup. Send the actual storage location, access information and photos showing the transformer's current condition.