We buy Siemens transformers from sellers throughout Virginia, including new-surplus equipment, operating takeouts and decommissioned units. A commercial building’s low-voltage dry-type transformer and an industrial site’s oil-filled substation transformer need different information for review. Start with the transformer itself, not just the Siemens name on nearby electrical gear.
Siemens low-voltage dry-type transformers are common in commercial buildings alongside Siemens switchboards and panelboards. That does not make every Siemens-labeled cabinet a transformer. Our transformer nameplate guide helps identify the actual unit, its electrical ratings and the details needed to describe it accurately.
01Which Siemens transformers do we buy?
We buy Siemens power and substation transformers, GEAFOL cast resin transformers, dry-type transformers and transformers supplied as part of unit substations. Our buying range starts at 10 kVA for single-phase units and 15 kVA for three-phase units, extending through MVA-class power transformers.
New-surplus units may still have shipping protection and unused accessories. Used units may come from building renovations, plant changes or substation replacements. Describe whether the transformer is installed, disconnected, stored indoors or stored outside; those conditions tell us more than a listing that simply says “used Siemens.”
For larger substation transformer equipment, identify any attached primary switches, secondary switchgear, radiators or separate accessory cabinets. Show what is included in the sale and what will remain at the site. A photograph of the complete assembly helps distinguish a standalone transformer from a unit substation.
02Read the transformer nameplate, not the adjacent cabinet
Send a straight-on, readable photograph of the transformer nameplate. We pay attention to manufacturer identification, serial number, year of manufacture when shown, kVA or MVA, phase, frequency, primary and secondary voltages, winding connections and taps. Preserve the exact voltage notation rather than shortening it to “12 kV” or “480 volts.”
A rating such as 12470GrdY/7200 conveys information that a rounded voltage description leaves out. Likewise, 480Y/277 identifies a wye-connected secondary with a neutral rating. Photograph the connection diagram, impedance and temperature-rise information if they appear on a separate label.
On liquid-filled units, include fluid type, fluid quantity and cooling ratings such as ONAN or ONAN/ONAF. On dry-type units, show insulation class and enclosure information. If a plate is damaged, send close-ups from several angles plus any matching records; do not substitute a switchboard serial number for the transformer serial number.
03GEAFOL cast resin and low-voltage dry-type units
Siemens markets cast resin transformers under the GEAFOL name. For a GEAFOL unit, photograph the rating plate, resin windings, terminals, tap links and enclosure, if supplied. Note visible cracks, impact marks, contamination or missing temperature-monitoring components rather than describing every non-oil transformer as the same type.
Our cast resin transformer page covers this equipment category separately from conventional dry-type units. Clear views of all three phases help show winding condition and completeness. Have qualified personnel handle any access that requires opening electrical equipment; do not expose energized components for photographs.
For Siemens low-voltage dry-type transformers, include the enclosure label and winding connection diagram. Commercial takeouts may have paint, dust or removed conduit fittings, so show the cabinet and terminal area accurately. If you have a 45 kVA transformer, send its actual voltage and phase ratings rather than relying on size alone.
04Power transformers, Siemens Energy and unit substations
Siemens Energy was spun off from Siemens AG in 2020 and carries the power transformer business. Send the manufacturer wording exactly as it appears on your unit’s nameplate. The name, serial number and manufacturing year help identify the equipment without assuming that every Siemens-branded transformer belongs to the same product category.
For power transformers, show bushings, radiators, conservator equipment if present, gauges and control cabinets. Include available test reports and note whether accessories have been removed for transport. Cooling ratings matter: a unit with multiple ratings should be described with each nameplate rating and its corresponding cooling class.
For a unit substation, photograph the transformer plate separately from plates on adjoining switches or switchgear. Identify connections between sections and any loose transition pieces. Tell us whether the sale includes the entire assembly or only the transformer, since the surrounding Siemens equipment does not establish the transformer’s rating or condition.
05What matters beyond the Siemens brand
To sell Siemens transformer equipment, give us a clear account of its condition and configuration. We pay attention to usable ratings, winding connections, completeness, storage history and available documentation. The Siemens name identifies the equipment; it does not replace the electrical and physical details needed for a written offer.
For oil-filled units, disclose and document PCB status. Identify mineral oil or FR3 natural ester only when supported by the nameplate or records. Report leaks, damaged bushings, missing radiators and known faults, and do not drain fluid to prepare the transformer for sale.
Failed or damaged Siemens units are reviewed case by case. Describe the known failure, whether any testing followed the event and which parts remain intact. For sound surplus equipment, distinguish unused stock from equipment removed after service; photographs of packaging alone do not establish operating condition.
06Siemens transformer surplus from Virginia sites
Typical sources include commercial building renovations, industrial electrical upgrades, utility substation replacements and unused project inventory. A building seller may have several low-voltage dry-type units with different secondary ratings, while an industrial seller may have a complete unit substation. We serve sellers in every region of Virginia.
Keep a separate photo set and equipment identifier for each unit. Note its location, approximate dimensions, any documented weight and access restrictions such as basement placement or limited loading space. Sellers must use their own qualified electricians to de-energize and disconnect equipment; we do not perform electrical disconnect work.
Send nameplate photos, overall photos, location, quantity and condition through Get an Offer. We review the information and may ask about PCB documentation, test data or access. If the equipment fits, our written offer spells out price, freight, loading and payment terms; pickup is scheduled with you and payment follows those terms. See how the sale works for details.
Frequently asked questions
Can I sell a Siemens GEAFOL transformer without its enclosure?
Yes, we buy Siemens GEAFOL cast resin transformers, and you should disclose whether the enclosure is included or missing. Send photographs of the resin windings, terminals, tap links and nameplate. Also identify missing monitoring components or other accessories. Completeness and visible condition matter when we review the unit; damaged units are handled case by case.
Is a Siemens switchboard nameplate enough to identify my transformer?
No, a Siemens switchboard nameplate does not establish the connected transformer’s ratings or serial number. Photograph the transformer’s own plate and connection diagram. For a unit substation, provide separate images of the transformer and adjoining gear, plus a wide view of the assembly. Specify which sections are included in the sale.
Do you buy transformers labeled Siemens Energy?
Yes, we buy power transformers labeled Siemens Energy as well as Siemens-branded equipment. Siemens Energy was spun off from Siemens AG in 2020 and carries the power transformer business. Send the exact manufacturer identification, serial number, manufacturing year when shown and complete electrical ratings. We are an independent buyer, not affiliated with either manufacturer.
Can I sell several Siemens dry-type transformers from a building renovation?
Yes, we buy multiple Siemens dry-type transformers from building renovations. Photograph each nameplate separately and label the photos so ratings are not mixed between units. Include quantity, condition and location, and identify which units remain installed. Similar-looking cabinets can contain different kVA ratings, voltages or winding connections, so one representative plate is not enough.
Are you affiliated with Siemens or Virginia Transformer Corp?
No, Virginia Transformer Buyers is an independent buyer and is not affiliated with Siemens, Siemens Energy or Virginia Transformer Corp of Roanoke. Brand names describe the equipment we buy, not a manufacturer relationship. Our equipment brands page provides context for selling transformers from different manufacturers, including mixed-brand surplus from one site.