Kuhlman Electric built distribution and instrument transformers in Versailles, Kentucky. Kuhlman pole-mount and pad-mount units are found on many older utility and cooperative systems. When those units leave service or remain unused in storage, the useful starting point is the actual nameplate, not an estimate based on tank size or the circuit they once served.
We buy surplus, used, new-surplus and decommissioned Kuhlman distribution transformers from sellers throughout Virginia. Failed units receive case-by-case review. Our transformer brands overview covers other makes, but this page focuses on identifying Kuhlman equipment and documenting the details that matter when selling it. Brand names describe equipment only; Virginia Transformer Buyers is an independent buyer and is not affiliated with Kuhlman Electric or any other manufacturer.
01Separate Kuhlman distribution units from instrument transformers
A Kuhlman nameplate can appear on equipment with very different functions. Distribution transformers supply load power at a changed voltage. Instrument transformers provide scaled current or voltage signals for metering and protection. Do not group both types under a single kVA estimate or assume that a small tank identifies an instrument transformer.
For single-phase pole-mount transformers, photograph the tank, mounting brackets, bushings and nameplate. For pad-mount distribution transformers, show the enclosure, doors and exterior condition. We buy single-phase distribution units from 10 kVA and three-phase units from 15 kVA through MVA-class equipment; identify instrument units separately so their actual ratings and application are clear.
- Distribution units: record kVA, phase, primary voltage and secondary voltage.
- Current transformers: record current ratio, accuracy designation and burden information shown on the plate.
- Voltage transformers: record voltage ratio, accuracy designation and burden information shown on the plate.
- Mixed lots: separate distribution transformers from current and voltage transformers in the inventory.
02Read the Kuhlman nameplate before building the inventory
Send a straight-on photograph with enough resolution to read the manufacturer, serial number and ratings. Record the manufacturing year when it appears, rather than substituting an installation date or a handwritten storage tag. A readable serial number helps keep each plate matched to the correct unit in a multi-transformer lot.
Voltage notation matters. A plate marked 12470GrdY/7200 describes a grounded-wye primary system designation; it should not be shortened to an unexplained “12 kV.” Similarly, 480Y/277 identifies a different secondary arrangement from a plate marked 240/120. Use our guide to reading transformer nameplates to organize the information without guessing at faded characters.
- Manufacturer name, serial number and year, if listed.
- Rated kVA, number of phases and frequency.
- Primary and secondary voltages, connection markings and tap positions.
- Impedance, insulation level and cooling designation, where shown.
- Fluid type, fluid quantity and total weight, where listed.
- Applicable standards markings, such as IEEE C57 references, without treating them as current test results.
03What matters on older Kuhlman pole-mount units
We pay attention to the electrical ratings and the physical condition of each Kuhlman pole-mount transformer. Show broken or missing bushings, damaged mounting brackets, corrosion around seams and any visible fluid leakage. Note whether the unit was operating when removed, retired for a system change, held as a spare or removed after a fault.
For units formerly used in a three-transformer bank, list each transformer individually. Three single-phase transformers do not become one three-phase nameplate rating simply because they worked together. Match each serial number to its kVA and voltages, and identify any replacement unit with a different rating or connection arrangement. A mixed bank should not be described as three identical transformers without checking the plates.
04Document pad-mount connections, accessories and condition
Kuhlman pad-mount units need more description than “green cabinet transformer.” Record whether the unit is single-phase or three-phase, and identify radial-feed or loop-feed construction if that information is documented. Connection type, primary voltage, secondary voltage and tap range help distinguish units that look similar from the outside.
Photograph labels for switches, fuses and connection arrangements only when they are safely accessible. Do not open energized compartments to obtain sales photos. Describe enclosure damage, missing doors, bushing damage or evidence of leakage. For a unit in the 150 kVA transformer size category, the phase and voltage details remain essential; kVA alone does not establish interchangeability.
05Fluid records and operating history affect the review
Older Kuhlman oil-filled units require clear fluid documentation. PCB status must be disclosed and documented; age, paint color and a previous owner's verbal description do not establish it. Send available fluid reports and labels, and distinguish original records from later service or fluid-change records. We do not ask sellers to drain fluid.
Describe known overheating, fault exposure, repairs or extended outdoor storage. If test reports exist, keep the test date and serial number visible so the results can be matched to the unit. Failed or damaged transformers receive case-by-case review. We do not provide engineering, legal or environmental advice, and sellers must use their own qualified electricians to de-energize and disconnect equipment.
06Selling Kuhlman equipment from Virginia inventories
Typical sources to check include utility and cooperative retirement inventories, contractor storage, facility replacements and unused project stock. In a Virginia yard containing older Kuhlman equipment, separate serviceable spares from failed units and unidentified tanks. Label each unit for the photos and inventory so quantities, serial numbers and condition notes stay aligned.
To sell Kuhlman Electric transformer equipment, send nameplate and overall photos, location, quantity and condition through our equipment offer form. We review the details and may ask about PCB status, test data or site access. If the equipment fits, we send a written offer stating price, freight, loading and payment terms; pickup is scheduled with you, and payment follows those terms. See how the buying process works for details.
Frequently asked questions
Can I sell a Kuhlman pole-mount transformer removed from a cooperative system?
Yes, we buy qualifying Kuhlman pole-mount distribution transformers removed from service, including single-phase units from 10 kVA. Provide the individual nameplate, removal reason and present condition. A cooperative asset tag can help organize the inventory, but it does not replace the manufacturer's ratings or documented PCB status for fluid-filled equipment.
What if the year is missing from my Kuhlman transformer nameplate?
Send the readable nameplate information even if the manufacturing year is missing. Include the serial number, kVA, voltages and any separate manufacturer labels. Do not assume an installation date is the manufacturing date. Photograph faded markings from different angles, and label uncertain readings as uncertain rather than entering a guessed year.
Are Kuhlman current transformers valued like distribution transformers?
No, current transformers need different identification from distribution transformers. Their current ratio, accuracy and burden markings describe their metering or protection function; a distribution transformer's kVA and output voltages describe load-power service. Send instrument-transformer photos and ratings separately for review rather than listing them as small pole-mount units or assigning an estimated distribution kVA.
Can I list three Kuhlman pole transformers as one bank?
You can identify their former bank arrangement, but list all three transformers individually. Record each serial number, kVA, primary voltage, secondary voltage and condition. Explain any known differences among the units. Individual records are particularly important when a bank contains a replacement transformer or when only part of the original bank remains available.
Does an old Kuhlman transformer need PCB documentation?
PCB status must be disclosed and documented for fluid-filled Kuhlman equipment. A manufacturing year alone is not sufficient evidence of fluid status. Send available reports, fluid labels and relevant service records tied to the unit. If documentation is unavailable, state that clearly rather than describing the transformer as non-PCB without supporting records.
Do you buy Kuhlman transformers outside Virginia?
Yes, Virginia Transformer Buyers also reviews equipment in neighboring states and nationwide on request. Include the equipment location and access details with the Kuhlman nameplate photos. Freight and loading responsibilities are specified in any written offer; do not assume pickup is free or that electrical disconnect work is included.