Sell 75 kVA Transformer Equipment in Virginia

01What the 75 kVA three-phase rating means

A 75 kVA rating describes the transformer's rated apparent-power capacity under its specified operating conditions. On a three-phase nameplate, that is the total rating across all three phases, not 75 kVA per phase. It also does not mean the connected load continuously uses 75 kW; real power depends on power factor.

Current changes with voltage even though the kVA rating stays the same. For three-phase equipment, full-load line current is kVA × 1,000 ÷ (√3 × line-to-line volts). For example, a 75 kVA transformer at 208 V gives 75,000 ÷ (1.732 × 208), or approximately 208 A. Use the amp table on this page for other listed voltages, and see our kVA and full-load amps guide for context.

02Common voltage combinations at 75 kVA

For indoor building distribution, 480 V primary to 208Y/120 V secondary is a familiar configuration. The 208 V figure is the secondary line-to-line voltage; 120 V is line-to-neutral. We also buy 75 kVA units with other nameplate combinations, including 240 V or 480Y/277 V secondaries. The exact winding connection matters as much as the voltage numbers.

A three-phase pad-mount may instead have a medium-voltage primary, such as 12470GrdY/7200, and a low-voltage secondary such as 208Y/120. That primary designation describes grounded-wye system voltages; it should not be shortened to an ordinary 7,200 V three-phase configuration. Photograph the connection diagram, tap information and complete voltage markings so we can identify the equipment correctly.

• Record primary and secondary voltages exactly as printed.
• Include delta or wye markings and any neutral designation.
• Show the available taps and the indicated tap position, if visible.
• Photograph frequency, impedance and winding material when listed.

Full-load amps for a 75 kVA three-phase transformer

The amp table on this page uses the standard formula Amps = kVA × 1,000 ÷ (1.732 × line-to-line volts). Match the voltage on your nameplate to read the rated full-load current of each winding.

03Dry-type and pad-mount units need different details

We buy 75 kVA dry-type transformers from building replacements, equipment changes and surplus inventories. Useful details include copper or aluminum windings, temperature rise, insulation class and enclosure condition. Ventilated indoor units commonly have sheet-metal enclosures, but enclosure appearance alone does not establish the winding condition or suitability for outdoor use.

We also buy three-phase pad-mount transformers at this rating. For these units, show the tank, accessible exterior markings, bushings where safely visible, and any signs of leaks or damage. Fluid type, cooling designation and documented PCB status matter. Do not open energized compartments or drain fluid to prepare equipment for sale; PCB status must be disclosed and documented.

04Confirm 75 kVA on the actual nameplate

Look for a field labeled kVA, rated kVA or capacity, then confirm that the phase field identifies three-phase equipment. A nearby panel label or handwritten inventory tag is not a substitute for the transformer nameplate. Photograph the entire plate square-on, with enough detail to read the manufacturer, serial number, voltage ratings and connection diagram.

Do not round a neighboring rating to 75 kVA. A 45 kVA transformer and a 112.5 kVA transformer are distinct sizes with different capacities. If the plate lists multiple ratings tied to cooling or operating conditions, send the complete plate rather than selecting one number. If it is missing or unreadable, send any surviving labels and drawings without guessing.

05Physical size, weight and access affect the transaction

There is no single reliable dimension or weight for every 75 kVA transformer. Construction, voltage class, enclosure, winding material and fluid volume all affect the footprint and handling requirements. Use the manufacturer's listed weight when available, and send overall height, width and depth measurements if the unit must pass through a doorway or restricted route.

A dry-type unit on an office floor presents different access questions from a pad-mount beside a driveway. Tell us about stairs, elevators, door clearances, loading areas and whether the unit remains installed. Photos of the route are useful alongside equipment photos. We do not perform electrical disconnect work; sellers use their own qualified electricians to de-energize and disconnect equipment.

06What makes a 75 kVA transformer useful to another buyer

The 75 kVA size fits a recognizable range of smaller three-phase distribution applications, which makes the configuration important to resale demand. A 480-to-208Y/120 V dry-type unit serves a different need from a utility-voltage pad-mount. We pay attention to readable ratings, winding condition, completeness and whether the voltage arrangement matches another application. A common rating alone does not establish value.

Send a clear nameplate photo, overall photos, location, quantity and condition notes. We review the equipment and may ask about test data, PCB status or site access; if it fits, we send a written offer spelling out price, freight, loading and payment terms. Pickup is scheduled with you, and payment follows those terms. See how the buying process works for details.

Ready to sell 75 kVA transformer equipment? Submit the available information through our offer request form, including whether each unit is operating, disconnected, unused surplus or failed. We serve every region of Virginia and review equipment in neighboring states and nationwide on request.