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Used Power Transformers

  • Sterling,BT-111-08-2T,Transformer

    Sterling,BT-111-08-2T,Transformer

    • Manufacturer: Sterling

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $12 USD
    Galion, OH
  • ACME,TA-1-81211,TRANSFORMER 100VA

    ACME,TA-1-81211,TRANSFORMER 100VA

    • Manufacturer: Acme

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $40 USD
    Galion, OH
  • Westinghouse,6E4690 Type EPB,Transformer

    Westinghouse,6E4690 Type EPB,Transformer

    • Manufacturer: Westinghouse

    Used and in good condition. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the pictures may differ. Please review the pictures to ma...

    $150 USD
    Galion, OH
  • Acme,T113073,Transformer 120/240VAC

    Acme,T113073,Transformer 120/240VAC

    • Manufacturer: Acme

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $80 USD
    Galion, OH
  • JEFFERSON ELECTRIC,636-1511,MACHINE TOOL TRANSFORMER

    JEFFERSON ELECTRIC,636-1511,MACHINE TOOL TRANSFORMER

    • Manufacturer: JEFFERSON ELECTRIC

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $70 USD
    Galion, OH
  • HAMMOND,143843,INDUSTRIAL CONTROL TRANSFORMER 250VA

    HAMMOND,143843,INDUSTRIAL CONTROL TRANSFORMER 250VA

    • Manufacturer: Hammond

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $100 USD
    Galion, OH
  • Acme,TA-2-81201,Industrial Control Transformer

    Acme,TA-2-81201,Industrial Control Transformer

    • Manufacturer: Acme

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $60 USD
    Galion, OH
  • FUKUDA,FE21-500,TRANSFORMER 500VA

    FUKUDA,FE21-500,TRANSFORMER 500VA

    • Manufacturer: FUKUDA

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $60 USD
    Galion, OH
  • Nunome Electric,L53989,55VA Transformer

    Nunome Electric,L53989,55VA Transformer

    • Manufacturer: Nunome

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $32 USD
    Galion, OH
  • GE,9T56Y1808,Transformer

    GE,9T56Y1808,Transformer

    • Manufacturer: GE

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $28 USD
    Galion, OH
  • DONGAN,53-05,TRANSFORMER 50 VA NOS

    DONGAN,53-05,TRANSFORMER 50 VA NOS

    • Manufacturer: Dongan

    DONGAN,53-05,TRANSFORMER 50 VA NOS What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included ...

    $60 USD
    Galion, OH
  • Trusted Seller
    REX POWER MAGNETICS BC6F-P 6

    REX POWER MAGNETICS BC6F-P 6 KVA 380V/480Y-277V TRANSFORMER

    • Manufacturer: Rex Power Magnetics

    REX POWER MAGNETICS BC6F-P used general purpose transformer available. Ideal for various applications. Reliable brand and efficient performance. Don’t miss out on this versatile unit for your electrical needs.

    $1,350 USD
    Detroit, MI
  • Trusted Seller
    Hammond Power Solutions – P009QKKF

    Hammond Power Solutions – P009QKKF Transformer 600/480V – 480Y/277V, 9kVA

    • Manufacturer: Hammond

    Hammond Power Solutions – P009QKKF Transformer, 600/480V – 480Y/277V, 9kVA, used. Ideal for various general-purpose applications. Reliable and efficient, this unit adheres to industry standards. Secure this depen...

    $675 USD
    Detroit, MI
  • Trusted Seller
    Hammond Power Solutions – C3F009PBS

    Hammond Power Solutions – C3F009PBS Transformer 600V – 208Y/120V, 9kVA

    • Manufacturer: Hammond

    Hammond Power Solutions C3F009PBS transformer 600V to 208Y/120V, 9kVA. General purpose, used condition. Ideal for diverse electrical applications. Cat No. C3F009PBS Pri. Volts: 600V Sec. Volts: 208Y/120V 3PH, 9kV...

    $1,250 USD
    Detroit, MI
  • SQUARE D,15T3H,TRANSFORMER 15KVA TRANSFORMER H.V.

    SQUARE D,15T3H,TRANSFORMER 15KVA TRANSFORMER H.V. 480 L.V. 208Y/120V

    • Manufacturer: Square D
    • Model: 15T3H

    WILL ARRANGE SHIPPING WITH BUYER WEIGHT 210 MEASURING 24X24X28 What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos t...

    $450 USD
    Galion, OH
89101112

Overview

Power transformers transfer electrical energy between voltage levels for utilities, substations, and large industrial plants. These heavy, high-capacity units come in oil-filled or dry-type designs, with cooling classes (ONAN, ONAF, etc.), on-load tap changers, bushings and protection gear. Buyers must match voltage class, impedance, capacity (kVA/MVA), and cooling to system needs, and plan for foundation, handling, transport and commissioning.

FAQ

What specifications should I check when buying a used power transformer?

Confirm voltage ratios, kVA/MVA rating, impedance, cooling type, phase configuration, on-load tap changer condition, bushing types and insulation class, and recent test reports (DGA, insulation resistance, turns ratio).

How do I verify a used transformer's condition before purchase?

Request factory and maintenance records, Dissolved Gas Analysis (DGA), insulation resistance, power factor tests, sweep-frequency response (SFRA) and a visual inspection report for leaks, rust and bushing integrity.

What are the key shipping considerations for heavy power transformers?

Plan for specialized heavy-haul transport, load lifting equipment, route permits, weight/axle limits, skidding or cradling, draining oil if required by regulations, and coordination with local authorities for oversized loads.

What site preparations are needed before delivery and installation?

Prepare a level, rated foundation or skid with proper anchoring, ensure crane access and pad capacity, verify cable entry, grounding, oil containment for liquid-filled units, and arrange for qualified rigging and electrical commissioning crews.

What ongoing maintenance keeps a power transformer reliable?

Perform regular DGA, insulation resistance and oil quality tests, thermographic inspections, tap changer maintenance, bushing checks, cooling system inspections and timely repairs. Follow manufacturer intervals and keep detailed service records.