Energy » Transformers » Power Transformers

Search By Manufacturer

Search By Country

Building Filters

1656

Used Power Transformers

  • Stancor,P-8657,Control Transformer 117V

    Stancor,P-8657,Control Transformer 117V

    • Manufacturer: Stancor

    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 ...

    $20 USD
    Galion, OH
  • SQUARE D,30T3H,TRANSFORMER 30KVA TRANSFORMER H.V.

    SQUARE D,30T3H,TRANSFORMER 30KVA TRANSFORMER H.V. 480 L.V. 208Y/120V

    • Manufacturer: Square D

    WILL ARRANGE SHIPPING WITH BUYER WEIGHT 280LBS MEASURING 28X28X30 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 photo...

    $550 USD
    Galion, OH
  • HPS Imperator,PH250MQMJ,Industrial Control Transformer

    HPS Imperator,PH250MQMJ,Industrial Control Transformer

    • Manufacturer: HPS

    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 make sure the part number(s) m...

    $125 USD
    Galion, OH
  • Allen-Bradley,120883-04,Transformer 100VA NOS

    Allen-Bradley,120883-04,Transformer 100VA NOS

    • Manufacturer: Allen-Bradley

    New without original box, NOS. 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...

    $60 USD
    Galion, OH
  • Hevi-Duty,E0603PBTC,Industrial Control Transformer

    Hevi-Duty,E0603PBTC,Industrial Control Transformer

    • Manufacturer: Hevi-Duty

    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 ...

    $16 USD
    Galion, OH
  • Acme Transformer,TA-2-81219,Control Transformer 2kVA hv

    Acme Transformer,TA-2-81219,Control Transformer 2kVA hv 240/480v lv 110-120v

    • Manufacturer: Acme

    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 make sure the part number(s) m...

    $50 USD
    Galion, OH
  • Fanuc,A80L-001-0176-04,Transformer

    Fanuc,A80L-001-0176-04,Transformer

    • Manufacturer: Fanuc

    New unused stock surplus, see pictures for details

    $325 USD
    Galion, OH
  • Square D,SK5271R,Transformer Disconnect Series A

    Square D,SK5271R,Transformer Disconnect Series A

    • Manufacturer: Square D

    New unused no box, NOS 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 make su...

    $180 USD
    Galion, OH
  • SBA,Type DWD Art Nr 204-026,Transformer

    SBA,Type DWD Art Nr 204-026,Transformer

    • Manufacturer: SBA

    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...

    $80 USD
    Galion, OH
  • SIEMENS,MT1500A,CONTROL TRANSFORMER 1.5KVA

    SIEMENS,MT1500A,CONTROL TRANSFORMER 1.5KVA

    • Manufacturer: Siemens

    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
  • RELIANCE,69956-W,TRANSFORMER 50/60 CYCLES NOS

    RELIANCE,69956-W,TRANSFORMER 50/60 CYCLES NOS

    • Manufacturer: Reliance 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 ...

    $100 USD
    Galion, OH
  • Togi,TRH500-21N,Transformer 500VA

    Togi,TRH500-21N,Transformer 500VA

    • Manufacturer: Togi

    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
  • MTE,C1-13383,Transformer 60HZ

    MTE,C1-13383,Transformer 60HZ

    • Manufacturer: MTC

    Refurbished and in very 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 pi...

    $120 USD
    Galion, OH
  • Westinghouse,1F3053,Transformer 115V

    Westinghouse,1F3053,Transformer 115V

    • Manufacturer: Westinghouse

    New Old Stock Surplus, box is dirty and label is missing from box, see pictures for details, Bin 183

    $30 USD
    Galion, OH
  • HPS Imperator,PH350MQMJ,Industrial Control Transformer

    HPS Imperator,PH350MQMJ,Industrial Control Transformer

    • Manufacturer: HPS

    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 make sure the part number(s) m...

    $125 USD
    Galion, OH
910111213

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.