Energy » Transformers » Power Transformers

Search By Manufacturer

Search By Country

Building Filters

1705

Used Power Transformers

  • Dongan Transformers ADL-250 Transformer Lighting

    Dongan Transformers ADL-250 Transformer Lighting Disconnect 1-Ph NO TRANSFORMER

    • Manufacturer: Dongan

    “Used item as seen in the images. No additional items are included in the sale. 30-day warranty included.” Dongan Transformers ADL-250 Transformer Lighting Disconnect 1-Ph NO TRANSFORMER 4-AA7-93371-JL-ZN

    $540 USD
    Baroda, MI
  • Allen Bradley,1497-N11,Control Circuit Transformer NOS

    Allen Bradley,1497-N11,Control Circuit Transformer NOS

    • Manufacturer: Allen-Bradley

    New, box is extremely dirty from storage. 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...

    $76 USD
    Galion, OH
  • Harnischfeger,75Z542D1,.300KVA Transformer

    Harnischfeger,75Z542D1,.300KVA Transformer

    • Manufacturer: Harnischfeger

    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 ...

    $36 USD
    Galion, OH
  • GE,9T58K1803,Core & Coil Transformer

    GE,9T58K1803,Core & Coil 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 ...

    $200 USD
    Galion, OH
  • Teknik,ENL20052/V4 555 698,24V Transformer

    Teknik,ENL20052/V4 555 698,24V Transformer

    • Manufacturer: Teknik

    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 ...

    $85 USD
    Galion, OH
  • NUNOME ELECTRIC,L32929,TRANSFORMER 100VA NOS

    NUNOME ELECTRIC,L32929,TRANSFORMER 100VA NOS

    • Manufacturer: NUNOME 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 ...

    $60 USD
    Galion, OH
  • PowerStat,Type 126U-3,Variable Auto Transformer

    PowerStat,Type 126U-3,Variable Auto Transformer

    • Manufacturer: Powerstat

    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...

    $850 USD
    Galion, OH
  • GE,9T58B1805,Specialty Transformer Type-IP

    GE,9T58B1805,Specialty Transformer Type-IP

    • 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 ...

    $560 USD
    Galion, OH
  • P&H Harnischfeger,75Q323D1,Transformer Factory Sealed

    P&H Harnischfeger,75Q323D1,Transformer Factory Sealed

    • Manufacturer: P & H

    New in original box. Box is dirty from storage. 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 revie...

    $96 USD
    Galion, OH
  • Kasuga,DVS600UTE1500,Transformer 600VA 155/F

    Kasuga,DVS600UTE1500,Transformer 600VA 155/F

    • Manufacturer: Kasuga

    New unused 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 pictu...

    $80 USD
    Galion, OH
  • RITTAL,234402,TRANSFORMER 3.73A 115V 50/60 HZ

    RITTAL,234402,TRANSFORMER 3.73A 115V 50/60 HZ

    • Manufacturer: Rittal

    Used 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 make s...

    $64 USD
    Galion, OH
  • P&H,75Q331D1,240/480V Control Transformer

    P&H,75Q331D1,240/480V Control Transformer

    • Manufacturer: P & H

    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 ...

    $52 USD
    Galion, OH
  • Dongan,IC-1000-107,Transformer kVA 1 50/60 HZ

    Dongan,IC-1000-107,Transformer kVA 1 50/60 HZ

    • Manufacturer: Dongan

    Used. Part was pulled from operation upon factory shutdown. Please see pictures for details and condition. Please check out our eBay store to view additional listings. We hope to deal with you very soon! Room 3 S...

    $52 USD
    Galion, OH
  • Dayton,4VZE2G,Transformer Lot Of 3 NOS

    Dayton,4VZE2G,Transformer Lot Of 3 NOS

    • Manufacturer: Dayton

    New, boxes are dirty from storage. Lot of 3. 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 rev...

    $32 USD
    Galion, OH
  • RIB,TR20VA007,TRANSFORMER LOT OF 2 NEW

    RIB,TR20VA007,TRANSFORMER LOT OF 2 NEW

    • Manufacturer: RIB

    New in original boxes, dirty from storage. Lot of 2. 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. Pl...

    $20 USD
    Galion, OH
1819202122

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.