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Used transformator transformator in USA

  • POWER TRANSFORMERS,PL2030,TRANSFORMER LOT OF 2

    POWER TRANSFORMERS,PL2030,TRANSFORMER LOT OF 2 PRE-OWNED

    • Manufacturer: POWER TRANSFORMERS

    POWER TRANSFORMERS,PL2030,TRANSFORMER LOT OF 2 PRE-OWNED 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...

    $50 USD
    Galion, OH
  • Control Transformer,Class 2 218739,Transformer 115V

    Control Transformer,Class 2 218739,Transformer 115V 50-60Cy 10VA

    • Manufacturer: Control Transformer

    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...

    $20 USD
    Galion, OH
  • TRANS TECH,CPT360224006,CONTROL POWER TRANSFORMER 2KVA

    TRANS TECH,CPT360224006,CONTROL POWER TRANSFORMER 2KVA 120/240V

    • Manufacturer: Trans Tech

    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 ...

    $450 USD
    Galion, OH
  • MILWAUKEE TRANSFORMER,X-148025,TRANSFORMER 175VA 230/460-115V

    MILWAUKEE TRANSFORMER,X-148025,TRANSFORMER 175VA 230/460-115V

    • Manufacturer: Milwaukee

    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 ...

    $50 USD
    Galion, OH
  • DONGAN,33-025,TRANSFORMER NOS

    DONGAN,33-025,TRANSFORMER NOS

    • Manufacturer: Dongan

    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 ...

    $45 USD
    Galion, OH
  • Dongan,36-05-N,Transformer .050 KVA 60 HZ

    Dongan,36-05-N,Transformer .050 KVA 60 HZ

    • Manufacturer: Dongan

    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
  • Transformers Inc,050025,Transformer 2 KVA

    Transformers Inc,050025,Transformer 2 KVA

    • Manufacturer: Transformers inc

    Used in good condition. Part was pulled from operation upon factory shutdown and has been in storage since. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multi...

    $96 USD
    Galion, OH
  • SIGNAL TRANSFORMER,DP-241-7-10,TRANSFORMER

    SIGNAL TRANSFORMER,DP-241-7-10,TRANSFORMER

    • Manufacturer: SIGNAL TRANSFORMER

    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 ...

    $10 USD
    Galion, OH
  • Signal Transformer,241-7-16,Transformer Enclosure

    Signal Transformer,241-7-16,Transformer Enclosure

    • Manufacturer: Signal Transformer

    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...

    $130 USD
    Galion, OH
  • Transformer Engineering Corp,400-5 Ratio 600V

    Transformer Engineering Corp,400-5 Ratio 600V 50 VA 60 Cycles

    • Manufacturer: Transformer Engineering Corp

    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
  • Dongan,35-M015,120/240V .15KVA Transformer

    Dongan,35-M015,120/240V .15KVA Transformer

    • Manufacturer: Dongan

    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 ...

    $24 USD
    Galion, OH
  • 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
  • ADL-250 | Dongan Transformers Transformer

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

    • Manufacturer: Dongan

    $529 USD
    Baroda, MI
  • Dongan Transformers ADL-250 Transformer Lighting

    Dongan Transformers ADL-250 Transformer Lighting Disconnect Enclosure 1-Phase

    • 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-AA7-93377-JL-ZN

    $810 USD
    Baroda, MI
  • Dongan Transformers ADL-230 Transformer Lighting

    Dongan Transformers ADL-230 Transformer Lighting Disconnect Enclosure 1-Phase

    • Manufacturer: Dongan

    “Used item as seen in the images. No additional items are included in the sale. 30-day warranty included.” Dongan Transformers ADL-230 Transformer Lighting Disconnect Enclosure 1-Phase 4-Z7-93379-JL-ZN

    $810 USD
    Baroda, MI
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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.