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Used Power Transformers

  • 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
  • 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
  • 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
  • URAKAWA,063-2022-06,TRANSFORMER NEW NO BOX

    URAKAWA,063-2022-06,TRANSFORMER NEW NO BOX

    • Manufacturer: URAKAWA

    New without original box. 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...

    $16 USD
    Galion, OH
  • GE,3T58B54G5,Transformer

    GE,3T58B54G5,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 ...

    $60 USD
    Galion, OH
  • Allen Bradley,800E-2TL5,Transformer Module

    Allen Bradley,800E-2TL5,Transformer Module

    • Manufacturer: Allen-Bradley

    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 ...

    $8 USD
    Galion, OH
  • NUNOME ELECTRIC,L32931,TRANSFORMER 66VA NOS

    NUNOME ELECTRIC,L32931,TRANSFORMER 66VA 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 ...

    $50 USD
    Galion, OH
  • Adjust-A-Volt,T51U,Variable Transformer (G078)

    Adjust-A-Volt,T51U,Variable Transformer (G078)

    • Manufacturer: Standard 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 ...

    $50 USD
    Galion, OH
  • Dormeyer Products,8626-3,Transformer 460V 60HZ

    Dormeyer Products,8626-3,Transformer 460V 60HZ

    • Manufacturer: Dormeyer

    Used 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 pictures ...

    $40 USD
    Galion, OH
  • NUNOME ELECTRIC,L32930,TRANSFORMER 55VA NOS

    NUNOME ELECTRIC,L32930,TRANSFORMER 55VA 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 ...

    $40 USD
    Galion, OH
  • GENERAL ELECTRIC,55-172809G,TRANSFORMER 240/480V

    GENERAL ELECTRIC,55-172809G,TRANSFORMER 240/480V

    • 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 ...

    $15 USD
    Galion, OH
  • TYCO PRODUCTS,4000-01E07AE34,TRANSFORMER

    TYCO PRODUCTS,4000-01E07AE34,TRANSFORMER

    • Manufacturer: TYCO PRODUCTS

    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
  • 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
  • STANCOR,P-6375,CONTROL TRANSFORMER 1-PHASE NOS

    STANCOR,P-6375,CONTROL TRANSFORMER 1-PHASE NOS

    • Manufacturer: Stancor

    STANCOR,P-6375,CONTROL TRANSFORMER 1-PHASE 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 ...

    $45 USD
    Galion, OH
  • Trusted Seller
    Murr Elektronik MDG 15-230/24 Transformer

    Murr Elektronik MDG 15-230/24 Transformer

    • Manufacturer: Murrelektronik

    Came from working units 30 day warranty Csp14A

    $50 USD
    Muskegon, MI
1516171819

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.