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Used Emerson Power Transformers

  • Emerson,HS1F500B,General Purpose Transformer

    Emerson,HS1F500B,General Purpose Transformer

    • Manufacturer: Emerson

    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 ...

    $84 USD
    Galion, OH
  • EMERSON SOLA,E300,CONTROL TRANSFORMER .300KVA NEW

    EMERSON SOLA,E300,CONTROL TRANSFORMER .300KVA NEW

    • Manufacturer: Emerson

    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
  • EMERSON,E300,CONTROL TRANSFORMER .300KVA 240X480-120V NOS

    EMERSON,E300,CONTROL TRANSFORMER .300KVA 240X480-120V NOS

    • Manufacturer: Emerson

    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 ...

    $95 USD
    Galion, OH
  • EMERSON,E300,HEVI-DUTY CONTROL TRANSFORMER .300KVA 240X480-120V

    EMERSON,E300,HEVI-DUTY CONTROL TRANSFORMER .300KVA 240X480-120V NOS

    • Manufacturer: Emerson

    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 ...

    $95 USD
    Galion, OH
  • EMERSON,E250WA,CONTROL TRANSFORMER .250KVA PRI 240/480V

    EMERSON,E250WA,CONTROL TRANSFORMER .250KVA PRI 240/480V SEC 120V NOS

    • Manufacturer: Emerson

    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 ...

    $95 USD
    Galion, OH
  • Emerson,DT651H51S 51KVA,Transformer HV 460V Low

    Emerson,DT651H51S 51KVA,Transformer HV 460V Low 460Y/266 3PH

    • Manufacturer: Emerson

    New Unused will arrange shipping with buyer Skidded 376Lbs Measuring 30"x32"x33" Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the ...

    $1,200 USD
    Galion, OH
  • Trusted Seller
    EMERSON E060 TRANSFORMER ($50 OBO)

    EMERSON E060 TRANSFORMER ($50 OBO)

    • Manufacturer: Emerson

    “USED, EXCELLENT” EMERSON E060 TRANSFORMER 120 V 240X480 V H3 TYPE ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery in...

    $50 USD
    Waukesha, WI
  • Trusted Seller
    Emerson A50C Dry Type Transformer

    Emerson A50C Dry Type Transformer 50 KVA 480V 3PH 208/120V 150°C Open Core

    • Manufacturer: Emerson

    In Good Used Condition. Removed From a Working Environment. 50 KVA. 480V 3PH Primary. 208/120V Secondary. 24" Width. 20 Terminal height. 470 Lbs Weight. If this item ships as Flat Rate Freight please see details...

    $960 USD
    Millersburg, IN
  • Emerson HZ125000R Hevi-Duty Wall Mount

    Emerson HZ125000R Hevi-Duty Wall Mount Transformer

    • Manufacturer: Emerson

    “Used item as seen in the images. No additional items are included in the sale.” Emerson HZ125000R Hevi-Duty Wall Mount Transformer 0-B247A-86942-SS-ZF This item is listed for free local pickup. We will ship fre...

    $864 USD
    Baroda, MI
  • HZ125000R | Emerson Hevi-Duty Wall

    HZ125000R | Emerson Hevi-Duty Wall Mount Transformer - Used

    • Manufacturer: Emerson

    $847 USD
    Baroda, MI
  • Trusted Seller
    ASCO Synchropower Power Control System

    ASCO Synchropower Power Control System Generator Control Emerson Network Power (TK4393-3)

    • Manufacturer: Emerson
    • Model: ASCO

    ASCO Emerson MPN: USED Synchropower Power Control System Generator Control Panel Approximate Dimensions : 11" x 7.5" x 4" 30 day warranty on all purchases. Your purchase will include what is pictured and describ...

    $78 USD
    Chattanooga, TN
  • EGS Hevi-Duty HS5F3AS-12 Transformer PRI

    EGS Hevi-Duty HS5F3AS-12 Transformer PRI 240 x 480 SEC 120/240, 3 KVA. 4F

    • Manufacturer: Emerson

    EGS Hevi-Duty HS5F3AS-12 Transformer PRI 240 x 480 SEC 120/240, 3 KVA. OEM spares from a brewery/ bottling plant maintenance room's canceled expansion project tool crib. We repair all types of industrial automati...

    $349 USD
    Duncan, SC

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.