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Used Hammond Power Transformers in Texas, USA

  • HAMMOND POWER SENTINEL H TRANSFORMER

    HAMMOND POWER SENTINEL H TRANSFORMER (QTY4)

    • Manufacturer: Hammond

    Hammond Power Sentinel H Transformer – 120/240V – Phase 1 – 25KVA – 60 Hertz – 4 Units Available – Call For Pricing

    Katy, TX
  • Hammond,D175JCUB1D,Transformer 175KVA HV-460V LV-230V 3PH

    Hammond,D175JCUB1D,Transformer 175KVA HV-460V LV-230V 3PH

    • Manufacturer: Hammond

    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 ...

    $1,400 USD
    Galion, OH
  • Hammond,K500QJAB1D,Transformer 500KVA HV-2300V LV-460V 3PH

    Hammond,K500QJAB1D,Transformer 500KVA HV-2300V LV-460V 3PH

    • Manufacturer: Hammond

    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 ...

    $6,000 USD

    Get financing

    Est. $118/mo

    Galion, OH
  • Hammond,DO75JCUB1T,75 KVA Transformer HV 460V-

    Hammond,DO75JCUB1T,75 KVA Transformer HV 460V- LV 230Y/133V 3PH

    • Manufacturer: Hammond

    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 ...

    $1,600 USD
    Galion, OH
  • Hammond,D175JCUB1TH,Transformer 175KVA HV 460V-LV 230Y/133V,3PH

    Hammond,D175JCUB1TH,Transformer 175KVA HV 460V-LV 230Y/133V,3PH

    • Manufacturer: Hammond

    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 ...

    $3,250 USD
    Galion, OH
  • HAMMOND,D011JCUB,DRY TYPE TRANSFORMER 3PH 11KVA

    HAMMOND,D011JCUB,DRY TYPE TRANSFORMER 3PH 11KVA HV 460V LV 230Y/133V

    • Manufacturer: Hammond

    WILL ARRANGE SHIPPING WITH BUYER WEIGHT 220LBS MEASURING 24"X24"X25" 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 ph...

    $600 USD
    Galion, OH
  • Hammond Power 2500 kVA 13800V

    Hammond Power 2500 kVA 13800V Dry Type Transformer 🟦

    • Manufacturer: Hammond

    Hammond Power 2500 kVA 13800V Dry Type Transformer🟦 ***30-day Warranty- Guaranteed to work or your money back.*** ***This item may exhibit signs of prior use, such as scratches, scuffs, or dents, these cosmetic i...

    $31,292 USD

    Get financing

    Est. $589/mo

    Arlington, TX

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.