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Used ABB Power Transformers in Wisconsin, USA

  • Trusted Seller
    ABB CCT50-480/120 TRANSFORMER ($60 OBO)

    ABB CCT50-480/120 TRANSFORMER ($60 OBO)

    • Manufacturer: ABB

    “USED, EXCELLENT” ABB CCT50-480/120 TRANSFORMER 50 VA 460-480/120 VAC 50/60 HERTZ ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide y...

    $60 USD
    Waukesha, WI
  • Trusted Seller
    ABB T4050PSF1 CONTROL TRANSFORMER ($120

    ABB T4050PSF1 CONTROL TRANSFORMER ($120 OBO)

    • Manufacturer: ABB

    ABB T4050PSF1 CONTROL TRANSFORMER 50 VA 240/480 - 115/24 600V 30A ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery ins...

    $120 USD
    Waukesha, WI
  • Trusted Seller
    ABB 3AU-A476001-A8 TRANSFORMER ($14.50 OBO)

    ABB 3AU-A476001-A8 TRANSFORMER ($14.50 OBO)

    • Manufacturer: ABB

    “GOOD, EXCELLENT CONDITION” 3AUA476001A8 ABB TRANSFORMER GROUND FAULT ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery...

    $15 USD
    Waukesha, WI
  • Trusted Seller
    ABB 3AU-A476001-A8 TRANSFORMER ($14.50 OBO)

    ABB 3AU-A476001-A8 TRANSFORMER ($14.50 OBO)

    • Manufacturer: ABB

    “GOOD, EXCELLENT CONDITION” 3AUA476001A8 ABB TRANSFORMER GROUND FAULT ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery...

    $15 USD
    Waukesha, WI
  • Trusted Seller
    1,000 KVA UNUSED ABB SUBSTATION

    1,000 KVA UNUSED ABB SUBSTATION TRANSFORMER 4160HV 480/277LV

    • Manufacturer: ABB

    ABB PC-1002 Three Phase Silicone Fluid Insulated Substation Transformer Serial number AS00623-001 Manufactured 12/2015 1000/1120 KNAN 4160HV 480Y/277 LV 60HZ This is designed for medium voltage application...

    Wisconsin, USA

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.