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Used Power Transformers

  • Acme Electric FS21500 Industrial Control

    Acme Electric FS21500 Industrial Control Transformer, 1500VA, 50/60HZ. 1D-40

    • Manufacturer: Acme

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $90 USD
    Duncan, SC
  • Square D 9070TF300D1 Transformer. Loc4D-24

    Square D 9070TF300D1 Transformer. Loc4D-24

    • Manufacturer: Square D

    Square D 9070TF300D1 Transformer. Loc4D-24* We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, PLC's, Sensors, Process Controls and Timers. Palm...

    $262 USD
    Duncan, SC
  • Trusted Seller
    Matra H-9027216K Transformer (OS) 20

    Matra H-9027216K Transformer (OS) 20 KVA 505 X 70 Volt 1 Phase - T1970

    • Manufacturer: Matra

    THIS LISTING IS FOR ONE: (1) MATRA H-9027216K TRANSFORMER 20 KVA, 1 PHASE 430-505 PRIMARY VOLTAGE, 70 SECONDARY VOLTAGE NEMA 1 APPROX DIMS 19 X 21 X 27 WEIGHT 210 LBS STOCK # T1970 USED, MAY HAVE KNOCK OUTS CLEAN...

    $500 USD
    North Hampton, NH
  • Wabash 5079 X13550242-02-0 Transformer Unit.

    Wabash 5079 X13550242-02-0 Transformer Unit. 4A-43.1

    • Manufacturer: Wabash

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $59 USD
    Duncan, SC
  • Trane X13590079-01 P/I 0691 Transformer.

    Trane X13590079-01 P/I 0691 Transformer. 4E-33

    • Manufacturer: Trane

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $23 USD
    Duncan, SC
  • URAKAWA 091-7071-37 Transformer, Magnet Coil-91018.

    URAKAWA 091-7071-37 Transformer, Magnet Coil-91018. 5E-8

    • Manufacturer: URAKAWA

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $36 USD
    Duncan, SC
  • URAKAWA 055-6929-31 Transformer, Magnet Coil

    URAKAWA 055-6929-31 Transformer, Magnet Coil - 35999. 5E-8

    • Manufacturer: URAKAWA

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $32 USD
    Duncan, SC
  • ALLEN BRADLEY S91854 Rev 02

    ALLEN BRADLEY S91854 Rev 02 Drive Control Transformer. 4C-42

    • Manufacturer: Allen-Bradley

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $350 USD
    Duncan, SC
  • Trusted Seller
    Technipower Technipower Variable Transformer

    Technipower Technipower Variable Transformer

    • Manufacturer: Technipower

    Technipower Variable Transformer Variac. Single / Three Phase. 208 3P input. Output is up to 150V / 20A per phase, or 50A when set to single phase mode.

    Cary, NC
  • ACME TB81211F3 Industrial Control Transformer.

    ACME TB81211F3 Industrial Control Transformer. Loc4E-20

    • Manufacturer: Acme

    ACME TB81211F3 Industrial Control Transformer. Loc4E20 Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. ...

    $53 USD
    Duncan, SC
  • Trusted Seller
    Hammond Transformer PT50MSG

    Hammond Transformer PT50MSG

    • Manufacturer: Hammond

    “Good; shows signs of wear” Industrial Control Transformer; CAT. NO. PT50MSG Type 3AH

    $50 USD
    Latham, MO
  • Hammond PH250MQMJ Transformer, 250VA 50/60Hz.

    Hammond PH250MQMJ Transformer, 250VA 50/60Hz. 4B-33

    • Manufacturer: Hammond

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $43 USD
    Duncan, SC
  • Krom Schroder TGI-5-15/100R Ignition Transformer

    Krom Schroder TGI-5-15/100R Ignition Transformer Loc5C20

    • Manufacturer: Schroeder

    Krom Schroder TGI-5-15/100R Ignition Transformer Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of o...

    $122 USD
    Duncan, SC
  • GE 9T58E0163 CORE & COIL

    GE 9T58E0163 CORE & COIL TRANSFORMER. Loc4F37

    • Manufacturer: GE

    GE 9T58E0163 CORE & COIL TRANSFORMER. Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equi...

    $351 USD
    Duncan, SC
  • Trusted Seller
    Auction
    (JBP) (New & Used) (3)

    (JBP) (New & Used) (3) Transformers; GE, Eaton, GS Power Supply

    • Manufacturer: Eaton

    (JBP) (New & Used) (3) Transformers; GE, Eaton, GS Power Supply

    Halls, TN
    Visit Auction Website
4647484950

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.