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Used Power Transformers

  • 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, ...

    $359 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
  • 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
  • Trusted Seller
    Hammond Power Solutions PT150MLI, 1

    Hammond Power Solutions PT150MLI, 1 Ph Transformer

    • Manufacturer: Hammond

    $50 USD
    Suwanee, GA
  • 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
    Dynisco PS 471 Signal Conditioner

    Dynisco PS 471 Signal Conditioner 468612 PS471 Power Supply Transformer PLC (PM2826-11)

    • Manufacturer: Dynisco

    Dynisco MPN: PS 471 USED 30 day warranty on all purchases. Your purchase will include what is pictured and described above ONLY.

    $153 USD
    Chattanooga, TN
  • 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
  • SQUARE D 9070EL2D9 INDUSTRIAL CONTROL

    SQUARE D 9070EL2D9 INDUSTRIAL CONTROL TRANSFORMER. 1-E9

    • Manufacturer: Square D

    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, ...

    $86 USD
    Duncan, SC
  • Cutler-Hammer C0100C2A Control Transformer 50/60

    Cutler-Hammer C0100C2A Control Transformer 50/60 Hz (9.3.3)

    • Manufacturer: Cutler-Hammer

    Cutler-Hammer C0100C2A Control Transformer 50/60 Hz Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of...

    $49 USD
    Duncan, SC
  • Gomi Electric Transformer, # MTR-120,

    Gomi Electric Transformer, # MTR-120, Cap 100 VA, 1 Ph 4E-3

    • Manufacturer: Gomi Electric

    Used industrial automation parts pulled from storage or the working environment. Tested to the best of our ability. Shows signs of normal use. Here at Palmetto Automation Inc. we endeavor to provide otherwise hig...

    $34 USD
    Duncan, SC
  • Numatics 139-308P Transformer, 100-115/50 110-120/60.

    Numatics 139-308P Transformer, 100-115/50 110-120/60. 5D-32

    • Manufacturer: Numatics

    OEM spares from a plant maintenance room's canceled expansion project tool crib. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, PLC's, Sensors, Pr...

    $41 USD
    Duncan, SC
  • Nunome 300 VA 1 Phase

    Nunome 300 VA 1 Phase Industrial Control Transformer, NMTR-111, Used, 4E-3

    • Manufacturer: Nunome

    Used industrial automation parts pulled from storage or the working environment. Tested to the best of our ability. Shows signs of normal use. Here at Palmetto Automation Inc. we endeavor to provide otherwise hig...

    $43 USD
    Duncan, SC
  • Hammond PT75MQMJ-3 Transformer, 75VA 50/60Hz.

    Hammond PT75MQMJ-3 Transformer, 75VA 50/60Hz. 4B-34

    • 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, ...

    $54 USD
    Duncan, SC
  • Heavy Duty E075 EGS Class

    Heavy Duty E075 EGS Class 105 Ind. Control Transformer .075KVA (9.3.3)

    • Manufacturer: Sola/Hevi-Duty

    Heavy Duty E075 EGS Class 105 Ind. Control Transformer .075KVA New Open Box Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial elect...

    $54 USD
    Duncan, SC
  • Allen-Bradley X-183222 Control Circuit Transformer

    Allen-Bradley X-183222 Control Circuit Transformer .130 Kva 50/60 Hz 4C-46

    • Manufacturer: Allen-Bradley

    Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes through basic power bench t...

    $23 USD
    Duncan, SC
3132333435

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.