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Used Siemens Power Transformers in Texas, USA

  • Siemens 15kVA 480V 60Hz Transformer

    Siemens 15kVA 480V 60Hz Transformer 240/120 1D1NO15 🟦

    • Manufacturer: Siemens

    Siemens 15kVA 480V 60Hz Transformer 240/120 1D1NO15 ***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...

    $1,117 USD
    Arlington, TX
  • Siemens 225kVA 480V 208Y/120 Dry

    Siemens 225kVA 480V 208Y/120 Dry Type Transformer 3Ph 60Hz 3F3Y225 🟦

    • Manufacturer: Siemens
    • Model: 3F3Y225

    Siemens 225kVA 480V Dry Type Transformer 3Ph 60Hz 3F3Y225 Stepdown: 208Y/120V ***30-day Warranty- Guaranteed to work or your money back.*** ***This item may exhibit signs of prior use, such as scratches, scuffs, ...

    $4,362 USD
    Arlington, TX
  • Siemens 45kVA 480V 3R Transformer

    Siemens 45kVA 480V 3R Transformer 3PH 60HZ Cat No. 3F3Y045D16 🟦

    • Manufacturer: Siemens

    Siemens 45kVA 480V 3R Transformer 3PH 60HZ Cat No. 3F3Y045D16 L.V. 208Y/120V ***30-day Warranty- Guaranteed to work or your money back.*** ***This item may exhibit signs of prior use, such as scratches, scuffs, o...

    $1,628 USD
    Arlington, TX
  • Siemens 1D1Y167 Dry Type Transformer

    Siemens 1D1Y167 Dry Type Transformer 167 kVA 1Ph 480x240V Pri 240/120V Sec

    • Manufacturer: Siemens

    Home Contact About Technology Industrial Lab & Test Electrical Semiconductor Siemens 1D1Y167 Dry Type Transformer 167 kVA 1Ph 480x240V Pri 240/120V Sec Manufacturer: Siemens Model: 1D1Y167 Condition: Used We get ...

    Leander, TX
  • Siemens 3F3Y075K13BLN3TP1 75-KVA 3-Ph Transformer

    Siemens 3F3Y075K13BLN3TP1 75-KVA 3-Ph Transformer Al HV:480D LV:208Y/120 AA

    • Manufacturer: Siemens

    Home Contact About Technology Industrial Lab & Test Electrical Semiconductor Siemens 3F3Y075K13BLN3TP1 75-KVA 3-Ph Transformer Al HV:480D LV:208Y/120 AA Manufacturer: Siemens Model: 3F3Y075K13BLN3TP1 Condition: U...

    $2,000 USD
    Leander, 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.