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Used test in California, USA

  • SHINDENGEN TRANSFORMER NS24015 POWER SUPPLY

    SHINDENGEN TRANSFORMER NS24015 POWER SUPPLY CNC

    • Manufacturer: Fanuc

    HELLO AND THANK YOU FOR YOUR INTEREST IN THIS PRODUCT. THIS PART IS USED AND WAS REMOVED FROM A CNC MACHINE. WE CANNOT TEST OUR PARTS, HOWEVER OUR RETURN RATE/RATIO IS EXTREMELY LOW. COMPANY

    $270 USD
    Los Angeles, CA
  • 1997 HURCO BMC 4020 HT

    1997 HURCO BMC 4020 HT SUENN LIANG SP-TBSB CONTROL POWER TRANSFORMER

    • Manufacturer: Fanuc

    HELLO AND THANK YOU FOR YOUR INTEREST IN THIS PRODUCT. THIS PART IS USED AND WAS REMOVED FROM A CNC MACHINE. WE CANNOT TEST OUR PARTS, HOWEVER OUR RETURN RATE/RATIO IS EXTREMELY LOW. COMPANY

    $130 USD
    Los Angeles, CA
  • SHINDENGEN TRANSFORMER NS24015 POWER SUPPLY

    SHINDENGEN TRANSFORMER NS24015 POWER SUPPLY

    • Manufacturer: Fanuc

    HELLO AND THANK YOU FOR YOUR INTEREST IN THIS PRODUCT. THIS PART IS USED AND WAS REMOVED FROM A CNC MACHINE. WE CANNOT TEST OUR PARTS, HOWEVER OUR RETURN RATE/RATIO IS EXTREMELY LOW. COMPANY THIS PART CAME FROM A...

    $270 USD
    Los Angeles, CA
  • 50 KVA WESTINGHOUSE DT-3 TRANSFORMER

    50 KVA WESTINGHOUSE DT-3 TRANSFORMER

    • Manufacturer: Westinghouse
    • Model: DT-3

    50 KVA WESTINGHOUSE DT-3 TRANSFORMER 50 KVA VOLTS AMPS 483 58.6 460 61.6 437 64.7 480 63.2 255 8 500 LBS ***TESTED UNDER POWER ***SPECIFICATION SHOWN ARE TO BE USED AS A GUIDELINE ONLY. IT IS THE CUSTOMER RESPONS...

    $750 USD
    Santa Paula, CA
  • OKUMA MX-45VAE SHINDENGEN TRANSFORMER NS24015

    OKUMA MX-45VAE SHINDENGEN TRANSFORMER NS24015 POWER SUPPLY 4 MONTH WARRANTY

    • Manufacturer: Fanuc

    HELLO AND THANK YOU FOR YOUR INTEREST IN THIS PRODUCT. PLEASE KEEP IN MIND THAT THIS PRODUCT IS ADVERTISED FOR A LIMITED TIME ONLY. WHY DO OUR LOYAL AND REPEAT CLIENTS CHOOSE A.M.S. INC? IT IS BECAUSE THEY KNOW E...

    $270 USD
    Los Angeles, CA
  • SHINDENGEN TRANSFORMER NS24015 POWER SUPPLY

    SHINDENGEN TRANSFORMER NS24015 POWER SUPPLY OKUMA MILL

    • Manufacturer: Fanuc

    HELLO AND THANK YOU FOR YOUR INTEREST IN THIS PRODUCT. PLEASE KEEP IN MIND THAT THIS PRODUCT IS ADVERTISED FOR A LIMITED TIME ONLY. WHY DO OUR LOYAL AND REPEAT CLIENTS CHOOSE A.M.S. INC? IT IS BECAUSE THEY KNOW E...

    $270 USD
    Los Angeles, CA
  • Agilent 9100-4781 Toroid Power Transformer

    Agilent 9100-4781 Toroid Power Transformer Assembly

    • Manufacturer: Agilent - Keysight

    Agilent 9100-4781 Toroid Power Transformer Assembly Condition : Used

    $150 USD
    San Jose, CA

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.