New Surplus Hyundai 80/106.4/132.8 MVA Generator Step-Up Transformer, 72 kV / 13.8 kV

New surplus Hyundai Heavy Industries generator step-up transformer, 80/106.4/132.8 MVA ONAN/ONAF/ONAF, 72 kV grounded-wye to 13.8 kV delta, YNd1, with a 21-position HV on-load tap changer. Manufactured December 2015 to CSA/IEEE standards. Never placed in service. Stored in Alberta, Canada, and available for inspection by appointment.

The unit was oil-filled and nitrogen-blanketed under a December 2024 preservation program, with independent diagnostic testing at that time. Copper windings, full-vacuum tank, conservator and radiators, and a complete set of loose accessories stored in crates.

Highlights

• 80 / 106.4 / 132.8 MVA, ONAN / ONAF / ONAF, 65 °C rise
• 72,000 V GrdY (H0 brought out) to 13,800 V delta, YNd1, 60 Hz
• HV on-load tap changer, 21 positions, 72 kV ±10% (720 V steps)
• 13.947% impedance at 132.8 MVA, nominal tap (about 8.40% on the 80 MVA base)
• Copper windings, inhibited mineral oil, PCB-free at manufacture
• Manufactured December 2015, never placed in service (seller records)
• December 2024 preservation: dew point, vacuum leak test, new oil fill, nitrogen blanket
• Online DGA monitor (GE Hydran M2), surge arresters, and spare bushings included

Specifications

Electrical

Insulation and impedance

Cooling, fluid and tank

Weights (nameplate, approximate)

Current transformers (thermal rating factor 1.33)

* CT 4-9 accuracy class to be confirmed against the nameplate drawing.

Scope of supply

Main tank with core and coil assembly and on-load tap changer, plus these components stored loose and crated (final itemized list attached to the quotation):

• Radiators with header piping and interlocks; cooling fans with supports
• Main and OLTC conservators with breather piping and dehydrating breathers
• HV, HV-neutral and LV bushings with terminals; bushing tap adapters; extra crate of manufacturer-supplied bushings
• HV surge arresters with supports; HV-neutral bus bars; post insulators
• OLTC motor drive with drive shaft; OLTC protective relay and pressure-relief piping
• Buchholz relay; pressure-relief device; online DGA monitor (GE Hydran M2)
• Interconnecting piping, cable, ladder, anchor bolts, hardware, gaskets, touch-up paint

Not included unless quoted: oil for shipment, foundations, interconnecting bus/cable, protection and control panels.

Condition and storage

• Service history: Built December 2015, never placed in service. Seller reports it has never been energized. CTG has not independently verified service history beyond the documents in the data package.
• Storage: Main tank outdoors on matting with temporary containment in Alberta, Canada. Accessories stored separately, indoor and outdoor.
• December 2024 preservation: Dew point check (-64.4 °C under nitrogen, about 0.65% insulation moisture), vacuum leak test passed, vacuum-filled with new inhibited Type II oil, nitrogen blanket, OLTC compartment filled.
• December 2024 tests (independent firm): Turns ratio within 0.14% of calculated at nominal tap; 5 kV insulation resistance and core/clamp ground acceptable; SFRA baseline recorded. Oil after fill: moisture < 4 ppm, dielectric breakdown 39 kV (D1816, 1 mm), dissipation factor 0.001% at 25 °C, IFT 47 mN/m, acid < 0.01 mg KOH/g, PCB not detected.
• Not performed in 2024: Winding resistance, power factor/capacitance, excitation current, bushing tests, DGA, and functional tests of auxiliaries, cooling, controls and OLTC.
• Before energizing: Plan a full installation, oil processing and commissioning program per the manufacturer's instruction book. CTG can quote these services.

Commercial terms

• Offered by CTG Power Systems Intnl., LLC, sole-source and principal-to-principal, directly to the end-user project owner. No tenders, brokers or intermediaries.
• Price on application, in U.S. dollars, by wire or confirmed irrevocable letter of credit. Credit cards not accepted.
• EXW point of storage, Alberta, Canada (Incoterms 2020). Sold as is, where is. Manufacturer's warranty has expired.
• Country of origin: Republic of Korea. Import duties and tariffs at destination are for the buyer's account.
• Optional services quoted separately: oil drain and nitrogen/dry-air fill for transport, rigging and heavy haul, customs brokerage, site assembly, oil processing, testing, OLTC inspection and commissioning.
• Subject to prior sale, seller confirmation, counterparty screening, and CTG's General Terms and Conditions of Sale.

Data package and inspection

The outline drawing, nameplate drawing, 2024 preservation and test report, and itemized scope are available to qualified buyers under NDA. To request the data package, an inspection, or a formal quotation, email Sales@CTGPowerSystems.com or call (813) 920-3500 and reference Item STT-06-0034.

Sales / Spec Sheet (PDF): Download Offering Rev. 1 (CTG-OFR-2026-WEB-STT-06-0034-02)

Specifications are from the manufacturer's nameplate and storage and test records supplied to CTG. They are believed accurate but not warranted, and are superseded by the manufacturer's drawings and the formal quotation. Weights are approximate and must be verified before transport planning. This listing is an invitation to inquire, not an offer.

CTG Power Systems Intnl., LLC
401 East Jackson St., Ste. 2340-F12
Tampa, Florida 33602 USA
Corp. Tel.: (813) 920-3500
Direct: (813) 535-7771
WhatsApp: (813) 918-0762
Fax: (941) 220-6612
Email: Sales@CTGPowerSystems.com
Website: www.CTGPowerSystems.com