15/20/25 MVA 69000GrdY/39837 Primary, 34500GrdY/19919 Secondary, Pennsylvania Transformer Technology Transformer, ONAN/ONAF/ONAF, 65 °C Rise, ABB LTC, 350 KV BIL, 2023, Unused

One unused 15/20/25 MVA power transformer with ABB load tap changer and 12.47 kV buried delta tertiary. Built December 2023 by Pennsylvania Transformer Technology in Raeford, NC. Never energized in service (routine factory testing only). Oil retested September 2026. Already built and factory tested, so no new-build lead time. Subject to prior sale.

Specifications
Rating: 15/20/25 MVA ONAN/ONAF/ONAF
Temperature Rise: 65°C
High Voltage: 69,000 GrdY/39,837 V
Low Voltage: 34,500 GrdY/19,919 V
Tertiary: 12,470 V buried delta (stabilizing, not for external load)
Frequency: 60 Hz
Load Tap Changer: ABB Type UZE, HV winding, ±10% in 32 steps (33 positions)
Impedance: 9.03% at 15 MVA (certified factory test)
BIL: HV 350 kV / LV 200 kV / Neutrals and tertiary 110 kV
Windings: Copper
Oil: Inhibited mineral oil, non-PCB, 3,698 US gal total
Oil Preservation: Sealed tank, automatic nitrogen system
Cooling: 4 detachable radiators, 6 fans, two-stage control
Bushing CTs: Multi-ratio 1200:5 C800; 300:5 metering class on HV
Surge Arresters: 3 HV and 3 LV, tank mounted
Oil Test (Sept 2026): 4.5 ppm water, 40.3 kV breakdown, 0.31% PF at 100°C
Shipping Weight: 91,790 lb
Total Weight (oil filled): 102,415 lb
Shipping Dimensions: 192 x 96 x 162.5 in
Made in: USA

Documentation available to qualified buyers
Certified factory test report (IEEE C57.12.00 / C57.12.90), nameplate and outline drawings, September 2026 oil test results.

Terms
Ex works Raeford, North Carolina. Transport, rigging, setting, field testing and commissioning not included unless quoted separately. Pricing on request. CTG sells as principal. Reference Item CTG-PT-25MVA-6934-LTC.