15000/16800 kVA substation transformer, 33 kV to 13.8Y/7.97 kV
Price on request
15/20/25 MVA substation transformer, 69 kV delta to 24.94GrdY/14.4 kV, with load tap changer
- Year built
- 1993
- In service
- Removed from utility service about two years ago for a capacity upgrade
- Equipment no.
- STT-06-0035
- Manufacturer
- Cooper Power Systems (McGraw-Edison)
Price and quote
Price on request
Price for the equipment. Your quote adds testing and delivery to your site.
- Tested before it ships, and you see the report first
- Delivered to your site, with rigging and freight quoted up front
- Confirmed with the seller before we quote
Specifications
- Rating
- 15/20/25 MVA at 55 °C, 16.8/22.4/28 MVA at 65 °C, OA/FA/FA
- Primary
- 69,000 V delta
- Secondary
- 24,940GrdY/14,400 V
- Full-load current
- 347 A at 15 MVA, 463 A at 20 MVA and 579 A at 25 MVA, at 24.94 kV calculated from its rating
- Phase
- 3-phase, 60 Hz
- Impedance
- 7.1% at 15 MVA
- BIL
- 350 kV HV, 150 kV LV
- Tap changer
- McGraw-Edison load tap changer, ±10% in 33 positions, LTC-4C control; HV de-energized taps ±2 × 2.5%
- Windings
- Copper
- Fluid
- Mineral oil, non-PCB, 3,936 gal
- Cooling
- OA/FA/FA
- Weight
- 95,865 lb (heaviest untanking piece 39,550 lb)
- Accessories
- ABB O+C bushings (LV replaced 2015), multi-ratio bushing CTs, three LV potential transformers, nitrogen preservation system
About this unit
1993 Cooper (McGraw-Edison) unit that its owner took out of utility service about two years ago for a capacity upgrade, sold as is, where is by CTG Power Systems. Oil history and an April 2023 field test report go to qualified buyers; the buyer handles draining, rigging and transport, and the price is on request.
Listed October 18, 2026