Three-phase oil transformer in hermetic design

The US Air Force is seeking a vendor to supply a three-phase oil transformer in hermetic design. The transformer should have a high voltage of 20,000 V, a low voltage of 400/230 V, and meet specific standards and regulations. The package should also include additional accessories such as a transformer protection relay, Euromold plug bushings, transformer connection terminals, and vibration dampers. The intention is to award the contract to the vendor who offers the best value to the government based on the lowest total price that is deemed technically acceptable. Key features of the required transformer include: • High voltage: 20,000 V • Low voltage: 400/230 V • Voltage Tapping: 5 steps ± 2x2.5% • Vector Group: Dyn5 • Frequency: 50 Hz • Cooling Method: 3 • Length: approximately 1,340 mm • Width: approximately 1,045 mm • Height: approximately 1,630 mm • Weight: approximately 2,650 kg • Oil weight: approximately 490 kg