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This is a technical specification sheet for a Hyundai Auto Transformer (Model RP-8451). The transformer is a single-phase unit manufactured in 2001 with a serial number 04873T10015-3, designed for 60 Hz operation in compliance with ANSI C57.12.00 standards. The unit features OA/FA/FOA cooling, ASTM D3487 insulating liquid (inhibited oil with no detectable PCB), and copper conductors with a temperature rise of 55°C in both winding and oil.

The transformer has three winding configurations: H.V rated at 170/226.67/283.33 MVA with 525/3 kV and 561/748/935 A capacity; X.V rated at 170/226.67/283.33 MVA with 230/3 kV and 1280/1707/2134 A capacity; and Y.V rated at 28/35/46.7 MVA with 34.5 kV and 812/1014/1354 A capacity. B.I.L ratings are 1425/150 kV, 750 kV, and 200 kV respectively. Impedance values at 75°C range from 7.32% to 18.37% based on respective MVA ratings. The total weight is approximately 505,400 lbs, with major components including 262,600 lbs for untanking, 126,900 lbs for tank and fittings, 129,100 lbs for insulating oil, 341,580 lbs for transportation, and associated equipment. The tank is designed for 100 kPa vacuum filling, and the vector group employs grounded wye for H.V and L.V windings with delta for T.V winding configuration.