Transformer Winding Assembly

THE WINDINGS ARE ASSEMBLED ON THE CORE, AND RADIALLY SUPPORTED BY PRE-COMPRESSED PRESS BOARD SPACERS TO WITHSTAND RADIAL FORCES GENERATED UNDER SHORT-CIRCUIT CONDITIONS. CLAMPING THE WINDINGS IN POSITION COUNTERS OUT OF BALANCE AXIAL FORCES AND ENSURES THAT THE WINDINGS ARE HELP IN POSITION FOR THE LIFE OF THE TRANSFORMER. SPECIAL EXTRA-FLEXIBLE, INSULATED COPPER CABLES, RIGIDLY BRACED IN POSITION, CONNECT THE ENDS AND TAPPING LEADS OF THE WINDINGS. THE CORE AND COIL ASSEMBLY ARE DRIED IN A VAPOUR PHASE DRYING PLANT FROM MICAFIL. THE COILS ARE HYDRAULICALLY PRESSED AND LOCKED WITH PRESSURE BLOCKS TO PROVIDE MECHANICAL RIGIDITY. THE CORE-COIL ASSEMBLY IS LOCATED AND LOCKED IN THE TANK TO PREVENT MOVEMENT OF THE ACTIVE PART IN TRANSIT. THE TANK IS FILLED WITH OIL UNDER VACUUM CONDITIONS TO ATTAIN A MOISTURE CONTENT OF LESS THAN 5 PPM, AND VERY LOW GAS CONTENT.