SHORT CIRCUIT CAPABILITY

                         In Order to reverent deformation under short-circuit forces, solid insulator end blocks and rings are used. Windings are compressed under top and bottom clamping members with the help of tie rods. The axial end thrust under fault condition is minimized by the suitable balance to the ampere-turns over the length of windings. In case of bigger transformers, the HV taping leads are taken out from two positions to balance the short circuit forces in a much better way. At tesla each and every component used in transformer undergoes a series of stringent checks and controls at each stage of manufacturing and it is ensured that strict technical & qualitative specifications are adhered to. Utmost care is taken while manufacturing and assembling every component of a transformer. The main process line of a transformer is:


CORE:
                  The core is constructed from lamination of imported cold rolled , grain oriented , low loss electrical steel . The cores are assembled in jigs prior to tapping and clamping in a manner that reduces vibration and inherent varnish, which is both oil and heat resistant and complete core, is connected to the clamps to ensure that it is effectively earthen.The core legs are surely bound with heavy duty insulating tape and the yokes are firmly clamped between folded steel channels. Tops & bottoms clamps are secured to each other by means of tie rods, which serve the dual purpose of securing the windings in the place and of transferring the load form the bottom to the top, clamps when the core and windings are lifted. This prevents any tensile stress being setup in the core legs, which could adversely affect the iron losses.

WINDING:
                  Transformers windings, or Coils are designed to meet three fundamental requirements, mechanical;, Thermal & electrical;. . They are cylindrical in shape and are wound concentrically. Both H.V.& L.V. windings are wounds with adequate brazing and securing tapes in order to achieve a strong and self-supporting structure. Inter layer ducts are provided to ensure low temperature gradient between windings and oils and thus any hot spot temperature is kept to minimum. This insures that the rate of insulation deterioration is minimized and high life expectancy is achieved.

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