We have separate winding shop with 8 No. of Winding Machine Facility up to Manufacturing of 100 MVA 220 kV Class Windings with only collapsible former & Electric Bending Machine & Hydraulic Shearing Machine in shop.
Disc winding is used for high voltage winding. For higher voltages the interleaved form of the disc winding has a great advantage to increase series capacitances and consequently to obtain uniform transient overvoltage distribution on the winding.
Helical type windings are used for most low-voltage windings. Each turn consists of a group of conductors which are continuously transposed to reduce eddy losses.
Regulating winding is a helical type of winding and designed in such a way that each tap winding segment is evenly distributed over the entire length of the main windings.
By using such windings, the Ampere turn distribution provides an electromagnetic balance regardless of the selected Lapping position.
Cross Transposed conductors (CTC) its special type of winding which reduce the additional losses. It consists of a number of transposed bunch profile conductor.
Careful after treatment plays a decisive role in order to prepare the windings for the high demand of operation. Therefore they are pressed, dried under constant pressure, oil-impregnated, exactly Measured and if required, readjusted geometrically