Winding Machine

HV Coils are Sectional type with cross over windings where each section of coil is individually wrapped toroidally with 7 or 10 mil glass tapes. Inter-coil porcelain separators are secured on coil edges during the glass covering so that entire section of a coil obtains highest level mechanical and electrical strength after VPI Impregnation in the Silicone Varnish.
Transformers above 200 KVA Secondary Windings are made of Copper Foils with Nomex Paper Interlayer which are extremely rugged in construction and also capable of withstanding Short Circuit Current Situations as well as Voltage Surges more efficiently comparing to Multiple Strip conductors. This type of winding gives Lower Eddy Losses and Lower “Hottest Spot” Temperature which is better than conventional Multiple Strip Conductors wound coils.