Transformer rewinding is a specialized and cost-effective process for extending the life of a transformer by replacing its damaged internal windings. The need for rewinding often arises from insulation degradation due to overheating, electrical stress, or mechanical damage from external short circuits. The process, performed by expert technicians, involves carefully dismantling the transformer, removing the old, damaged coils, and then meticulously winding new, high-quality copper wire to the precise specifications of the original design. After re-insulating and reassembling the unit, a series of rigorous tests, including insulation resistance and load tests, are conducted to ensure the refurbished transformer operates safely and efficiently. Companies like Saini Transformer and Jai Ambey Electricals in the Gurugram area specialize in this service, offering a sustainable and economical alternative to replacing the entire unit.