Transformer rewinding is the process of removing and replacing the electrical windings (coils) inside a transformer. This is a crucial and cost-effective method to extend the life of a transformer that has experienced a failure, reduced efficiency, or needs an upgrade to meet new load requirements. The process begins with a detailed assessment to determine if rewinding is the appropriate solution. The transformer is then carefully disassembled, and the old, damaged windings are removed. New windings, typically made of copper, are then meticulously wound to precise specifications, often with new insulation. . The unit is then reassembled and undergoes rigorous testing to ensure it meets all electrical and safety standards before being returned to service. This process not only saves money compared to buying a new unit but is also a more sustainable solution by reusing the core and other components.