Transformer Rewinding is the process of replacing the old, damaged, or degraded coils (windings) inside a transformer with new ones. Over time, the insulation on the windings can break down due to heat and electrical stress, leading to reduced efficiency or outright failure. Rewinding involves carefully disassembling the transformer, removing the old windings, and installing new ones. This is a cost-effective and sustainable alternative to buying a new unit, as it restores the transformer's performance and extends its lifespan.