Transformer Winding Wire for Oil Immersed Transformer is used to form high-voltage and low-voltage coils inside oil-filled distribution and power transformers. It may include enameled copper wire, enameled aluminum wire, paper-wrapped flat copper wire, or special insulated winding conductors depending on transformer design. Transformer Winding Wire for Oil Immersed Transformer must work reliably with transformer oil, withstand winding tension, resist short-circuit forces, and maintain insulation performance during long-term thermal cycling.