Hermetically Sealed Transformers - Volta Transformers

Hermetically Sealed Transformers, also known as Corrugated Transformers, function similarly to conventional transformers but differ in construction. The primary tank is built with corrugated fins and MS steel, providing an extended cooling surface to prevent overheating during operation. The integration of these corrugated fins increases the surface area, aiding in heat dissipation. Once welded, these fins become an integral part of the transformer’s tank structure, ensuring mechanical strength and durability.

Highly skilled and experienced welders manufacture these transformers, ensuring a completely leakage-free tank. The reliability of the tank design is verified through rigorous overpressure tests, guaranteeing structural integrity.

Unlike conventional transformers, Hermetically Sealed Transformers do not have conservators or silica gel breathers. Instead, the dielectric insulating fluid or oil is entirely sealed within the transformer tank, preventing contact with atmospheric air. This design prevents oxidation and sludge formation, significantly enhancing the longevity of the insulation oil. Since the insulating oil remains isolated, degradation is minimized, making these transformers virtually maintenance-free.