EPOXY RESIN AND HARDENER
Why Epoxy Resin is Used in Transformers?
Transformers generate heat and are exposed to electrical stress, moisture, and contaminants. Epoxy resin provides:
✅ High Dielectric Strength – Prevents electrical leakage and short circuits.
✅ Thermal Stability – Withstands high temperatures without degradation.
✅ Moisture Resistance – Protects against humidity and environmental factors.
✅ Mechanical Strength – Enhances durability and impact resistance.
Types of Epoxy Resin Used in Transformers
- Cast Epoxy Resin
- Used in dry-type transformers for complete encapsulation.
- Offers high thermal and electrical insulation.
- Liquid Epoxy Resin
- Applied as a coating for transformer windings and cores.
- Used in oil-immersed transformers for additional protection.
- High-Temperature Epoxy Resin
- Designed to withstand extreme thermal conditions.
- Prevents degradation under continuous load.
Applications of Epoxy Resin in Transformers
🔹 Encapsulation of Transformer Coils & Windings – Prevents electrical faults.
🔹 Insulation of Bushings & Core Components – Enhances dielectric properties.
🔹 Protection Against Environmental Factors – Shields from moisture, dust, and chemicals.
🔹 Reduction of Noise & Vibration – Improves mechanical stability.
Advantages of Epoxy Resin in Transformer Manufactur-ing
✔ Improved Electrical Performance – Reduces power losses.
✔ Longer Lifespan – Enhances durability in harsh conditions.
✔ Eco-Friendly – Used in dry-type transformers, reducing oil leakage risks.
✔ Fire Resistance – Reduces flammability compared to traditional insulation methods.