The application of epoxy glass cloth laminates in transformers mainly lies in its excellent insulation properties. Epoxy glass cloth laminates, made of epoxy resin and glass fiber cloth through high-temperature and high-pressure thermal curing, are an insulation material with high mechanical strength, good electrical performance, dimensional stability, wear resistance, and chemical corrosion resistance.

In transformers, which are crucial equipment in power systems, good insulation protection is needed between internal electrical components to ensure the normal operation of power equipment. When applied inside transformers, epoxy laminates can effectively improve the insulation performance of transformers and prevent short circuits, leakage, and other faults between electrical components.

Moreover, epoxy laminates have good temperature tolerance and can maintain stable performance at high temperatures. Inside transformers, they can help reduce temperature, contributing to heat dissipation and stable operation of transformers.

In transformers, several types of epoxy glass cloth laminates are mainly used, including:

1. Epoxy Phenolic Glass Cloth Laminates: These are made by impregnating alkali-free glass cloth with epoxy phenolic resin and then pressing and laminating. They have high mechanical and dielectric properties, as well as high strength and good processability. They are suitable for use in transformers due to their stability in humid environments.

2. Specific Types Like 3240, 3242（G11）, 3243 (FR4) and 3250(EPGC308): These laminates also have high mechanical and dielectric properties, good heat and moisture resistance, and stable dielectric properties after immersion in water. They can be used as insulation structural components in transformers and are applicable in damp environments.

These laminates are chosen based on their insulation performance, heat resistance, mechanical strength, and processing characteristics, which make them ideal for use in transformers.

In summary, epoxy glass cloth laminates are widely used in transformers due to their insulation properties and mechanical strength, ensuring the stable operation of transformers.