The reason why epoxy resin can become the primary insulation material for transformers is because it possesses many superior insulating properties and physical characteristics, making it highly suitable for use as insulation material in transformers. Here are some advantages of epoxy resin in this application:

Excellent Insulating Performance: Epoxy resin has outstanding electrical insulating properties, effectively isolating and blocking the conduction of current, thereby preventing leakage and arc faults. This is crucial for high-voltage electrical equipment such as transformers.

Mechanical Strength: Epoxy resin exhibits high mechanical strength after curing, capable of supporting the weight of windings and other transformer components, while also resisting vibrations and mechanical stress.

Heat Resistance: Epoxy resin can maintain its insulating performance at relatively high temperatures, which is particularly important under the heat conditions generated during transformer operation.

Chemical Resistance: Epoxy resin has good resistance to certain chemicals, capable of withstanding humidity, oil contamination, and other environmental factors that could degrade materials in transformers.

Good Adhesion: Epoxy resin adheres well to the surfaces of windings and other insulation materials, forming a robust insulating layer.

Ease of Processing: Epoxy resin can be easily poured into gaps between windings and other insulation components while in its liquid state and, upon curing, effectively encapsulates and secures various components.

Long-Term Stability: Epoxy resin typically demonstrates good long-term stability, resisting aging and maintaining insulating performance over extended periods.

In summary, epoxy resin becomes one of the primary insulation materials for transformers due to its insulating performance, mechanical properties, heat resistance, and other physical characteristics. However, the choice of insulation material should consider various factors, including the specific operating conditions, design requirements, and safety considerations of the transformer.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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