Views: 0 Author: Site Editor Publish Time: 2024-10-11 Origin: Site
Transformers are vital components in electrical systems, responsible for adjusting voltage levels and ensuring efficient energy distribution. To maintain their performance and safety, reliable insulation materials are crucial. Insulation sheets, such as Epoxy sheets (G10, G11, FR4) and Bakelite sheets, play a fundamental role in protecting transformers from electrical faults, mechanical stress, and heat.
One of the most critical roles of insulation sheets in transformers is providing electrical insulation for coils and windings. Transformers contain high-voltage and low-voltage windings that must be effectively insulated to prevent electrical shorts and arcing.
Epoxy sheets (G10, G11, FR4) are known for their high dielectric strength, ensuring reliable insulation even under high voltage. They separate different windings, preventing interference and electrical failure.
G10 and G11 Epoxy sheets are particularly suited for transformers due to their superior resistance to moisture and electrical stress, while FR4 offers additional flame-retardant properties, providing enhanced safety in high-risk environments.
In addition to insulation, Epoxy sheets serve as structural support for critical transformer components, including the core and windings. Their high mechanical strength allows them to endure the physical stress that occurs during transformer operation.
Epoxy sheets are widely used to support windings, ensuring that these components remain securely in place even under extreme conditions, such as high temperatures or heavy mechanical loads.
Bakelite sheets, while not as strong as Epoxy, offer a cost-effective solution for low-load applications in smaller transformers, providing adequate mechanical support.
Transformers rely on proper separation between high-voltage and low-voltage components to avoid electrical faults. Insulation sheets like Epoxy (G10, G11) and Bakelite are often used as partition sheets, providing essential physical isolation.
These sheets act as barriers, preventing contact between different voltage areas and ensuring the transformer operates safely without risk of electrical breakdown.
The heat resistance and fire-retardant properties of FR4 Epoxy sheets further enhance their role in isolating critical components, reducing the risk of fire in high-stress environments.
Transformers generate significant heat during operation, and insulation materials must withstand these high temperatures without degrading. Epoxy sheets, particularly G11, are prized for their thermal stability and ability to maintain their insulating properties in high-heat environments.
G11 Epoxy sheets are specifically engineered for high-temperature applications, ensuring that the insulation remains effective even when the transformer operates under demanding conditions.
Bakelite sheets also provide a degree of heat resistance, making them suitable for use in smaller or lower-voltage transformers where thermal demands are less intense.
Transformers often operate in environments exposed to moisture, chemicals, and other environmental hazards. Epoxy sheets (G10, G11) are known for their moisture resistance and chemical stability, making them ideal for use in outdoor or industrial transformer applications.
Epoxy sheets protect the transformer from environmental damage, ensuring that insulation remains effective even in humid or corrosive conditions.
Bakelite sheets, while less resistant to moisture, perform well in dry environments, offering reliable insulation in controlled settings.
While Epoxy sheets are essential in high-voltage transformers due to their superior insulating and mechanical properties, Bakelite sheets provide a more economical solution for smaller transformers and low-voltage applications.
Bakelite offers sufficient electrical insulation and mechanical support in applications where the thermal and voltage demands are not as high, making it an affordable alternative without compromising on performance.
At Fenhar, we proudly team with Welldone Power Transformer Manufacturer to supply an all-inclusive range of cutting-edge insulation solutions—G10, G11 and FR4 epoxy laminates engineered for outstanding dielectric performance and heat resistance in the toughest high-voltage environments; cost-effective Bakelite sheets tailored for lower-voltage units; precision-machined tubing options—from oil-immersed kraft-paper spirals to dry-type Mylar® and Nomex® sleeves—that safeguard windings and hardware under stress; and advanced insulating papers, including reinforced cellulose and aramid blends, that minimize dielectric losses, resist tear and aging, and collectively enhance transformer reliability, longevity and energy efficiency.
