If an ordinary piece of paper were exposed to a temperature of 220°C, what would happen to it? Most likely, it would catch fire within seconds, turning into brittle ash. Traditional paper, cannot withstand such intense heat. But what if there was a type of paper with insulation properties, capable of enduring extreme temperatures? There is indeed such a material, known for its use in critical applications like transformers. Inside transformers, this special paper is strategically placed around the coils and between layers of winding to act as an insulator, protecting the device’s essential components from electrical discharges and thermal damage. This “paper” is essential for ensuring the transformer's durability and efficiency, particularly under high loads.

(Source: Dupont)

But what exactly is this special material? The answer dates to 1960, when Dr. Wilfred Sweeney, working in the now world-renowned DuPont laboratory, developed it. This unique material, named " Synthetic Aromatic Polyamide Polymer," was later branded as Nomex. Unlike traditional paper, Nomex is made from special meta-aramid fibers. These fibers are molecularly structured in a highly organized, interlocking pattern, forming a molecular net of incredible strength. Nomex fibers are about 5 to 6 times stronger than steel wire, have twice the flexibility, and weigh only one-fifth as much. Because of this unique molecular structure, Nomex paper is not only durable but also highly resistant to high temperatures, capable of withstanding up to 220°C. This remarkable material can perform in conditions that would be impossible for traditional materials, making it highly valuable for a range of demanding applications.

(Source: Dupont)

This heat-resistant property is also the reason why firefighters' protective clothing does not burn in high-heat situations. Thanks to its fire-retardant nature, Nomex was selected by NASA in 1988 for the classic orange space suits worn by astronauts, providing crucial protection in space. In 1997, Sony adopted Nomex for battery packaging, significantly reducing the risk of short circuits. Then, in 1999, CEEG made a groundbreaking innovation by incorporating Nomex into transformer manufacturing, producing the first “paper-based” transformer in the industry. This development introduced revolutionary features to the transformer market, such as enhanced environmental sustainability, biodegradability, superior heat dissipation, and higher overload capacity. The CEEG’s integration of Nomex into its transformers marked a shift toward safer, greener industrial solutions. The three most common applications of Nomex are in firefighting garments, aerospace and military equipment, and electrical equipment. These uses highlight Nomex's versatility and reliability across industries where safety and durability are paramount.

In transformer operation, every 6°C increase in temperature can cut insulation life by half. Therefore, for a transformer, the lifespan of its insulation material is almost synonymous with the lifespan of the transformer itself. DuPont’s Nomex insulation paper not only excels in high-temperature resistance and insulation but also offers exceptional strength, flexibility, tear resistance, and resilience to moisture, radiation, and abrasion. Additionally, it is non-toxic and flame-resistant. These qualities make it an ideal insulation material that essentially “protects the soul” of transformers, extending their operational life and reliability. This makes DuPont Nomex insulation paper a perfect match for CEEG transformers.

CEEG transformers are renowned for their outstanding quality and durability. By incorporating DuPont Nomex insulation, CEEG transformers not only achieve superior thermal resistance and safety but also align with modern demands for eco-friendly and sustainable solutions. This combination ensures CEEG transformers perform with stability and reliability in even the most challenging environments, offering clients a long-lasting and safe choice that represents the future of transformer technology.