Nomex® 910—Engineered Cellulose Insulation
DuPont™ Nomex® 910 is a unique aramid enhanced cellulose material that exhibits physical and electrical properties between Nomex® aramid and cellulosic papers.
DuPont™ Nomex® 910 is a unique aramid enhanced cellulose material, composed of high-quality electrical grade cellulose pulp and the same binder made from high-temperature meta-aramid polymer as used in other Nomex® brand papers. The paper consists of a single consolidated sheet without any additional binders or additives.
It exhibits physical and electrical properties that are between Nomex® aramid and cellulosic papers. Therefore, it can be used in optimizing transformer designs with regards to cost, operating temperatures or extension of insulation system life.
Based on thermal aging (IEEE C57.100™-2001), the thermal performance of Nomex® 910 is at least 20°C better than that of standard Kraft paper in mineral oil systems. This performance enhancement translates to a thermal class of 130°C in mineral oil.
Comparing dielectric test results in mineral oil (ASTM D149), this paper has more than 30% higher AC dielectric strength than Kraft paper. This could provide an advantage in the design of transformer windings, with potential savings in multiple layer insulation structures.
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