초록 ▼

A dielectric liquid composition for use in an electrical apparatus, such as a transformer. The dielectric composition is composed of 10% to 90% by weight of one or more hydrocarbon oils having a molecular weight distribution peak in the range of 460 to 720, and the balance being a polyalphaolefin ha

A dielectric liquid composition for use in an electrical apparatus, such as a transformer. The dielectric composition is composed of 10% to 90% by weight of one or more hydrocarbon oils having a molecular weight distribution peak in the range of 460 to 720, and the balance being a polyalphaolefin having a molecular weight distribution peak of 320 to 600. The dielectric liquid composition has a fire point above 300°C., a pour point at least as low as -20°C., and is thermally stable and essentially biodegradable.

대표청구항 ▼

An electrical apparatus for use in high fire point applications, comprising an outer casing, a pair of electrical conductors disposed within the casing, a dielectric material separating the conductors, and a liquid dielectric composition impregnating said dielectric material and comprising from 1% t

An electrical apparatus for use in high fire point applications, comprising an outer casing, a pair of electrical conductors disposed within the casing, a dielectric material separating the conductors, and a liquid dielectric composition impregnating said dielectric material and comprising from 1% to 25% by weight of a low molecular weight hydrocarbon oil having a molecular weight distribution peak in the range of 460 to 510, 40% to 80% by weight of a high molecular weight hydrocarbon oil having a molecular weight distribution peak in the range of 600 to 720, and the balance being a polyalphaolefin, said polyalphaolefin having from 8 to 12 carbon atoms in the olefin monomer and having a molecular weight distribution peak in the range of 320 to 600, said liquid dielectric composition having a fire point above 300°C. and a pour point at least as low as -20°C.