# Based on temperature withstanding ability, classify insulating material.

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Based on temperature withstanding ability, classify insulating material.

 class Temperature withstanding ability in 0C Materials Y 90 Cotton, silk paper and similar organic materials neither impregnated nor immersed in any oil, rubber, PVC. A 105 Impregnated paper, silk, cotton, polyamides resins C 120 Enameled wire insulations on base of polyvinyl formal, polyurethane and epoxy resins, molding etc. B 130 Inorganic materials ( mica, fibre, glass, asbestos) impregnated with varnish and other compounds F 155 Mica, polyester, epoxide varnishes with a high heat resistance H 180 Composite materials on mica, fiber, glass and asbestos bases, impregnated with silicon rubber except other rubber compounds C Above 180 Mica, ceramics, glass, Teflon, quartz, etc.

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