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Temperature resistance level:

Allow the highest working temperature (℃) under the temperature of electrical properties, physical properties of the insulating material is still to keep the normal state, the temperature is beyond, the electrical properties of the insulating material or a physical performance index value would fall.

Damage: irreversible damage or direct damage to electrical products.

Commonly used heat resistance level for: Y (90 ℃), A (105 ℃), E (105 ℃) and B (130 ℃), F (155 ℃), H (180 ℃),C (220 ℃)

level

Insulation Materials

Heat-resistant temperature

Representative products

Y

Natural textiles such as wood, cotton, paper and fiber, textiles based on acetate and polyamine, and plastics that are readily pyrolyzed and have a lower melting point

90℃

Cotton belt

Shrink band

A

Work in mineral oil and oil or resin composite resin, Y-impregnated material enameled wire, varnished cloth, paint and oily paint, asphalt paint.

105℃

Oily paint silk

E

Polyester film and A-level composite materials, glass cloth, oily resin paint, polyvinyl acetal high-strength enameled wire.

120℃

Phenolic laminate

B

Polyester film impregnated with a suitable resin coated mica, glass fiber, asbestos and other products polyester paint, polyester enameled wire, vinyl heat-resistant enameled wire.

130℃

Epoxy board

F

Asbestos tapes reinforced with organic fiber materials, mica products, glass wool and asbestos, glass cloth, glass cloth and asbestos fiber-based laminates, inorganic materials for strengthening and asbestos tape reinforcement mica products, Better chemical thermal stability of polyester and alkyd composite silicone organic polyester paint.

155℃

Epoxy board

H

Non-reinforcing and inorganic materials for the reinforcement of mica products, thickened F-class materials, composite mica, silicone mica products, organic silicon paint, organic silicon rubber, polyimide composite glass cloth, composite film, Poly Xian Amine paint and so on.

180℃

Silicone glass cloth board

C

 

220℃

Bismaleimide glass cloth board