What is the heat resistance of Insulating coatings, what is the heat resistance grade, and how many grades does it have?
The heat resistance of insulating coatings refers to the fact that the coatings can still maintain a certain mechanical strength and dielectric properties after being heated for a long time.
The highest working temperature of the insulating coating is the heat resistance grade. In the International Electrotechnical Commission (1.EC) specification, the maximum working temperature of an insulating material is usually determined by the temperature at which various properties of an insulating material can maintain more than 50% of the original performance after 2000 hours. When the operating temperature exceeds the maximum operating temperature of the insulating material, the material will be damaged or burned.
The heat resistance grades of insulating coatings formulated by the International Electrotechnical Commission in 1954 are as follows:
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