Insulation grade division

The insulation properties of insulating materials are closely related to temperature. The higher the temperature, the worse the insulation properties of the insulating material. To ensure dielectric strength, each insulating material has an appropriate maximum allowable operating temperature below which temperatures can be safely used for long periods of time. Above this temperature, it will age rapidly. According to the degree of heat resistance, the insulating materials are classified into Y, A, E, B, F, H, C, etc., and the temperatures corresponding to the respective heat resistance levels are as follows:

Y-class insulation temperature resistance 90°C, Class A insulation temperature resistance 105°C, E-class insulation temperature resistance 120°C, Class B insulation temperature resistance 130°C, Class F insulation temperature resistance 155°C, Class H insulation temperature resistance 180°C, C-class The insulation temperature is above 200 °C.