In terms of insulation performance, because of different requirements and different levels, it can be divided into: Y, A, E, B, F, H
For people who don't do technology or engineering, it's often difficult to figure out what the difference is.
The insulation grade of the motor refers to the heat resistance level of the insulating material used, which is divided into A, E, B, F, and H grades. The allowable temperature rise refers to the limit at which the temperature of the motor rises compared to the ambient temperature.
The temperature class of the insulation is Class A, Class E, Class B, Class F, Class H
Maximum permissible temperature (°C) 105 120 130 155 180
Winding temperature rise limit (K) 60 75 80 100 125
Performance reference temperature (°C) 80 95 100 120 145
In electrical and electronic equipment, insulation is the weakest link. Insulation materials are particularly susceptible to high temperatures, which can accelerate aging and damage. Different insulating materials have different heat resistance, and the ability of electrical equipment with different insulating materials to withstand high temperatures is different. Therefore, the maximum temperature at which electrical equipment works is specified in general.
According to the ability of different insulating materials to withstand high temperatures, 7 maximum allowable temperatures are specified, which are arranged according to the temperature size: Y, A, E, B, F, H and C. Their permissible operating temperatures are: 90, 105, 120, 130, 155, 180 and 180°C or more.
