How to distinguish the silicone rubber self-adhesive tape insulation grade?

In insulation performance, because of different requirements and different levels can be divided into: Y, A, E, B, F, H


For people who are not technical or engineering, it's often difficult to figure out what's the difference. Here's a brief introduction:


The insulation grade of the motor refers to the heat-resistant grade of the insulation material used, which is classified into A, E, B, F, and H grades. Permissible temperature rise refers to the limit of the increase of the temperature of the motor compared with the ambient temperature.


Insulation temperature class A Class E Class B Class F Class H Class


The maximum allowable 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, insulating materials are the weakest link. Insulating materials are particularly susceptible to high temperatures and accelerate aging and damage. Different insulation materials have different heat resistance properties, and electrical equipment using different insulation materials has different ability to withstand high temperatures. Therefore, the general electrical equipment stipulates the maximum operating temperature.