Insulating Board EPGC204

Two Points to Note about the Use of Insulating Materials

There are two points to note about the use of insulating materials: (1) the insulation grade of the motor is determined by the material with the lowest heat resistance rating among the main insulating materials used. In some special cases, in order……

There are two points to note about the use of insulating materials:

(1) the insulation grade of the motor is determined by the material with the lowest heat resistance rating among the main insulating materials used. In some special cases, in order to improve the reliability of operation, the insulation grade should be reduced.

(2) temperature has a great influence on the life of insulating materials. Experimental results show that the life of class A insulation t (A) has the following relationship with using temperature theta (℃): in t=ce^-a, c and a are constants decided by test. When a approaches to 0.088, every time higher 8 ℃, insulation life will be shortened the half. If the motor is working in a short period of time, the maximum allowable working temperature of the material shall be increased accordingly.

Leave a message

Your email address will not be published. Required fields are marked *

Goto Top
ztelec