Electrical network & # 8203; The insulation of the motor rating refers to their level of heat insulation materials used, points A, E, B, F, H. Allow temperature refers to the temperature of the motor and the limit of the elevated ambient temperature contrast. Temperature rating of the insulation class A E B F class H maximum allowable temperature (℃)105 120 130 155 180 winding temperature rise limit (K）Reference temperature (60, 75, 80, 100, 125 performance℃)80 95 100 120 145 in generators and other electrical equipment, insulation materials is the most feeble link. Insulation material is particularly vulnerable to the effects of high temperature and speed up the aging and damage. There are differences between the different functions of insulating material heat-resisting, choose different insulation of electrical equipment for its ability to tolerate high temperature is different. Thus the general electrical equipment are the operational rules of the maximum temperature. People depending on the ability of insulating material resistant to high temperature 7 is defined for the allowable maximum temperature, according to the temperature size are: Y, A, E, B, F, H and C. They allow operating temperature: 90, 105, 120, 130, 155, 180 and above 180 ℃. Therefore, class B insulation to clarify is the selection of insulation heat temperature of 130 ℃. The user should make sure not to make the generator when working in generator insulation materials beyond the ability to ensure that the generator normal operation temperature. Insulation class for class B insulation materials, mainly by mica, asbestos, glass wool by organic adhesive agglutination or dipping. For example, to join your motor insulation class F 155 degrees, and class B temperature rise to 80 degrees, so your machine working environment temperature should be less than 15580 = 75 degrees.
