In the nameplate of the three-phase asynchronous motor, various parameters are generally marked, such as model, power, insulation level, current, connection, etc., then what is the insulation level of the three-phase asynchronous motor? Here is a simple understanding with Senli Motor Xiaobian.

       The insulation grade refers to the highest heat resistance grade of the insulation material, and we arrange it from small to large according to its heat resistance temperature:ALv.,ELv.,BLv.,F Lv.,HLv.,CLv. We take the commonBFor example, the maximum temperature that the insulation material of the motor can withstand is130℃It should be noted here that this temperature is not the external temperature, but the maximum temperature of the insulation material.

       We usually express the appearance temperature by temperature rise, temperature rise refers to the motor compared with the surrounding environment, the highest allowable rise in temperature, our country stipulates the standard environmental temperature40℃, thenBGrade insulatedThree-phase asynchronous motorThe highest temperature rise is80℃(130℃-40℃=80℃).

       When the surrounding ambient temperature is found to be too high, the allowable temperature rise of the equipment will be reduced, so here, Senli Motor Xiaobian suggests that the equipment can be appropriately reduced in high temperature capacity.

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