Three-phase asynchronous motor rotor structure can be divided into squirrel-cage motors and wound rotor motors.Three-phase asynchronous Brushed DC Motor protection type can be divided into open type (IP11) three-phase asynchronous motor, three-phase asynchronous motor protection (IP22 and IP23), a closed three-phase asynchronous motors (IP44), explosion-proof three-phase asynchronous motor .Open type (IP11): the price is low, heat the best, because the rotor windings and exposed to the outside world, so can only be used dry, but there is very little dust-free environment, corrosive and explosive gases.
Protection type (IP22 and IP23): better ventilation and cooling conditions, to prevent water droplets, iron and other debris falling into the motor inside the outside world for much more dry and dust nor corrosive and explosive gases in the environment.Enclosed (IP44): suitable for wet, dusty, prone to wind and rain erosion, corrosive gases and other more harsh working environment, the most common.
Three-phase asynchronous Brushless DC Motor cooling air can be divided into self-cooled three-phase asynchronous motors, fan-cooled three-phase asynchronous motor, he three-phase asynchronous motor fan-cooled, three-phase asynchronous motor ventilation pipe.
Three-phase asynchronous motor mounting structure can be divided into horizontal three-phase asynchronous motors, vertical three-phase asynchronous motor, three-phase asynchronous DC Motor Controller with foot, three-phase asynchronous motor with flange.Three-phase asynchronous motor insulation level can be divided into Class E, B grade, F grade, H grade three-phase asynchronous motor.Fixed according to work can be divided into continuous three-phase asynchronous motors, intermittent three-phase asynchronous motor, three-phase asynchronous motor intermittent.
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