Sale of discount motor mech , specific measures to reduce motor mechanical loss
First of all, let's look at how to save energy by changing the size of the fan. Everyone knows that a motor is a device that converts electrical energy into mechanical energy. Losses are generated during the conversion process. These losses appear in the form of heat, which makes the motor generate heat. The custom-made winding produces copper loss after the current flows, and the heat is transferred to the stator core through the slot insulation material, and then the stator core is transferred to the motor shell and dissipated to the space. The heat of the rotor is generated by the aluminum loss of the rotor and its friction. It is transferred to the rotor core and the inner fan surface. The inner fan stirs the heat to dissipate the heat in the motor space, and then transfers it to the stator core, end cover, and base. The two heats of the rotor are blown away by the external fan. Therefore, the size of the air volume of the external fan is the key to determining that the temperature of the motor cannot exceed the allowable temperature of its insulation material grade.
National standards stipulate the allowable temperature rise of motors with various insulation levels under rated operating conditions. The temperature of the hottest spot in the motor is not allowed to exceed the limit temperature of its insulation level. The common insulation levels of motors are as follows: Among them: allowable temperature rise = Allowable temperature limit-specified value of ambient temperature-hot spot temperature difference The hot spot temperature difference of the winding refers to the difference between the stable temperature of the winding hot spot and the average temperature of the winding when the motor has a rated load.
