A,the structure of the three-phase asynchronous motor

A,the structure of the three-phase asynchronous motor,is made up of stator,rotor and other accessories. 1,the stator core Part of motor magnetic circuit,and placed on the stator winding.Structure:the stator iron core by 0.35 ~ 0.5 mm thick surface is commonly insulating layer of silicon steel sheet coining,overlying and become,within the core of the circle has a uniform distribution trough,which embedded in the stator winding.Trough the stator core has the following kinds:Semi-closed type slot:the efficiency and power factor of three phase generator the motor is higher,but the winding wire and insulation are more difficult.Commonly used in low-voltage motor.Half-open mouth slot:can put molding winding embedded,commonly used in large and medium-sized low-voltage motors.The so-called forming the windings can be treated with insulation in advance and then into the slot.Open rack slot:to put molding winding embedded,insulation method is convenient,mainly used in high voltage motor.2,the stator winding Access is the circuit part of the motor,three-phase alternating current (ac),to produce a rotating magnetic field.Structure:by the three in the space between 120 ° Angle,said arrangement can be connected with the same structure of the winding,the winding of the coil embedded respectively according to certain rule In electric motor laminations the stator slot.

The main of the stator winding insulation project has the following three:(guarantee between the

conductive part of the winding and iron core reliable insulation and reliable insulation between the winding itself).(1) of insulation:the whole and the stator winding insulation between the stator

core.Between diction and insulation:each phase of the stator winding insulation.(3) the turn-to-turn

insulation:each phase of the stator winding turn-to-turn insulation each wire.The motor terminal box

wiring:Motor terminal box has a wiring board,six of the three-phase winding thread in two rows,up and

down and from left to right are the three most wiring pile arrangement of the no.1 (U1),2 (V1),3

(W1),pile bottom three wiring from left to right to arrange the Numbers for 6 (W2),4 (U2),5 (V2),the

three phase windings into stars Connection or delta connection.All manufacturing and maintenance

shall be according to the serial number.3,stand Function:fixed ends and to support the rotor,stator

core and plays a role of protection,heat dissipation and so on.Structure:stand for cast iron

parts,usually large asynchronous motor base plate is commonly used in welding,micro motor frame

adopts cast aluminum.Enclosed machine stand outside Face with radiating rib to increase the cooling

area,protected on both ends of the frame of the motor end cover open vent,make motor inside and

outside air electricalmotor1.blogspot.com convection,can be directly to facilitate heat dissipation.