This is 3-phase 6-pole AC induction motor or asynchronous motor with 3 hp (2.2kW) output and 940rpm speed, which can be widely used in various kinds of general purpose machineries like fans, pumps, compressors, gearboxes, machine tools, transportation and so on. Low price and easy maintenance.
3hp Induction Motor Specification
||Horizontal Foot Mounting (B3)
||Output≤4hp (3kW), Y connection
Output≥5.5hp (4kW), Delta connection
|Degree of protection
||TEFC (compliance to IC 411 code of IEC 60034-6)
||3hp or 2.2kW
|Nominal Current (full load)
|Power Factor( cosφ)
|Nominal Torque (Tn)
|Locked Rotor Torque/Nominal Torque (TST/Tn)
|Maximum Torque/Nominal Torque (Tmax/Tn)
|Locked Rotor Current/Nominal Current (IST/In)
||Less than 1000m above sea level
Three-phase Induction Motor Dimensions
||Mounting Dimensions (mm)
Wiring Diagrams (Three-phase squirrel-cage induction motor)
Tips: Asynchronous motors versus synchronous motors
Induction motor refers that under the effect of two magnetic fields both the rotating magnetic field generated by alternating currents access to stator and the magnetic field produced by the rotor affected, the rotor rotates with the rotating magnetic field of stator. The magnetic field of rotor is slower than the one of stator thus there is a slip. Due to its non-synchronous, it is called as asynchronous motor.
Synchronous motor refers that under a constant magnetic field formed by man-made direct current the rotor synchronously rotates with the rotating magnetic field of stator.
Stator windings are the same between synchronous and induction motor, but the main difference is the rotor structure.
For the synchronous motor, as for DC excitation windings of rotor, the current is introduced by slip rings under the effect of external excitation power supply. Since rotor windings of induction motor is short-circuited and the current is generated by electromagnetic induction.
Synchronous motors are mainly introduced into large size generators, while almost all induction motors are run in electric motors.