1. What is a 3-phase electric motor?
A 3-phase electric motor is an AC electric motor that uses a three-phase power source to operate. This is the most common type of motor in industrial applications due to its high efficiency, reliability and stable operation. A three-phase power source consists of three alternating currents with the same amplitude and frequency but 120 degrees out of phase, creating a rotating magnetic field in the motor.

Structure of a 3-phase electric motor:

- Stator:

+ The static part of the motor, containing coils arranged in a circle and 120 electrical degrees out of phase.

+ When three-phase power is supplied to these coils, a rotating magnetic field will be created.

- Rotor:

+ The rotating part of the motor, usually an iron or aluminum core, can be a squirrel cage rotor or a wound rotor.

+ The rotating magnetic field of the stator creates an induced current in the rotor, causing the rotor to rotate.

- Motor housing:

+ Protects internal components from external impacts and supports heat dissipation.

- Cooling fan blades:

+ Helps dissipate heat, ensuring the motor does not overheat during operation.

- Bearings:

+ Supports the rotor shaft, reduces friction and increases motor life.

2. Specifications of Hyosung 1.1kw 3-phase electric motor:
Hyosung 1.1KW 3-phase electric motor (3-phase electric motor) is a high-quality motor manufactured by Hyosung Korea. They have the following specifications:

- Capacity: 1.1KW – 1.5HP

- Mounting type: Base (TEFC), Flange (TE-F)

- Capacity: 4KW – 5.5HP

- Motor speed: 2P (2 Poles) ≈ 2900 rpm

- Motor speed: 4P (4 Poles) ≈ 1450 rpm

- Motor speed: 6P (6 Poles) ≈ 975 rpm

Voltage: 3-phase 380V/660V

Protection level: IP 55

Motor standard: IE1, IE2

Insulation level: Class F 155 ° C

2. Detailed drawing of Hyosung 3-phase electric motor:

2.1. Detailed drawing of Hyosung 1.1kw – 1.5HP electric motor – B3 base mounting type:
Technical drawing of Hyosung 1.1kw 3-phase motor - 2 poles: