1.1KW 6-Pole Three-Phase Induction Motor Introduction

This 1.1KW three-phase induction motor is a high-stability industrial drive component, characterized by its 6-pole configuration and a rated speed of 900 rpm—closely approaching the synchronous speed of 1000 RPM under 50Hz three-phase alternating current (AC) power supply. Its core operation is based on the principle of electromagnetic induction: when three-phase AC is supplied to the stator windings, a uniform rotating magnetic field (RMF) is generated, which cuts the rotor conductors to induce electromotive force (EMF) and eddy currents. The interaction between induced currents and the RMF produces electromagnetic torque, driving the rotor to rotate asynchronously with a low slip ratio (3% to 5% at rated load), ensuring steady power output and strong load adaptability.

Engineered with optimized electromagnetic circuit design, the motor meets IE2/IE3 international energy efficiency standards, minimizing energy consumption while reducing harmonic vibration and noise emission (≤72dB at 1m distance). This is achieved through precision-balanced squirrel-cage rotor assemblies, optimized air gap clearance, and a stator core composed of high-permeability silicon steel laminations—effectively reducing core loss and enhancing magnetic flux density. The motor features a rugged cast-iron frame with IP54 protection class as standard, providing excellent mechanical rigidity, dustproof, and waterproof performance, enabling stable operation in high-humidity, dusty, or moderately corrosive industrial environments.

In structural details, the stator is equipped with high-purity oxygen-free copper windings encapsulated in Class F insulation material, boasting a thermal endurance temperature of 155℃ and superior dielectric strength—preventing insulation breakdown and extending service life. The 6-pole rotor adopts a die-cast aluminum squirrel-cage structure, which offers high mechanical strength, low rotational inertia, and minimal maintenance requirements, making it suitable for long-term continuous duty cycle operation. Precision sealed deep-groove ball bearings are installed at both ends of the output shaft, lubricated with high-temperature lithium-based grease to reduce frictional loss, while the frame’s electrophoretic corrosion-resistant coating enhances resistance to ambient wear and chemical erosion.

Key performance parameters are calibrated for industrial applicability: rated power 1.1KW, rated voltage 380V (three-phase), rated frequency 50Hz, and rated power factor ≥0.82. It delivers a starting torque of 1.7 times the rated torque, ensuring reliable startup under light-to-medium loads, and a maximum torque of 2.1 times the rated torque to cope with occasional load fluctuations. The motor exhibits excellent speed regulation stability, with a speed variation rate ≤2% under rated load changes, meeting the requirements of load-sensitive equipment. Its compact footprint supports both horizontal and vertical mounting, compatible with various transmission components like couplings and belts.

Classified as a light-to-medium-duty motor, it is widely used across industries. In mechanical processing, it drives small lathes, milling machines, and packaging equipment, providing steady torque for precision processing. In agriculture, it powers irrigation pumps, grain conveyors, and greenhouse ventilation systems, adapting to intermittent and continuous operation. For municipal engineering, it is applied in small water treatment equipment, ventilation fans, and garbage sorting conveyors. Compliant with IEC 60034 standards, it supports overload and phase-loss protection when matched with dedicated protectors, triggering automatic shutdown under abnormalities to prevent damage.

To maximize efficiency and service life, operate the motor within -15℃ to 40℃ ambient temperature and ≤95% relative humidity (non-condensing). Regular maintenance includes cleaning stator windings, inspecting bearing lubrication, testing insulation resistance (≥2MΩ at 500V DC), and tightening terminals. This 1.1KW 6-pole 900RPM motor balances energy efficiency, durability, and versatility, offering a cost-effective, reliable power solution for industrial, agricultural, and municipal applications.