11KW 2-Pole Three-Phase Induction Motor Introduction

This 11KW three-phase induction motor is a high-efficiency high-speed industrial drive component, featuring a 2-pole configuration and a rated speed of 2800 RPM—closely approaching the 3000 RPM synchronous speed under 50Hz three-phase alternating current (AC) power supply. Its core operation adheres to the principle of electromagnetic induction: when three-phase AC is supplied to the stator windings, a high-speed uniform rotating magnetic field (RMF) is generated, with rotational speed inversely proportional to pole pairs. The RMF cuts the rotor conductors to induce electromotive force (EMF) and eddy currents, and their interaction produces strong electromagnetic torque, driving the rotor to rotate asynchronously with a low slip ratio (3%-5% at rated load), ensuring stable high-speed power transmission.

Structurally optimized for high-speed durability, the motor adopts a rugged cast-iron frame with IP54 protection class, providing excellent mechanical rigidity, dustproof, and waterproof performance to withstand harsh industrial environments like high-speed workshops and HVAC facilities. The stator is fitted with high-purity oxygen-free copper windings encapsulated in Class F insulation material (155℃ thermal endurance), minimizing copper loss and preventing insulation breakdown under high-speed operation. The 2-pole rotor uses a die-cast aluminum squirrel-cage structure with precision dynamic balancing, ensuring low rotational inertia, high mechanical strength, and minimal maintenance, paired with precision sealed deep-groove ball bearings lubricated by high-temperature lithium-based grease to reduce frictional loss and ensure smooth high-speed rotation.

Key performance parameters are calibrated for high-speed industrial applicability: rated voltage 380V (50Hz), rated current approximately 22.3A, and a rated power factor of ≥0.89. It delivers a starting torque of 1.8 times the rated torque for reliable startup under light-to-medium loads, with a maximum torque of 2.2 times the rated torque to cope with occasional load fluctuations. Compliant with IE2/IE3 energy efficiency standards, it minimizes energy consumption, with noise emission controlled at ≤78dB at 1m. Widely used in high-speed mechanical processing, centrifugal pumps, HVAC blowers, and air compressors, it supports both horizontal and vertical mounting. Regular maintenance—including insulation resistance testing (≥2MΩ at 500V DC) and bearing lubrication—extends its service life, making it a cost-effective high-speed drive solution.