22KW 2-Pole Three-Phase Induction Motor Introduction

This 22KW heavy-duty three-phase induction motor is a high-performance industrial drive core, 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 operation is based on the core principle of electromagnetic induction: when three-phase AC is supplied to the stator windings, a high-intensity uniform rotating magnetic field (RMF) is generated, with rotational speed determined by power frequency and pole pair count. The RMF cuts the rotor conductors, inducing electromotive force (EMF) and eddy currents, and the interaction between these induced currents and the RMF produces strong electromagnetic torque, driving the rotor to rotate asynchronously with a low slip ratio (2%-4% at rated load), ensuring stable and efficient power transmission for heavy-load equipment.

Structurally engineered for heavy-duty operations, the motor adopts a reinforced cast-iron frame with IP55 protection class, providing excellent mechanical rigidity, dustproof, and waterproof capabilities to withstand harsh industrial environments such as high-dust workshops and high-humidity production sites. The stator is equipped with high-purity oxygen-free copper windings encapsulated in Class F insulation material, boasting a thermal endurance temperature of 155℃, which minimizes copper loss and prevents insulation breakdown caused by long-term high-load operation. The 2-pole rotor features a die-cast aluminum squirrel-cage structure with precision dynamic balancing, ensuring high mechanical strength, low rotational inertia, and minimal vibration, paired with large-diameter precision sealed deep-groove ball bearings lubricated by high-temperature lithium-based grease to reduce frictional loss and extend service life.

Key performance parameters are calibrated for heavy-duty applicability: rated voltage 380V (50Hz), rated current approximately 42.5A, and a rated power factor of ≥0.89. It delivers a starting torque of 1.8 times the rated torque for reliable startup under heavy loads, with a maximum torque of 2.3 times the rated torque to cope with sudden load fluctuations. Compliant with IE3 high-efficiency standards, it significantly reduces energy consumption, with noise emission controlled at ≤82dB at 1m. Widely used in heavy machinery, industrial fans, air compressors, and large-scale fluid engineering equipment, it supports horizontal and vertical mounting. Regular insulation resistance testing (≥2MΩ at 500V DC) and bearing lubrication maintenance ensure long-term stable operation, making it a cost-effective heavy-duty drive solution.