11KW 4-Pole Three-Phase Induction Motor Introduction

This 11KW three-phase induction motor is a high-performance industrial drive unit, featuring a 4-pole configuration and a rated speed of 1400 RPM—closely approximating the 1500 RPM synchronous speed under 50Hz three-phase alternating current (AC) power supply. Its core operational mechanism relies on the principle of electromagnetic induction: when three-phase AC is supplied to the stator windings, a 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 stable electromagnetic torque, driving the rotor to rotate asynchronously with a low slip ratio (3%-5% at rated load), ensuring consistent power transmission for heavy-duty load-sensitive equipment.

Structurally engineered for durability and harsh-environment adaptability, the motor adopts a rugged cast-iron frame with IP54 protection class, providing reliable dustproof and waterproof performance to withstand dusty workshops, high-humidity facilities, and outdoor auxiliary equipment. 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 effectively prevents insulation breakdown caused by long-term high-load operation. The 4-pole rotor features a die-cast aluminum squirrel-cage structure, ensuring high mechanical strength, low rotational inertia, and minimal maintenance requirements, paired with 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 meticulously calibrated for industrial applicability: rated voltage 380V (50Hz), rated current approximately 22A, and a rated power factor of ≥0.88. It delivers a starting torque of 1.8 times the rated torque for reliable startup under heavy 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 while controlling noise emission at ≤78dB at 1m. Widely used in industrial processing, water pumps, ventilation equipment, and transmission machinery, it supports both horizontal and vertical mounting. Regular insulation resistance testing (≥2MΩ at 500V DC) and bearing lubrication maintenance ensure stable long-term operation, making it a cost-effective and reliable heavy-duty drive solution.