37KW 4-Pole Three-Phase Induction Motor Introduction

This 37KW three-phase induction motor is a high-power heavy-duty 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 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 robust cast-iron frame with IP55 protection class, providing superior dustproof, waterproof, and anti-corrosion performance to withstand harsh industrial environments such as high-temperature workshops, chemical plants, and outdoor facilities. The stator is equipped with high-purity oxygen-free copper windings encapsulated in Class H insulation material, boasting a thermal endurance temperature of 180℃, which minimizes copper loss and prevents insulation breakdown under long-term heavy-load operation. The 4-pole rotor features a die-cast aluminum squirrel-cage structure reinforced with high-strength alloys, ensuring excellent mechanical rigidity and wear resistance, paired with precision sealed spherical roller bearings lubricated by high-temperature synthetic 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 72A, 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 ≤85dB at 1m. Widely used in heavy-duty industrial equipment such as air compressors, centrifugal pumps, and conveyor systems, it supports horizontal and vertical mounting. Regular insulation resistance testing (≥2MΩ at 500V DC) and bearing maintenance ensure stable operation, making it a durable and cost-effective drive solution for heavy-industry scenarios.