30KW 4-Pole Three-Phase Induction Motor Introduction

This 30KW heavy-duty three-phase induction motor is a high-performance industrial drive core, 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 operation is rooted in 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 to induce 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 (2.5%-4% at rated load), ensuring stable power transmission for heavy-load equipment.

Structurally engineered for heavy-duty scenarios, the motor adopts a thick-walled 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, high-humidity water treatment plants, and outdoor operations. 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 under long-term heavy-load operation. The 4-pole rotor uses a high-strength die-cast aluminum squirrel-cage structure, paired with precision sealed deep-groove ball bearings lubricated by high-temperature lithium-based grease, reducing frictional loss and ensuring smooth rotation even under high torque.

Key performance parameters are calibrated for heavy-industry demands: rated voltage 380V (50Hz), rated current approximately 58A, rated power factor ≥0.88, starting torque 1.8 times the rated torque for reliable startup under heavy loads, and maximum torque 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 applied in heavy-industry equipment like belt conveyors, large water pumps, and water treatment machinery, it supports horizontal and vertical mounting. Regular insulation resistance testing (≥2MΩ at 500V DC) and bearing maintenance extend its service life, making it a durable and cost-effective drive solution.