3KW 4-Pole Three-Phase Induction Motor Introduction

This 3KW three-phase induction motor is a high-stability 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 operation relies on the principle of electromagnetic induction: three-phase AC supplied to stator windings generates a uniform rotating magnetic field (RMF), which cuts rotor conductors to induce electromotive force (EMF) and eddy currents. 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 load-sensitive equipment.

Structurally engineered for durability and adaptability, the motor adopts a rugged cast-iron frame with IP54 protection class, providing effective dustproof and waterproof performance to withstand harsh industrial environments like dusty workshops and high-humidity facilities. The stator is equipped with high-purity oxygen-free copper windings encapsulated in Class F insulation material (155℃ thermal endurance), minimizing copper loss and preventing insulation breakdown. The 4-pole rotor uses a die-cast aluminum squirrel-cage structure, ensuring high mechanical strength and low maintenance, paired with precision sealed deep-groove ball bearings lubricated by lithium-based grease to reduce frictional loss.

Key performance parameters are calibrated for industrial applicability: rated voltage 380V (50Hz), rated current approximately 6.3A, power factor ≥0.86, starting torque 1.7x rated torque, and maximum torque 2.1x rated torque. Compliant with IE2/IE3 efficiency standards, it reduces energy consumption with noise ≤74dB at 1m. Widely used in mechanical processing, agricultural irrigation, and municipal water treatment, it supports horizontal/vertical mounting. Regular insulation testing (≥2MΩ at 500V DC) and bearing maintenance extend service life, making it a cost-effective drive solution.