1.5KW 2-Pole Three-Phase Induction Motor Introduction

This 1.5KW three-phase induction motor is a high-efficiency industrial drive unit, defined by its 2-pole configuration and a rated speed of 2800 rpm—closely approaching the synchronous speed of 3000 RPM 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 a rotational speed proportional to the power frequency and inversely proportional to the number of pole pairs. This RMF cuts the rotor conductors, inducing an electromotive force (EMF) and eddy currents within the rotor, and the interaction between these induced currents and the RMF generates electromagnetic torque, driving the rotor to rotate asynchronously with a low slip ratio (typically 3% to 5% at rated load), ensuring stable power transmission and strong load adaptability.

Engineered with optimized electromagnetic circuit design, the motor complies with IE2/IE3 international energy efficiency standards, minimizing active power loss while suppressing harmonic distortion and noise emission (≤75dB at 1m distance). This performance is achieved through precision-balanced squirrel-cage rotor assemblies, optimized air gap clearance (0.2-0.5mm), and a stator core laminated with high-permeability silicon steel sheets—effectively reducing iron loss and copper loss, and enhancing magnetic flux density. The motor adopts a rugged cast-iron frame with IP54 protection class as standard, providing excellent mechanical rigidity, dustproof, and waterproof performance, enabling reliable operation in high-humidity, dusty, or moderately corrosive industrial environments such as workshops and construction sites.

In terms of structural details, the stator is equipped with high-purity oxygen-free copper windings encapsulated in Class F insulation material, which boasts a thermal endurance temperature of 155℃ and superior dielectric strength—effectively preventing insulation breakdown caused by overheating and extending the motor’s service life. The 2-pole rotor features a die-cast aluminum squirrel-cage structure, a classic design that offers high mechanical strength, low rotational inertia, and minimal maintenance requirements, making it suitable for long-term continuous duty cycle operation. Precision sealed deep-groove ball bearings are installed at both ends of the output shaft, lubricated with high-temperature lithium-based grease to reduce frictional loss and ensure smooth rotation, while the frame’s electrophoretic corrosion-resistant coating enhances resistance to ambient wear and chemical erosion.

Key performance parameters are meticulously calibrated for industrial applicability: rated power of 1.5KW, rated voltage of 380V (three-phase, 50Hz), rated current of approximately 3.2A, and a rated power factor of ≥0.86. It delivers a starting torque of 1.8 times the rated torque, ensuring reliable startup under light-to-medium load conditions, and a maximum torque of 2.2 times the rated torque to cope with occasional load fluctuations. The motor exhibits excellent speed regulation stability, with a speed variation rate of ≤2% under rated load changes, meeting the precision requirements of load-sensitive equipment. Its compact footprint (customizable for horizontal or vertical mounting) ensures compatibility with various transmission components such as couplings, belts, and gears, facilitating flexible installation in limited spaces.

Classified as a light-to-medium-duty industrial motor, it is widely deployed across multiple sectors. In mechanical processing, it serves as the core drive for small lathes, drilling machines, and packaging automation equipment, providing steady torque to guarantee processing precision. In HVAC and fluid engineering, it powers centrifugal pumps, axial flow fans, and air compressors, adapting to continuous operation demands. For agricultural and municipal applications, it is commonly used in irrigation systems, grain conveyors, and small-scale water treatment equipment. The motor complies with IEC 60034 international standards, featuring inherent overload and phase-loss protection potential when matched with dedicated motor protectors, which trigger automatic shutdown under abnormal conditions (e.g., phase loss, overload, overheating) to prevent motor damage.

To maximize operational efficiency and extend service life, the motor should be operated within the specified ambient temperature range (-15℃ to 40℃) and relative humidity ≤95% (non-condensing). Regular maintenance is recommended, including cleaning stator windings to remove dust and debris, inspecting bearing lubrication status and replacing grease periodically, testing insulation resistance (≥2MΩ at 500V DC), and tightening terminal connections to avoid poor contact and local overheating. With its balanced combination of energy efficiency, structural durability, and application versatility, this 1.5KW 2-pole 2800RPM three-phase induction motor offers a cost-effective and reliable power solution for diverse industrial, agricultural, and municipal applications.