YVF315L-4A VVVF Three-phase Asynchronous 4 Pole Rpm motor

AIMIN ELECTRICS CO., LTD. is one of the leading manufacturers and suppliers of yvf315l-4a vvvf three-phase asynchronous 4 pole rpm motor in China. With abundant experience, we are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk premium products made in China here and get quotation from our factory.

Brief Introduction

The AIMIN YVF315L-4A is a heavy-duty variable-frequency speed-regulating three-phase asynchronous motor engineered to meet the demanding requirements of modern industrial automation and continuous duty applications. Designed for precise speed control when operated with a modern variable frequency drive (VFD), this motor balances exceptional torque capability, high electrical efficiency, and long-term operational stability. Delivering a rated power output of 185 kW with a 380 V rated voltage and 329 A rated current at 50 Hz, it is capable of operating reliably across a wide frequency spectrum. Built for demanding 4-pole synchronous baseline operation, the motor's optimized electro-magnetic configuration provides outstanding dynamic control and low operational noise throughout its running cycle. Understanding the operational dynamic of a 4 pole rpm curve is critical when integrating this unit into automated machinery, as it yields a base rated speed of 1485 r/min at 50 Hz while maintaining smooth speed regulation during low-frequency or over-speed operations.

Engineered with heavy industry in mind, the motor features an IP55 protection degree rating, ensuring effective ingress protection against airborne dust particulates, moisture, and water splashes commonly encountered in tough operational environments. Built in accordance with standard mounting configuration IM B3, the structural frame, end-shields, and solid foot supports provide high rigidity to withstand significant mechanical stresses, torque spikes, and vibration. To ensure continuous heat dissipation during extended low-speed, high-torque operation-where self-ventilating fans become less effective-the unit utilizes an independent forced-air cooling fan designated as IC 416. This separate cooling arrangement delivers constant airflow regardless of the rotor's rotational speed, preventing thermal overload and protecting internal insulation systems rated up to Thermal Class 155 (F). High-grade precision bearings (LYC 6319/C3 on the drive end and 6319/C3 on the non-drive end) further minimize friction losses, enhance shaft radial loading capacity, and extend overall service life under uninterrupted S1 continuous duty cycles.

As factory automation systems grow increasingly complex, precise drive matching becomes paramount. The YVF series stator winding architecture is specifically insulated to handle the high voltage rise rates (dV/dt) and electrical stresses inherent to modern PWM inverter outputs. When driven by a standard inverter, the motor offers a dual torque-power characteristic: a constant-torque frequency range (e.g., 5–50 Hz) for heavy-load starting and consistent material transport, complemented by a constant-power frequency range (50–70 Hz) for high-speed operation. At the 50 Hz rated point, the accurate 4 pole rpm matching ensures that the motor reaches its nominal thermal and mechanical equilibrium without efficiency degradation. The robust magnetic circuit design minimizes harmonic losses and cogging effects at low frequencies, delivering smooth, ripple-free torque from minimal speeds up to its maximum rated limits.

Weighing approximately 1054 kg and compliant with the JB/T 7118 standard, the YVF315L-4A is tailored for heavy industrial applications across mining, metallurgy, chemical processing, water treatment, power generation, and general manufacturing. It serves as a dependable prime mover for heavy conveyor belts, industrial pumps, large ventilation blowers, extruders, crushers, and mechanical presses. By enabling precise speed adjustment via frequency converters, operators can achieve substantial energy savings during partial-load conditions while eliminating mechanical shocks during soft starts. Whether retrofitting legacy fixed-speed machinery or integrating into new automated production lines, evaluating the drive parameters alongside the targeted 4 pole rpm rating ensures optimal process throughput, minimized system maintenance, and a significantly reduced total cost of ownership over the equipment's lifespan.

Main Technical Parameters

Production Details

Frame

• Compact and robust iron casting frame

• Universal IEC installation dimensions available

• Customizable outlook and dimensions

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Stator

• 99.9% pure copper winding for stator to ensure the output power and efficiency

• Excellent insulation system with 5 more processing flows

• All the windings are fitted in by handwork to ensure all slots are full and avoid any winding flaw.

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Rotor

• Aluminum casting rotor with high quality silicon steel rotor core to assure induction efficiency

• Well and precisely machined shafts with good capacity of strength and toughness

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Testing

• All motors must pass the piece testing before painting and packaging

• Type tests will be regularly performed for each series, more often for new developed series and variants.

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Package and delivery

• All motors will be packaged well before delivery

• Plastic cover inside, vacuum tin foil outer and then solid wood box

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Applications

Cement

Chemistry

Pump

Water conservation

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