YVF355M2-8 Three-phase Asynchronous Class H Insulation Motor 132kw

Brief Introduction

The SIMO YVF series is a purpose-built variable-frequency variable-voltage (VVVF) three-phase asynchronous motor, engineered for demanding variable-speed industrial drive applications. The representative model YVF355M2-8 delivers 132 kW rated output at 380 V, drawing 264 A and producing 1681 N·m of torque at 740 r/min. As a class h insulation motor (temperature class 180°C), it withstands the elevated thermal stress generated by inverter harmonic currents, ensuring reliable long-term operation under continuous variable-frequency conditions. Manufactured by Xi'an Simo Motor Co., Ltd., the motor adopts IC416 independent forced-ventilation cooling, IP55 protection, and S1 continuous duty rating, making it suitable for dusty, splash-prone workshop environments where non-stop production is required. It supports a wide frequency regulation range of 50–100 Hz, with delta (Δ) winding connection and IM B3 foot-mounted installation for flexible mechanical integration. Both drive-end and non-drive-end bearings are specified as 6322/C3, providing ample radial clearance to accommodate thermal expansion and reduce vibration under heavy radial loads. The motor weighs 1534 kg and complies with the JB/T 7118 industry standard, with CE certification enabling deployment in overseas engineering projects.

At the core of its performance is the class h insulation motor design, which allows a maximum winding temperature of 180°C - a decisive advantage when the motor is powered by pulse-width-modulated (PWM) inverter output. Unlike standard F-class motors, the H-class insulation system resists premature aging caused by voltage spikes and harmonic heating, significantly extending winding service life and reducing unplanned downtime. The IC416 cooling configuration employs a separate constant-speed cooling fan, guaranteeing consistent heat dissipation even at low operating speeds where a shaft-mounted fan would lose effectiveness. This solves the common overheating problem faced by variable-frequency motors during extended low-speed, high-torque operation. The 8-pole configuration (740 r/min at 50 Hz) naturally delivers high starting and running torque, ideal for driving high-inertia loads such as large fans, centrifugal pumps, conveyors, crushers, and metallurgical auxiliary equipment. Across the 50–100 Hz speed range, the motor maintains stable torque output and balanced mechanical performance, seamlessly matching mainstream brand frequency converters for closed-loop or open-loop speed control systems.

For global industrial customers and system integrators seeking a durable, high-efficiency variable-speed drive solution, the YVF series class h insulation motor delivers compelling total cost of ownership. Its H-class insulation system provides a generous thermal margin, lowering winding failure rates and cutting maintenance and replacement costs over the equipment lifecycle. The robust cast-iron frame, precision-balanced rotor, and C3-clearance heavy-duty bearings combine to minimize noise and vibration, while the IP55 enclosure protects internal components from dust ingress and water splash in harsh industrial settings. Each unit undergoes rigorous factory testing before delivery, and the CE mark confirms compliance with European safety and electromagnetic compatibility directives. Whether supporting new construction projects, upgrading existing fixed-speed motor systems, or replacing imported equivalents, the SIMO YVF VVVF three-phase asynchronous motor provides reliable, energy-efficient, and thermally robust drive power - a trusted choice for pumps, fans, mining, sugar processing, water treatment, and general machinery applications worldwide.

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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