Wolong Electric America launches Quantum 500 Frame Medium Voltage Motor

Wolong Electric America, a global manufacturer of industrial motors for demanding applications, has expanded its Quantum motor platform with the launch of the Quantum 500 Frame Medium Voltage Motor. Created to replace a legacy design, the new motor can provide greater power density, structural rigidity, and installation flexibility

The Quantum 500 is suitable for a variety of industries and applications, including oil and gas, mining, pumping systems, petrochemical processing, and compression equipment. By modernising the platform, Wolong Electric America has aligned frame sizes, ratings, and footprints with current industry standards, enabling the Quantum 500 to operate as a drop-in replacement for existing Wolong Electric America installations.

Within the design is a significantly more rigid motor structure. The Quantum 500 shifts the motor’s natural frequency at least 15% away from the operating range, decreasing the risk of resonance under a variety of mounting conditions. This was achieved through increased frame and end-shield stiffness, a redesigned stator-to-frame interface, and a transition from a single-piece core to an interconnected multi-plate core, which enhances support and vibration control.

Additional structural improvements include a larger shaft diameter, expanded from 5.23 inches to 6.8, and reduced bearing center distances. These enhancements increase shaft stiffness and help the motor perform reliably on rigid bases, flexible skids, and other installation configurations typically encountered in API-influenced environments.

The Quantum 500 also introduces greater mechanical and installation flexibility. The motor is bidirectional, with a conduit box orientation that can be changed in the field from F1 to F2 without shop rework, which helps reduce downtime and simplify maintenance. Select frame sizes are available with deep flange designs that support cantilever mounting.

The Quantum 500 is available in WPI and WPII enclosures, supports a wide horsepower range across numerous pole configurations, and is designed for medium voltage operation below 7kV. Bearing systems are developed to meet industry guidelines with calculated bearing life exceeding 100,000 hours, while the motor insulation system supports an expected service life of up to 30 years under standard operating conditions.

The Quantum 500 Frame Medium Voltage Motor is suitable for a wide range of industrial applications, including pumps, compressors, mining equipment, and petrochemical processing systems, and can be customised to meet specific application requirements while maintaining standard footprints and mounting interfaces.