Vertical hollow shaft pump motor compliant with NEMA Premium standard for efficient energy savings
Our NEMA standard VHS motors, compliant with NEMA premium standard for efficient energy savings, is primarily designed for the US market, meeting strict American technical and firefighting requirements. This type of motor is designed with super premium efficiency and features waterproof, dustproof, and corrosion-resistant properties to withstand harsh conditions in deep well pumps. Additionally, our NEMA Standard VHS Motor is highly efficient and energy-saving, reducing energy consumption and suitable for urban drainage, agricultural irrigation, and industrial water supply.
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Standard: NEMA MG-1, MG-13, IEEE-841
Certification: CE, CSA, UL
Rated voltage: 230V/460V or as required
Rated frequency: 60Hz
Output power: 7.5HP-600HP
Duty: continuous duty SF1.0 (optional SF1.0-1.3)
Frame: 213TP - 5807P
Protection degree: IP54/IP55
Cooling method: IC411
Insulation class: class F
Temperature rise: class B temperature rise of stator winding
Efficiency: NEMA Premium Efficiency, Department of Energy Efficiency Certification #CC002A
Key Features
Class F insulation with Class B temperature rise assessment ensures reliable performance in demanding conditions.
Operates with a 1.15 service factor (sinusoidal power supply), thriving at ambient temperatures up to 60°C and altitudes up to 3,300 feet.
230/460V motors support part-winding start at 230V, while 380–415V motors enable star/delta starting for seamless integration.
Features a steel ball non-reverse ratchet to prevent reverse rotation, enhancing operational safety.
Modular installation
Compact vertical design minimizes footprint, with the pump reaching deep wells up to hundreds of meters, reducing installation costs by submerging the unit underwater.
Large-window pump base streamlines maintenance and packing replacement.
Adjustable performance
Adjustable nut optimizes impeller axial clearance for peak efficiency.
Customizable materials and processes, like epoxy-coated flow paths or silica sol precision casting, adapt to diverse operational needs.
Mexican client purchased 8 NEMA standard VHS motors.
Designed for deep-well turbine pumps, our three-phase asynchronous squirrel-cage rotor motors excel in handling significant axial forces, ensuring reliable performance for vertical solid-shaft pump systems.
Installation Instructions
Screw the coupling bolt into the pump coupling, ensuring it remains vertical.
Remove the motor’s top cover.
Clean the mounting surface, then vertically align the motor over the pump shaft onto the base flange support. Secure with fastening bolts.
Firmly connect the motor to the pump shaft coupling.
Inject high-quality bearing lubricant (viscosity 13–16.5 mm²/s) through the motor’s oil fill port.
Add lubricant per the motor’s label, typically below half the sight window level, unless specified otherwise.
Excess lubricant may flow into the motor via the shaft sleeve or be flung out during rotation—this does not affect normal operation, so clients can use with confidence.
After verifying the installation, replace and tighten the motor’s top cover.
Operational Notes
Equipped with thermal and short-circuit protection devices; set current according to the nameplate.
If frequency deviates by 1% or voltage by 5% from nameplate values, continuous rated power cannot be guaranteed.
Whether loaded or not, the motor must not produce irregular sounds or vibrations. Operating temperature must not exceed 95°C.
Our AC motors are designed to convert mechanical energy and alternating current (AC) electrical energy. Thanks to the significant advancement in AC power systems, AC motors have become the most commonly used type of motors. Compared to DC motors, AC motors are simpler in structure, easier to manufacture, and more robust since they do not have commutators.
Our high voltage motors are the perfect choice for any configuration with power ranging from 200kW to 15000kW, speeds from 500rpm to 3600rpm, and torque up to 26000Lb. Our motors comply with IEC and NEMA standards and can be equipped with various cooling systems, explosion-proof protection, and optional protection levels up to IP66.
Our explosion-proof motors can meet your specifications, quality, power, and efficiency requirements. We adhere strictly to specifications and outperform standard requirements. By choosing us, you will benefit from our expertise and experience to find the motor products that best meet your needs.
Your trusted source for electric motors and metallurgical equipment
Since our beginning in 2010 we have focused on manufacturing and sales of metallurgical equipment and we continually improve our products and service. Verified during over a decade of activity, we gradually realized the significant impact of large electric motors on the quality of metallurgical equipment. So, we expanded our factory to increase the production and sales of electric motor products.
Today, we are a company that primarily offers electric motors, such as deep well pump motors, DC motors, AC motors, high-voltage motors, and explosion-proof motors. Additionally, we also offer metallurgical equipment, such as induction furnaces, smelting furnaces, and electric arc furnaces, which are mainly used in the production and processing of metal materials, including smelting, casting, and rolling processes.
Shanghai Electrical Machinery