Medium Voltage
Medium voltage electric motors are engineered for the most demanding industrial and utility applications, where efficiency, torque, and reliability must scale with power.
Operating at 2300 V, 4160 V, and 6600 V, these motors deliver thousands of horsepower while minimizing current draw — ideal for refineries, mining, pulp and paper, water treatment, and energy infrastructure.
Designed for continuous duty and compliance with NEMA MG-1, IEEE 841, and CSA C390 standards, these motors are available in Totally Enclosed Fan Cooled (TEFC), Weather-Protected (WPI/WPII), and Explosion-Proof (TEXP) enclosures.
Voltage Classes
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Typical Specifications
Specification Range / Detail
Voltage 2300 V / 4160 V / 6600 V (Medium Voltage AC)
Horsepower Range 200 – 5000 HP +
Speed (RPM) 900 / 1200 / 1800
Enclosures TEFC / WPI / WPII / TEXP
Mounting Options Horizontal / Vertical P-Base
Frame Sizes 5000 Frame and larger
Cooling Systems IC411 (TEFC) / IC01 (Open) / IC611 (Heat-Exchanger)
Standards NEMA MG-1, CSA C390, IEEE 841
Advantages of Medium Voltage Motors
High Power, Low Current: Fewer conductors, smaller switchgear, and reduced energy loss.
Extended Cable Runs: Suitable for large facilities and remote drive systems.
Improved Efficiency: Meets or exceeds IE3/IE4 levels at large scale.
Reduced Infrastructure Costs: Eliminates need for step-up transformers in many applications.
VFD Integration: Compatible with medium-voltage drives for variable-speed control.
Enclosure Options
Mounting and Cooling Configurations
Horizontal Foot-Mounted Standard for compressors and pumps.
Vertical P-Base For deep-well pumps and agitators.
Air-to-Air (TEAAC) Closed-loop cooling for dusty environments.
Air-to-Water (TEWAC) For high-power motors with limited airflow.
Typical Applications
Refineries and petrochemical facilities
Mining and mineral processing
Water and wastewater treatment plants
Pulp and paper mills
Power generation and utilities
Marine propulsion and offshore platforms
Performance and Compliance
All medium-voltage motors are:
Custom-balanced and dynamically tested before shipment.
Equipped with RTD temperature sensors and bearing thermistors.
Offered with insulated bearings and shaft grounding rings for VFD duty.
Certified to NEMA, CSA, and IEEE standards for North American compliance.
575 V vs Medium Voltage
Request a Quote or Spec Sheet
Need a medium-voltage motor for your plant or OEM project?
Our specialists can assist with voltage selection, enclosure configuration, and VFD compatibility to meet your exact operating environment.
Request a Quote or Request Spec Sheet for full specifications, lead times, and technical consultation