Toshiba’s General Purpose Weather-Protected Type I (WPI) motor series includes ventilation openings with overhanging covers for efficient cooling and protection against environmental hazards. Built with robust materials and corrosion-resistant coatings, these motors offer durability and ease of maintenance. They are designed to meet the industry’s needs for energy conservation and reliability in indoor environments. These customizable motors are ideal for various applications, including power generation, water and wastewater treatment, oil and gas, and more.
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- Medium Voltage Open Enclosure
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- Weather-Protected Type I
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Overview
Weather-Protected Design
Ideal for large, well-ventilated rooms. Fresh air is drawn in by high-performance fans, cooling the core and coils before being exhausted.
Fan Design
3-D fluid analysis is used to model airflow and optimize fan design, providing maximum airflow with reduced frictional losses.
Frame Construction
Finite element analysis is utilized to determine optimal rigidity. The design reduces vibration by maintaining stator-to-frame concentricity.
Customizable
Built to meet application requirements, backed by U.S.-based application engineering and support for a precise fit and reliable performance.
Thermal Protection
Embedded 100 Ω platinum stator RTDs, two per phase terminated in an auxiliary box, help protect the motor’s insulation system from excessive heat and unsafe operation.
Humidity Protection
120V space heater is included in all frames.
Vibration Provisions
Designed for mounting vibration sensors (1/4” NPT) on each bearing bracket.
Drive Duty Compatibility
The insulation meets NEMA MG1 Part 31 standards. It can be paired with a UL-Listed Medium Voltage Drive, which features a motor-friendly multiphase neutral point clamped output.
Rotor Options:
Aluminum Rotor
High-pressure diecast aluminum rotors offer a lightweight, cost-effective solution. Low rotor inertia improves acceleration and deceleration, while excellent thermal conductivity enhances cooling. Corrosion-resistant properties increase reliability in harsh environments.
Copper Bar Rotor
Copper bar rotors deliver high electrical conductivity for improved efficiency and reduced losses. They provide higher starting torque and operate at lower temperatures, making them ideal for heavy-duty, high-performance applications where thermal stability and energy efficiency are critical.
Insulated Bearings
Extended Horsepower Capability
Insulation with Wide Thermal Capability
Low Vibration
Specifications
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