EQP Global® 661

The Toshiba EQP Global® 661 motor is specifically designed for constant speed or inverter duty air-to-air heat exchanger applications found in petrochemical and chemical processing environments. This totally enclosed fan cooled motor meets API 661 specification and offers a 50,000-hour bearing life for belted applications. Built to meet or exceed IEEE® Std. 841-2021 requirements, it also features an IP56-rated enclosure and a corrosion-resistant severe duty epoxy paint system, allowing it to withstand demanding operating conditions, including 100% humidity.

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Overview

Application Specific Design

Suitable for horizontal and vertical mounting, the 661 motor features IP56 protection and corrosion-resistant epoxy paint finish, which enhance durability in Class I, Div 2 A-D environments.

 

Vertical Lifting Provisions

This feature allows for ease of installation in both vertical shaft-up and vertical shaft-down mounting applications.

 

Shaft Strength

High-strength 4140 shaft steel offers exceptional toughness, and wear resistance, making it ideal for heavy-duty applications.

 

Ingress Protection

Labyrinth seals on both the DE and NDE of the shaft combined with an umbrella rain slinger on the DE and gasket sealant between the frame and bearing brackets provide IP56 protection, which delivers reliable defense against 100% humidity.

 

Multi Drain Provisions

Multiple drain provisions on the brackets, frame, and conduit box provide effective drainage in all vertical and horizontal mounting positions.

 

Inverter Duty Rated

Designed for use with an adjustable speed drive for energy savings at optimum fan speed, the EQP Global 661 motor features an insulation system that meets NEMA MG1 Part 31 standards and is engineered to withstand sharp voltage spikes up to 2000 V in 0.1 μs. It also offers versatile speed ranges of up to 60:1 Variable Torque and 10:1 Constant Torque.

Insulated Bearings

  • An electric motor operating on an adjustable speed drive is at risk for premature bearing failure caused by stray currents. Experience indicates using insulated bearings on both ends of the motors is the most effective way to protect the motor from destructive currents. A high level of bearing protection is especially beneficial in applications where motor maintenance and replacement are difficult.
  • Extended Horsepower Capability

  • Extended horsepower capability allows a smaller motor to run at a higher horsepower than its baseline depending on the application requirements. This provides motor users potential cost savings while achieving the same motor performance.
  • Insulation with Wide Thermal Capability

  • Critical cooling motors utilize many Class H insulation materials in its winding designs, which provides increased thermal protection. These motors operate with a very low temperature rise at rated conditions, giving them a wide thermal margin and extended motor life.
  • Low Vibration

  • A vibration level exceeding NEMA MG1 requirements provides stability and durability by prolonging motor and bearing life and helping to reduce downtime.
  • Specifications

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