New NEMA AC Motors for Hazardous Area Locations

Press Release Summary:

  • NXR 7100 is class I div 2 capable and offers more HP per pound than conventional TEFC motors but with small frame size in some power ratings
  • Available with up to an IP56 rating for protection against contaminates and dust ingress
  • Internal cooling loop circulates air inside the motor, moving heat from the rotor to the frame, where an external fan blows air over the frame to remove the heat

Original Press Release:

ABB's New NXR Above NEMA AC Motors Offer Power-dense Design for Industrial Duty Solutions

The NXR 7100 Above NEMA motors deliver an average of 15 percent more power over conventional fan cooled motor designs. 

ABB's Above NEMA (ANEMA) NXR 7100 motors offer more HP per pound than conventional TEFC (totally enclosed fan cooled) motors but with a smaller frame size in some power ratings. This helps save space, up to 8 inches in overall length in some cases, which enables more compact installations for industrial applications. The NXR 7100 is Class I Div 2 capable, making it ideal for hazardous area locations.

The new NXR motors also offer improved cooling, a critical factor to extend the life of the motor. An internal cooling loop circulates air inside the motor, moving heat from the rotor to the frame, where an external fan blows air over the frame to remove the heat.

"The new cooling configuration offers a more thermally equalized motor, eliminating hot spots that have been seen in TEFC motors," says Charles Blankenship, Large AC Motor Product Manager, ABB. "Better cooling reduces the thermal stresses on the insulation system, which helps improve the motor's longevity."

As the main terminal box and auxiliary box can be mounted in several positions, installation and maintenance are easy. This also means fewer spares are needed, which saves money. The rigid frame increases stability so that the motor can meet NEMA vibration requirements.

NXR 7100 motors extend the power range of the existing NXR 5000 and NXR 5800 up to 1750 Hp while offering the same great features. These motors are available with up to an IP56 rating, for protection against contaminates and dust ingress.

ABB (NYSE: ABB) is a pioneering technology leader with a comprehensive offering for digital industries. With a history of innovation spanning more than 130 years, ABB is today a leader in digital industries with four customer-focused, globally leading businesses: Electrification, Industrial Automation, Motion, and Robotics & Discrete Automation, supported by its common ABB Ability™ digital platform. ABB's market leading Power Grids business will be divested to Hitachi in 2020. ABB operates in more than 100 countries with about 147,000 employees.

ABB Motion keeps the world turning, while saving energy every day. Our pioneering drives, motors, generators, mechanical power transmission products and integrated digital powertrain solutions are driving the low-carbon future for industries, cities, infrastructure and transportation. Through our global presence we are always close to our customers. We help them optimize energy efficiency, improve safety and reliability and achieve precise control of their applications. www.abb.com/motors www.abb.com/drives

For More Information, Please Contact:
Media Relations
Tracy Long
Phone: + 1 479 648 5769
Email: tracy.long@us.abb.com

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