Abb high voltage rib cooled motors NXR and AXR provide a unique combination of small size, high power density, high reliability, low losses and easy maintenance. They are based on the successful, high performance rib cooled motor range, type HXR.

These multipurpose rib cooled motors offer high power density, easy configurability, and built-in serviceability. Versions specifically designed for use with variable speed drives are also available. VSD control generally means even higher efficiency and precise process control in both quadratic and constant torque applications.

ABB’s rib cooled motors are available as N-series general purpose motors (type NXR) and A-series engineered motors (type AXR).

N-series general purpose motors combine cost-efficient standardized designs and short lead times with safety, productivity, energy efficiency and reliability. They are targeted at applications where a highly customized motor is not needed.

The pre-engineered N-series complements ABB’s A-series of engineered motors, which are highly customized, fine-tuned to the customer’s precise needs, and offer a high degree of engineering flexibility.

ABB’s TEFC (totally enclosed fan cooled) motors, type HXR, are custom designed for an ideal match with each customer and application.

Typical applications include pumps, fans, blowers, compressors, conveyors, pulverizers, and even ship thrusters and AC generators. Abb High voltage rib cooled motors HXR are an excellent choice for driving pumps in power plants and process industries, as well as many other continuous duty applications.

Losses have been minimized by the effective use of material and optimized fan designs. Reduced core and fan losses mean there is no sharp drop in the efficiency curve at partial load.

ABB is constantly working to further improve the environmental characteristics of its products. The HXR range of engineered motors – featuring high efficiency, long service life and low noise level – are not only environmentally friendly but also cost less to run.

HXR motors also feature low noise levels, and are among the most silent high efficiency TEFC motors available. Most ratings produce less than 80 dB(A) when measured at one meter.