ABB launches new generation of NEMA motor, offering high energy efficiency and reliability in harsh conditions
Published by Sol Klappholz,
Assistant Editor
World Cement,
BB has developed the new generation AMI 5800 NEMA modular induction motor to offer exceptional energy efficiency and reliability in demanding applications such as pumps, compressors, fans, extruders, conveyors and crushers. Rated for a power output of up to 1750 HP, the AMI 5800 offers the capability for a high degree of modularity and customisation to suit both new build and upgrade projects in a wide range of industries including chemical oil and gas, conventional power generation, mining and cement and metals.
The AMI 5800 motor is a true NEMA design that builds on ABB’s technology leadership in the North American market to meet both electrical performance requirements and mechanical mounting standards. A key feature is a high-strength welded steel frame typically found only in motors with larger frame sizes. This lowers stress on the motor while mitigating vibrations and resonance to ensure reliable operation in harsh conditions with a design life of 25 years or 20 000 starts.
A further important advantage of the AMI 5800 is a shorter bearing to bearing span compared with previous models. This innovative feature improves performance at high speeds and enables the motor to be used as a simple drop-in replacement to upgrade existing equipment.
Sam Patrick, ABB Product Manager Large Motors & Generators, says: “We have engineered the AMI 5800 motor to meet customer requirements for high energy efficiency and reliability as well as sustainable manufacture and use. Its modular design in terms of cooling methods, bearings, shaft extensions and terminal boxes also provides the flexibility to match the North American installed base. That makes the AMI 5800 ideally suited for both upgrading existing installations and next generation designs no matter how harsh the environment it will be operating in.”
The majority of regular AMI 5800 designs not only meet but exceed North American standards for energy efficiency. Further customisation will allow some models to operate above the IE4 equivalent level of energy efficiency while meeting NEMA electrical performance standards.
The new motor is configured for optimal airflow, meaning that it will run as cool as possible, whether in an open-air installation or completely enclosed with a cooler. The time-tested MICADUR® insulation system makes the motor suitable for starting high inertia loads direct online (DOL) while it is also an ideal partner for variable speed drives (VSDs).
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