Low cost modular induction motor targets safe-area pump and fan applications

2016-03-16 - Pre-engineered modular induction motor brings short delivery time, compact size, light weight and low purchase price for standard pump and fan applications that do not demand a highly specified motor.

Helsinki, Finland, March 16, 2016 — ABB, the leading power and automation technology group, is introducing a modular induction motor with delivery times several weeks shorter than those for more highly specified equivalents.

The short and on-time delivery is achieved using a pre-engineered platform in which all drawings and designs are standardized and pre-packaged. Customers can access 2D and 3D drawings using ABB’s DocStage; an online system for sharing and managing documentation during the order to delivery process.

“Our pre-engineered platform is mid-way between a custom made motor and an off-the-shelf motor,” explains Carl Nilsson, Global Product Manager for ABB’s large motors. “By having all documentation ready, we significantly cut the design stage. With our approach you decrease engineering times as we are able to source component parts that are already manufactured in our factories.”

“As part of our Next Level strategy, we are implementing solutions like this which help our customers gain efficiencies throughout the planning and purchase phases.”

Delivery time is controlled by offering a limited selection of accessories, such as temperature monitoring, vibration detectors and differential protection. Additional accessories would require more engineering time but are not always demanded by pump and fan applications.

The NMI motor, rated from 315 to 8,000 kW, in frame sizes 400 to 630, packs more power per kilogram which means the power required is achieved in a smaller frame size. A 4-pole, 3.5 MW motor, for example, weighs only eight tonnes, which is some 20 to 25 percent lighter than most comparable motors. The motor’s compact size and light weight reduces required install space and equipment to lift the motor on site.

The motor meets global minimum energy efficiency levels. It extends from 2 to 12 poles, with operating voltages up to 10 kV at 50 or 60 Hz. Ambient operating temperature is from -20 degrees to +40 degrees Celsius in the standard configuration, with optional designs down to -40 and up to +55 degrees Celsius.

The motor’s modular construction is scalable in that, for example, different bearing types can be easily fitted and air-to-water or air-to-air cooling can be adopted. The motors comply with the international standard IEC 60034 and pass very stringent testing procedures at each stage of production.

“The NMI motor uses durable materials with ABB’s high quality standards being retained throughout the design and manufacturer. The design is based on long experience of manufacturing motors. This variable-speed drive compatible motor has proven rotor and stator core technology and maintains a quality level of which ABB can be proud,” says Nilsson.

“This results in low noise and vibration, all of which enhances its reliability and reduces potential downtime, leading to high productivity levels. This lowers the cost of ownership: a low purchase price plus a low cost of running plus a low cost of not running.”

The NMI motor has the global backing of ABB’s lifecycle service network. The network offers round the clock assistance for motor spares, repairs or replacements as well as predefined maintenance programs for all lifecycle stages.

ABB (www.abb.com) is a leader in power and automation technologies that enable utility, industry, and transport and infrastructure customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in roughly 100 countries and employs about 135,000 people.

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