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Nidec Leroy-Somer announces launch of LSA 47.3 industrial alternator with increased performance and an optimized cooling system

by The Energy Intelligence
June 23, 2021
in Industry News
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The LSA 47.3 offers increased efficiency and starting kVA over its predecessor, and also benefits from the implementation of the lastest technologies developed by Nidec Leroy-Somer.

The LSA 47.3 delivers a rated power between 410 and 660 kVA at 50 Hz (495 to 825 kVA at 60 Hz). The 660 kVA rating (825 kVA at 60 Hz) was previously held by the LSA 49.3. Thanks to the cooling circuit optimization, the LSA 47.3 is now able to reach this power node for prime and demanding application. This is a significant benefit for generator set manufacturers as the same power is made available through a more compact machine.

The LSA 47.3 alternator features a SHUNT excitation system with a R250 regulator as standard. An AREP auxiliary winding excitation system with D350 digital regulator version is also available to improve transient performances and provide high overload capacities. A D550 digital regulator can also be used for grid connected applications. A Permanent Magnet Generator (PMG) excitation system is also available as an option.

The LSA 47.3 is fully interchangeable with the LSA 47.2 (shaft height and feet configuration), and can therefore be coupled with all diesel engines on the market for this power range. It is now available for orders.

The LSA 47.3 offers the following power nodes:

– 410, 455, 500, 550, 600, 660 kVA at 50Hz

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– 510, 570, 625, 690, 750, 825 kVA at 60Hz

 

This alternator is optimized for prime and demanding applications such as marine and cogeneration. It offers an efficiency of up to 95.7% at cos φ 0.8, which ranks it among the best in the category.

“The LSA 47.3 is an important step forward in our strategy to optimize our product range” said Wenbin Dingi, low voltage range product manager “The benefits of this new product are significative, with real improvements where it matters most: efficiency, power and starting kVA. In addition, the optimized cooling system we implemented means that hot spots are reduced inside the machine. Ultimately this means a better reliability and longer lifetime, which is essential for the applications all LSA alternators are built to support.”

With the LSA 47.3 introduction, the LSA 47.2 will soon be retired from the market, as well as the LSA 49.3 S4 (660 kVA).

Tags: LSA 47.3 alternatorMepaxNidec Leroy-SomerPermanent Magnet GeneratorSHUNT excitation systemWenbin Ding
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