While air-to-air cooled machines (WPII or TEAAC) dominate the market, water-to-air cooling is typical for motors rated above 5,000 kW (6,700 hp) or where water is readily available, or with specific applications such as wind generators. Service centers encounter two configurations: external tube heat exchangers and integral water jacket heat exchangers.

While there are mechanical concerns to consider as well, this article covers only the drying of the winding. The techniques listed here broadly cover stator windings, armatures, field poles, wound rotors and rotor poles.

Si bien las máquinas con refrigeración aire-aire (WP II o TEAAC) dominan el mercado, la refrigeración agua-aire es habitual en motores con potencias superiores a 5000 kW (6700 hp), en aquellos casos en los que el agua está fácilmente disponible, o en aplicaciones específicas, tales como los generadores eólicos. Los centros de servicio se encuentran con dos configuraciones: intercambiadores de calor con tubos externos e intercambiadores de calor integrales de camisa de agua. 

El secado de devanados en campo presenta desafíos únicos en comparación con el secado en un centro de servicio.  Si bien también existen aspectos mecánicos que deben tenerse en cuenta, este artículo se centra exclusivamente en el secado del devanado. Las técnicas que se enumeran a continuación abarcan, en términos generales, los devanados de estator, las armaduras, las bobinas de campo, los rotores bobinados y los polos de un rotor.

Goals without action are just wishes. Learn the structured process that transforms aspirations into achievements and discover how to align your daily actions with your long-term vision.

The new Motor Winding Workbench is now live and replaces EASA’s Motor Winding Database and the AC Motor Verification & Redesign program (Version 4). Visit workbench.easa.com (log in required) to access the new app that is included FREE as part of your EASA membership! 

This presentation covers what partial discharge is, how partial discharge damages insulation, and some testing methods.   

In our industry, we have a lot of terms that are almost the same. And we even use the same exact terms for multiple unrelated things. This article provides examples of why using proper terminology is so important.

The real question for EASA members is not whether AI will play a role in their business, but whether they will take advantage of it early or struggle to catch up later. That is exactly why the AI sessions during the 2026 Convention & Solutions Expo are so important.

This article explains the role, testing, and precise placement of thermal protectors in explosion proof motors to maintain certification and ensure workplace safety.