Many brazing failures can be traced to a short list of preventable mistakes. Poor cleaning, improper heating, excessive joint gaps and incorrect use of flux are among the most common causes of weak or unreliable braze connections.

Muchos fallos en la soldadura fuerte se deben a una serie de errores evitables. Una limpieza deficiente, un calentamiento inadecuado, holguras excesivas en la unión y el uso incorrecto del fundente son algunas de las causas más comunes de uniones débiles o poco fiables.

Are you struggling with training new technicians to take data and rewind DC armatures properly? This recording covers the critical skill gap in our industry for qualified DC armature technicians.

Revisit EASA's 2026 Convention & Solutions Expo by buying access to recordings of the general sessions and education events streamed from EASA's website! These recordings provide just over 32 hours of training. Downloadable PDFs of slides and technical papers are included!

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.

This presentation covers two types of pulleys (quick detachable and taper lock) and provides instructions for installing and removing both types.

The typical customer has an expectation of sending in their equipment to a service center to get it repaired correctly. Whatever the process, service centers should capture the “As Received” information accurately. This article will point out some pitfalls that can be avoided by taking the right steps during the “As Received” process.