Article
The phase balance test is a simple yet effective method for diagnosing some problems with existing windings and for inspecting new windings before resin treatment. Including thermography enhances diagnostic capabilities, making it a valuable addition to the testing process.
Article
La prueba de equilibrio de fases es un método simple y efectivo para diagnosticar algunos problemas en los devanados existentes y para inspeccionar devanados nuevos antes del tratamiento final. Incluir termografía mejora el diagnóstico, lo que es una adición valiosa para el proceso de prueba.
Article
In addition to seal oil, some submersibles have an oil filled stator cavity. The oil in the stator cavity very efficiently transfers heat from the stator winding and core, and especially from the rotor, to the pump casing where convection carries it to the pumpage in which the pump is submerged. While the specifications for seal oil are fairly flexible, stator cavity oil has more constraints.
The Power of Data: Using Step Counters to Optimize Layout
Article
Have you ever thought about using a step counter on your employees in a test setting? This idea can provide valuable data to help you understand how much movement your workers must perform daily due to the current workshop layout. By analyzing this data, you can identify inefficiencies in the layout that may not be immediately obvious.
Article
Además del aceite de sellado, algunas bombas sumergibles tienen una cavidad del estator llena de aceite. Este aceite transfiere de manera muy eficiente el calor desde el devanado y el núcleo del estator, y especialmente desde el rotor, hasta la carcasa de la bomba, donde la convección lo lleva al líquido de bombeo en el que está sumergida. Si bien las especificaciones para el aceite de sellado son bastante flexibles, el aceite de la cavidad del estator tiene más restricciones.
FREE for Members of EASA
Webinar recording
This presentation reviews procedures that explain how to identify unmarked leads of three-phase motors with one or two windings.
Article
This article looks at the installation and removal of quick detachable (QD) and taper lock pulleys.
Article
Pumps, compressors, fans and other types of mechanical movement are crucial to our industrial activities. Consequently, the health of these motors directly influences the operational reliability and longevity of the broader industrial ecosystem. Acknowledging this underscores the necessity for performing online health assessments of electric motors.
Article
En este artículo discutiremos dos tipos de poleas: poleas de desmontaje rápido (QD) y poleas con bloqueo cónico y se proporcionarán instrucciones para instalar y desmontar ambos tipos.
FREE for Members of EASA
Webinar recording
This presentation focusses on critical close fit tolerances and certain surface finish specifications.
Article
Hay una industria que ha estado reciclando silenciosamente desde antes del comienzo del siglo pasado. Así es: Más de 100 años de reciclaje. ¿De qué industria se trata? Es nuestra industria: La reparación de máquinas eléctricas.
Article
There is one industry that has been quietly recycling since before the start of the previous century. That’s right – over 100 years of recycling. What industry is that? It’s our industry – electrical equipment repair.
Article
The Electrical Apparatus Service Association (EASA) stands as the ultimate team, empowering its members with extraordinary abilities. Through shared best practices, high standards and mutual support, EASA’s international community transforms its members into industry superheroes, ready to tackle any challenge.
FREE for Members of EASA
Webinar recording
When a core loss test reveals localized hot spots, or visual inspection identifies physical damage, the ability to repair the damage in a cost-effective manner means the difference between repair or replacement.
Article
EASA will soon be releasing a new Motor Stats feature for both the AC Motor Verification & Redesign and Motor Rewind Data software to assist with determining if the data is reasonable for the machine’s nameplate ratings and core size.
Article
When handling motors, lifting devices are often needed, whether they be cranes, forklifts or otherwise. Given the risks inherent to lifting, EASA members must exercise caution and ensure our teams are well versed in proper rigging techniques.
Article
Al manipular motores, a menudo se necesitan dispositivos de izaje, ya sean grúas, montacargas o de otro tipo. Dados los riesgos inherentes al izaje, los miembros de EASA debemos actuar con precaución y asegurarnos que nuestros empleados conozcan bien las técnicas de manipulación adecuadas.
Article
EASA pronto lanzará una nueva función de Estadísticas de motor para el software AC Motor Verification & Redesign y Motor Rewind Data para ayudar a determinar si los datos son razonables para las clasificaciones de placa de identificación y el tamaño del núcleo de la máquina.
Webinar recording
This presentation provides a high-level overview of the program and is intended for anyone wanting to learn more about the ERT program.
Article
Cuando la resonancia causa una vibración excesiva, es importante identificar la frecuencia natural y la forma modal de la vibración. Una simple prueba de impacto (bump test), realizada a máquina parada, es un buen primer paso para identificar la frecuencia natural.
Article
When resonance does cause excessive vibration, it is important to identify the natural frequency and the mode shape of the vibration. A simple bump test, conducted with the machine not running, is a good first step in identifying the natural frequency.
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Webinar recording
Learn how to effectively use EASA's live, ever-expanding online database of more than 250,000 windings.
Article
With the advent of solid-state electronic variable frequency drives (VFDs) in the late 1980s, it was found that the windings of motors used on VFDs failed more frequently than when powered by a utility (sine wave) supply. By the turn of the century, motor manufacturers had gained a better understanding of how VFDs affected motor windings. This article describes the materials and methods associated with inverter duty windings.
Article
Con la llegada de los variadores de frecuencia electrónicos (VFD) de estado sólido a fines de la década de 1980, se descubrió que los bobinados de los motores que funcionaban con VFDs fallaban con más frecuencia que al estar alimentados con la energía convencional (onda sinusoidal). A principios de siglo, los fabricantes de motores habían comprendido mejor cómo los VFD afectaban los devanados del motor, y al igual que los proveedores de materiales electro, aislantes habían desarrollado materiales y métodos para mejorar la confiabilidad de los devanados de los motores alimentados con VFDs. En este artículo, describiremos los materiales y métodos asociados con los devanados inverter duty.
Article
This article explains in layman’s terms what electromechanical professionals refer to as circulating currents, why they exist in three-phase electric motors and to offer practical solutions.
Article
We all have them in our pockets – powerful, high-quality video recording capabilities and tools within our smartphones! Here are a few tips on how to successfully capture content to assist us in the creation of business-related videos.
Article
Este artículo es explicar en términos sencillos a qué se refieren los profesionales de la electromecánica como corrientes circulantes, por qué existen en los motores eléctricos trifásicos y ofrecer soluciones prácticas.
Article
The insulation system chosen for any rewind should be suitable for the application, the voltage class, and the winding process capability of the service center. In most cases, adherence to “equal to or better than” selection is a good practice.
Article
El sistema de aislamiento escogido para cualquier rebobinado debe ser el adecuado para la aplicación, el voltaje y la capacidad del proceso de rebobinado del centro de servicio. En la mayoría de los casos, seleccionar una opción "igual o mejor" es una buena práctica.