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Articles in Industry Publications

Submersible Pump Stator Oil Guidelines

  • November 2024
  • Number of views: 674
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.

Enhancing Efficiency in an Electric Motor Workshop: An Unconventional Approach

The Power of Data: Using Step Counters to Optimize Layout

  • November 2024
  • Number of views: 541
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.

Pautas Para el Aceite del Estator de las Bombas Sumergibles

  • November 2024
  • Number of views: 404
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.

Identifying Unmarked Leads of Three-Phase Motors

  • October 2024
  • Number of views: 1184
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.

Installing and Removing Pulleys

  • October 2024
  • Number of views: 1304
Article

This article looks at the installation and removal of quick detachable (QD) and taper lock pulleys.

Optimizing Asset Performance: The Critical Role of Electrical Signature Analysis in Asset Health Assessment for Electric Motor Systems

  • October 2024
  • Number of views: 907
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.

Instalando y desmontando poleas

  • October 2024
  • Number of views: 943
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.

Pump Close Tolerance Fits

  • September 2024
  • Number of views: 1782
FREE for Members of EASA
Webinar recording

This presentation focusses on critical close fit tolerances and certain surface finish specifications.

Miembros de EASA: Recicladores silenciosos

  • September 2024
  • Number of views: 698
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.

EASA Members: The Quiet Recyclers

  • September 2024
  • Number of views: 587
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.

Miembros de EASA: Recicladores silenciosos

  • September 2024
  • Number of views: 411
Article

The Superpower of the EASA International Community

  • September 2024
  • Number of views: 558
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.

Core Repair Tips To Reduce Core Loss

  • August 2024
  • Number of views: 1488
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.

Motor Stats Feature to be Released for AC Motor Verification & Redesign (and Motor Rewind Data)

  • August 2024
  • Number of views: 1382
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.

Proper Rigging Techniques and Challenges in Motor Repair

  • August 2024
  • Number of views: 2005
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.

Técnicas de aparejamiento de cargas y retos en la reparación de motores eléctricos

  • August 2024
  • Number of views: 816
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.

Se lanzará la función de estadísticas Motor Stats para el programa AC Motor Verification & Redesign (y el Motor Rewind Data)

  • August 2024
  • Number of views: 719
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.

Electromechanical Repair Technician (ERT) Certificate Program Introduction

  • July 2024
  • Number of views: 1170
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

Cómo efectuar una "prueba de impacto" para resonancia

  • July 2024
  • Number of views: 1931
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.

How to Conduct a “Bump Test” for Resonance

  • July 2024
  • Number of views: 2792
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.

Using EASA’s Motor Rewind Data – Version 4

  • June 2024
  • Number of views: 2509
FREE for Members of EASA
Webinar recording

Learn how to effectively use EASA's live, ever-expanding online database of more than 250,000 windings.

Inverter Duty Three-Phase Motor Windings

  • June 2024
  • Number of views: 2228
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.

Devanados para motores trifásicos Inverter Duty

  • June 2024
  • Number of views: 1658
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.

Circulating Currents: Causes and Solutions

  • May 2024
  • Number of views: 2883
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. 

How to Successfully Capture Video Content: Use your Smartphone!

  • May 2024
  • Number of views: 1738
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. 

Corrientes Circulantes: Causas y Soluciones

  • May 2024
  • Number of views: 2404
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.

Choosing the Right Insulation System for Medium Voltage Rewinds

  • April 2024
  • Number of views: 3247
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.

Escogiendo el sistema de aislamiento adecuado para rebobinados de media tensión

  • April 2024
  • Number of views: 2735
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.

Converting Vibration Units: Process and Solutions

  • March 2024
  • Number of views: 1935
Article

As we communicate internationally, language barriers persist. In the technical fields, the metric-imperial units clash is slowly diminishing. Many vibration analysts are “bilingual” in that respect and are comfortable using either system. But for more casual users who may only encounter vibration data in regard to meeting specs, unfamiliar vibration amplitude units can be a challenge. 

Convirtiendo Unidades de Vibración: Proceso y Soluciones

  • March 2024
  • Number of views: 1691
Article

A medida que nos comunicamos internacionalmente, persisten las barreras del idioma y en el campo técnico, el choque entre unidades métricas y en pulgadas está disminuyendo lentamente. Muchos analistas de vibraciones son “bilingües” y se sienten cómodos utilizando cualquiera de los sistemas. Pero para los usuarios ocasionales que tal vez solo encuentren datos de vibración con respecto al cumplimiento de las especificaciones, las unidades de amplitud de vibración desconocidas pueden ser un reto.