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Tyler Voss Membership & Communications Specialist+1 314 993 2220tvoss@easa.com
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For service professionals working with large electric motors and generators, machines with voltage ratings 5 kV and higher can be vulnerable to invisible threats of partial discharge (PD). Corona and PD activity have long been a challenge to detect before failure occurs. Traditionally, detecting these issues required indirect methods like radio interference voltage (RIV) testing, ultrasonic detection or offline insulation tests. But recent advances in partial discharge imaging—sometimes called corona cameras—are giving engineers and technicians a powerful new tool: the ability to see electrical discharge activity directly and in real time.
Para los profesionales que trabajan con grandes motores y generadores eléctricos, las máquinas con tensiones nominales de 5 kV o superiores pueden ser vulnerables a amenazas invisibles de descargas parciales (DP). Detectar la actividad corona y las DP antes de que se produzca un fallo ha sido un desafío durante mucho tiempo. Tradicionalmente, detectar estos problemas requería métodos indirectos como pruebas de voltaje de radio interferencia (RIV), detección ultrasónica o pruebas de aislamiento a máquina parada. Sin embargo, los recientes avances en imágenes de descargas parciales, a veces llamadas cámaras corona, brindan a ingenieros y técnicos una nueva y poderosa herramienta: la capacidad de ver la actividad de descargas eléctricas directamente y en tiempo real.
The video provides a comprehensive guide on performing a single-phase rotor test on a three-phase squirrel cage motor to check for open rotor bars.
Modern testing devices now have more capability than ever. Modern test equipment has gained multi-function testing capability. They even package the tests into colorful professional reports. With that being said, do we still need single function equipment to accurately diagnose and perform high quality inspections on electromechanical equipment?
Los dispositivos de prueba modernos cuentan con más capacidades que nunca. Los equipos de prueba modernos también han adquirido la capacidad de realizar pruebas multifunción. Incluso compilan el resultado de las pruebas en informes profesionales a todo color. Dicho esto, ¿seguimos necesitando equipos monofunción para diagnosticar con precisión y realizar inspecciones de alta calidad en equipos electromecánicos?
This webinar goes through some data verification and redesign examples using the Motor Stats view within EASA’s AC Motor Verification & Redesign software to learn what it tells us and what it doesn’t tell us about our data.
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.
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.
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.
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.
This 40-page booklet provides great advice for obtaining the longest, most efficient and cost-effective operation from general and definite purpose electric motors.
This booklet covers topics such as:
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The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.
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Recommended Practice for the Repair of Rotating Electrical Apparatus This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.
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Revised May 2024 The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.
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