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For information about ANSI/EASA AR100 or questions about the work on this standard, contact:
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Ya sea para garantizar la continuidad del servicio o por un fallo o por un funcionamiento inusual, las pruebas in situ de los motores son valiosas para garantizar que no existan condiciones de ensamblaje anormales después de la reparación del equipo, evitando así el desmontaje de equipos que están en buen estado. También confirman si la reparación se ha realizado satisfactoriamente.
This presentation covers what partial discharge is, how partial discharge damages insulation, and some testing methods.
Spectrum analysis is the primary tool for analyzing vibration problems. Yet, a lot of useful information can be acquired by tracking the vibration characteristics as power is disconnected from the machine.
Many service centers are unable to perform full-load testing of large DC machines. The good news is that there are specific tests that can be performed on a DC motor to verify the integrity of windings, the correct relative polarity of armature to interpoles, and proper running performance. This article explains specific tests that can help ensure a motor operates properly when the motor is installed.
Muchos centros de servicio no pueden realizar pruebas a plena carga en máquinas de corriente continua grandes, sin embargo, la buena noticia es que existen pruebas específicas que permiten verificar la integridad de los devanados, la polaridad relativa correcta entre la armadura y los interpolos, y el adecuado funcionamiento del motor. Este artículo explica pruebas específicas que pueden ayudar a garantizar que el motor funcione correctamente una vez instalado.
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?
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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Good Practice Guide to Maintain Motor Efficiency Based on the 2019 and 2003 Rewind Studies of premium efficiency, energy efficient, IE2 (formerly EF1) and IE3 motors
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