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Cuando se trata de motores ¿Qué tan caliente es caliente?

Las temperaturas muy altas afectan la vida útil del motor

  • June 2011
  • Number of views: 445
  • Article rating: No rating

Jim Bryan
Especialista de Soporte Técnico de EASA (retirado)

Frecuentemente escuchamos decir a nuestros miembros, que uno de sus clientes le ha informado que un motor que había sido reparado, ahora se calienta. Nosotros siempre les preguntamos ¿Qué tan caliente? y por lo general responden “Bueno, no puedo mantener mi mano sobre él”.

Vamos a pensar un minuto en esta respuesta. La mano del ser humano típico, puede soportar una temperatura entre 60-65°C (140 -150°F), dependiendo de las callosidades, el dolor que pueda tolerar, cuantas personas estén observando, etc. Recuerden este número, mientras discutimos las temperaturas típicas de funcionamiento de un motor.

La norma NEMA MG1-2009 12.43 (ver Figura 1), define el aumento de temperatura para los motores a una temperatura ambiente máxima de 40 °C.

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Getting The Most From Your Electric Motors

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EASA Technical Manual

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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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ANSI/EASA AR100-2015

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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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EASA AR200

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Guide for the Repair of Power and Distribution Transformers
This document establishes guidelines for each step of the repair of power transformers, describing record keeping, tests, analysis, and general guidelines for the repair of power transformers.

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