General guidance for performing brush seating or comutator reprofiling in the field.

Orientación general para realizar el ajuste del asiento de las escobillas o del conmutador en el campo.

This article addresses electrical testing and inspection of installed 3-phase squirrel cage motors. The main purposes of testing installed electric motors are condition assessment for continued service or to diagnose suspected faults. The emphasis here will be on diagnostic electrical testing and interpretation, as well as physical inspection key points. Note: Most of the tests and inspections described in this article can also be performed on 3-phase wound rotor motors, and induction and synchronous generators.

Este artículo cubre las pruebas eléctricas y la inspección de motores trifásicos jaula de ardilla que han sido instalados. Los principales objetivos al probar los motores en el sitio de trabajo son: Evaluar su condición para garantizar su funcionamiento continuo odiagnosticar presuntos fallos. Aquíharemos énfasis en las pruebas y enla interpretación de los resultados, asícomo también, en la inspección física de los puntos clave. Nota: La mayoría de las prue­bas descritas también se pueden realizar a los motores con rotor bobinado y en los gen­eradores sincrónicos y de inducción. 

Field service work can be challenging due to unfamiliar surroundings, potential hazards, and the lack of usual tooling. Chuck Yung's paper "Field Service Work, Techniques & Cautions," presented at the EASA Convention 2017, provides valuable insights into making field service work easier and safer. Yung emphasizes the importance of personal protective equipment (PPE), including Nomex clothing, steel toe footwear, hardhats, safety glasses, and goggles. He also highlights the necessity of lock out, tag out procedures to ensure safety when working on equipment that might start unexpectedly.

As service organizations, we should examine every phase of our projects and the related decisions we make in terms of SQDC (safety, quality, delivery and cost) every time and in that order.  One way to mitigate risks associated with these types of projects is quality planning.

The paper "Field Testing and Inspection of Electric Motors" by Tom Bishop, presented at the EASA Convention 2005, provides a comprehensive guide to the electrical testing and inspection of installed electric motors. The primary focus is on three-phase squirrel cage induction motors, but the paper also addresses wound rotor, synchronous, and direct current (DC) motors. The main purposes of testing installed motors are to assess their condition for continued service or to diagnose suspected faults.