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Electrical Apparatus
The Magazine of Electrical &
Electronic Application & Maintenance

July 2005 

Below are listed featured articles from the July 2005 issue, Vol. 58, no. 7 © 2005 Barks Publications, Inc. ... see also July 2005 departments and columns and Previous issues.

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• Plant and Shop Equipment  A special section devoted to equipment and materials used in apparatus service - our popular periodic roundup of the latest tools, equipment and devices that can increase service shop productivity, maximize safety, and enhance the value of repair jobs and services.

  
  By the EA Staff

• Their business rides the rails - overhauling and rebuilding traction motors at Traction Motor Services, North Huntingdon, PA

  EA visits TMS, a full-service motor repair center specializing in the electro-mechanical repairing, re-building, rewinding and re-manufacturing of AC & DC traction motors & generators used in mainline, mass transit and secondary industrial rail applications. This article will especially appeal to operators of industrial locomotives and rail-mounted cranes, as well as municipal transit authorities nationwide, who are increasing the TMS shop's workload year after year.

  By Richard L. Nailen, P.E., EA Engineering Editor

• Time to wake up to alarms An understanding of the various indicators on the market is essential to automation reliability.

  
  By David Tryling, EA Electronics Editor

• Understanding apparatus temperature ratings Temperature ratings involve more than relating external conditions to internal heat generation. All users of electrical equipment need to protect it from overheating, and should therefore be aware of the nature and importance of the applicable temperature limits. Heat shortens insulation life. All electrical apparatus includes the same basic types of insulation material. Don't the same thermal ratings therefore apply to everything? Our article, by Engineering Editor Richard Nailen, answers this and other important questions: Can apparatus be too cold as well as too hot? Do standards govern surface temperatures? How is insulation life numerically related to temperature? And, what is a "hot spot allowance"?

  By Richard L. Nailen, P.E., EA Engineering Editor

  Read a summary. (trilingual summary appears in the magazine)

• When it gets too hot to work   Minimizing summer's heat on employee productivity.
  By Richard B. Elsberry, EA Contributing Editor 

• Billing what it's worth   Superior technology and service can justify higher prices.
  By William H. Wiersema, CPA, EA Contributing Editor

See also July 2005's Departments, columns