Automatic Transfer Switches (ATS)


Please plan to attend this meeting of the Industry Applications Society. The speaker will be Brian Pumphrey, Application Engineering Manager at Cummins Sales and Service.

The ATS is an integral part of an Emergency Power System.  This presentation will cover the different types of ATS along with some important design considerations, including open and closed transition switching.  There will also be a discussion on how the proper grounding and bonding scheme is critical for system functionality.  Finally, we will take a look at how the selection of transfer switches and their requirements for protection are influenced by new UL rules for ATS protection. 

  Date and Time




  • Zio Fraedos, 611 Gregory Lane
  • Pleasant Hill, California
  • United States 94523

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  • Registration closed



Automatic Transfer Switches (ATS)

Brian Pumphrey has over 14 years of experience with Cummins in the Power Generation industry.  He led the Cummins Power Systems Controls Team for nearly 12 years at their factory headquarters in Minnesota and has been working as an Emergency Power Systems Application Engineer for the past 3 years in Northern California.  He earned his Bachelor of Science in Computer Science from the University of Colorado at Boulder.


Zio Fraedos

611 Gregory Lane, Pleasant Hill. Call 925-933-9091 if you need directions.

No-host social at 5:30 pm; Presentation at 6:15pm; Dinner at 7:15 pm;

Please make reservations by November 13 by contacting Luis Soria via email:  or telephone: (415) 793-7909

The cost of dinner is $25 for IEEE members, $15 for student and retired members;

$30 for non-members.


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