Automatic Transfer Switches – Alternate Source Applications and Withstand Ratings


IEEE San Francisco Industry Applications Society Chapter: Technical Dinner Meeting
Date:               Tuesday, January 26, 2016

Title:                Automatic Transfer Switches – Alternate Source Applications and Withstand Ratings
Speaker:          Alex Lotz, ASCO Power and Technology
Time:               Networking from 5 pm; Presentation and Dinner at 6 pm

Place:              Delancey Street Restaurant, 600 The Embarcadero, San Francisco, CA 94107.
Call (415) 512-5179 or visit following website for more information:

Cost:               $25 for IEEE members and non-members; $10 for student and retired members.
Registration Link (Register by COB 5 pm January 25, 2016):
Abstract:  The Automatic Transfer Switch presentation will focus on properly specifying the transition method based on the types of loads and application. This will cover the advantages and disadvantages of open transition, delayed transition, and closed transition – while also briefly discussing PG&E’s Rule 21 and its effect on introducing closed transition switches to the grid. In addition to ATS transition modes, we will discuss the benefits of ATS with bypass-isolation. We will also discuss criteria for how to correctly specify 3-pole vs. 4 pole ATSs depending on the grounding scheme and ground fault considerations.  Lastly, we will cover UL 1008 with emphasis on Revision 7 released November 1, 2014 and how it affects appropriately sizing your ATS based on the associated withstand close-on rating (WCR).
Biography: Alex Lotz began his career with ASCO in 2012 after graduating from Pennsylvania State University with a Bachelor of Science in Electrical Engineering. Alex started in ASCO’s Metro NY sales office and relocated to Northern California shortly after completing product training at ASCO’s headquarters and manufacturing locations throughout the US. As a participant in IEEE throughout college, Alex has continued his affiliation by attending IEEE / IAS meetings, presentations, and conferences throughout the Bay Area.

2/26/16 Electrical and Lighting Commissioning Seminar:
Pick up some valuable, insightful pointers that you can potentially include in your Contract drawings and specifications!
Seminar registration link (Go here to download flyer PDF for check payment):

Service Announcements: 

Check out to find information about latest local Bay Area (SF /OEB / SCV) PES and IAS Chapter meetings.

Although not advertised on E-Grid, note below link for 1/20/16 SLAC Tour Event details.

San Francisco IAS AdCom Committee (pending vTools election results):
Chairman:                                Bob Formicola, Bay City Electric Works / Kohler, (925)
Vice-Chairman:                       Ali Vakili, Eaton Electrical, (925)
Treasurer:                                Gary Fox, GE, (925)
Secretary:                                Alex Lotz, ASCO Power Technologies, (925)
Membership:                           Ben Rosenfeld, Kling Stubbins, (415)
Program Chair:                        Finn Schenck, Schneider Electric, (510)
Members at Large:                  Sonny K. Siu, Kling Stubbins, (415)
                                                Jack Lin, SFPUC, (415)
                                                Jim Avery, C.E.D., (408)
The San Francisco IAS Administrative Committee
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