IEEE-CPMT Society TC-1 Committee
on Electrical Contacts
Tuesday September 13, 2011
Chair: G. Witter
Vice-Chair: Bob Malucci
Secretary: C. Leung
Holm Conference Attendees
Opening: G. Witter
· TC-1 of IEEE-CPMT meeting was called to order by Chairman G. Witter.
1. Approval of minutes of previous meeting - G. Witter
· 2010 meeting minute has been posted at
web page. It was approved.
2. Preliminary Report on Joint 25th ICEC & 56th IEEE-Holm Conference Ed Smith
· Total registration is over 111 with representatives from 12 countries.
· Total of 50 technical papers and 1invited paper (Mort Antler Lecture). We also have 15 industry sponsors who support the DVD project and other social functions.
· The 2012 IEEE Holm conference will be in Portland, Oregon from Sept 23-26.
3. Report on Intensive Course on Electrical Contact G. Witter for P. Slade
· The 2011 intensive course was not offered since this is planned for every 2 years. The 2012 course will again be on Thursday to Saturday, prior to the start of the conference. Generally the survey results showed that having the course before the conference was good for students to gain more from the conference papers.
4. Report on CPMT Transaction John McBride
· CPMT now considers the Holm conference proceedings as an archived publication since 1988 and will no longer take papers directly from the conference for second publication in CPMT journal. So few papers now go from proceedings to transactions. CPMT has a format change with less papers and more intensive reviews.
5. World Calendar
· Professor Jigao Zhang reported that the 2012 ICEC will be hosted by China in Beijing. They received 137 abstracts with 77 from China and 67 foreign. Registration fee will be about US$650 including proceedings, CD, lunch, banquet, and 1 day city tour to the Great Walls and Ming Tomb. Accommodations will be at the Friendship Hotel campus, conveniently located next to the subway stations.
· Web and CPMT newsletter will be the primary medium for TC1 and Holm information. Many members have used the web for info and registration to conference. Please send conference pictures to Chi for sharing on the TC1 website. We have pictures since the 1970s.
7. TC1 sub-committee Reports:
Material restrictions and substitution Dr. Volker Behrens
Interests have been on final products but not on the manufacturing process. 3 decree are (i) end of life related to automotive Cd uses that resulted in no Cd in automotives for several years already. (ii) ROHS: Cd is forbidden in consumer devices but exempt as electric contacts. This exemption maybe terminated in 2014. (iii) REACH (Registration, Evaluation and Authorization & Restriction of Chemicals) will have more impact in the future. Cd is now forbidden in braze alloys by 12/2011. SF6 is a volunteer program to keep SF6 contained in devices in operation and maintenance.
· Henry Czajkowski : Recat ROHS in 2011. NEMA lobby to keep some of the exemptions, certain states may also impose EU guidelines. NEMA is North America based product so still in status quote with no new effort to limit Cd in devices...
Frequency Connectors Roland Timsit
HF is now into GHz with multi-pin connectors that has cross talks, board to board connections get into wire/wire cross talks so connection technologies has to be customized. Cable connectors to mitigate radiative effects. Design conference now has topics on optical guide input linking to copper technology, printed circuit structures, sockets etc.
MEMs and micro-contact technology Ron Coutu
MEMs resign are based on mechanical switch design parameters of force, packaging and environment. Little work is done on contacts.
Current Contactors - Henry Czajkowski
Mature technology that has little changed. New applications to higher (1000V) DC are being developed. Xin Zhou commented that there is not a trend to 2 tier designs and applications because of cost..
Arc fault detection John Shea / Xin Zhou
NEC code update: mandated state by state adoption of NEC code in regard to AFCI protection in 2011. State to state adoption will follow. Changes in UL6099 on branch AFCI. CB and outlet manufacturers are to define the true safety of outlets. Outlet AFCI has opportunities. UL6099B investigation on standards for DC applications (add series and parallel protection to DC) NEC has working group on AFCI. Xin commented on Photo Voltalic applications getting more important since it has lower fault current as well has rated currents of a few amperes.
Sawa: comments on DC that since the Japan nuclear fault, new electrical control equipment to have new DC standards (related to TC94) in Japan.
MCCB arc flash reduction requirements in 480V, reduce arc flash energy.
Telecommunication Werner Johler
New applications Thomas Schoepf.
Automotive: trend is toEV and hybrid; PV Breakers with a goal to be cheaper; Safety where fuse was for protection, now as DC series switches.