Switchboard bus assembly in which material requirements are...

Electricity: conductors and insulators – Conduits – cables or conductors – Bus bars or bus ducts

Reexamination Certificate

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C174S07000A, C174S08800C, C174S07100B, C174S0720TR, C361S611000, C439S213000

Reexamination Certificate

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07952025

ABSTRACT:
A bus system for use in electrical distribution equipment includes a generally U-shaped arrangement of conductors for supplying very high amperage (e.g., above 2000 amps) alternating current to the electrical distribution system. Compared to prior-art conductor arrangements, using the present arrangement, the conductors of a phase can be fabricated from less copper, which is an expensive metal. They also achieve better thermal dissipation and current distribution and mitigate skin effects. As a result, resistive losses, which increase with increased temperature, are reduced.

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patent: 102005047687 (2007-03-01), None
XP-002585431, “Extra losses caused in high current conductors by skin and proximity effects”, A. Ducluzaux, Cahier Technique Schneider Electric No. 83, Dated Jan. 1983, 22 pages.
XP-002585432, Effect of Busbar Arrangements on Rating, URL:www.cooperinfo.co.uk/busbar/pub22-cooper-for-busbars/sec5.htm>, Dated 1996, 8 pages.
XP-002585433, Effect of Busbars Arrangements and Profiles on the Total Power Losses, S.J. Kulas, Warsaw University of Technology, Poland, Dated 2005, 14 pages.
International Search Report Application PCT/US2009/066952, Date Jun. 6, 2010, 4 pages.
International Written Opinion Application PCT/US2009/06695, Date Jun. 6, 2010, 5 pages.

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