Vacuum circuit breaker having a high current-carrying capacity

Details Vacuum circuit breaker having a high current-carrying capacity Vacuum circuit breaker having a high current-carrying capacity

2007-06-18

2008-12-30

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific circuit breaker or control structure

Reexamination Certificate

active

07471495

ABSTRACT:
The vacuum switching chamber has two contact pieces and is provided with at least one heat pipe for dissipating heat. The heat pipe contains a working medium for dissipating the heat by evaporating the working medium in a section, referred to as the evaporator, of the heat pipe and condensing the working medium in a section, referred to as the condenser, of the heat pipe. Advantageously, the evaporator is in close thermal contact with at least one contact piece, and, in particular, at least part of the evaporator is integrated in the first contact piece or the second contact piece. Advantageously, the condenser has a cooling rib arrangement.

REFERENCES:
patent: 3817451 (1974-06-01), Ramsey
patent: 4005297 (1977-01-01), Cleaveland
patent: 6564568 (2003-05-01), Shen
patent: 2 238 987 (1974-02-01), None
patent: 39 41 388 (1991-06-01), None
patent: 1 022 758 (2000-07-01), None
PCT/ISA/210 for PCT/CH2005/000748 dated Feb. 24, 2006.
PCT.IPEA/409 for PCT/CH2005/000748 dated Mar. 20, 2007.

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