Exhaust control device for circuit interrupter

Details Exhaust control device for circuit interrupter Exhaust control device for circuit interrupter

1987-06-10

1988-11-29

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

200148C, H01H 8538

Patent

active

047885190

ABSTRACT:
An exhaust-control device is provided to absorb the energy of exhaust gases released during operation of a circuit-interrupting device such as a power fuse or an expulsion fuse. The exhaust-control device includes a first heat-absorbing medium through which the exhaust gases pass for reducing the temperature of the exhaust gases below a predetermined temperature. The exhaust-control device further includes a second heat-absorbing medium for receiving the exhaust gases exiting from the first heat-absorbing medium. The material, quantity, size distribution, and arrangement of the first heat-absorbing medium is selected so that the predetermined temperature of the exhaust gases does not cause significant melting of the second heat-absorbing medium that is utilized. In a specific arrangement, the first heat-absorbing medium is a section of ceramic pellets and the second heat-absorbing medium is a roll of woven copper mesh.

REFERENCES:
patent: 3258568 (1966-06-01), Patterson et al.
patent: 3719912 (1973-03-01), Harner et al.
patent: 3909570 (1975-09-01), Harner et al.
patent: 3965452 (1976-06-01), Chabala et al.
patent: 4001750 (1977-01-01), Scherer et al.
patent: 4103129 (1978-07-01), Evans et al.

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