Explosively actuated opening switch

Details Explosively actuated opening switch Explosively actuated opening switch

1978-03-27

1979-11-13

Scott, James R.

Electricity: circuit makers and breakers

Special application

Frangible or destructible type

H01H 3900

Patent

active

041744713

ABSTRACT:
A modular opening switch for high currents providing high current-carrying apacity, high voltage hold-off capability and very short opening time. The switch operates on the principle of an explosively generated pressure which ruptures and then drives paraffin radially through a cylindrical current conducting tube, so that the paraffin provides an electrically insulative barrier between the ruptured portions of the conducting tube. Alternate cutting and bending rings, between which insulating rings are placed, are disposed around the periphery of the conductor tube. The insulating rings are tapered at the periphery of the conductor tube to provide void spaces into which the paraffin is driven and firmly packed without voids or cracks which deteriorate the insulating property of the paraffin.

REFERENCES:
patent: 2892062 (1959-06-01), Bruckner et al.
patent: 3117194 (1964-01-01), Stresau, Jr.
patent: 3819890 (1974-06-01), Kozorezov et al.
patent: 3848100 (1974-11-01), Kozorezov et al.
patent: 3932717 (1976-01-01), Dike et al.

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