Electricity: circuit makers and breakers – Special application – Frangible or destructible type
Patent
1980-01-09
1981-10-20
Scott, James R.
Electricity: circuit makers and breakers
Special application
Frangible or destructible type
337290, H01H 3900
Patent
active
042962854
ABSTRACT:
A high-voltage, blast-actuated power switch is disclosed in which field electrodes are included in order to prevent arcing within the switch after a bridge conductor has been blasted. The field electrodes are arranged coaxially about the bridge conductor, and are each electrically connected to one of two external connections. The field electrodes include opposing ends which are rounded and which are separated from each other by a distance which is smaller than the distance between the separated ends of the bridge conductor that are bent back onto internal elements of the external connections when the bridge conductor is blasted. The field electrodes tend to reduce the influence of the sharp edges formed on the separated ends of the bridge conductor when the bridge conductor is blasted, thereby increasing the breakdown voltage between the external connections and increasing the dielectric strength of the switch. An alternate embodiment of the present invention includes a floating electrode which is arranged between the opposing ends of the field electrodes.
REFERENCES:
patent: 2892062 (1959-06-01), Bruckner et al.
patent: 3848100 (1974-11-01), Kozorezov et al.
patent: 4174471 (1979-11-01), Ford et al.
Lang Ernst
Niemeyer Lutz
BBC Brown Boveri & Company Limited
Scott James R.
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