Electricity: electrical systems and devices – Safety and protection of systems and devices – Impedance insertion
Patent
1978-04-24
1979-11-27
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Impedance insertion
361115, 200144AP, 200150R, 337401, H02H 722
Patent
active
041763858
ABSTRACT:
An explosively activated current interrupter is provided for use in a fault current limiting system employing a plurality of such interrupters. Each interrupter includes an automatic switching system for sequentially installing each of a plurality of the interrupters on a power line. A conductive member in the interrupter housing conducts current carried by the power line. An explosive charge in the housing breaks the conductive member into a plurality of separated portions upon detonation, thereby interrupting the power line current. A switch opened and closed by means of explosive gas pressure alternately installs and removes the interrupter from the power line. Each interrupter is connected by a gas conduit to the next sequential interrupter to be detonated. Upon detonation of one interrupter, a portion of the explosion gases are transferred by the conduit to the next interrupter, operating the switch to install the next interrupter on the power line after an appropriate delay.
REFERENCES:
patent: 2931874 (1960-04-01), Leaman
patent: 3932717 (1976-01-01), Dike et al.
patent: 3962605 (1976-06-01), Thaler
"Two Stage Opening Switch Technique for Generation of High Inductive Voltages", by Conte et al., Naval Research Laboratory, Oct. 25-28, 1977.
"Explosively Actuated 100kA Opening Switch for High Voltage Application", by Nord et al., Plasma Physics Division of Naval Research Lab., May 25-27, 1977.
"Two-Stage Electroexplosive Circuit Breaker", by Zeltoz et al., Institute of Scientific Research . . . , U.S.S.R., 1976.
"Explosive Switch for Interrupting Inductive Circuits", by Young et al., Naval Research Laboratory, Sep. 1976.
Electric Power Research Institute Inc.
Salce Patrick R.
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