Explosively Actuated 100 kA Opening Switch for High Voltage Applicatons.
NAVAL RESEARCH LAB WASHINGTON D C
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The role of opening switches for high power energy sources as those required in particle beam research is becoming more important as the prospects for use of inductive storage techniques widens. The technology associated with these switches is also applicable to protection of electric power transmission equipment where continually increasing voltage levels are being sought. A single shot modular opening switch capable of carrying currents up to 100 kA indefinitely and opening in a time of approximately 20 microseconds has been developed. High voltage tests with no current being carried by the switch were performed to determine the voltage hold-off capability of the switch. Application of high voltage across the 25 cm switch during its rupturing phase has shown that the gaps forming in the cylindrical conductor and the expanding gas core, as well as paraffin-gas interface can be stressed to more than 100 kV at times later than 70 microseconds after the initiation of the explosive. Tests with 2-gap 5 cm switch showed that up to 10 kVcm can be maintained.
- Electrical and Electronic Equipment
- Energy Storage