High power protection apparatus

Details High power protection apparatus High power protection apparatus

1977-08-10

1979-05-22

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

315123, 315125, 328 8, 361 55, 361 91, H02H 320, H02H 720

Patent

active

041562640

ABSTRACT:
Protection apparatus responsive to a fault condition in a high voltage, high current device to be protected; includes an ignitron and a hydrogen thyratron, connected in parallel across the device under protection, such that in event of a fault in the protected device, current is tandemly shunted away from the faulting device. Both the hydrogen thyratron and the ignitron receive simultaneous triggering signals from a fault-detection circuit upon the occurrence of a fault in the device under protection. Since the hydrogen thyratron responds to the fault-trigger signal more rapidly than the ignitron, it establishes a current-shunting path in the first fraction of a microsecond until such time as the slower-responding ignitron can become conductive and carry the brunt of the current to be shunted away from the faulting protected device.

REFERENCES:
patent: 2575232 (1951-11-01), Parker et al.
patent: 2928026 (1960-03-01), Hoover
patent: 3084284 (1963-04-01), Schultz, Sr. et al.
patent: 3601657 (1971-08-01), Guarino
patent: 3916252 (1975-10-01), Gould, Jr.
patent: 4054933 (1977-10-01), Praeg

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