Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Patent
1999-03-29
2000-09-12
Leja, Ronald W.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
361 411, H02H 320
Patent
active
061186392
ABSTRACT:
A fast acting disconnect system is incorporated with a transient voltage surge suppressor to protect the surge suppressor and the connected utilization equipment from power frequency overvoltages. A resettable circuit breaker permits reconnection after disconnecting the AC voltage source due to a power frequency overvoltage. The system is applicable to protect equipment connected to an AC source of voltage that has a phase conductor, a neutral conductor and a grounding conductor with surge suppressors connected to protect against transient voltage surges from phase-to-neutral, phase-to-ground and neutral-to-ground. The system protects against damage of the surge suppressor and the connected equipment from power frequency overvoltages as specified for testing by a recognized testing agency. A transient voltage surge of the greatest magnitude anticipated in the environment for which the system is designed will not cause a false disconnect operation. The system will respond to a power frequency overvoltage under conditions in which it is not energized prior to the application of the overvoltage.
REFERENCES:
patent: 4587588 (1986-05-01), Goldstein
patent: 4636910 (1987-01-01), Chadwick
patent: 4918562 (1990-04-01), Pulizzi et al.
patent: 4999728 (1991-03-01), Curl
patent: 5617288 (1997-04-01), Zaretsky
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