Electricity: electrical systems and devices – Safety and protection of systems and devices – Transient responsive
Patent
1998-11-10
2000-03-14
Sherry, Michael J.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Transient responsive
361118, 307 66, 307 86, H02H 322
Patent
active
060381183
ABSTRACT:
A lightning detector system which includes a radio frequency (RF) detector assembly which receives input from an antenna and a line sensor in order to sense signatures of compromising events such as lightning strikes or transient line events caused by power grid loss, transformer breakdown, switching surges or load induced events. A central processing unit (CPU) isolates the equipment from the power grid and simultaneously causes AC current to be supplied to the equipment only from storage cells. The CPU and detection devices are continually powered by power from the storage cells rather than directly from the AC power grid. The system also incorporates a timer or counter device, such that the system will convert back to AC power from the grid if no subsequent triggering event occurs within a preset time period.
REFERENCES:
patent: 4628396 (1986-12-01), Flemming
patent: 4823228 (1989-04-01), Bittner
Saitta Thomas C.
Sherry Michael J.
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