Current surge protector for power fuses
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United States of America Patent
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-
Feb 21, 1989
Grant Date -
N/A
app pub date -
May 14, 1987
filing date -
May 14, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for preventing operation of a full range chemically augmented electrical fuse due to induced current surges includes a low inductance device electrically connected in series between an air gap device and a first terminal of a trigger circuit for triggering exothermic material within the fuse. A second air gap device is electrically connected in series with a second low inductance device. This series connection of the second air gap device and the second low inductance device is electrically connected in parallel with a high inductance device, the parallel connected combination being connected in series with a second terminal of the trigger circuit. All of these elements are electrically connected in parallel with the main fuse element which is electrically connected in series with the protected electrical power distribution system.
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