Electrical protective device
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United States of America Patent
Stats
-
May 11, 1993
Grant Date -
N/A
app pub date -
Mar 13, 1991
filing date -
Mar 13, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electric protective device for protecting a cable, its termination or other apparatus from the effect of lightning strikes on an overhead line to which the apparatus is connected comprises a tubular insulator combined with a surge arrester and integrated by common terminals at the ground and high voltage ends. The insulator and the surge arrester are concentrically disposed about the conductor in a common insulated structure to eliminate connecting leads therebetween and the voltage drop which occurs across such leads during a rapid rise in current. The surge arrester may contribute all or part of the electrical stress grading required in the termination.
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