Electrical protective device
First Claim
1. An electric protective device for a high voltage cable termination from an overhead transmission line comprising:
- (a) a tubular insulator through the center of which a voltage carrying conductor passes and which, when in service, will be exposed to the voltage of the conductor at one of its ends and to a ground voltage at its other end; and
(b) a surge arrester concentrically disposed about said tubular insulator, said insulator and surge arrester having common terminals at their ground and high voltage ends.
0 Assignments
0 Petitions
Accused Products
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.
-
Citations
11 Claims
-
1. An electric protective device for a high voltage cable termination from an overhead transmission line comprising:
-
(a) a tubular insulator through the center of which a voltage carrying conductor passes and which, when in service, will be exposed to the voltage of the conductor at one of its ends and to a ground voltage at its other end; and (b) a surge arrester concentrically disposed about said tubular insulator, said insulator and surge arrester having common terminals at their ground and high voltage ends. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An electric protective device for a high voltage cable termination from an overhead transmission line comprising:
-
(a) a tubular insulator through the center of which a voltage carrying conductor passes and which, when in service, will be exposed to the voltage of the conductor at one of its ends and to a ground voltage at its other end; (b) a surge arrester of tubular configuration disposed concentrically about said tubular insulator electrically connected in parallel with said tubular insulator; (c) conductive elements extending across the ends of said insulator and surge arrester providing common terminals therefor; and (d) an outer insulator about said surge arrester. - View Dependent Claims (10, 11)
-
Specification