Isolator-arrester assembly
AssigneeHubbell Incorporated
InventorJohn A. Krause
Life of this patent
Estimating the term…
Abstract
An arrester assembly for protecting a circuit from electrical switching and lightning surges includes an isolator and a surge arrester. The isolator has one electrically conductive terminal connected to a power line conductor. The other isolator electrically conductive terminal is connected by a flexible electrical conductor to one terminal of the surge arrester. The opposite electrical terminal of the surge arrester is connected by a conductive support to ground. The isolator, flexible conductor and surge arrester are connected in sequence and in series between the power line conductor and ground.
Claims12
An arrester assembly, comprising:
- a surge arrester having first and second electrically conductive arrester terminals at opposite ends thereof;
- an isolator having first and second electrically conductive isolator terminals at opposite ends thereof, said isolator including coupling means for electrically connecting said isolator terminals when said surge arrester functions properly and for physically disconnecting said isolator terminals when said surge arrester electrically malfunctions;
- a flexible, electrical conductor connecting said second isolator terminal to said first arrester terminal;
- electrically conductive clamp means for connecting said first isolator terminal to a power line conductor, with said surge arrester being electrically coupled to the power line only through said flexible electrical conductor, said isolator and said clamp means;
- and
- electrically conductive support means for connecting said second arrester terminal to ground.
A surge protection system, comprising;
- a power line conductor;
- an isolator having first and second electrically conductive isolator terminals at opposite ends thereof, said isolator including coupling means for electrically connecting said isolator terminals when low currents and high pulse currents flow between said isolator terminals and for physically and electrically separating said isolator terminals when high prolonged currents flow between said isolator terminals, said first isolator terminal being coupled to said power line conductor;
- a flexible, elongated electrical conductor having opposite first and second ends, said first end being connected to said second isolator terminal;
- a surge arrester spaced from said isolator and having first and second electrically conductive arrester terminals at opposite ends of said surge arrester, said second end of said flexible conductor being coupled to said first arrester terminal, with said surge arrester being electrically coupled to the power line only through said flexible electrical conductor and said isolator;
- and
- electrically conductive ground connector means, coupled to said second arrester terminal, for coupling said surge arrester to ground;
- whereby said isolator, said flexible conductor, and said surge arrester are connected in sequence and in series between said power line conductor and the ground, and said surge arrester is electrically disconnected from said power line upon separation of said isolator terminals.
Dependencies are inferred from the claim text.