Surge Arresters and Related Assemblies and Methods
AssigneeTE Connectivity Services GmbH
InventorSenthil A. Kumar
Life of this patent
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Abstract
A surge arrester includes a polymer body or housing and a varistor assembly in the body or housing. The varistor assembly includes a plurality of varistor elements and a fuse electrically connected in series and forming a vertical stack of the plurality of varistor elements and the fuse. The stack has a first end surface, a second end surface, and a side surface extending between the first end surface and the second end surface. The varistor assembly includes a first end fitting at the first end surface of the stack and a second end fitting at the second end surface of the stack.
Claims22
A surge arrester comprising:
- a polymer body or housing;
- and
- a varistor assembly in the body or housing, the varistor assembly comprising:
- a plurality of varistor elements and a fuse electrically connected in series and forming a vertical stack of the plurality of varistor elements and the fuse, wherein the stack has a first end surface, a second end surface, and an outer side surface extending between the first end surface and the second end surface;
- a first end fitting at the first end surface of the stack;
- and
- a second end fitting at the second end surface of the stack
- wherein the fuse comprises a body, a first endcap at a first end of the body, and a second endcap at a second, opposite end of the body, and
- wherein the surge arrester further comprises at least one annular semiconductor layer that contacts and surrounds at least one of the first and second endcaps of the fuse.
(canceled)
A surge arrester comprising:
- a polymer body or housing;
- and
- a varistor assembly in the body or housing, the varistor assembly comprising:
- a plurality of varistor elements and a fuse electrically connected in series and forming a vertical stack of the plurality of varistor elements and the fuse, wherein the stack has a first end surface, a second end surface, and an outer side surface extending between the first end surface and the second end surface;
- a first end fitting at the first end surface of the stack;
- and
- a second end fitting at the second end surface of the stack,
- wherein the fuse is positioned at an interior of the stack with at least one of the plurality of varistor elements above the fuse and at least one of the plurality of varistor elements below the fuse.
(canceled)
A surge arrester comprising:
- a polymer body or housing;
- and
- a varistor assembly in the body or housing, the varistor assembly comprising:
- a plurality of varistor elements and a fuse electrically connected in series and forming a vertical stack of the plurality of varistor elements and the fuse, wherein the stack has a first end surface, a second end surface, and an outer side surface extending between the first end surface and the second end surface;
- a first end fitting at the first end surface of the stack;
- and
- a second end fitting at the second end surface of the stack,
- wherein the fuse comprises a body, a first endcap at a first end of the body, and a second endcap at a second, opposite end of the body,
- wherein the fuse is positioned at a top of the stack such that the first endcap defines the first end surface of the stack, and
- wherein the plurality of varistor elements are positioned below the fuse.
Dependencies are inferred from the claim text.