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US 5,517,382 AGranted
Surge suppressor having looped clamping elements
AssigneeABB Management AG
InventorsPeter Leupp, Bertil Moritz, Walter Schmidt
Life of this patent
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AssigneeABB Management AG
InventorsPeter Leupp, Bertil Moritz, Walter Schmidt
Estimating the term…
The surge arrester contains two connection fittings (1, 2) which are spaced apart from one another along an axis and between which at least one cylindrical varistor element (7) is arranged. The connection fittings (1, 2) and the at least one varistor element (7) are clamped with one another, accompanied by the formation of contact force, to form a mechanically stable active part of the surge arrester. The active part is surrounded by a cast housing (12) made from insulating material. The clamping of the active part is achieved by at least two loops (5) respectively acting independently of one another on the connection fittings (1, 2). The loops (5) are arranged at a distance from the at least one varistor element (7). The connection fittings (1, 2) contain bearing areas which correspond respectively to the number of the loops (5) and are distributed uniformly about the axis azimuthally and on which a loop end is respectively supported. Despite its simple design, the surge arrester has good mechanical and electrical characteristics and can be produced in a particularly cost-effective way.
A surge arrester having two connection fittings spaced apart from one another along an axis, at least one cylindrical varistor element arranged between the two connection fittings, a clamping device, made from insulating material, which clamps the connection fittings and the at least one varistor element with a contact force, and a cast housing, made from insulating material, which at least partially surrounds the connection fittings, the at least one varistor element and the clamping device, wherein the clamping device has at least two clamping elements which respectively act independently of one another on the connection fittings and are respectively constructed as loops, the connection fittings including bearing areas which are distributed about the axis in an azimuthally uniform fashion and on which a loop end is respectively supported,wherein the bearing areas respectively have a section with a semicircular surface profile.
A surge suppressor comprising:
Dependencies are inferred from the claim text.