FUSE FOR HIGH-VOLTAGE APPLICATIONS
First Claim
1. A current-limiting fuse for use at voltages between 23 kilovolts (kV) and 38 kV, the current-limiting fuse comprising:
- a body comprising a sidewall that at least partially defines an interior space;
a first electrically conductive plate at a first end of the body and a second electrically conductive plate at a second end of the body;
a non-conductive core in the interior space of the body;
a fuse element in the interior space of the body, the fuse element wrapped around the non-conductive core and connected to the first electrically conductive plate and the second electrically conductive plate; and
a non-bound particulate material in the interior space of the body, the non-bound particulate material comprising a plurality of pieces of the material with voids between at least some of the pieces.
1 Assignment
0 Petitions
Accused Products
Abstract
A current-limiting fuse for use at voltages between 23 kilovolts (kV) and 38 kV includes a body including a sidewall that at least partially defines an interior space; a fuse element in the interior space of the body, the fuse element wrapped around a non-conductive core and connected to first and second electrically conductive plates; and a non-bound particulate material in the interior space of the body, the non-bound particulate material including a plurality of pieces of the material with voids between at least some of the pieces. A fuse holder for use at voltages between 23 kV and 38 kV includes a housing for insertion in a sidewall of a transformer. The housing includes an exterior surface that defines an interior region. A fuse assembly is received in the interior region of the housing, the fuse assembly being configured to be replaced without opening the tank of the transformer.
17 Citations
24 Claims
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1. A current-limiting fuse for use at voltages between 23 kilovolts (kV) and 38 kV, the current-limiting fuse comprising:
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a body comprising a sidewall that at least partially defines an interior space; a first electrically conductive plate at a first end of the body and a second electrically conductive plate at a second end of the body; a non-conductive core in the interior space of the body; a fuse element in the interior space of the body, the fuse element wrapped around the non-conductive core and connected to the first electrically conductive plate and the second electrically conductive plate; and a non-bound particulate material in the interior space of the body, the non-bound particulate material comprising a plurality of pieces of the material with voids between at least some of the pieces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A fuse holder for use at voltages between 23 kV and 38 kV, the fuse holder comprising:
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a housing for insertion in a sidewall of a tank of a transformer that is part of an electrical power system, the tank configured to receive a fluid in a space that is at least partially defined by the sidewall, the housing comprising; an exterior surface that defines an interior region, and a first electrical contact and a second electrical contact at the exterior surface of the housing, the first and second electrical contacts being separated from each other along a longitudinal axis of the housing; and a fuse assembly received in the interior region of the housing, the fuse assembly being configured to be replaced without opening the tank of the transformer and the fuse holder comprising; a fuse cartridge, a first terminal contact at a first end of the fuse cartridge, a second terminal contact at a second end of the fuse cartridge, and a fusible element in the fuse cartridge, the fusible element being connected to the first and second terminal contacts. - View Dependent Claims (10, 11, 12)
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13. A fuse assembly for a transformer, the fuse assembly comprising:
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a fuse cartridge comprising a first terminal contact at a first end and a second terminal contact at a second end; and a fusible element inside the fuse cartridge, wherein the fusible element is connected to the first terminal contact and the second terminal contact, and the fusible element comprises an alloy of silver-tin (Ag—
Sn) or an alloy of cadmium-zinc-silver (Cd—
Zn—
Ag). - View Dependent Claims (14, 15, 16, 17)
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18. A fuse system for use at voltages between 23 kV and 38 kilovolts (kV), the fuse system comprising:
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a fuse holder comprising; a housing for insertion in a sidewall of a tank of a transformer that is part of a power system, the housing defining an interior region, a fuse assembly received in the interior region of the housing, the fuse assembly configured for removal from the housing without opening the tank of the transformer; and a current-limiting fuse configured to be connected in series with the fuse assembly, the current-limiting fuse comprising; a body comprising a sidewall that at least partially defines an interior space, a first electrically conductive plate at a first end of the body and a second electrically conductive plate at a second end of the body, a non-conductive core in the interior space of the body, a fuse element in the interior space of the body, the fuse element wrapped around the non-conductive core and connected to the first electrically conductive plate and the second electrically conductive plate, and a non-bound particulate material in the interior space of the body, the non-bound particulate material comprising a plurality of pieces of the material with voids between at least some of the pieces of material. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification