Protection Device Employing Current Limiting Fuse and Vacuum Fuse
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United States of America Patent
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Issued Date -
Jun 30, 2016
app pub date -
Dec 31, 2014
filing date -
Dec 31, 2014
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Abstract
A non-current limiting vacuum fuse employs a fusible assembly having a pair of electrodes and a fusible element that is situated therebetween. The fusible assembly is a rigid, self-supporting unitary structure that is brazed to an envelope when manufactured inside a vacuum furnace. The fuse provides improved interruption capability and/or a higher voltage rating at reduced cost. The fuse may be used individually, or a plurality of the fuses can be connected together in series to provide enhanced interruption capability and/or a higher voltage rating. The fuse can be connected in parallel with a current limiting fuse to form a vacuum current commutating fuse that provides the benefits of both types of fuses.
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