H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/157
H01H 85/08 (2006.01) H01H 85/04 (2006.01) H01H 85/055 (2006.01)
Patent
CA 1174716
11DTO4518 Abstract A high voltage fuse for interrupting a wide range of currents and especially suited for low current interruption is disclosed. The fuse is comprised of a fuse element having a first and a second plurality of portions of reduced cross- sections. The second plurality of portions further comprise two or more parallel conducting paths some of which-carry a portion of material which has a lower melting temperature than the melting temperature of the material of the fuse element. The parameters of the first and second plurality of reduced cross-section portions, the lower melting point material, and the fuse element itself are selected to adapt the fuse to provide proper protection for the various current conditions to which a high voltage transformer is subjected. The fuse element provides fast rupturing under short-circuit current conditions while also pro- viding the characteristic of withstanding relative- ly high inrush current conditions. The fuse element further provides improved low current clear ing ability for the fuse, and a fuse which responds quickly to through fault (secondary fault) conditions in a transformer.
403589
Carroll James J.
Leach John G.
Company General Electric
Eckersley Raymond A.
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