Under oil expulsion fuse cartridge assembly

Details Under oil expulsion fuse cartridge assembly Under oil expulsion fuse cartridge assembly

H - Electricity

01

H

306/146, 306/148

H01H 85/04 (2006.01) H01H 85/143 (2006.01) H01H 85/40 (2006.01)

Patent

CA 1255348

UNDER OIL EXPULSION FUSE CARTRIDGE ASSEMBLY Abstract of the Disclosure An under oil expulsion fuse cartridge assem- bly includes a tubular housing of non-electrical con- ductive material, an electrically conductive contact removably threadedly mounted on each end of the housing, and a replaceable fuse assembly removably received within the tubular housing. One of the end contacts incorporates a pressure chamber providing a flushing and cleaning operation during the interruption process. The fuse assembly includes a fuse liner tube in a fuse link therein in the form of a flat ribbon element electrically connected to each of the end con- tacts. One end of the fuse link is mounted on a thin disc which includes a plurality of projecting lands that prevent direct engagement of the fuse link with the end contact to avoid breaking the fuse link. The fuse link also includes a plurality of holes formed therethrough covered by a eutectic material having a desired melting temperature so that current interrup- tion occurs at a predetermined operating temperature.

512022

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