Oil immersible current limiting fuse assembly

Abstract From the Canadian patent

A current limiting fuse especially adapted for installation within the oil tank of a transformer for protecting the latter from the effects of high magnitude fault currents is provided which is completely fluid-submersible and capable of withstanding severe thermal cycling without damage to the fluidtight seals thereof. In addition, the fuses hereof are especially constructed for permitting quick, individual helium testing thereof in order to ensure that the fuse meet required saftey standards. The main body of the fuse is encapsulated within a fluid-impervious casing of filled epoxy material which is penetrated by a pair of opposed, end-mounted electrically conductive, terminals each being …