Fused elbow terminator and stage-fused transformer loop system

A fused elbow terminator comprising:

• (a) an elbow connector comprising an insulating elbow shaped housing having a cable section and a bushing engagement section, and a cable connector disposed within said cable section of said housing, said cable connector having an upper end portion and a lower cable connection portion;
• and
• (b) a fused pin connected to said upper end portion of said cable connector, said fused pin comprising:
• (i) an elongated arc follower section made of an electrical insulating material;
• (ii) an elongated fuse section comprising a hollow fuse housing portion made of an electrical insulating material, having a front open end and a rear open end;
• a conducting portion made of an electrical conductive material, having a front end portion connected to said elongated arc follower section, and a rear end connected to and sealing said front open end of said hollow fuse housing portion;
• a fuse disposed with said hollow fuse housing portion with a front end conductively connected with said conducting portion;
• and
• (iii) an elongated cable interface section made of an electrical conductive material, including a front end connected to said rear open end of said hollow fuse housing portion and conductively connected with a rear end of said fuse, and a rear end having connection means for engaging with said upper end portion of said cable connector of said elbow connector.

A stage-fused transformer loop system comprising:

• (a) a series of transformers, each of said transformers having an inlet, and an outlet;
• a first and a last of said series of transformers being connected to an electrical power supply source;
• (b) a plurality of cables;
• each of said cables having two ends connected to said inlet of one of said transformers and said outlet of an immediately preceding transformer;
• and
• (c) a series of fuses, each thereof having a different fuse capacity;
• said series of fuses being installed at each of said inlet and said outlet of said transformers in an order of decrease of said fuse capacity starting from said first transformer, thereby forming said stage-fused transformer loop system.

A method of rapid diagnosis of a fault cable or a transformer failure comprising the steps of:

• (a) installing a fuse at an inlet and at an outlet of each transformer within an transformer loop system comprising a plurality of transformers, in an order of decrease of fuse capacity starting from a first transformer that connects to a power supply source;
• (b) when a power outage occurs in at least a portion of said transformer loop system, identifying a location of a first out-of-service transformer within said loop system;
• (c) then, testing said fuse positioned at said inlet of said first out-of-service transformer;
• and
• (d) if said fuse positioned at said inlet of said first out-of-service transformer is blown, reporting said diagnosis being a failure of said first out-of-service transformer;
• and if said fuse positioned at said inlet of said first out-of-service transformer is not blown, reporting said diagnosis being a fault cable located between said first out-of-service transformer and an immediate preceding transformer thereof.