Electrical bushing containing a full-range current-limiting fuse

Details Electrical bushing containing a full-range current-limiting fuse Electrical bushing containing a full-range current-limiting fuse

1975-04-17

1976-11-02

Miller, J D

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337186, 337204, H01H 8502

Patent

active

039900312

ABSTRACT:
A current-limiting fuse capable of interrupting a wide range of current values is located within the bore of a porcelain insulator. One end of the fuse is connected to an outer terminal which is located at one end of the bushing insulator. The other end of the current-limiting fuse is connected to a stud which extends through a retaining washer located at the inside end of the busing insulator. The stud is tightened against the retaining washer to secure the current-limiting fuse and to maintain the retaining washer against the lower end of the bushing insulator. The bore extending through the bushing insulator is enlarged in the region adjacent to the lower end of the current-limiting fuse to permit the placement of an insulating cylindrical sleeve between the bushing insulator and the lower end of the current-limiting fuse. The cylindrical sleeve prevents the lower end of the current-limiting fuse from coming into contact with a semiconducting coating which exists on the inside surface of the bushing insulator. The entire insulator and current-limiting fuse assembly is positioned on the top of a transformer enclosure at an elevation which allows liquid dielectric within the enclosure to extend partially into the lower end of the bushing assembly. The current-limiting fuse is mounted above the liquid dielectric level to assure proper operating characteristics of the current limiting fuse.

REFERENCES:
patent: 2922927 (1960-01-01), Randabaugh
patent: 3659244 (1972-04-01), McKeithan
patent: 3732517 (1973-05-01), Keto et al.

Affiliated with

Also associated with

Rating

Electrical bushing containing a full-range current-limiting fuse does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical bushing containing a full-range current-limiting fuse, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical bushing containing a full-range current-limiting fuse will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1162440