Full range current limiting fuse to clear high and low fault cur

Details Full range current limiting fuse to clear high and low fault cur Full range current limiting fuse to clear high and low fault cur

1995-03-10

1997-02-18

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337159, 337162, H01H 8504

Patent

active

056044747

ABSTRACT:
An improved high voltage, full range, current limiting fuse with enhanced ability to dear high and low fault currents, even after the fuse has been subjected to a potentially damaging current surge, includes a sand-filled tubular housing with conductive terminals at either end and a dielectric support member supported therein about which a fusible structure is spirally wound. The fusible structure is electrically connected to the terminals and includes one or more high fault current interrupting elements for clearing high fault currents to which is mounted a low fault current interrupting assembly. The low fault current interrupting assembly includes a plurality of conductive components one of which is a damage sensor portion having a melting time-current characteristic which results in the damage sensor portion melting before the one or more high fault current interrupting elements. This enables the fuse to interrupt a low current which might exist after an element-damaging surge has occurred. A thermal shield mounted to the housing adjacent the low fault current interrupting assembly prevents damage to the housing caused by arcing in the low fault current interrupting assembly.

REFERENCES:
patent: 3801947 (1974-04-01), Blewitt et al.
patent: 3840836 (1974-10-01), Link
patent: 3921116 (1975-11-01), Mikulecky
patent: 4123738 (1978-10-01), Huber
patent: 4538133 (1985-08-01), Pflanz
patent: 4626817 (1986-12-01), Cameron
patent: 4689596 (1987-08-01), Huber

Affiliated with

Also associated with

Rating

Full range current limiting fuse to clear high and low fault cur does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Full range current limiting fuse to clear high and low fault cur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Full range current limiting fuse to clear high and low fault cur will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1604825