The Lightning Proof Fuse (LPF) protects your distribution Line from over current damage, by isolation of the fault. It is a convenient and cost effective method of over current protection, with the advantage of eliminating nuisance fuse blows.
Conventional Fuse Cut-outs are simply removed and replaced with the Lightning proof fuse. The Lightning proof fuse is not to be used as a line fuse and should only be placed within the vicinity of the pole mounted transformer. According to research 90% of fuse callouts are caused by nuisance Fuse blowing. Both Direct and Indirect lightning strikes are the cause of nuisance fuse blowing.
By utilizing the LPF, Lightning will not cause nuisance outages, as with the use of the conventional fuse-cutout.
Another advantage of utilizing the LPF, is that point location will be achieved when a transformer is down. By simply replacing existing line fuses with links and utilizing the Lightning proof fuse at the Pole mounted transformer , multiple customers can be provided with faster fault recovery, improving power quality during Lightning storms.