24 KV Silicon Rubber Cut out Fuse
Fuse cutout
Drop-out fuse cutout and load switching fuse cutout are of outdoor
used high voltage protective device,Tobe connected with incomin-g
feeder of distribution transformer or distribution lines,it mainly
protect transformer or lines from short circuit and overload,and
on/off loading,current,Drop-out fuse cutout is composed of insulate
insulator supports and fuse tube,static contacts is fixed on two
sides of insulator support and moving contact is installed on two
ends of fuse tube,Fuse tube is composed of inside arcexting
tube.Outer phenolic compound paper tube or epoxy glasstube,Load
switching fuse cutout provides enfored elastic auxiliry contacts
and arc-extinguishing exclosure switching on-off loading current.
At normally working via fuselink tightened the fuse tube is fixfed
to form up of close position.In case system occure faults,fault
current result result in fuse melt immediately and take piece
electric are,which let arc-extinguishing tube being heated and
fexplode a lot of gas,Th-os will produce high pressure and below of
the are along with tube. After fuselink melt melt moving contact
has no tightened strength again,mecganismis locked and fuse tube
drop out, Cutout now is in open position,When it needs to switch
off during cutout loading,operat-or shall via insulating operating
bar pull the moving contact,atits beginning main contact and
auxiliary static contactic contactedst-ill, Whiling pulling the
auxiliary contact is separated between auxiliary contacts there
occur electric arc and the arc will be lengthene-d in
arc-extinguishing enclosure gap and meanwhile arc-exting explode
gas to blow off the arc during current passing zero.