Dnk Dropout Fuse

DNK Dropout Fuses are the devices for over current protection. The fuse installed on the distribution transformer or pole of power line serves as device for overload protection and switching on/off the lad current. The fuse is composed of a main insulating and conducting structure and and arcing tube. The stationary contacts are fixed at both ends of the insulting post and the moving contacts at both ends of the fuse tube composed of an arcing tube inside and an phenolic paper tube or epoxy glass tube outside. Equipped with a arcing chamber and elastic auxiliary contacts to interrupt load current and capacitor current the SSOC(NCF) 3 fuse is able to switch on/off the load current.

Technical parameter :

Max. Operation voltage : 12KV/24(27)KV
Rated continuous operation current : 100A/200A
Rated frequency : 50HZ
Fuse base rated current : 100A/200A
Rated short-circuit breaking current : 12.5KA/100A
16KA/100A(4time)
12.5KA/100A
16KA/200A(1time)
AC voltage withstand(wet) : 50KV
AC voltage withstand(dry) : 60KV
Rated lightning impulse voltage withstand : 125 KV /150KV
Creepage-distance : 32.3mm/KV
Mechanical life : 2000times of continuous switch-off and switch-on
Elevation : 2000m
Ambient temperature : -40a i +70a