Describe The Features of HV Fuses Flashcards
What is the main physical difference between an HV fuse and an LV fuse?
The HV fuse is longer
Fuses are less likely to be found in transmission systems than in distribution systems. True or False?
True
What is the difference between a fuse’s current rating and its interrupting-current rating?
Current rating is the magnitude of the current it can carry continuously without blowing. Interrupting-current rating is the magnitude of the current it can safely interrupt
What is the primary reason for using a current-limiting fuse?
To limit current so as to reduce stress and/or damage to the equipment
Which type of fuse has a replaceable cartridge?
Solid-materials fuse
Which type of fuse has a replaceable fuse link?
Distribution cut-out
Which of the fuses does not use some form of spring action to assist opening?
Current-limiting
What is necessary for using a solid-materials fuse indoors?
A condenser is necessary for collecting expelled materials
What is the de-ionizing agent used in a solid-materials fuse?
Boric acid powder
Which of the HV fuses are you least likely to encounter nowadays?
Liquid type
What two useful functions are provided by the distribution cut-out fuse in dropping down when the fuse holder opens?
Gives visible indication that the fuse has tripped and practically eliminates the changes of re-strike
The distribution cut-out must be replaced using a ________
Hotstick
