High voltage indoor fuse for Voltage Mutual Inductor Protection:
RN1 type indoor H. V. Current-limiting fuse is used for protectiong from overload and short circuit for power circuit. THe so-called current-limiting is the function of fuse cutting off the short circuit current before it reaching the peak value.
1. When the passing current for fuse is 1.3 times of its rated current, it does not melt in 1 hour.
2. When the passing current for fuse is 2 times of its rated current, it melts in 1 hour.
3. Fusing characteristic curve of fuse see the following Fig, for reference of selecting fuse.