The fuse is a very simple protective electrical appliance, mainly used to protect electrical equipment from overload and short-circuit current damage. High-voltage fuse is a kind of fuse, so how many kv can it be widely used?
High-voltage fuses are widely used in various high-voltage circuits and power supply networks of 110kv and above. Of course, they are also widely used in power stations and substations of 3 ~ 35KV.
There are two types of commonly used high-voltage fuses:
One is the indoor high-voltage current-limiting fuse, the rated voltage can reach 40.5KV.
Mainly used to protect power lines, power transformers, power capacitors and other equipment from overload and short-circuit.
The other type is outdoor high-voltage expulsion type fuse cutout. When the fuse melts and generates an arc, it needs to wait for the current to cross zero before breaking the circuit, which has an unlimited current effect.
Mainly used to protect power lines, power transformers, power capacitors and other equipment from overload and short-circuit. Under certain conditions, it can also disconnect and shut down no-load overhead lines, no-load Transformer and small load current.
Therefore, the high-voltage fuse should be selected according to its type and different protection objects.