Drop type fuse is used to protect short circuit and overload circuit equipment. It is a kind of short circuit protection switch commonly used in 10KV distribution lines and distribution transformers. The advantages of the drop circuit breaker are convenient operation, strong adaptability and economy. Drop type fuse is very important in the distribution line, it is also a kind of equipment that is easy to damage, how to quickly replace the fuse, to ensure safety, we must understand the common failure of drop type fuse.
The parts of the drop type fuse that are easy to damage are front hoop bolts, struts, upward moving contacts, pulling blades, melting pipes, arc extinguishing covers, etc.Check these vulnerable parts in turn, cause trouble points, and deal with them in time. The replacement method of the drop type fuse: if the porcelain neck is broken, the arc extinguishing cover is burned and other faults, the whole body needs to be replaced. If the up-moving contact, pull switch, fuse burn and other failures, for cost and safety considerations, you can buy the matching melt, fuse, etc., when buying the fuse, there is such a failure, you can directly replace the load.
Drop type fuse is a kind of short circuit protection switch commonly used in 10KV circuit, which protects the operation safety of maintenance personnel. Most of the drop type fuses have no arc extinguishing device, so when operating the drop type fuses, it is necessary to operate correctly to avoid being burned by the arc. The following, a brief introduction to the operation of the drop type fuse precautions:
When pulling out the drop type fuse, you must wear insulation rods, insulation shoes, insulation gloves, insulation caps and goggles that are suitable for the voltage level and have passed the test, or stand on a dry wooden platform and be supervised by someone to protect your personal safety. When pulling the drop type fuse, during the pulling process, the moving contact should be fast when approaching the static contact, and the other times should be slow, fast is to avoid arc damage to the contact, slow is to avoid impact, and the parting and closing should be in place.
In the case of power failure, the operation of the drop fuse is to pull the middle first, and then pull both sides, and the power supply is the opposite of the previous step.
