High pressure drop type fuse how to use

by:Mings     2020-05-21
Tensile load drop fuse added auxiliary elastic contact and arcing cover, to share the load current. Drop type fuse in normal operation, the fuse tube with the aid of fuse after tensioning constitute a closed position. When attack system fault, fault current makes the rapid fuse fuse, and arc, arc suppression by electric arc tube heat. Create a large number of gas, make the tube form high pressure, and intense longitudinal along the pipe blowing, arc hurtling elongated and go out. Blown fuse, lower, under static contact lose tension and release to tighten the fuse tube, falling fuse tube of a significant open position. When demand pull load. With insulating rod away dynamic contact, when active, the static contact contact, still continue to pull contact with insulation stick, auxiliary contacts also separate, between s produce arc, arc elongated in the arcing cover slit, arcing shield gas at the same time, in the current zero, the arc extinguishing. Function use edit falling type fuse is suitable for the frequency of 50 hz, rated voltage up to and including 35 kv power system, in a distribution transformer high voltage side or distribution of the main road. Main purpose is to maintain the middle of the performance request is not high, it can be separated from every other close cooperate to use, instead of automatic air switch; Can also cooperate with load switch is applied, the replacement of circuit breaker in price. At the same time also has a short circuit maintenance, overload and isolating circuit.
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