Conductive member of switch equipment in power system

Abstract

The invention discloses a conductive member of switch equipment in a power system. The conductive member comprises a base and a contact finger portion. The base is a cylindrical boss; the contact finger portion is composed of a plurality of conductive contact pins; the plurality of conductive contact pins are uniformly distributed and arranged along the circumference of the base at intervals; andthe plurality of contact pins and the base form a cylindrical hollow cavity with an opening at one end. According to the isolating switch conductive member of the power switch equipment, the pluralityof conductive contact pins are arranged on the circumference of the base at intervals, the top end of each conductive contact pin is provided with a contact, and the contacts are in pluggable contactwith the other conductive members, so that the contact area between the current conductive member and the other conductive members is increased, the electrification rate is improved, and the problemsof heating and burning loss and the like caused by contact of the contacts are reduced.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a conductive member of a switchgear in a power system. Background technique [0002] High-voltage isolating switch is an important switching device in the electrical system of power plants and substations, and it needs to be used in conjunction with high-voltage circuit breakers. The isolating switch is suitable for indoor installations with three-phase AC 50Hz and rated voltage 12KV. It is used to switch on, cut off or change the line when the high voltage equipment has voltage and load. [0003] Its main functions are: to ensure the safety of high-voltage electrical appliances and devices during maintenance work, and to isolate voltage. It cannot be used to cut off, input load current and break short-circuit current. It can only be used for certain switching operations that do not generate strong arcs. That is to say, it does not have arc extinguishing function; accordi...

AI Technical Summary

Problems solved by technology

The contacts of the high-voltage isolating switch are all exposed in the air and have an obvious disconnection point. The isolating switch has no arc extinguishing device, so it cannot be used to cut off the load current or short-circuit current, otherwise under the action of high voltage, the disconnection point will produce strong It is difficult to extinguish the arc by itself, and may even cause arcing (phase-to-ground or phase-to-phase short circuit), burn the equipment, and endanger personal safety. This is the so-called serious accident of "pulling the disconnector with load".

[0004] The isolating switch in the prior art has a scissor type or a semi-scissor type. The scissor type isolating switch includes a pair of movable contact rods hinged with each other to form scissor arms, and a static contact rod arranged between the two movable contact rods. There is a moving contact, and the static contact rod is equipped with a static contact. When closing, the two moving contact rods rotate relative to each other to clamp the static contact rod and the static contact rod to realize the function of converting current. When the brake is opened, the two moving contact rods are opposite The deviating rotation is separated from the static contact rod to realize power-off. The arc generated between the dynamic and static contacts during the opening and closing process will cause burning damage to the dynamic and static contacts, which will reduce or lose the current carrying capacity of the main conductive circuit of the isolating switch. Current carrying capacity affects the reliability of long-term flow of dynamic and static contacts

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