Side operated isolation switch

Abstract

The invention discloses a side operated isolation switch, belonging to the field of power equipment. The isolation switch disclosed by the invention comprises a contact room, a handle and wiring terminals, wherein the handle is arranged on the side surface of the switch; the wiring terminals are connected with a static contact; the wiring terminals are provided with connection columns; the connection columns are partly embedded in the wiring terminal and in interference fit with the wiring terminal; each of the connection columns is provided with a first conductive columnar part in interference fit with a power busbar; a second conductive columnar part is coaxially arranged in the first columnar part; the first columnar part and the second columnar part are in interference fit; and the thermal expansion coefficient of the second columnar part is greater than the thermal expansion coefficient of the first columnar part. The isolation switch disclosed by the invention has the following beneficial effects: a relatively large conductive area is generated through the same splicing length; therefore, the current density is reduced; low temperature rise of the wiring terminals is realized; the use amount of the busbar is reduced, such that resources are saved; and the electric clearance or the safe distance is enlarged, such that the electric safety of the equipment is improved.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to a side-operated isolating switch. Background technique [0002] In the existing power complete equipment factory, construction workers install the isolating switch in the switch cabinet. The terminals of the isolating switch are usually directly connected with the power busbar, and the power busbar is directly connected to the terminal, and the terminal is connected to the power busbar. Usually the overlapping method is used, and then fastened with bolts. Such as image 3 and Figure 4 As shown, this connection method needs to overlap the busbar and the terminal by a certain length, so that the current density of the contact surface can be maintained within a certain range, so that the temperature rise at the connection can meet the relevant standards. In order to reduce the temperature rise at the joint, it is usually necessary to increase the overlapping length of the busbar...

AI Technical Summary

Problems solved by technology

And increasing the overlap length will increase the amount of busbars, thereby increasing the manufacturing cost

The fastening bolts will reduce the electrical clearance or safety distance between conductive parts and non-conductive parts. In order to keep the electrical clearance or safety distance unchanged, it is necessary to increase the distance between the terminal and the non-conductive Large spacing will inevitably result in larger dimensions of the entire isolating switch

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