Not-opening door operation tapping unit of low voltage distribution cabinet

Abstract

The unit of low-volatile distribution cabinet includes left and right side plates with double-folded edge, fixed plate, removable back plate, and installation beams being connected. Advantages are: under precondition of not changing original outline structure of unit in draw-out type to reach purpose of operation without opening door. In procedure of operation, function for displaying position requested by national standard is satisfied. Technique of double-folded edge enhances intensity. Thus, thickness of plate is changed to 1.0-1.5mm, and more than 1 / 4 cold steel plate is saved. Electricalconnector pieces on moved plate are still aligned to vertical bus precisely. Both way connector (BC) is in module form. Being connected to BC, the conducting strip is changed to forficiform structurefrom thermal fin type. Thickness of copper plate changes to 2.0mm so as to save material, but still meet requirement of contact insertion and withdraw force, and standard value of temperature rise.

Description

technical field [0001] The invention relates to a draw-out unit of a low-voltage power distribution cabinet (MCC) without opening the door, and belongs to the technical field of low-voltage draw-out complete switchgear. Background technique [0002] Most of the position operations of the withdrawable unit in the existing low-voltage withdrawable complete switchgear are carried out by moving the drawer body. The contact of the electrical connection point is unbalanced, the contact resistance of the contact is large, and the temperature rises. The degree of protection is not easy to guarantee. It is difficult to meet the high protection level requirements of the low-voltage system and the engineering needs of special fields. In the prior art, there is a technology that does not move the drawer body, such as the invention patent (ZL200410064770.9). A movable part and a propulsion mechanism are provided, and a position interlocking unlocking mechanism is provided on the base o...

AI Technical Summary

Problems solved by technology

Its defect is that the rotation stroke of the ordinary threaded screw is too long, the operating force is large, the sheet metal components of the moving operation part, positioning and guiding need to have extremely high accuracy, and the structure is complicated. In addition, it can only be installed and used for its special cooperation. On the cabinet, the relationship between the main component and the matching component is reversed, which brings inconvenience to the popularization and application

The two-way connector electrical connecting sheet used as the moving part of the electrical connection is stacked in sheets, and there is no heat dissipation space between the sheet structure and the two sheets, which affects the carrying capacity

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