Micro metal full-enclosed vacuum switch cabinet

Abstract

The invention relates to a miniature metal totally closed vacuum switch cabinet which comprises a handcart room, a main busbar room, a cable room and an instrument room; the instrument room is positioned at the front half part of the upper part of the cabinet body and is provided with a microcomputer protecting device; the handcart room is positioned at the middle part of the cabinet body, a handcart type vacuum circuit breaker is arranged in the handcart room, the main busbar room is positioned at the rear half part of the upper part of the cabinet body, and an insulating sleeve pipe and an upper contact box are arranged in the main busbar room; an external lead-out rectangular busbar is connected with the upper contact box via a central busbar hole arranged outside the cabinet body to penetrate through the insulating sleeve pipe and rationally connected with a circular busbar, the upper contact box is connected with an upper outgoing line contact arm corresponding to the handcart type vacuum circuit breaker in an inserted way, and the lower outgoing line contact arms are respectively and correspondingly connected with a lower contact box at the upper part of the cable room; a lower contact is connected with the primary side incoming end of an A, B and C three-phase mutual inductor, and the primary side outgoing end of the mutual inductor is connected with a grounding switch when being connected with electric equipment outside. The invention has scientific, reasonable, compact and rigorous design, is economic and practical and is suitable for the distribution rooms such as institutions, schools, hospitals, guesthouses and the like.

Description

technical field [0001] The invention relates to a power switchgear, in particular to a metal-enclosed switchgear with small size, light weight, complete functions, stable performance and reliability. Background technique [0002] The 12kV switchgear is a necessary and commonly used equipment in the power system, which plays a role in controlling the safe operation of the input and output of power, and provides a safety guarantee for the maintenance of power equipment. It is also a powerful guarantee for the normal operation of power transmission and transformation. [0003] However, the current general-purpose 12kV mid-mounted switchgear is bulky, occupies a large area, naturally has a lot of consumables, is quite heavy, and is inconvenient to carry and install. Resources and energy are consumed, the installation is complicated, and the amount of daily maintenance is also large, so there are many things that need to be perfected and improved. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of the switchgear commonly used at present, such as large volume, large floor space, inconvenient installation, large resource and energy consumption, high overall cost, etc., and provide small size, small footprint, light weight, complete functions and stable performance. A small metal fully enclosed vacuum switchgear

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