Pluggable secondary control system component and connected fixed separation type low-voltage switchgear assembly

Abstract

The invention relates to component of low-voltage switchgear assembly, in particular to a pluggable secondary control system component. The pluggable secondary control system component comprises a control loop element (16), a spile (19), a control loop master switch QF1 (17), a pluggable terminal (18); wherein the control loop master switch QF1 (17), the pluggable terminal (18) and the control loop element (16) are arranged on the spile (19), the control loop master switch QF1 (17) is connected with the pluggable terminal (18), and the control loop element (16) is connected with the pluggableterminal (18). The invention can ensure a user to timely, safely and conveniently replace when the control system is damaged or needs functional upgrading without influencing power supply.

Description

technical field [0001] The invention relates to components of a low-voltage complete switchgear, in particular to a pluggable secondary control system component. Background technique [0002] At present, there are three main types of low-voltage complete switchgear used in the Chinese market: fixed closed type, withdrawable type, and fixed partition type. [0003] Fixed closed low-voltage complete switchgear has been gradually eliminated due to its single structure, poor universal interchangeability, user maintenance, and inconvenient replacement of components. The current mainstream products are withdrawable and fixed-separated low-voltage complete switchgear, but these two products also have the following defects: First, the primary and secondary components in the functional unit of the withdrawable low-voltage complete switchgear are installed in the same drawer Inside, the withdrawable functional unit can be separated from the cabinet body. The advantage is that it can ...

AI Technical Summary

Problems solved by technology

[0003] Fixed closed low-voltage complete switchgear has been gradually eliminated due to reasons such as single structure, poor general interchangeability, user maintenance, and inconvenient replacement of components.

The current mainstream products are withdrawable and fixed-separated low-voltage complete switchgear, but these two products also have the following defects: First, the primary and secondary components in the functional unit of the withdrawable low-voltage complete switchgear are installed in the same drawer Inside, the withdrawable functional unit can be separated from the cabinet body. The advantage is that it can be conveniently and quickly mass-produced in the production process, and the user's maintenance is convenient and safe. The disadvantage is that the primary circuit of the withdrawable functional unit is connected through a primary plug. If it is connected to the main circuit, the plug part will often burn out during long-term power-on operation, which will cause great safety hazards and economic losses to users; It is fixedly installed with a plug-in switch, which has the advantages of reliable contact and high breaking and making capacity, but the secondary control system such as the control relay element is fixed in the fixed separation unit, which leads to low production efficiency and inconvenient maintenance for users. Disadvantages: If the secondary component needs to be replaced due to damage or the function of the control system is upgraded, the primary system must be powered off, resulting in a power outage of the electrical equipment and affecting the normal production of the user

Due to the limited space for separating functional units and the need to operate in the cabinet, this will bring great inconvenience to the wiring workers in the factory and seriously affect the production efficiency

In addition, the current secondary line connection is connected with ordinary fixed connection terminals. It is necessary to set up a terminal frame and a secondary component mounting frame in the fixed partition functional unit, which causes the interior of the partition functional unit to be messy and unsightly. It is inconvenient for future maintenance, making it difficult for on-site users to repair and replace components conveniently and quickly, and once the components in the partition function unit are damaged and need to be replaced, it is necessary to cut off the main circuit switch in the cabinet before proceeding. At this time, the other partition functional units in the cabinet are still in the normal live operation state, and it is extremely unsafe to operate in the cabinet at this time, and there is no safety guarantee

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