Cabinet structure and process characteristics of low-voltage switchgear
- Categories:Industry Information
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- Time of issue:2021-07-26
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(Summary description)The cabinet structure is the basis of the low-voltage switchgear combination, so the cabinet manufacturing process has become the basis. As a cabinet, it must meet the combined functional conditions of various electrical units, such as unified device types, combination standards, function distribution, etc., and must also meet the inherent requirements of the cabinet, such as strong and reliable, clean and beautiful, easy to adjust, etc. Due to the different requirements of the cabinet structure and the different processing methods of the manufacturing units, the manufacturing process cannot be forced to be consistent. However, there are more general key process characteristics in manufacturing
Cabinet structure and process characteristics of low-voltage switchgear
(Summary description)The cabinet structure is the basis of the low-voltage switchgear combination, so the cabinet manufacturing process has become the basis. As a cabinet, it must meet the combined functional conditions of various electrical units, such as unified device types, combination standards, function distribution, etc., and must also meet the inherent requirements of the cabinet, such as strong and reliable, clean and beautiful, easy to adjust, etc. Due to the different requirements of the cabinet structure and the different processing methods of the manufacturing units, the manufacturing process cannot be forced to be consistent. However, there are more general key process characteristics in manufacturing
- Categories:Industry Information
- Author:
- Origin:
- Time of issue:2021-07-26
- Views:0
The cabinet structure is the basis of the low-voltage switchgear combination, so the cabinet manufacturing process has become the basis. As a cabinet, it must meet the combined functional conditions of various electrical units, such as unified device types, combination standards, function allocation, etc., and must also meet the inherent requirements of the cabinet, such as strong and reliable, clean and beautiful, easy to adjust, etc. Due to the different requirements of the cabinet structure and the different processing methods of the manufacturing units, the manufacturing process cannot be forced to be consistent. However, there are more common key process characteristics in manufacturing. Now, these features of low-voltage switchgear are combined into the choice of cabinet structure for a brief introduction.
The low-voltage switchgear is divided into structural forms:
Stationary:
It can be reliably fixed in the cabinet to determine the position of each electrical device. The shape of the cabinet is usually a cube, such as a screen, a box, etc., as well as a prism, etc. This type of cabinet has separate columns and arrangements.
In order to ensure the size of the low-voltage switchgear, a step-by-step method of combining various components is often adopted. Usually, two or left and right sides are formed first, and then the cabinet is formed, or the appearance requirements are met first, and then the supports inside the cabinet are connected. The length of the parts forming each edge of the cabinet must be correct (tolerance is negative) to ensure the geometric size and overall shape requirements. For both sides of the cabinet, considering the need for arrangement, there is no bulge in the middle.
In addition, from the perspective of installation, the bottom cannot sink. In the layout and installation, the foundation level is the prerequisite, but there are certain errors in the degree of squareness and the low-voltage switchgear itself. In the layout process, the level difference should be offset as much as possible instead of causing the accumulation of the difference, because the accumulation of the difference will cause the cabinet body to deform and affect the wire connection and cause the displacement of the component installation, stress concentration and even affect the electrical life. Therefore, when arranging, it is recommended to use the highest point of the foundation as the installation reference point, and then gradually arrange the positive expansion at the bottom. Under ideal dryness and predictable conditions, it is also possible to expand the drainage from the middle to both sides to make the cumulative difference even.
In order to easily adjust and offset the accumulation of tolerances, the width and tolerance of the cabinet are both negative. After the combination of various components of the low-voltage switchgear is completed, plastic surgery should be performed as needed to meet the size requirements of each part. For cabinets that are finalized or mass-produced, full consideration should be given to the use of tool kits to ensure the correct and unified structure. The basic surface of the jacket is used appropriately to facilitate the removal of various positioning blocks in the jacket. For the outer door and other doors of the container, because they are easily affected by transportation and installation, they are usually adjusted uniformly during the installation process.
Withdrawal:
The extraction is composed of a fixed cabinet and a movable device equipped with switches and other main electrical equipment. The movable part should be light and handy when moving, and the positioning must be reliable after it is moved, and the drawers of the same type and specification can be reliably exchanged. Part of the processing method in the extraction is similar to that in the fixed formula. However, due to exchange requirements, the accuracy of the cabinet must be improved, and sufficient adjustments must be made to the relevant parts of the structure. As for the movable equipment part, the main components must be able to be replaced and reliably installed, so it must have higher mechanical strength and higher precision, and the relevant parts must have sufficient adjustments.
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