Switchgear Junction Box Structure for Lateral Drawer Busbar Access
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Solution Overview
Problem
Existing junction boxes in switchgears occupy narrow spaces, making installation and maintenance difficult due to limited wiring space and inflexible drawer arrangement.
Innovation Solution
A junction box design with a base, output end featuring lateral supply busbars, and a protective housing with splicing modules that allow drawers of different specifications to be connected at any position, optimizing wiring space and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cables are used to distribute power from the busbar to multiple drawers, then power distribution is achieved, but the space inside the switchgear becomes narrow and installation/maintenance becomes difficult
Solution Approach 1:
The junction box is divided into multiple splicing modules that can be independently assembled and configured. Each module contains specific busbars and connection terminals, allowing the power distribution system to be segmented into manageable units that optimize space utilization and facilitate installation与维护
Solution Approach 2:
The patent transitions from traditional cable-based power distribution to a busbar-based system that utilizes the lateral direction for power distribution. This dimensional change allows for more efficient space utilization within the switchgear, providing wider wiring spaces and improving accessibility for installation and maintenance operations
2Ease of manufacture
If traditional junction box design is used, then power supply to drawers is achieved, but drawer arrangement flexibility is limited
Solution Approach 1:
The junction box design incorporates adjustable and reconfigurable splicing modules that can be dynamically arranged to accommodate different drawer configurations. The lateral arrangement of supply busbars and modular splicing structure enables flexible adaptation to various drawer specifications and positions, enhancing the overall versatility of the switchgear system
Solution Approach 2:
The splicing modules are designed with universal connection interfaces and standardized busbar configurations that can serve multiple drawer types and power distribution requirements. This multi-functional design allows the same junction box structure to accommodate different drawer arrangements and specifications
3Productivity
If wiring space is optimized, then installation density improves, but insulation protection becomes more challenging
Solution Approach 1:
The protective housing is designed with nested splicing modules that contain busbars and wiring components within enclosed compartments. This nesting structure provides effective insulation protection while maximizing the utilization of available space, allowing for higher installation density without compromising electrical safety
Data Source
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AI summary
According to an embodiment of the present disclosure, there is provided a junction box for a switchgear and a switchgear. The junction box includes: a base (1), arranged within the switchgear; an output end (2), coupled to the base (1), and comprising: a plurality of supply busbars (21), each arranged within the base (1) in a lateral direction, and adapted to be electrically connected to a primary incoming plug (61) of a plurality of drawers (6) at any position along the supply busbar (21) in the lateral direction to allow power supply to the drawer (6); an input end, comprising a plurality of adapter pieces (22), respectively coupled to the supply busbar (21), and electrically connected to the primary plug-in within the switchgear; and a protective housing (23), arranged outside the plurality of supply busbars (21), and adapted to provide insulation protection to the plurality of supply busbars (21). The switchgear includes: a cabinet (7), a junction box arranged within the cabinet (7), and a drawer (6) coupled to the junction box. Thereby, the installation density of the drawer (7) can be increased, the spatial layout in the switchgear can be optimized, and the convenience of installation and maintenance of the facilities in the switchgear can be improved.