Low Voltage Switchboard Partition Wall Busbar Support
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Solution Overview
Problem
Existing low voltage switchboards have drawbacks such as high component complexity and cost due to numerous structural components required for supporting busbars and creating insulating partitions, difficulty in withstanding electrodynamic stresses, and risks of accidental arcs during apparatus insertion/extraction, as well as cumbersome assembly and safety locking issues.
Innovation Solution
A low voltage switchboard design with a partitioning and insulating wall that supports busbars and separates compartments, featuring retaining and supporting means, insulation-enhancing openings, and mechanical locking mechanisms to prevent apparatus insertion/extraction when contacts are closed, reducing component count and enhancing safety and assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional supporting devices are used to support busbars and create insulating partitions, then the structural strength and insulation are ensured, but the number of components increases and assembly complexity increases
Solution Approach 1:
The partition wall and busbar supporting device are merged into a single integrated component. The partition wall includes integrated supporting means such as brackets or arms that extend from the wall surface to support the busbars, eliminating the need for separate supporting devices and reducing the total number of components while maintaining both insulation and structural strength functions
Solution Approach 2:
The partition wall is designed to perform multiple functions simultaneously: it provides electrical insulation between live and neutral busbars, creates physical separation between compartments, and through its integrated supporting means, provides mechanical support for the busbars. This multi-functional design reduces component count while ensuring reliability
2Strength
If multiple separate components are used for supporting busbars and creating partitions, then structural requirements are met, but production cost and assembly time increase
Solution Approach 1:
By combining the partition wall and busbar supporting device into one integrated component, the assembly process is simplified. The supporting means are already attached to the partition wall during manufacturing, so during installation only a single component needs to be positioned and fixed, significantly reducing assembly time and labor costs while maintaining structural support capability
3Reliability
If conventional insulating partitions are used, then separation between busbar compartments is achieved, but the risk of accidental arcs during apparatus insertion/extraction remains
Solution Approach 1:
The partition wall acts as an intermediary insulating barrier between the live busbar compartment and the apparatus compartment. By positioning the supporting means on the partition wall rather than directly in the busbar compartment, an additional insulating layer is introduced that prevents accidental arcs during apparatus insertion or extraction operations
Solution Approach 2:
The partition wall creates a spatial separation in the third dimension, establishing a physical and electrical barrier between compartments. This dimensional separation ensures that even during apparatus manipulation, the insulating partition maintains adequate clearance and prevents arc formation between live parts and apparatus terminals
4Strength
If numerous constructional components are used, then structural requirements are satisfied, but manufacturing cost increases
Solution Approach 1:
The integration of the partition wall and busbar supporting device reduces the total component count, which directly lowers manufacturing costs. Fewer components mean reduced material costs, simplified production processes, and reduced assembly operations, while the integrated design maintains all necessary structural integrity functions through properly engineered supporting means
Data Source
AI summary
A low voltage electrical switchboard comprising a supporting structure having vertical uprights and horizontal crossbars and further comprising a busbar compartment housing one or more busbars and an apparatus compartment housing one or more electrical apparatuses, said busbar compartment and said apparatus compartment being separated by a partitioning and insulating wall, characterized in that said partitioning and insulating wall has a first surface facing said busbar compartment which is provided with a plurality of retaining and supporting means for said busbars, and a second surface facing said apparatus compartment which is provided with a plurality of openings for insertion/extraction of first connection means between said busbars and said one or more electrical apparatuses through said partitioning and insulating wall, said first connection means being provided with first insulation means that cooperate with said partitioning and insulating wall to increase the distance in air between the phases during insertion/extraction of said connection means, said low voltage switchboard being further provided with mechanical locking means for locking said one or more electrical apparatuses and preventing their insertion/extraction into/from an operating position in contact with said busbars under predetermined conditions.