Radial Switchgear Mounting Assembly for Load Centers
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Solution Overview
Problem
Conventional load centers and switchgear mounting assemblies are complex, costly, and inefficient due to high part counts, poor mechanical and electrical connectivity, and require large, separate supporting structures, complicating assembly and increasing size.
Innovation Solution
A switchgear mounting assembly for load centers that arranges electrical switching apparatus in a radial array using a base assembly with a central protrusion, radially extending bus bars, and supporting brackets for improved connectivity and reduced footprint, along with minimal fasteners and integrated energy monitoring capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If electrical switching apparatus are arranged in a linear configuration within an elongated rectangular enclosure, then the assembly process follows conventional methods, but the part count is high and the footprint is large
Solution Approach 1:
The patent integrates the base assembly, electrical bus assembly, and bracket into a single unified structure. The base assembly includes an integrated base and bracket portion that forms a cohesive unit, eliminating the need for separate supporting structures and reducing the overall part count while maintaining assembly ease
Solution Approach 2:
The base assembly serves multiple functions simultaneously: it provides structural support, houses the electrical bus assembly, and includes integrated bracket functionality for mounting electrical switching apparatus. This multi-functionality reduces the number of separate components needed
2Ease of manufacture
If electrical switching apparatus are arranged in a linear configuration, then conventional mounting methods are used, but the mechanical and electrical connectivity is poor
Solution Approach 1:
The patent transitions from conventional linear mounting to a radial array configuration where electrical switching apparatus are mounted around the central electrical bus assembly. This dimensional change allows for improved mechanical support and electrical connectivity through the integrated base and bracket structure
Solution Approach 2:
The integrated base and bracket portion acts as an intermediary structure that simultaneously provides mechanical support and facilitates electrical connectivity. The electrical bus assembly is mechanically coupled to this intermediate structure, ensuring both structural integrity and reliable electrical connections
3Strength
If a separate supporting structure is used to support the elongated rectangular enclosure, then the load center can be mounted, but the footprint is large and the structure is complex
Solution Approach 1:
The base assembly and bracket are merged into a single integrated structure that provides both support and mounting functionality. This eliminates the need for separate supporting structures while maintaining the required strength and reducing the overall footprint
Solution Approach 2:
The patent adopts a radial array configuration where electrical switching apparatus are arranged around the central bus assembly rather than in a linear elongated enclosure. This dimensional change reduces the footprint while maintaining structural integrity through the integrated base assembly
Data Source
AI summary
A switchgear mounting assembly for a load center includes a base assembly, an electrical bus assembly, and a bracket. The base assembly includes a base and a central protrusion extending outwardly from the base. Bus bars are electrically connected and mechanically coupled to the central protrusion and include stabs, which extend radially outwardly from the central protrusion. The bracket is coupled to the central protrusion and includes supporting elements. Each supporting element maintains a corresponding electrical switching apparatus in electrical communication with a corresponding one of the stabs. The switchgear mounting assembly is therefore structured to mount the electrical switching apparatus in a radial array extending around the central protrusion.