Busbar Support Structure for Dense Switchgear Phase Separation
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Solution Overview
Problem
Conventional busbar support devices in switchgear are inadequate in reliably fixing busbars, particularly in high-density configurations, and fail to prevent phase-to-phase contact during deformation, posing a safety risk.
Innovation Solution
A device comprising insulating supports with grooves and fixing brackets, along with threaded fasteners and position adjustment means, to securely hold busbars and maintain phase separation, enhancing safety and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional busbar support devices are used, then the structure is simple, but the busbar cannot be reliably fixed and phase-to-phase contact may occur during deformation
Solution Approach 1:
The support device is divided into multiple independent support units, each comprising a support body with a groove for holding the busbar. Each support unit can independently accommodate and constrain the busbar, providing distributed support along the busbar length. This segmentation allows the system to maintain reliability even if one support unit experiences deformation, as other units continue to provide support and prevent phase-to-phase contact.
Solution Approach 2:
The busbar is nested within the groove of the support body, creating a constrained configuration where the busbar is held securely by the support structure. The groove geometry is designed to match the busbar cross-section, providing mechanical interlocking that prevents displacement and deformation. This nesting arrangement ensures reliable fixation while maintaining a compact overall structure.
2Area of stationary object
If busbars are arranged at high density in switchgear, then space utilization is improved, but the risk of phase-to-phase contact during deformation increases
Solution Approach 1:
Each support unit is designed with specific local geometric features, including grooves tailored to the busbar cross-section and positioning elements that provide localized constraint. The support bodies are made of insulating material with appropriate mechanical properties to resist deformation. These local quality enhancements ensure that each support unit effectively prevents phase-to-phase contact at its specific location, enabling high-density arrangement while maintaining safety.
Solution Approach 2:
The support device is designed to preemptively counteract potential deformation and displacement of busbars before phase-to-phase contact can occur. The rigid support bodies with precisely fitted grooves create mechanical constraints that prevent the busbar from deforming into adjacent phases. By providing this preliminary anti-action through the support structure, the system can safely accommodate high-density busbar arrangements without increasing the risk of harmful contact.
Data Source
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AI summary
The present disclosure relates to a device (10) for supporting a busbar, and a switchgear. The device comprises: at least one pair of supports, each pair of supports comprising: a first busbar support (110), comprising a first groove (112) extending through the first busbar support (110) in the thickness direction (Z); and a second busbar support (120), arranged opposite the first busbar support (110) and comprising a second groove (122) extending through the second busbar support (120) in the thickness direction (Z), wherein the first groove (112) and the second groove (122) are arranged opposite each other to form a shape adapted to receive the busbar in the thickness direction (Z), the thickness direction (Z) being parallel to or coincident with a thickness direction (Z) of the busbar; and a first fixing bracket (130), fixed to the at least one pair of supports and configured to support the at least one pair of supports.