Rotatable Busbar Bushing Casing for Connector Orientation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing busbar pass-through solutions for electrical transformers are cumbersome and difficult to install, especially when multiple busbars are mounted side by side, due to large protective casings that interfere with operators and restrict cable orientation.
Innovation Solution
A busbar pass-through design featuring a secondary protective casing with a slot for an intermediate conductive part, a blocking member for rotational alignment, and separate protective covers for the connector and cable, allowing for easier installation and orientation of connectors around the axis of rotation, with a flexible sheath for sealing the conductive cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective casing in two half-shells is used to house the connector and conductive bar, then the connector is protected, but the overall size becomes large and installation becomes difficult when multiple busbars are mounted side by side
Solution Approach 1:
The protective casing is divided into two separate casings: a first protective casing for the conductive bar and a second protective casing for the connector. This segmentation allows each casing to be optimized independently and reduces the overall space required during installation, while still providing comprehensive protection for both components.
Solution Approach 2:
The second protective casing is designed to rotate around the axis of the conductive bar, adding a rotational degree of freedom. This allows the connector to be oriented in different directions after the conductive bar is installed through the wall, providing flexibility in cable routing without requiring a larger overall structure.
2Reliability
If a fixed protective casing is used, then the connector is protected, but the cable orientation is restricted and cannot be freely adjusted
Solution Approach 1:
The second protective casing is designed with rotational capability around the conductive bar axis, transforming it from a static structure to a dynamic one. This allows the connector to be positioned at different angular orientations to accommodate various cable routing requirements, while the casing still provides full protection for the connector components.
3Reliability
If a large protective casing is used to house both the conductive bar and connector, then both components are protected, but the casings of neighboring bars interfere with operators during installation
Solution Approach 1:
By separating the protective casings for the conductive bar and connector into two distinct units, the overall footprint during installation is reduced. The first casing (for the conductive bar) can be installed through the wall with minimal clearance requirements, while the second casing (for the connector) can be attached and rotated in a more accessible position, reducing interference between neighboring busbars.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a busbar bushing of the type comprising: a longitudinal busbar (2); a fitting (4) for holding the busbar (2) in place when passing through a wall (P), the fitting (4) being electrically insulating; a central casing (54) for protecting the exposed end (10) of the busbar (2), which projects on one side of the fitting (4); at least one connector member (56) provided for electrically connecting the exposed end (10) of the busbar (2) to an electrically conducting cable, characterized in that it includes at least one secondary protective casing (58) in which most of the connector member (56) is housed, the connector member (56) being capable of occupying a number of angular positions about a rotation axis (X) relative to the exposed end (10) of the busbar (2), the secondary protective casing (58) being able to occupy a number of angular positions around the same rotation axis (X) relative to the central protective casing (54).