Switchgear Spout Base Segmentation for Narrower Housing
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Solution Overview
Problem
Current switchgear spout designs require a larger cross-sectional area for current transformers, leading to wider switchgear housing enclosures, which is undesirable, and there is a need for a separable spout assembly with a reduced cross-sectional area to accommodate smaller current transformers.
Innovation Solution
A spout assembly comprising a spout and a spout base with a smaller cross-sectional area, where the spout base supports current transformers with a smaller cross-sectional area than the spout, allowing for a narrower switchgear housing and compatibility with existing vacuum circuit interrupters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spout has a large cross-sectional area to enclose electrical couplings, then the electrical couplings are properly enclosed, but the current transformers require a larger cross-sectional area which increases the switchgear housing width
Solution Approach 1:
The spout is divided into two distinct components: a spout body with a larger cross-sectional area for enclosing electrical couplings, and a spout base with a smaller cross-sectional area for supporting current transformers. This segmentation allows each component to be optimized for its specific function, enabling the use of smaller current transformers and reducing the overall switchgear housing width.
Solution Approach 2:
The invention transitions from a unitary spout design to a separable spout assembly design, adding the dimension of modularity. The spout body and spout base can be separately manufactured and assembled, allowing for optimized current transformer sizing independent of the electrical coupling enclosure requirements.
2Device complexity
If the spout is unitary with the current transformer support surface, then the structure is simplified, but the current transformers must have a larger cross-sectional area matching the spout size
Solution Approach 1:
The unitary spout is segmented into a spout body and a spout base that can be separately manufactured and assembled. The spout base with its smaller cross-sectional area is specifically designed to support current transformers, allowing them to be smaller than they would be if supported by the full spout body cross-section.
3Area of stationary object
If the spout assembly is separable, then smaller current transformers can be used, but the assembly complexity increases
Solution Approach 1:
The spout assembly is segmented into removable components (spout body and spout base) that can be assembled and disassembled. This segmentation enables the use of smaller current transformers on the spout base while maintaining a relatively simple overall assembly process through standardized mounting interfaces.
Data Source
AI summary
A spout assembly is provided. The spout assembly includes a spout and a spout base. The spout base has a cross-sectional area that is smaller than a spout sized to enclose an electrical switching apparatus electrical coupling. That is, the spout base includes a CT support surface with a cross-sectional area that is smaller than the spout cross-sectional area. Current transformers are disposed upon the spout base CT support surface.