Insulated Earthing Switch Flange for Outdoor Switchgear Durability
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Solution Overview
Problem
Existing gas insulated switchgear assemblies have limited resilience and environmental durability due to the mechanical resistance limitations of plastic insulators, particularly in outdoor applications.
Innovation Solution
The use of a metallic insulator flange with a dielectric layer in the earthing switch of air or mixed air and gas insulated switchgear assemblies, which provides high mechanical resistance and can be easily recycled, enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic insulator is used in the earthing switch, then the device can be manufactured with ease and lower cost, but the mechanical resistance and environmental durability are limited
Solution Approach 1:
The patent applies composite materials by combining a metallic body with a dielectric insulating layer to create the insulator flange. This composite structure provides both the mechanical strength of metal and the electrical insulation properties of the dielectric material, resolving the contradiction between ease of manufacture and mechanical resistance.
2Ease of manufacture
If a plastic insulator is used in the earthing switch, then the manufacturing process is simplified, but the resilience to outdoor applications and environmental durability are reduced
Solution Approach 1:
The composite structure of metallic body with dielectric insulating layer provides superior environmental durability and resilience to outdoor applications while maintaining manufacturing feasibility. The metal component offers structural integrity and weather resistance, while the dielectric layer provides electrical insulation.
3Strength
If a metallic insulator flange with dielectric layer is used, then the mechanical resistance and environmental durability are significantly increased, but the device complexity increases
Solution Approach 1:
While the composite material structure increases complexity compared to simple plastic insulators, the patent integrates this complexity into a single insulator flange component that provides both mechanical strength and electrical insulation, thereby managing the complexity increase while achieving superior performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly increases the resilience and environmental durability of the earthing switch, preventing mechanical failure and allowing for effective outdoor operation with improved insulation properties.
Implementation Method 1
an insulator flange (16) comprising a metallic body and a dielectric insulating layer on the metallic body
Data Source
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AI summary
The invention concerns an air insulated or mixed air and gas insulated switchgear assembly (1) comprising a switchgear (2) and an earthing switch (10). The switchgear (2) comprises a switchgear housing (3). The earthing switch (10) comprises a switch housing (13). According to the invention, the earthing switch (10) comprises an insulator flange (16) comprising a metallic body and a dielectric insulating layer on the metallic body. The switch housing (13) is mechanically connected to the switchgear housing (3) through the insulator flange (16).