High Voltage Bushing Insulation with Silicone Filled Recess
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Solution Overview
Problem
Existing high-voltage bushings require significant design effort and additional protective measures, such as insulation gas or oil, to withstand a 20kV test voltage, increasing costs and complexity, especially for compliance with IEEE STD C57.19.01-2000 standards.
Innovation Solution
A high-voltage bushing with a measuring connection recess filled with insulating material, featuring a silicone-based insulating material and a soldered contact means, such as a stranded wire with silicone insulation, ensuring reliable electrical contact and meeting the 20kV test voltage requirement without additional protective aids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective gas or insulating oil is used to ensure insulation for 20kV test voltage, then insulation reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates the need for protective gas or insulating oil by using a solid insulating material (silicone) that is integrated into the bushing structure. The measuring connection recess is directly filled with the insulating material, removing the separate protective medium and its associated complexity.
Solution Approach 2:
The patent uses a solid insulating material (silicone) that is inexpensive, non-volatile, and does not require maintenance unlike protective gases or oils that can escape or degrade over time. This eliminates the need for special precautions during assembly, maintenance, and disposal.
2Reliability
If protective gas or insulating oil is used to ensure insulation for 20kV test voltage, then insulation reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent employs silicone as an insulating material that is inexpensive, readily available, and does not require special handling or disposal procedures. This directly reduces manufacturing costs compared to protective gases or oils that require specialized containment and maintenance infrastructure.
Solution Approach 2:
The insulating material is integrated directly into the bushing structure, merging the insulation function with the structural component. This eliminates the need for separate protective gas systems or oil-filled chambers, reducing both material costs and manufacturing complexity.
3Reliability
If protective gas is used for insulation, then insulation performance is improved, but assembly and maintenance complexity increases
Solution Approach 1:
The patent removes the need for protective gas by using solid insulating material that is permanently integrated into the bushing. This eliminates the complexity of gas-filled chambers, sealing requirements, and gas handling procedures during assembly and maintenance.
Solution Approach 2:
The solid insulating material provides self-contained insulation that requires no external gas supply systems, pressure monitoring, or special maintenance procedures. The bushing is self-sufficient with built-in insulation that cannot escape or degrade like gas or oil systems.
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
This solution simplifies the design process while ensuring effective insulation and compliance with the IEEE STD C57.19.01-2000 standard, reducing costs and assembly complexities by eliminating the need for protective gases and oils.
Implementation Method 1
An area is filled with an insulating material between the contact means and the measuring connection recess
Implementation Method 2
the insulating material contains at least a proportion of silicone. This is an advantage because silicone has the necessary dielectric strength
Data Source
Figure 1~2
Figure 3~6
Figure 7~8
AI summary
The present invention relates to a high-voltage bushing (1) with a measuring connection recess (14) on which a voltage divider tap (3) with a contact means (7) is arranged, characterized in that a region between the contact means (7) and the measuring connection recess (14) is filled with an insulating material (5). The invention further relates to a manufacturing method for a high-voltage bushing (1) with a voltage divider tap (3).