Flap Seating Indicator for High-Voltage Connectors
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Solution Overview
Problem
Existing seating indicators for high-voltage electrical connectors, such as loadbreak and deadbreak connectors, are difficult to view from a distance, making it challenging to determine if a proper connection has been made due to their low visibility, especially at high voltages.
Innovation Solution
The implementation of flap seating indicators with brightly colored, pivotably connected flaps that attach to the elbow cuff or bushing insert, ensuring the indicating surfaces are visible from at least five feet and preferably more than ten feet away, providing a clear visual confirmation of proper connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional indicator bands are used on bushing inserts, then the structure remains simple, but the visibility from distance is insufficient
Solution Approach 1:
The indicator flaps are designed to be movable rather than static. When the bushing insert is properly inserted into the elbow connector, the flaps pivot from a retracted position to an extended position, dynamically changing their visibility state based on the connection status. This dynamic behavior provides clear visual indication without requiring complex additional components.
Solution Approach 2:
The indicator flaps incorporate brightly colored indicating surfaces that are highly visible from distance. The use of contrasting colors on the flaps enhances their visibility against the background of the connector components, allowing inspectors to easily detect proper assembly from 8-10 feet or more away.
2Illumination intensity
If indicator bands are made more visible through larger size or brighter color, then visibility improves, but the indicator may become more noticeable before connection is complete, potentially indicating premature assembly status
Solution Approach 1:
The flaps transition from a hidden/retracted state during assembly to an extended/visible state only when proper connection is achieved. This dynamic behavior ensures that the bright visual indication is displayed at the appropriate moment - when the bushing insert is fully and correctly inserted - rather than during the assembly process itself.
Solution Approach 2:
The indicator flaps provide visual feedback about the completion status of the connection. The flaps extend and become highly visible only when the bushing insert is properly seated, giving immediate visual confirmation to the inspector that the assembly is complete and correct, eliminating ambiguity about connection status.
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 enhances visibility of the connection status, allowing users to verify proper assembly from a safe distance, even at high voltages, thereby ensuring safety and reliability in the connection of loadbreak and deadbreak connectors.
Implementation Method 1
Each of the plurality of flaps has first and second sections that are pivotably connected. The first section attaches to the body and the second section has an indicating surface. When a bushing insert is properly inserted into the elbow connector, the second section of each of the plurality of flaps pivots so that the indicating surfaces of the flaps face the elbow connector.
Data Source
AI summary
A flap seating indicator for loadbreak and deadbreak connectors that include a substantially round ring-shaped body and a plurality of flaps located around the circumference of the body and extending from one of the side edges. Each of the plurality of flaps has a first section that attaches to the body and is pivotably connected to a second section that has an indicating surface. The seating indicator is attached to an inner surface of an elbow cuff lip on an elbow connector. When a bushing insert is properly inserted into the elbow connector, the second section of each of the plurality of flaps pivots so that the indicating surfaces of the flaps face the elbow connector.