Sliding Grounding Assembly for Safe High-Voltage Discharge
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Solution Overview
Problem
Existing electrical assemblies lack a reliable and efficient mechanism for safely grounding and ungrounding electrical devices, particularly in high voltage applications, which poses safety risks and inefficiencies during maintenance and repair.
Innovation Solution
A grounding mechanism comprising a support longitudinal member with a switch contact member that slides between positions to connect or disconnect from an electrical terminal, allowing for safe grounding and ungrounding, with an actuator for controlled movement and a modular design for multiple devices, accommodating various layouts and tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grounding mechanism is added to electrical assemblies, then operator safety is improved, but device complexity increases
Solution Approach 1:
The grounding mechanism is designed as a separate, modular assembly that can be independently attached to electrical devices. The support longitudinal member, switch contact member, and actuator form a distinct unit that interfaces with the electrical device through standardized connections, allowing the grounding function to be added without redesigning the entire electrical assembly.
Solution Approach 2:
The switch contact member is designed to automatically engage with the electrical terminal when the support longitudinal member is in the grounded position, and automatically disengage when moved to the ungrounded position. The actuator provides automatic actuation of the sliding motion, reducing the need for manual intervention and complex control systems.
2Reliability
If a sliding mechanism is used for grounding, then grounding reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The switch contact member incorporates a resilient element that provides compliance and tolerance compensation during the sliding engagement with the electrical terminal. This resilient feature absorbs manufacturing variations and ensures reliable electrical contact without requiring extremely tight tolerances on the sliding surfaces.
Solution Approach 2:
The design allows for adjustment of the switch contact member position along the support longitudinal member, enabling fine-tuning of the engagement parameters. This adjustability compensates for manufacturing variations and ensures optimal contact pressure and alignment without requiring ultra-precise manufacturing.
3Ease of repair
If the grounding mechanism is made modular for easy removal, then ease of repair is improved, but connection reliability may worsen
Solution Approach 1:
The grounding mechanism is designed as a modular assembly that can be easily detached from the electrical device while maintaining reliable connections during operation. The standardized interface between the support longitudinal member and the electrical device allows for simple removal and reinstallation without compromising the integrity of electrical connections when assembled.
Solution Approach 2:
The switch contact member is pre-configured with the resilient element and grounding connection established before the device is put into service. This preliminary setup ensures that the connection is already optimized for reliability, and subsequent removal and reinstallation follows a standardized procedure that maintains this reliability.
4Reliability
If visual status indication is provided, then operator safety is improved, but device complexity increases
Solution Approach 1:
The visual status indication system uses color-coded elements on the support longitudinal member or actuator to clearly indicate whether the grounding mechanism is in the grounded or ungrounded position. This simple color-based indication system provides immediate visual feedback to operators without requiring complex electronics, lights, or control systems.
Solution Approach 2:
The visual status indication is passively provided by the position of the support longitudinal member or actuator itself, or by simple visual elements that automatically reflect the grounding state. This self-indicating feature requires no additional power source, control logic, or maintenance, and integrates seamlessly into the existing grounding mechanism structure.
Data Source
AI summary
An electrical assembly including a grounding mechanism and an electrical device, the grounding mechanism including a support longitudinal member and a switch contact member, the switch contact member arranged in or on the support longitudinal member, the switch contact member configured to be connected in use to ground, the electrical device including an electrical terminal, wherein the support longitudinal member is configured to be slidable between: a first position in which the switch contact member is separated from the electrical terminal so that the switch contact member is electrically disconnected from the electrical device and a second position in which the switch contact member is in contact with the electrical terminal so that the switch contact member is electrically connected to the electrical device.