Arc Eliminator Earth Contact Movable Ground Member
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Solution Overview
Problem
Existing arc eliminators in distribution boards require unstable ground connections, leading to a high risk of disconnection during mounting and alignment with the ground bus bar, necessitating extra effort and potential instability in contact.
Innovation Solution
A drawer-type arc eliminator with a movable earth contact system, featuring a connecting member and elastic members that ensure reliable contact with the ground bus bar, allowing for easy connection and disconnection without additional mounting effort, and minimizing alignment challenges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ground member or grounding cable is connected to the ground bus bar with a fastening member or screw, then the arc eliminator can be connected to ground, but the connection requires loosening and fastening operations during mounting and carries a high risk of falling out if unstable
Solution Approach 1:
The ground member is designed to be movable rather than fixed, allowing it to automatically move and make contact with the ground bus bar during the insertion process. This dynamic design eliminates the need for separate fastening operations while ensuring reliable electrical contact through the elastic force that maintains continuous pressure between the ground member and ground bus bar.
Solution Approach 2:
The arc eliminator performs its own grounding connection automatically during insertion without requiring external fastening operations. The elastic member provides self-maintaining contact pressure, and the movable ground member self-adjusts to ensure reliable electrical connection with the ground bus bar, making the system self-sufficient for grounding.
2Reliability
If a grounding cable is connected to the ground bus bar and fixed with a screw, then the arc eliminator can be grounded, but extra mounting effort is required and alignment may be difficult
Solution Approach 1:
The ground member is pre-positioned on the arc eliminator body with elastic pre-load, ready to make contact with the ground bus bar. During insertion, the ground member automatically moves into contact position without requiring separate alignment or fastening steps, saving time while ensuring stable connection through the pre-loaded elastic force.
Solution Approach 2:
The grounding connection function is merged with the insertion movement itself. The act of inserting the arc eliminator simultaneously performs both the mechanical installation and the electrical grounding connection, eliminating separate fastening operations and reducing total mounting time while maintaining connection reliability.
3Reliability
If the ground member is fixed, then the connection is stable, but the arc eliminator cannot be easily inserted or removed without disconnection operations
Solution Approach 1:
The ground member transitions from a fixed state to a movable state, allowing it to dynamically adjust during insertion and removal operations. The elastic member enables the ground member to maintain stable contact during operation while automatically disconnecting during removal without requiring manual intervention, achieving both stability and adaptability.
Solution Approach 2:
Instead of making the arc eliminator body movable relative to a fixed ground connection, the invention inverts the approach by making the ground member movable relative to the arc eliminator body. This allows the ground connection to adapt to the insertion/removal movements while maintaining stable electrical contact during operational use.
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 provides a high-reliability connection between the arc eliminator and ground bus bar, ensuring consistent contact and reducing the effort required for insertion and removal, thereby enhancing the stability and efficiency of the arc elimination process.
Implementation Method 1
an elastic member that is installed between the connecting member and the movable ground member and elastically supports the movable ground member
Data Source
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AI summary
The present invention relates to an arc eliminator, and more particularly, to an arc eliminator with an earth contact. An arc eliminator comprises: a housing; an extinguisher installed on the housing; and an earth contact that is installed on the housing and protrudes out from the housing in such a way as to be connected to the ground bus bar provided inside a distribution board when the extinguisher is moved to a first position where the extinguisher is connected to a fixed bus bar provided inside the distribution board, and to be disconnected from the ground bus bar when the extinguisher is moved to a second position where the extinguisher is disconnected from the fixed bus bar.