Insulating Adapter for Plug-in Busbar Contact Protection
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Solution Overview
Problem
Existing plug-in systems for protective devices lack reliable contact protection, especially during maintenance and repair, as they can be operated without protective covers, exposing technicians to live busbars, and have a high susceptibility to faults due to numerous electrical components.
Innovation Solution
A plug-in system with an upper part made of electrically insulating material that covers the busbars, ensuring contact protection on all sides and preventing accidental contact, featuring non-destructive detachment and snap-connection mechanisms to ensure safety during operation and maintenance, with protective devices only pluggable when the upper part is installed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the adapter part is removed for installation, then the busbars are exposed, but this creates a risk for the installer to come into contact with the live busbars
Solution Approach 1:
The system is divided into a base part containing the busbars and an adapter part that can be detached. The adapter part is segmented into modular components including cover plates for different slot configurations. This segmentation allows the cover plates to remain in place on the base part even when the adapter part is removed, maintaining contact protection during installation while enabling easy attachment and removal of the adapter part.
Solution Approach 2:
Cover plates made of electrically insulating material serve as intermediary elements between the installer and the live busbars. These cover plates are permanently mounted on the base part and act as a persistent protective barrier. When the adapter part is removed for installation work, the cover plates remain in position to prevent accidental contact with the busbars, thus mediating between the need for easy installation and contact safety.
2Object-affected harmful factors
If insulating plates are used to cover unused slots, then contact protection is provided, but the system does not recognize whether slots are occupied or free
Solution Approach 1:
The system uses the adapter part itself to indicate slot occupancy status through a microswitch mechanism. When protective devices are inserted into the adapter part, they automatically actuate the microswitch to signal the control unit about the occupied slots. This self-service mechanism eliminates the need for separate recognition systems while maintaining reliable contact protection through the integrated safety concept.
3Adaptability or versatility
If the adapter part contains electrical contacts and microswitches, then functional capabilities are enabled, but the susceptibility to faults and costs increase
Solution Approach 1:
The microswitch and electrical contacts are extracted from the base part and relocated to the adapter part. This extraction allows the base part to have a simpler, more reliable structure with fewer fault-prone components. The adapter part becomes a replaceable module containing the electronic components, so if faults occur, only the adapter part needs to be replaced rather than the entire system. This also reduces costs by allowing selective replacement of only the necessary components.
Data Source
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AI summary
The invention relates to a top part (2) for a plug-in system (1) and a plug-in system (1) as such. The plug-in system (1) has a bottom part (3) on which busbars (5) can be arranged, and on a top part (11) opposite the bottom part (12) a top part (2) made of electrically insulating material which can be detached from the bottom part (3) without damage. Protective devices (4) with electrical contacts (42) can be arranged on the plug-in system (1). The top part (2) has openings (27) through which the busbars (5) can be directly contacted by the electrical contacts (42) of the protective devices. The openings (27) are designed such that the plug-in system (1) is touch-proof according to IP XXB. The upper part (2) and lower part (3) can be snapped into each other or screwed together in such a way that the upper part (2) can only be detached from the lower part (3) from the underside (12) of the plug-in system.