Fused Load Disconnector with Rotatable Base and Adapter
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Solution Overview
Problem
Fuse switch disconnectors lack the ability to adjust the connection direction on the fly to accommodate varying requirements during assembly, limiting their adaptability to different mounting configurations.
Innovation Solution
A fuse switch disconnector design where the disconnector base can be rotated 180°, allowing the access contacts to be positioned either at the top or bottom, with a pivotable cover and an adapter system that enables the lower part of the isolator to connect in two different directions, and includes removable and fixed contact protection hoods with integrated arcing chutes for directional flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the disconnector base has a fixed connection direction, then the structure is simple and manufacturing is easy, but the adaptability to different mounting configurations is limited
Solution Approach 1:
The adapter is designed with asymmetric opening arrangements - a first opening on one side and a second opening on the opposite side, allowing the disconnector base to be mounted in different directions (first connection direction or second connection direction) by rotating the adapter 180 degrees, thereby achieving adaptability without complex reconfiguration mechanisms
Solution Approach 2:
The adapter serves multiple functions: it provides mechanical support for the disconnector base, enables directional rotation for different mounting configurations, and maintains electrical connections through its contact elements. This multi-functionality allows a single component to achieve adaptability without proportionally increasing overall device complexity
2Adaptability or versatility
If the disconnector base is made rotatable by 180°, then the adaptability to different mounting configurations is improved, but the device complexity increases
Solution Approach 1:
The asymmetric opening design in the adapter allows simple 180-degree rotation capability - the first opening and second opening are positioned on opposite sides, enabling the disconnector base to switch between two mounting directions without requiring complex rotational mechanisms, motors, or control systems
Solution Approach 2:
Instead of designing a complex mechanism to achieve rotation, the invention inverts the approach by designing the adapter with pre-positioned asymmetric openings that naturally accommodate both mounting orientations, making the rotation capability inherent in the static structure rather than requiring active mechanical intervention
3Reliability
If contact protection hoods are provided for both orientations, then the reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The contact protection hoods are extracted as separate, removable components rather than being integrated into the main disconnector base structure. This allows the hoods to be manufactured independently and attached only when needed for specific mounting orientations, simplifying the manufacturing of the main body while providing protection when required
Solution Approach 2:
The contact protection hoods are designed to be dynamically configurable - they can be attached or removed based on the mounting orientation and operational requirements. This dynamic approach allows the system to provide enhanced contact protection when needed while maintaining manufacturing simplicity by not permanently integrating complex protective structures into the base design
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
Enables flexible mounting of the disconnector base on an adapter with different connection directions, ensuring reliable electrical contact and arc suppression regardless of the orientation, enhancing adaptability and usability.
Implementation Method 1
the disconnector base, which is fixed by a housing, can be displaced by 180° in the connection direction
Implementation Method 2
a cover is mounted pivotably on the housing, and the cover can be mounted rotated by 180° with respect to the lower part of the isolator
Implementation Method 3
a group of receiving contacts in the lower part of the isolator is designed in the form of plug-in contacts with a foot section protruding from the housing, which can be inserted in the openings which are shaped symmetrically to the transverse axis of the adapter
Implementation Method 4
The removable contact protection cover, like the fixed contact protection cover, is equipped with integrated arcing chutes so that the required arcing chutes are available at the required location regardless of the connection direction of the lower part of the isolator
Data Source
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AI summary
The present invention relates to a fused load disconnector with a disconnector bottom and a pivotable cover arranged thereon, with holder contacts for holding the contacts of fuse units, wherein a first contact group is designed as plug contacts with a base section leading through the disconnector bottom and protruding from the disconnector bottom, wherein the disconnector bottom can be placed on an adapter in different connecting directions, wherein the adapter comprises a plurality of contact openings for the alternative guidance of the base section and a contact rail running in the region of the contact openings, the first contact group and a second contact group, connected to the input connections, being covered by a first and a second contact guard cap, wherein the first and second contact guard caps each comprise insertion slits and integrated light arch quenching chambers, wherein the second contact guard cap is designed such that it can be removed from the disconnector bottom.