Compact Protective Switch Assembly with Segmented Test Circuit
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Solution Overview
Problem
Existing protective switching devices with narrow designs, typically limited to a maximum width of 18 mm, face challenges in integrating a test circuit device due to the integration of the test function within the residual current tripping device, leading to oversized devices that cannot fit within the specified width.
Innovation Solution
The protective switching device arranges the test circuit device separately next to the residual current tripping device, using a phase separator to electrically isolate it, allowing for a compact design that fits within an 18 mm width housing by positioning the test circuit device on the phase side and the residual current tripping device on the neutral conductor side, enabling a more efficient use of space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the test circuit device is integrated within the residual current tripping device, then the device structure is simplified, but the device width exceeds 18 mm and cannot fit in standard housing
Solution Approach 1:
The device is segmented into two distinct sides: the phase side containing the test circuit device and short-circuit tripping device, and the neutral conductor side containing the residual current tripping device. This segmentation allows each component to be optimally positioned without interfering with others, achieving a compact 18 mm width while maintaining all necessary functions.
Solution Approach 2:
Instead of integrating all components in a single longitudinal direction, the invention utilizes the transverse dimension by dividing the device into phase side and neutral conductor side. This dimensional approach allows the test circuit device to be positioned adjacent to the residual current tripping device without increasing the overall width beyond 18 mm.
2Stability of the object's composition
If the test circuit device is positioned on the residual current tripping device side, then the longitudinal alignment is maintained, but the available space is insufficient for all components within 18 mm width
Solution Approach 1:
The available space is segmented into two distinct regions: phase side and neutral conductor side. This segmentation creates sufficient space for all components by distributing them across different regions rather than competing for the same longitudinal space, thereby maintaining compact dimensions.
Solution Approach 2:
The phase separator acts as an intermediary structure that divides the housing interior into phase side and neutral conductor side. This mediator creates clear spatial boundaries and ensures adequate spacing between components while maintaining the overall compact design within 18 mm width.
3Volume of stationary object
If the phase separator is introduced to divide phase side and neutral conductor side, then space utilization is optimized, but the device complexity increases
Solution Approach 1:
The phase separator serves multiple functions simultaneously: it divides the housing into phase and neutral sides, provides electrical insulation between different potential areas, and acts as a structural support element. This multi-functionality optimizes space utilization while minimizing the increase in device complexity.
Solution Approach 2:
The phase separator is an intermediary structure that efficiently accomplishes multiple tasks: spatial division, electrical isolation, and mechanical support. By using this single intermediary element, the design achieves optimized space utilization without proportionally increasing overall device complexity.
Data Source
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AI summary
The breaker has a switching device (2) for switching an electrical contact. A short-circuit triggering device (3) triggers the switching device in the event of a short circuit. A fault current triggering device (5) triggers the switching device in the event of a fault current and/or a differential current. The devices (2, 3, 5) are consecutively arranged in a longitudinal alignment. A test circuit device (6) is arranged adjacent to the device (5). The breaker is narrowly formed such that it is arranged in a housing of a power circuit breaker (1) with a maximum breadth of 18 millimeter.