Integrated Sensing Assembly for Circuit Breaker
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Solution Overview
Problem
Traditional electrical switching apparatus, such as circuit breakers, face challenges with space efficiency and assembly complexity due to separate components for current sensing, voltage sensing, and power harvesting, leading to increased volume and wire management issues.
Innovation Solution
A compact sensing assembly integrated into a single unit within the circuit breaker, comprising a housing with a power harvester, current sensor, and internal voltage sensing circuit connected to a bus bar, which performs all three functions, reducing space requirements and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate components for current sensing, voltage sensing, and power harvesting are used, then each component can be optimized independently, but the overall device volume increases and wire management becomes complex
Solution Approach 1:
The patent combines current sensing, voltage sensing, and power harvesting functions into a single integrated sensing assembly. The housing contains all three functional components (current sensor, voltage sensing circuit, and power harvester) in one unified structure, eliminating the need for separate component housings and reducing overall device volume while maintaining individual component optimization.
Solution Approach 2:
The sensing assembly housing serves multiple functions simultaneously: it provides structural support, houses the current sensor, accommodates the voltage sensing circuit, and contains the power harvester. This multi-functional design reduces the number of separate components needed and simplifies the overall circuit breaker structure.
2Ease of repair
If separate components for current sensing, voltage sensing, and power harvesting are used, then each component can be independently replaced, but assembly complexity and assembly time increase
Solution Approach 1:
The sensing assembly is designed as a segmented modular unit that can be independently installed and removed from the circuit breaker. While internal components remain integrated, the entire sensing assembly functions as a replaceable module, maintaining ease of repair while reducing assembly complexity compared to installing multiple separate components.
3Adaptability or versatility
If separate components are used, then functional optimization is easier, but wire management and space utilization deteriorate
Solution Approach 1:
By merging all sensing and power harvesting functions into a single housing, the patent dramatically reduces wire management complexity. All electrical connections are consolidated within one assembly, eliminating the need for multiple separate wire runs and connection points that would be required for distributed components.
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 integrated sensing assembly allows for a more compact design, efficient wire management, and reduced arcing, while performing voltage sensing in addition to power harvesting and current sensing, thereby enhancing the overall efficiency and assembly ease of electrical switching apparatus.
Implementation Method 1
a power harvester coupled to the housing
Implementation Method 2
a current sensor coupled to the housing
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A sensing assembly (100, 200, 300) is for an electrical switching apparatus (2). The electrical switching apparatus (2) includes a base (4) having a pocket portion (6, 8, 10), and a bus bar (20, 30, 40) coupled to the base (4). The sensing assembly (100, 200, 300) includes a housing (102) coupled to the pocket portion (6, 8, 10), a power harvester (170) coupled to the housing (102), a current sensor (180) coupled to the housing (102), and a voltage sensing circuit located internal with respect to the housing (102) and being structured to be electrically connected to the bus bar (20, 30, 40).