Solid Copper Plates for Current Input Converter
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Solution Overview
Problem
Current current input converters for protective relay apparatuses face challenges in downsizing and reducing resistance from the input unit to the primary side of the transformer, leading to increased size and complexity, while also being prone to wiring errors due to the need for extensive wiring and patterned conductors.
Innovation Solution
A current input converter design that uses solid copper metal plates to connect the terminal table directly to the primary-side coil of the transformer, reducing the need for extensive wiring and patterned conductors, and incorporating a combination of first and second metal plates with different shapes to ensure efficient current transfer and minimize space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wiring with thick leads or patterned conductors is used to connect terminal table to transformer primary side, then excessive current tolerance is ensured, but device size increases and assembly complexity increases
Solution Approach 1:
The terminal table and transformer primary side are merged into a single integrated structure, eliminating the need for separate thick leads or wide patterned conductors. The connection path is built-in through the PCB layer structure itself, combining the functions of terminal connection, current conduction, and structural support into one unified component.
Solution Approach 2:
A metal plate is introduced as an intermediary component between the terminal table and transformer primary side. This metal plate serves as a low-resistance connection path that ensures excessive current tolerance while requiring minimal space, mediating between the terminal table and transformer without needing extensive wiring space.
2Reliability
If wiring with thick leads is used to ensure excessive current tolerance, then current capacity is sufficient, but assembly work complexity increases and wiring errors may occur
Solution Approach 1:
The terminal table and transformer primary side are merged into a single integrated structure, eliminating the need for separate thick leads or wide patterned conductors. The connection path is built-in through the PCB layer structure itself, combining the functions of terminal connection, current conduction, and structural support into one unified component.
Solution Approach 2:
The integrated terminal table structure provides self-aligning connection paths to the transformer primary side through the PCB layers. The metal plate and PCB structure automatically guide the connection, eliminating the need for manual wiring operations and reducing assembly complexity while ensuring proper electrical connections.
3Reliability
If patterned conductors with sufficient width are used on PCB, then current tolerance is ensured, but PCB size increases and pattern design freedom is limited
Solution Approach 1:
The terminal table and transformer primary side are merged into a single integrated structure, eliminating the need for separate thick leads or wide patterned conductors. The connection path is built-in through the PCB layer structure itself, combining the functions of terminal connection, current conduction, and structural support into one unified component.
Solution Approach 2:
A metal plate is introduced as an intermediary component between the terminal table and transformer primary side. This metal plate serves as a low-resistance connection path that ensures excessive current tolerance while requiring minimal space, mediating between the terminal table and transformer without needing extensive wiring space.
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
This design allows for a compact size, improved work efficiency by reducing wiring errors, and enhanced reliability by ensuring excessive current tolerance without relying on extensive pattern widths or thick leads, thus simplifying assembly and reducing the risk of errors.
Implementation Method 1
a transformer which electrically isolates the input current taken in by the terminal table and converts the input current into a predetermined analog signal
Implementation Method 2
uses solid copper metal plates to connect the terminal table directly to the primary-side coil of the transformer, reducing the need for extensive wiring and patterned conductors
Data Source
AI summary
According to one embodiment, a current input converter includes a first metal plate having a solid shape, which has one end attached to the terminal table and one other end attached to one end of a primary-side coil of the transformer, and connects the terminal table and the one end of the primary-side coil of the transformer to each other, and a second metal plate having a solid shape, which has one end attached to the terminal table and one other end attached to one other end of the primary-side coil of the transformer, and connects the terminal table and the other end of the primary-side coil of the transformer to each other.