Power Switchgear Conductive Member Orientation for Relay Interference
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Solution Overview
Problem
The magnetic field generated by conductive members in power switchgear can interfere with the operation of relays, particularly when large currents flow, affecting the switching performance.
Innovation Solution
The power switchgear design includes conductive members with extending portions that are positioned non-overlapping with the relay body, directing the magnetic field away from a parallel alignment with the yokes, thereby reducing the magnetic field's influence on the relay's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the relay terminal and the external terminal are coupled via the conductive member, then the electric component can be attached into the power switchgear, but the magnetic field generated by the conductive member affects the operation of the relay
Solution Approach 1:
The patent introduces a spatial dimension solution by positioning the extending portion of the conductive member in a direction vertical to the first direction (the direction between yokes). This dimensional repositioning ensures that the magnetic field generated by the conductive member does not align parallel to the first direction, thereby avoiding interference with the relay's magnetic circuit while maintaining electrical connectivity functionality.
2Device complexity
If the conductive member extends in the first direction between the yokes, then the electrical connection is simplified, but the magnetic field direction becomes parallel to the yoke alignment causing relay operation interference
Solution Approach 1:
The patent applies asymmetry by making the conductive member's extending portion oriented in a direction vertical to the first direction (the direction between yokes), rather than being symmetrically aligned with the yoke arrangement. This asymmetric positioning causes the magnetic field to be generated in a direction that does not parallel the yoke alignment, thereby eliminating the harmful magnetic interference while maintaining the electrical connection function.
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 configuration significantly reduces the impact of the magnetic field on the relay's operation, ensuring stable contact states and preventing unintended separation of contacts, thus enhancing the reliability of the power switching mechanism.
Implementation Method 1
The movable unit is rotated by electromagnetic force from the first yoke and the second yoke to switch between a contact state and a non-contact state of the first contact and the second contact
Implementation Method 2
when a large current flows through the conductive member, a magnetic field generated by a current flowing through the conductive member might affect the operation of the relay
Data Source
AI summary
A second yoke is disposed at a distance from a first yoke in a predetermined first direction. The movable unit is disposed between the first yoke and the second yoke. The movable unit is rotated by magnetic force from the first yoke and the second yoke to switch between a contact state and a non-contact state of a first contact and a second contact. The first conductive member has an extending portion extending in a second direction vertical to the first direction. The extending portion and a second conductive member are disposed at positions not overlapping with the relay body as viewed in a third direction vertical to the first direction and the second direction.