Busbar Chamber Arc-Striking Assembly for Early Arc Cutoff
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electrical cabinet designs lack effective arcing resistance and environmental safety due to large busbar chamber spaces and the use of laminated polyester plates, which are prone to ablation and produce toxic gases.
Innovation Solution
A busbar chamber arc-striking assembly with a main frame, including a back plate and first arc-striking plates positioned close to busbar chamber sleeves, along with internal and external partition plates, which allow for efficient arc striking and energy reduction without the need for laminated polyester plates, forming an independent compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laminated polyester plates are installed at the back side of the low-voltage box and corresponding side screen to prevent burn-through, then burn-through protection is provided, but the polyester plates are easy to ablate and produce toxic gases, leading to environmental problems
Solution Approach 1:
The patent removes the harmful laminated polyester plates from the system and replaces them with an arc-striking plate assembly that provides the same protective function without producing toxic gases. The arc-striking plates are positioned to intercept arcs before they reach the busbar chamber back plate, extracting the harmful material while maintaining the protective function.
Solution Approach 2:
The invention changes the material parameters by using metal arc-striking plates instead of organic polyester plates. This material substitution fundamentally alters the combustion characteristics, eliminating toxic gas production while maintaining arc interception capability. The metal plates can withstand high temperatures and arcs without decomposing into harmful substances.
2Volume of moving object
If the busbar chamber is not separated into a separate compartment and its space is large, then installation space is available, but the performance of the arc-striking plate regarding arc-striking and burn-through resistance is poor
Solution Approach 1:
The patent segments the large busbar chamber space by introducing multiple arc-striking plates positioned at strategic locations. These plates divide the chamber into smaller effective zones, ensuring that arcs are intercepted closer to their origin. The segmentation improves arc-striking performance by reducing the distance arcs must travel while maintaining adequate space for busbar installation.
Solution Approach 2:
The arc-striking plates are positioned in advance at optimal locations within the busbar chamber to intercept arcs before they can cause burn-through or travel large distances. This preliminary positioning of protective elements ensures that arcs are struck and contained early in their development, improving reliability without requiring a complete redesign of the chamber space.
3Ease of manufacture
If an arc-striking plate is used with simple structure, then manufacturing is easier, but in a case where the space of the busbar chamber is still relatively large, laminated polyester plates are still used at the corresponding side screen to prevent burn-through, resulting in poor arc-striking performance
Solution Approach 1:
The patent merges the functions of arc-striking and burn-through protection into a single integrated arc-striking plate assembly. By combining these functions into metal plates with appropriate positioning and spacing, the design eliminates the need for separate polyester protective layers while achieving both arc interception and burn-through resistance in a manufacturable structure.
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 assembly effectively cuts off arcs at their initial stage, reducing energy release and eliminating the need for toxic materials, thereby enhancing both arcing resistance and environmental safety.
Implementation Method 1
the first arc-striking plate is close to the busbar chamber sleeves, it is possible to strike arc quickly at the initial stage of arc generation, and to cut off the arc and reduce arc energy
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention discloses a busbar chamber arc-striking assembly, which includes a main frame forming a space configured to accommodate a busbar chamber sleeve, wherein the main frame includes a back plate, and the back plate is arranged on a side of the busbar chamber sleeve opposite to the busbar; and a first arc-striking plate which is parallel to and spaced apart from the back plate of the main frame, wherein the first arc-striking plate is installed to extend between adjacent busbar chamber sleeves. The busbar chamber arc-striking assembly according to the present invention can quickly strike the arc at the initial stage of arc generation, cut off the arc, reduce the arc energy, and ignite the arc itself until the arc is extinguished.