Modular Surge Protection Assembly for Junction Box Retrofit
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Solution Overview
Problem
Conventional surge protection devices (SPDs) are bulky and require complex installation, often necessitating conduit cutting, and their components are not easily replaceable, leading to inefficiencies in retrofitting and maintenance.
Innovation Solution
A surge protection assembly with a modular design featuring a surge protection module that can be easily attached to a junction box without conduit cutting, utilizing a movable varistor unit that is field-replaceable and compact, allowing for easy installation and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surge protection devices are used, then surge protection function is provided, but the device size becomes large and installation complexity increases
Solution Approach 1:
The surge protection module is nested within the junction box structure, with the module fitting into a designated cavity or recess in the junction box. This allows the surge protection function to be integrated into the existing junction box volume rather than requiring separate external housing space.
Solution Approach 2:
The junction box is designed to serve multiple functions: it provides electrical connection points, houses the surge protection module, and maintains structural support for conduits. The surge protection module itself integrates the varistor, terminals, and mounting structure into a single multi-functional unit.
2Reliability
If conventional surge protection devices are installed, then surge protection is achieved, but installation complexity increases requiring conduit cutting
Solution Approach 1:
The surge protection module is pre-assembled with all necessary electrical connections and mounting structures before installation. The module includes pre-configured terminals that connect to circuit conductors and pre-integrated mounting features that attach to the junction box, eliminating the need for on-site assembly or conduit modification.
Solution Approach 2:
The surge protection system is divided into a separate, self-contained module that can be independently installed into the junction box. This modular design allows the surge protection function to be added without modifying the existing junction box or conduit system, as the module is a plug-and-play component.
3Reliability
If conventional surge protection devices are used, then surge protection is provided, but component replaceability decreases
Solution Approach 1:
The surge protection system is segmented into a replaceable module containing the varistor and associated components, which can be independently removed and replaced. The module is designed as a discrete unit with standardized connection interfaces, allowing field replacement without affecting other junction box components or requiring specialized tools.
Solution Approach 2:
The surge protection module incorporates movable or flexible connection elements that facilitate easy insertion and removal. The module design includes features such as snap-fit mounting, spring-loaded terminals, or bayonet connectors that enable dynamic assembly and disassembly operations, enhancing maintainability.
4Volume of moving object
If compact surge protection assembly is designed, then installation space is reduced, but manufacturing complexity may increase
Solution Approach 1:
Multiple components including the varistor, terminals, mounting brackets, and protective housing are merged into a single integrated surge protection module. This consolidation reduces the overall assembly volume by eliminating gaps and interface requirements between separate components, while the modular nature of the integration keeps manufacturing processes manageable.
Solution Approach 2:
Components are nested within each other to maximize space utilization. The varistor is positioned within a recess in the module housing, terminals are integrated into the housing structure, and mounting features are incorporated into the same structural elements, creating a compact nested arrangement that minimizes volume without requiring complex manufacturing.
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 solution provides a compact, easily installable, and maintainable surge protection system that fits within standard junction boxes, reducing installation complexity and enabling quick component replacement, thus enhancing protection against power surges.
Implementation Method 1
reducing resistance upon high voltage levels occurring (e.g., using a varistor), such that excess power is diverted away from the electronic component(s) and/or other circuitry being protected by the SPD
Data Source
AI summary
Surge protection assemblies, each comprising an assembly housing, an assembly circuit board, a module, and conductive elements (each with a region electrically connected to a contact region of the assembly circuit board, and a region outside the assembly housing); The module comprises plural varistors inside a module housing, a module circuit board, and module terminals each with a region inside the module housing and electrically connected to circuitry on the module circuit board, and a region outside the module housing. The surge protection module is movable as a unit between an engaged arrangement (each of the terminal second regions is electrically connected to a respective terminal connection region of the surge protection assembly circuit board) and a disengaged arrangement. Also, surge protection modules, electronic assemblies each with a surge protection assembly, and methods of installing a surge protection assembly to a plurality of circuitry conductive elements.