Modular Shutter Device for Switchgear Panel Retrofitting
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Solution Overview
Problem
Existing shutter devices for switchgear panels are complex and cumbersome, requiring ad-hoc solutions for compatibility issues during retrofitting or maintenance, often necessitating replacement of the entire panel or customized components due to differences in circuit breaker dimensions and functionalities.
Innovation Solution
A modular shutter device with an independent actuating mechanism that moves the shutter between protective and open positions without requiring the circuit breaker to move, featuring adjustable components and an earthing device for secure grounding, allowing for standardized production and easy adaptation to various switchgear panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional shutter devices are used with ad-hoc mechanisms actuated by circuit breaker movement, then the shutter can provide protective positioning, but the device complexity and customization requirements increase significantly
Solution Approach 1:
The shutter device is divided into independent functional modules: a movable shutter element, a base with adjustable positioning, and a separate actuating mechanism. This segmentation allows each component to be optimized independently and facilitates retrofitting without replacing the entire assembly.
Solution Approach 2:
The base is designed with universal adaptability to accommodate different circuit breaker types and dimensions through adjustable positioning mechanisms. The shutter device can be retrofitted onto existing switchgear panels regardless of the specific circuit breaker model, eliminating the need for custom-designed mechanisms for each application.
2Reliability
If the shutter mechanism is customized for specific circuit breaker dimensions and functionalities, then the shutter can operate correctly, but the ease of manufacture and retrofitting capability deteriorate
Solution Approach 1:
The base incorporates adjustable parameters including position, orientation, and dimensional configuration to adapt to different circuit breaker specifications. This adjustability allows a single standardized shutter device design to accommodate multiple circuit breaker types without requiring custom manufacturing for each variant.
3Reliability
If the entire switchgear panel is replaced to ensure compatibility, then the shutter device and circuit breaker are guaranteed to work together, but the loss of time and cost increase significantly
Solution Approach 1:
The shutter device is designed with pre-configured adjustable mechanisms that can be quickly adapted to existing circuit breakers during retrofitting. The base includes pre-installed adjustment components and positioning features that enable rapid installation without requiring extensive customization or panel replacement, significantly reducing retrofitting time and costs.
4Ease of operation
If ad-hoc shutter mechanisms are designed for specific applications, then the shutter can be actuated by circuit breaker movement, but the adaptability to different circuit breaker types decreases
Solution Approach 1:
The shutter device incorporates dynamic adjustment capabilities through movable and reconfigurable components on the base. These dynamic elements allow the device to adapt its configuration to match different circuit breaker dimensions and movement characteristics, maintaining ease of operation across various circuit breaker types while maximizing versatility.
Data Source
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AI summary
Shutter device for an electric switchgear panel, comprising: - a base suitable to be placed on a bearing surface inside the switchgear panel, the base being adapted to support, positioned thereon, a current switching device movable between a connected position wherein the switching device is electrically connected to an associated electrical circuit and a disconnected position wherein the switching device is electrically separated from the corresponding electrical circuit; - a frame having at least a portion which rises up transversally from the base and delimits a through aperture; - a movable shutter operatively associated with the base and the frame; and - an actuating mechanism adapted to move the shutter between a first position where the shutter closes at least partially the through aperture preventing the electrical connection of the current switching device with the electrical circuit and a second position wherein the shutter is retracted and leaves the through aperture at least partially opened for allowing the electrical connection of said current switching device with said electrical circuit.