Modular Interconnection Device for Switchgear
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Solution Overview
Problem
Existing electric current switching devices often require oversized breaking devices when higher current or voltage levels are needed, as standard devices are not sufficient for such applications, leading to inefficiencies and potential connection errors.
Innovation Solution
A modular interconnection device that combines multiple switching devices by connecting first and second electrical contacts in parallel and series, with a delay circuit for control signals, allowing for higher current and voltage handling capabilities while minimizing heat dissipation and arc persistence risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If standard breaking devices are used for higher current or voltage applications, then the current and voltage handling capability is improved, but the device size becomes considerably oversized with respect to the actual use
Solution Approach 1:
The invention divides a single high-power breaking function into multiple smaller breaking devices working in parallel. Each device handles a portion of the total current, allowing the system to achieve high power capability while using compact, appropriately-sized individual components rather than one oversized device.
Solution Approach 2:
Multiple breaking devices are combined through an interconnection device with parallel electrical circuits to achieve the desired current and voltage handling capability. The interconnection device integrates several smaller devices to function as a unified high-power system.
2Power
If multiple switching devices are combined to handle higher currents and voltages, then the current and voltage handling capability is improved, but the connection complexity increases leading to potential connection errors
Solution Approach 1:
The interconnection device integrates multiple breaking devices into a unified assembly with pre-established electrical connections. This merging approach maintains the high power capability while reducing connection complexity by providing a single integrated unit rather than requiring separate connections for each device.
Solution Approach 2:
The interconnection device is pre-assembled with all electrical connections and configurations established before installation. This preliminary action ensures correct connections are made in advance, eliminating the need for complex on-site wiring and reducing the risk of connection errors during installation.
3Ease of manufacture
If switching devices are preassembled in a modular manner, then the ease of installation and reduction of connection errors is improved, but the device complexity increases due to integrated circuits and support structures
Solution Approach 1:
Multiple breaking devices are merged into a single modular assembly with integrated electrical circuits and common support structures. This combining approach simplifies installation by providing a ready-to-install unit while the internal complexity is managed through standardized integration patterns.
Solution Approach 2:
The interconnection device serves multiple functions simultaneously: it provides electrical interconnection between breaking devices, integrates control circuits, provides mechanical support, and enables modular installation. This multi-functionality justifies the structural complexity by consolidating what would otherwise require separate components.
Data Source
Figure 1~2
Figure 3~4
AI summary
This interconnection device (6) comprises: - first and second terminals configured to be connected respectively to a first (C1) and second (C2) switching device; - third and fourth terminals configured to be connected respectively to an actuator of the first and second device; - an input terminal (10), an output terminal (12) and control terminals (14, 16); - a first electrical circuit which connects the input and output terminals to the first and second terminals; - a second electrical circuit which connects the control terminals to the third and fourth terminals to distribute a control signal and comprising an electronic circuit (8) configured to delay the transmission to the fourth terminals of a control signal to open the electrical contacts received from the control terminals.