Safety Test Switch for Medium Voltage Circuits
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Solution Overview
Problem
Current medium to high voltage monitoring circuits face challenges during maintenance, as testing and adjustments can lead to equipment damage and technician safety risks, and require power circuit interruptions, resulting in increased operational costs and inefficiencies.
Innovation Solution
An interface test device with modular design, featuring insulated jacks and disconnect plugs that allow safe opening and closing of the circuit, preventing accidental contact and incorporating a coding system to prevent incorrect plug insertion, ensuring safe and efficient testing without interrupting the power circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If technicians perform testing and adjustments on medium to high voltage monitoring circuits, then the operation and parameters of the circuit can be verified and modified, but equipment damage and technician safety risks occur due to inevitable mistakes
Solution Approach 1:
The patent introduces an interface test device as an intermediary between the technician and the medium to high voltage monitoring circuit. This device includes isolated test terminals and switching mechanisms that allow testing without direct technician contact with high voltage components, thereby eliminating safety risks while maintaining the ability to verify circuit operation
Solution Approach 2:
The test device segments the testing function from the main monitoring circuit through physical isolation and separate testing pathways. This allows independent testing of circuit components without exposing the entire system or technician to danger, enabling reliable verification while preventing harmful effects
2Ease of repair
If technicians perform maintenance on medium to high voltage monitoring circuits, then components can be serviced and maintained, but the power circuit must be powered down causing operational interruptions
Solution Approach 1:
The patent enables continuous operation of the power circuit during maintenance by providing isolated access to monitoring circuit components. The interface test device maintains the monitoring circuit's connection to the power system while allowing technicians to service components without requiring a complete power shutdown, thus maintaining productivity
Solution Approach 2:
The interface test device serves as an intermediary that decouples the maintenance requirement from power circuit shutdown. It provides a safe interface that allows technicians to access and maintain monitoring components while the power circuit remains operational, eliminating the need to interrupt useful action
3Reliability
If traditional testing methods are used on medium to high voltage monitoring circuits, then testing can be performed, but substantial amounts of technician time are required which increases operational costs
Solution Approach 1:
The interface test device incorporates self-testing capabilities and automated diagnostic functions that reduce the need for extensive manual technician intervention. The device can automatically verify circuit parameters and identify issues, allowing testing to be performed with minimal technician time while maintaining high reliability standards
Data Source
AI summary
An interface test device for testing a circuit, the interface test device including a module configured to open and close a medium to high voltage monitoring circuit, the module having at least one pair of contacts biased towards each other that are electrically connected and in line with the medium to high voltage monitoring circuit; at least one pair of insulated jacks, wherein the at least one pair of insulated jacks is connected to the medium to high voltage monitoring circuit before or substantially simultaneously with the medium to high voltage monitoring circuit being opened; at least one disconnect plug that is insertable into the module through at least one parking opening into at least one parking position and insertable into the module through at least one disconnect opening into at least one disconnect position.