Automatic GFCI Reset Using a Linear Actuator and Delay Relay
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Solution Overview
Problem
The existing GFCI outlet reset process requires manual intervention, necessitating repeated trips to reset the GFCI circuit after each outlet test, which is inefficient and costly, often requiring additional manpower to restore power to multiple outlets along an electrical circuit path.
Innovation Solution
An automatic GFCI reset system comprising a U-shaped bracket with a linear actuator and delay/relay circuitry that automatically depresses and retracts a reset button on a GFCI outlet using an 18V DC battery, allowing continuous automatic resetting of the GFCI circuit after tripping, eliminating the need for manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual resetting of GFCI is performed after each outlet test, then the GFCI circuit can be restored to functioning state, but the testing process requires repeated trips and additional manpower, reducing productivity and increasing time consumption
Solution Approach 1:
The system enables the GFCI outlet to automatically reset itself after tripping during outlet testing. The controlling GFCI outlet detects when it has tripped and autonomously restores power without requiring manual intervention, allowing testing personnel to continuously test outlets without returning to reset the GFCI
Solution Approach 2:
The system incorporates a detection mechanism that monitors the tripped state of the GFCI outlet and triggers an automatic reset response. The outlet tester provides feedback about the testing status, and this feedback loop enables the system to know when resetting is needed and execute the reset automatically
2Ease of operation
If manual resetting of GFCI is performed, then power restoration is achieved, but additional manpower is required to return to the controlling outlet, increasing operational complexity
Solution Approach 1:
The GFCI outlet performs the reset function itself automatically, eliminating the need for operators to physically return to the controlling outlet to press the reset button. This self-service capability simplifies the testing process by removing a manual step that requires operator movement and intervention
3Productivity
If two people are stationed for outlet testing with one person dedicated to resetting GFCI, then continuous testing can be performed, but the manpower requirement and cost double
Solution Approach 1:
By enabling the GFCI outlet to automatically reset itself, the system eliminates the need for a dedicated personnel to monitor and reset the GFCI during testing. This allows a single operator to perform continuous outlet testing without interruption, reducing manpower requirements from two people to one while maintaining continuous testing capability
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
Enables efficient and cost-effective automatic resetting of GFCI outlets along an electrical circuit path, reducing manpower requirements and streamlining the testing process by allowing continuous operation without manual intervention.
Implementation Method 1
a linear actuator attached to an inner surface of the bracket such that a retractable tip thereof faces a reset button on a GFCI outlet
Implementation Method 2
an external electrical housing electrically connected to the first conductor connector to receive electrical power therefrom and including an 18 volt DC battery and delay/relay circuitry
Data Source
AI summary
An automatic ground fault circuit interrupt (GFCI) circuit reset system and apparatus which attaches to a faceplate of an electrical outlet and includes a linear actuator. The linear actuator faces directly at a reset button on a GFCI outlet circuit and automatically actuates to depress the reset button after a predetermined amount of time after the GFCI outlet circuit becomes tripped and no longer transmits electrical power therefrom.