Pyrotechnic Circuit Protection Module for Arc Flash Reduction
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Solution Overview
Problem
Conventional Arc Flash Reduction Maintenance Systems are limited in their ability to effectively reduce electrical arcing and arc flash severity due to the high cost and complexity of custom-designed pyrotechnic circuit protection devices, which require current sensors and external controllers for activation.
Innovation Solution
A modular pyrotechnic circuit protection system that uses a self-generated control signal from fault current to activate pyrotechnic disconnect elements, eliminating the need for current monitoring and external controllers, and allowing for easy configuration with standard components to meet various circuit protection specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional Arc Flash Reduction Maintenance Systems use custom-designed pyrotechnic circuit protection devices with current sensors and external controllers, then arc flash severity is reduced, but device complexity and cost increase
Solution Approach 1:
The patent applies the self-service principle by enabling the pyrotechnic circuit protection device to generate its own control signal internally through a resistor network that detects overcurrent conditions. The device activates the pyrotechnic charge automatically without requiring external controllers or current sensors, thereby reducing system complexity while maintaining arc flash protection capability.
2Reliability
If conventional systems use current sensors and external controllers for pyrotechnic activation, then circuit protection is enhanced, but manufacturing cost increases
Solution Approach 1:
The patent merges the functions of current sensing, control signal generation, and pyrotechnic activation into a single integrated device. The resistor network within the device directly generates the control signal from line voltage, eliminating the need for separate current sensors and external controllers, thereby reducing manufacturing cost while maintaining circuit protection functionality.
Solution Approach 2:
The pyrotechnic circuit protection device is designed to perform multiple functions: it provides overcurrent protection, generates its own control signal, and activates the pyrotechnic charge all within a single device. This multi-functionality eliminates the need for multiple separate components, reducing both manufacturing cost and system complexity.
3Manufacturing precision
If custom-designed pyrotechnic devices are used, then specific circuit protection specifications are met, but adaptability to different applications decreases
Solution Approach 1:
The patent enables adaptability to different applications by allowing parameter changes in the resistor network configuration. By adjusting resistance values and network topology, the device can be tuned to meet various circuit protection specifications while maintaining the same basic device architecture, thus providing versatility across different applications without requiring custom design for each case.
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
This solution provides a cost-effective and highly reliable Arc Flash Reduction Maintenance System that can be easily configured for different applications, reducing arcing potential and arc flash severity without the need for complex control schemes or customization.
Implementation Method 1
The pyrotechnic disconnect element may include stored chemical, electrical or mechanical energy that is released via actuation of a pyrotechnic charge to sever an electrical connection between the terminals of the device
Data Source
AI summary
An embodiment of an arc flash reduction maintenance system includes a pyrotechnic disconnect module and an overcurrent protection device connected to the pyrotechnic disconnect module. A control line is connected to the at least one pyrotechnic disconnect module and in parallel with one of the pyrotechnic disconnect module and the overcurrent protection device. The control line provides a self-generating control signal to cause the pyrotechnic disconnect module to electrically isolate the overcurrent protection device. A switch is located in the control line to selectively enable or disable at least one arc flash reduction maintenance system mode in the control line.