Remote Electrical Disconnect Actuator for Arc Flash Safety
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Solution Overview
Problem
Existing electrical disconnect apparatuses require direct physical contact and manual operation, posing safety risks during maintenance, testing, or repair, especially in hazardous conditions like arc flash, and do not allow for remote operation.
Innovation Solution
An electrical disconnect apparatus with a housing, conductors, and an actuator assembly that can be manually or automatically operated, including a built-in automatic actuating assembly allowing remote control, which moves a movable conductor between connected and disconnected positions without the need for separate devices, reducing size and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual operation of electrical disconnect apparatus is used, then the device structure remains simple, but technician safety is compromised due to direct physical contact requirements
Solution Approach 1:
The patent introduces an intermediary system consisting of a motorized actuator, control circuit, and communication interface that mediates between the technician and the electrical disconnect apparatus. This intermediary enables remote operation through wireless communication, eliminating the need for direct physical contact while maintaining system reliability and technician safety.
2Object-affected harmful factors
If remote automatic operation is implemented, then technician safety is improved by eliminating direct contact, but the device complexity increases due to additional actuator components
Solution Approach 1:
The control circuit serves multiple functions: it controls the motorized actuator for remote operation, monitors the electrical connection status through sensors, and communicates system state wirelessly. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while enabling remote operation to eliminate arc flash exposure.
Solution Approach 2:
The patent merges the actuator control, status monitoring, and wireless communication functions into an integrated control system. The control circuit combines motor control, sensor signal processing, and communication protocols in a single unified assembly, reducing the overall device complexity compared to having separate independent systems for each function.
3Extent of automation
If separate remote control devices are used, then remote operation capability is achieved, but the overall system size and complexity increase
Solution Approach 1:
The patent integrates the remote control functionality directly into the electrical disconnect apparatus by combining the motorized actuator, control circuit, and wireless communication interface as built-in components. This merging eliminates the need for separate external remote control devices and reduces system integration complexity.
Solution Approach 2:
The electrical disconnect apparatus performs its own remote operation through integrated self-service capabilities. The built-in wireless communication interface receives remote commands, and the integrated control circuit executes them directly through the motorized actuator, eliminating the need for external control systems and reducing overall system complexity.
Data Source
AI summary
An electrical disconnect apparatus includes a housing having an interior and an exterior, first and second conductors extending from the exterior into the interior, a movable conductor, and an actuator assembly coupled to the housing. The movable conductor has a connected position in which the movable conductor electrically connects the first conductor and the second conductor, and a disconnected position in which the first conductor is electrically disconnected from the second conductor. The actuator assembly is adapted to move the movable conductor between the connected position and the disconnected position, and can be actuated manually or automatically.