ERMS Key Activation for Protected Trip Unit Maintenance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrical distribution systems require permanent hardware installation to achieve a 'lower energy service mode' for safe maintenance, which is costly and impractical for retrofitting existing systems.
Innovation Solution
The Energy Reduction Maintenance Setting (ERMS) key is used to temporarily place a trip unit into a protected, lower arcing energy mode, allowing for safe maintenance without the need for permanent modifications or costly retrofits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If permanent hardware installation is used to achieve lower energy service mode, then safety of maintenance personnel is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces an intermediary device (external relay or trip unit modification) that mediates between the existing circuit breaker and the maintenance personnel. This intermediary provides the energy reduction functionality without requiring permanent modification to the original equipment, thus improving safety while avoiding complex permanent hardware installation.
Solution Approach 2:
The patent changes the operational parameters of the circuit breaker by introducing external relays or modifying trip units to enable energy reduction mode. Instead of permanently altering the hardware structure, the system changes operational parameters (energy levels) through controllable devices, achieving safety improvements without permanent complex installations.
2Reliability
If permanent hardware installation is used to achieve lower energy service mode, then safety of maintenance personnel is improved, but cost increases
Solution Approach 1:
The patent uses intermediary devices (external relays, trip units) that can be added to existing systems without permanent installation. These mediators provide the necessary safety functionality at lower cost compared to permanent hardware modifications, reducing both purchase and maintenance costs while improving personnel safety.
Solution Approach 2:
The patent employs relatively simple, replaceable devices such as external relays and trip units that can be easily installed and removed. These components are less expensive than permanent hardware installations and can be replaced or upgraded without significant investment, reducing overall system cost while maintaining safety improvements.
3Use of energy by moving object
If permanent hardware installation is used to achieve lower energy service mode, then energy reduction capability is improved, but adaptability decreases
Solution Approach 1:
The patent introduces universal devices (external relays, trip units) that can be applied to multiple different circuit breaker models and configurations. These multi-functional devices provide energy reduction capability across various existing systems without requiring system-specific permanent modifications, thereby improving adaptability while maintaining energy reduction effectiveness.
Solution Approach 2:
The patent employs dynamic, controllable devices that can be easily installed, configured, and removed from existing systems. Unlike static permanent hardware installations, these dynamic components can be adapted to different systems as needed, providing energy reduction capability while maintaining high versatility and ease of retrofitting.
Data Source
AI summary
Embodiments provide an Energy Reduction Maintenance Setting (ERMS) key that includes a data connector configured to communicatively couple to a data port of a target device. The ERMS key further includes an illumination device and an actuator mechanism having a base positional state and an actuated positional state. The ERMS key includes logic configured to, upon detecting the actuator mechanism has moved from the base positional state to the actuated positional state, generate and transmit a first data message to the target device through the data connector instructing the target device to enter a protected mode. The logic is further configured to, upon receiving a second data message from the target device over the data connector acknowledging that the target device has successfully entered the protected mode, cause the illumination device to illuminate.