Sacrificial Cap for Electrical Connector De-energization
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Solution Overview
Problem
Current methods for de-energizing high and medium voltage electrical cables require costly and time-consuming cable replacement or length adjustments after 'spiking' the cable, which is inefficient and costly.
Innovation Solution
The development of an electrical cable splicing connector with a sacrificial appendage or adapter that can be cut to ensure de-energization, allowing safe work on the cables without damaging the existing cable, and can be easily replaced when re-energization is needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grounded spike is driven through the cable to confirm de-energization, then personnel safety is improved, but cable replacement or length adjustment is required which increases cost and time
Solution Approach 1:
The invention divides the cable assembly into two separate components: the main cable and a detachable sacrificial spike. The sacrificial spike can be removed and replaced independently without affecting the main cable, allowing safety verification while avoiding cable replacement.
Solution Approach 2:
The sacrificial spike is designed as a disposable, low-cost component that can be driven through the cable to verify de-energization and then removed. If needed, a new spike can be installed without replacing the expensive main cable, thus reducing time and cost losses.
2Reliability
If a grounded spike is driven through the cable to confirm de-energization, then personnel safety is improved, but cable replacement is required which increases cost
Solution Approach 1:
The invention divides the cable assembly into two separate components: the main cable and a detachable sacrificial spike. The sacrificial spike can be removed and replaced independently without affecting the main cable, allowing safety verification while avoiding cable replacement.
Solution Approach 2:
The sacrificial spike is designed as a disposable, low-cost component that can be driven through the cable to verify de-energization and then removed. If needed, a new spike can be installed without replacing the expensive main cable, thus reducing material losses.
3Reliability
If a hydraulic cable cutter is used to physically cut the cable, then de-energization is confirmed, but the cable is damaged requiring replacement
Solution Approach 1:
The sacrificial spike is designed as a disposable component that can be driven through the cable to confirm de-energization. Unlike cutting the cable, this method confirms safety without damaging the cable's structural integrity or electrical continuity.
Solution Approach 2:
The sacrificial spike acts as an intermediary tool that provides de-energization confirmation without directly damaging the cable. It can be removed after use, leaving the cable intact, unlike permanent cutting methods.
Data Source
AI summary
A device includes a sacrificial cap configured for mounting on a direct access port of an electrical connector. The sacrificial cap includes an insulated body and a sacrificial probe conductor projecting from the insulated body. The sacrificial probe conductor is configured to conductively couple with a conductor in the electrical connector via the direct access port when the sacrificial cap is installed on the direct access port. The sacrificial cap includes a portion configured to be physically severed to confirm that the electrical connector is de-energized.