In-line Cable Termination with Fused Switch Mechanism

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Solution Overview

Problem

Existing cable termination systems for electrical power lines lack efficient and reliable methods for selectively isolating and connecting high voltage transmission cables, particularly in environments where permanent or temporary isolation is required.

Innovation Solution

An in-line cable termination system featuring an isolating apparatus with electrically conductive end members, insulators, and a fused switch mechanism, which includes a fuse module for selective electrical connection and disconnection of cables, allowing for mechanical and electrical engagement of cables and providing fault protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fused switch mechanism is added to provide selective isolation capability, then the reliability and operational flexibility improve, but the device complexity increases

Engineering Contradiction:
Improveselective isolation capabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the isolating apparatus with a fused switch mechanism into a single integrated unit. The fuse module is housed within the same structure as the end members and insulators, merging the isolation function with the switching function. This integration provides selective isolation capability while minimizing the increase in overall device complexity by sharing structural components.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If insulators are used to electrically isolate end members, then the electrical insulation performance improves, but the device complexity and manufacturing difficulty increase

Engineering Contradiction:
Improveelectrical insulation performanceVSAvoidassembly complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The isolating apparatus is segmented into distinct functional components: end members for electrical connection, insulators for electrical isolation, and a fused switch mechanism for controlled disconnection. Each component is designed and manufactured separately with optimized properties, then assembled into the complete isolating apparatus. This segmentation allows for specialized manufacturing of each component while maintaining overall system reliability.

Inventive Principle:
Principle #1Segmentation

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 secure and reliable termination of electrical power transmission cables, providing fault protection and easy integration into existing circuits, with the ability to automatically disconnect under overcurrent conditions, enhancing safety and operational efficiency in power distribution networks.

Implementation Method 1

The fused switch mechanism includes a fuse module and is configured to selectively alternatively electrically connect the first and second end members, and thereby the first and second cables, through the fuse module and disconnect the first and second end members

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS9876348B2In-line cable termination systems for electrical power transmission cables and methods using the same
Publication Date: 2018.01.23 TYCO ELECTRONICS CANADA ULC
  • US9876348B2 patent drawing
  • US9876348B2 patent drawing
  • US9876348B2 patent drawing

AI summary

An in-line cable termination system for use with first and second electrical power transmission cables includes an isolating apparatus having an isolating apparatus axis and including an electrically conductive first end member and an electrically conductive second end member, first and second insulators, and a fused switch mechanism. The first end member and the second end member are spaced apart along the isolating apparatus axis. Each of the first and second end members includes a respective coupling portion to mechanically and electrically engage the first and second cables, respectively. The first and second insulators each extend between and couple the first end member and the second end member. The fused switch mechanism includes a fuse module and is configured to selectively alternatively electrically connect the first and second end members, and thereby the first and second cables, through the fuse module and disconnect the first and second end members.