Power Cable Cutting With Adapter Alignment and Live-State Detection

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Solution Overview

Problem

Existing cutting devices struggle with achieving precise cuts of strand sections with varying diameters and orientations, often resulting in inexact and inclined cuts, particularly when dealing with smaller cross-sections relative to the device aperture.

Innovation Solution

A cutting device equipped with an adapter that matches the aperture dimensions, allowing for correct orientation of the strand section within the cutting device, and includes a positioning part to guide the item to be cut centrally, ensuring precise cuts. Additionally, the device incorporates a measuring probe and evaluation controller for safe cutting of live electrical cables.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the cutting device aperture is made large to accommodate strand sections of different diameters, then the adaptability is improved, but the manufacturing precision deteriorates due to unfavorable orientation and tilting of small cross-section strand sections

Engineering Contradiction:

Improveadaptability to different strand diametersVSAvoidcutting precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

A positioning part is introduced as an intermediary element between the cutting device aperture and the strand section. This positioning part has a first cross-section that matches the aperture and a second cross-section that matches the strand section, ensuring proper orientation and preventing tilting during the cutting process, thereby maintaining cutting precision while preserving adaptability to different strand diameters

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If manual force is applied to determine the testing probe force, then the ease of operation is improved, but the measurement precision deteriorates due to inability to accurately determine the active state of the cable

Engineering Contradiction:

Improveease of operationVSAvoiddetermination of active state

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The manual mechanical force application method is replaced with an electrical measurement system. A testing probe with electrical contact elements is used to electrically determine the active state of the cable, providing accurate measurement while maintaining ease of operation through simple probe insertion and automatic detection

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP3243250B1Method for the severance of an electrical power cable, or of a strand section, device therefor, as well as cutting device

Publication Date: 2025.07.02 GUSTAV KLAUKE GMBH

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AI summary

A device is used to sever an electrical power cable for the transmission of high voltage. The cable has an insulation sheath, a screening layer and a conductive layer. The device includes a first frame having a first cutting blade mounted thereon, a second frame, and a measuring device mounted on the second frame. The first cutting blade is moveable relative to the measuring device. The measuring device is capable of measuring an electrical load on the electrical power cable and capable of terminating the severing of the electrical power cable. A method of using the device is also provided.