Reinforced Insulating Mat Structure for Lighter Voltage-Class Protection
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Solution Overview
Problem
Conventional insulating mats for electrical installations are excessively thick and heavy due to a single thickness design to meet multiple voltage classes, making them difficult to handle, especially for low-tension applications, despite complying with standards like IEC 61111:2009.
Innovation Solution
An insulating mat structure featuring one or more layers of dielectric materials with an intermediate reinforcement layer, such as woven cotton or aramid fibers, to enhance mechanical strength and reduce thickness while maintaining dielectric and mechanical performance, allowing for mats of varying thicknesses and widths to match specific nominal voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulating mats are made of a single thickness to meet multiple voltage classes, then they comply with the IEC 61111:2009 standard for resistance to perforation, but they become excessively thick and heavy, making them difficult to handle
Solution Approach 1:
The insulating mat is divided into multiple layers with different functions: a first elastomeric layer providing dielectric properties, a reinforcement layer providing mechanical strength and perforation resistance, and a second elastomeric layer providing additional dielectric protection. This segmentation allows each layer to be optimized for its specific function, enabling the mat to meet perforation resistance requirements without excessive overall thickness and weight.
Solution Approach 2:
The insulating mat uses a composite structure combining elastomeric materials with a reinforcement layer (such as fabric or mesh). This composite construction provides both the dielectric properties needed for electrical insulation and the mechanical strength required for perforation resistance, eliminating the need for excessive thickness that would result from using a single homogeneous material.
2Reliability
If insulating mats are made of a single thickness to meet multiple voltage classes, then they comply with the IEC 61111:2009 standard, but they are excessively thick, making them difficult to handle
Solution Approach 1:
By segmenting the mat into functional layers (elastomeric layers for dielectric protection and a reinforcement layer for mechanical strength), the design achieves standard compliance with optimized thickness. This allows the mat to be thin enough for easy handling while maintaining all required performance characteristics for different voltage classes.
Solution Approach 2:
The reinforcement layer is strategically positioned within the mat structure to provide localized mechanical strength where needed for perforation resistance, while the elastomeric layers provide dielectric protection. This local optimization of material properties allows the mat to meet all standard requirements without excessive overall thickness, improving ease of handling.
3Strength
If insulating mats use greater thickness to ensure mechanical strength and perforation resistance, then they meet the IEC 61111:2009 standard, but they become heavy and difficult to transport
Solution Approach 1:
The composite structure combining elastomeric materials with a reinforcement layer (fabric or mesh) provides high mechanical strength and perforation resistance without requiring excessive thickness. The reinforcement layer contributes significantly to strength while adding minimal weight, allowing the mat to meet mechanical requirements with reduced overall weight compared to homogeneous thick mats.
Solution Approach 2:
Dividing the mat into functional layers allows the reinforcement layer to be optimized specifically for mechanical strength, while the elastomeric layers are optimized for dielectric properties. This functional segmentation enables each layer to contribute efficiently to its specific property, achieving high strength with minimal weight penalty.
Data Source
AI summary
The invention relates to an electrically insulating mat (1) comprising one or more layers (2) of dielectric materials, and an intermediate layer (3) that reinforces against puncture. Said insulating mats can have different thicknesses for different nominal voltage performances.