Flexible Conductor Assembly to Prevent Bus Bar Hot Spots

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Solution Overview

Problem

Rigid bus bars in power distribution systems restrict flexibility in breaker panel configurations, lead to increased maintenance costs due to thermal hot spots and loose connections, and require complete replacement for changes in breaker layouts, complicating inventory and manufacturing logistics.

Innovation Solution

A flexible electrical conductor assembly with a main conductive portion and bendable branch members, insulated by casings, allowing for customizable configurations and multiple connections to different switching apparatuses without the need for unique bus bar assemblies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If rigid bus bars are used in power distribution systems, then structural strength and electrical conductivity are improved, but flexibility in breaker panel configurations is restricted and thermal hot spots occur due to loose connections

Engineering Contradiction:
Improvestructural strengthVSAvoidflexibility in breaker panel configurations
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The rigid bus bar is divided into multiple modular sections that can be independently positioned and connected. Each section can be separately adjusted to accommodate different breaker configurations, while maintaining overall structural integrity through standardized connection interfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bus bar system incorporates adjustable and reconfigurable elements that allow dynamic adaptation to different breaker panel layouts. The modular sections can be repositioned along the panel to match varying breaker spacings and configurations, transforming a static structure into a adaptable system.

Inventive Principle:
Principle #15Dynamics

2Reliability

If rigid bus bars with multiple connection points are used, then electrical conductivity is improved, but manufacturing cost and assembly time increase

Engineering Contradiction:
Improveelectrical conductivityVSAvoidmanufacturing cost and assembly time
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The modular bus bar sections are designed with universal connection interfaces that can accommodate multiple breaker types and configurations using the same standardized components. This multi-functionality reduces the need for custom-designed bus bars for different applications, simplifying manufacturing and inventory management.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The bus bar system allows adjustment of connection parameters such as spacing, positioning, and configuration through modular assembly rather than requiring custom manufacturing for each parameter set. This enables a single standardized design to serve multiple applications with varying electrical and spatial requirements.

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If rigid bus bars are used, then structural stability is improved, but complete replacement is required for changes in breaker layouts increasing maintenance cost

Engineering Contradiction:
Improvestructural stabilityVSAvoidmaintenance cost and complexity
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The bus bar is segmented into modular sections that can be independently removed, added, or repositioned. This allows partial reconfiguration for maintenance or layout changes without requiring complete replacement of the entire bus bar assembly, reducing maintenance costs and complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular design enables individual bus bar sections to be removed, recovered, and reused in new configurations. Rather than discarding the entire bus bar system when reconfiguration is needed, specific sections can be extracted and reused, reducing material waste and maintenance expenses.

Inventive Principle:
Principle #34Discarding and recovering

4Reliability

If joints between attached conductors are used, then electrical connection is achieved, but electrical resistance increases creating thermal hot spots

Engineering Contradiction:
Improveelectrical connectionVSAvoidthermal hot spots
Core Design Contradiction:
ReliabilityVSTemperature

Solution Approach 1:

The modular bus bar sections are designed to be electrically and mechanically integrated into a unified continuous conductor. The connection interfaces are engineered to minimize contact resistance through optimized contact surfaces and compression mechanisms, effectively merging multiple sections into a single low-resistance electrical path.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS11870187B2Conductor assembly for a power distribution system
Publication Date: 2024.01.09 EATON INTELLIGENT POWER LTD
  • US11870187B2 patent drawing
  • US11870187B2 patent drawing
  • US11870187B2 patent drawing

AI summary

An electrical conductor assembly for use in a power distribution assembly includes an electrical conductor. A casing covers at least a portion of the electrical conductor. The casing insulates the at least a portion of the electrical conductor.