Combined Terminal Pole Block for High Voltage Testing
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Solution Overview
Problem
High-cost erection, mounting, and monitoring issues associated with cabling between input and protective fields in high and medium voltage installations, where complex cable connections and separate terminal and pole blocks lead to increased expenses and potential failure sources.
Innovation Solution
A combined terminal and pole block with cable clamping apparatus that absorbs tensile forces, eliminating torque on contact blades and allowing secure cable attachment without disrupting electrical connections, thereby simplifying wiring and reducing failure risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate terminal blocks and pole blocks are used for cable connections and electrical device connections, then connection flexibility is improved, but device complexity and wiring complexity increase
Solution Approach 1:
The patent combines the terminal block and pole block into a single integrated unit. The terminal block housing contains both the cable clamping apparatus and the pole openings, eliminating the need for separate blocks. This integration reduces wiring complexity by reducing the number of connection points and components while maintaining the flexibility to connect both cables and electrical devices.
2Ease of operation
If cable clamping apparatus is integrated into terminal block, then cable management is improved, but manufacturing complexity increases
Solution Approach 1:
The terminal block is divided into functional segments: a cable clamping apparatus for cable attachment and pole openings for electrical device connections. This segmentation allows each function to be optimized independently while being manufactured as an integrated unit, improving cable management without proportionally increasing manufacturing complexity.
3Reliability
If redundant installations with second lines are provided for testing, then testing reliability is improved, but installation costs increase
Solution Approach 1:
The integrated terminal and pole block serves as an intermediary component that enables testing without requiring redundant installation lines. The pole openings allow connection of testing devices directly to the electrical device through the integrated structure, providing a cost-effective alternative to building redundant power lines while maintaining testing reliability.
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
This solution reduces installation and operating costs, enhances cable management, and provides additional space by integrating terminal and pole functions into a single block, minimizing the need for separate components and improving reliability.
Implementation Method 1
cable clamping apparatus that absorbs tensile forces, eliminating torque on contact blades
Implementation Method 2
two resiliently adjacent contact blades, each of said contact blades being more specifically loaded by a spring to allow for intimate contact with the pole blade of the plug
Data Source
AI summary
The subject matter of the invention is an apparatus for testing a protective, measuring or metering device as a constituent part of a high or medium voltage installation, more specifically of a utility protective relay, of a generator protective device, of a current meter and so on in a high or medium voltage installation, a combined terminal and pole block (1) located in the input field of the high or medium voltage installation being connected in the protective field to the protective, measuring or metering device, said terminal and pole block (1) comprising several terminal and pole segments (2) disposed behind each other, each terminal and pole segment (2) comprising on its upper side a pole opening (5) for receiving the pole blade (7) of a plug (8), each terminal and pole segment (2) having a cable clamping apparatus (27; 31) on either side thereof, said cable clamping apparatus (27; 31) being accessible through an opening (22a) for the cable disposed in the side wall of the terminal and pole segment (2).