Insulation-Piercing Switch Arrangement for Live Conductor Isolation
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Solution Overview
Problem
Existing electrical switches require de-energizing current-carrying conductors for installation, involving stripping of insulation and protective sheaths, which is inconvenient and risky.
Innovation Solution
A switch arrangement that allows installation under voltage, using an insulating separating element to mechanically and electrically separate conductor sections, with penetration contact elements and a contact bridge for connection/disconnection, facilitated by an actuating element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrical switches are installed by stripping insulation and protective sheaths, then reliable electrical connection is achieved, but installation complexity and safety risks increase
Solution Approach 1:
The penetration contact elements are nested within the insulating separating element, allowing the contact elements to be housed inside the separating element. This integration eliminates the need for separate stripping and connection operations, enabling installation on live conductors without exposing operators to electrical hazards while maintaining reliable electrical connection.
Solution Approach 2:
The insulating separating element serves multiple functions simultaneously: it provides electrical insulation, mechanically separates conductor sections, and houses the penetration contact elements for establishing electrical connection. This multi-functionality consolidates multiple installation steps into a single operation, reducing complexity and improving safety.
2Object-affected harmful factors
If de-energizing conductors is required for installation, then safety is improved, but installation time and productivity decrease
Solution Approach 1:
The insulating separating element acts as an intermediary that provides electrical insulation while enabling the penetration contact elements to establish connections. This intermediary structure allows installation operations to be performed on live conductors by maintaining electrical isolation between the operator and the conductor, thereby improving safety without sacrificing productivity.
Solution Approach 2:
The penetration contact elements are pre-positioned within the insulating separating element during manufacturing. This preliminary arrangement ensures that when the separating element is applied to the conductor, the contact elements are already in the correct position to establish electrical connection, eliminating the need for time-consuming field adjustments and improving installation productivity.
3Reliability
If insulation and protective sheaths are stripped, then electrical contact is established, but installation time and material waste increase
Solution Approach 1:
The penetration contact elements extract or penetrate through the insulation and protective sheath layers to establish electrical contact with the conductor core. This extraction mechanism allows the contact elements to reach the conductive material without requiring the insulation to be completely removed, thereby reducing installation time and minimizing material waste while ensuring reliable electrical contact.
Data Source
AI summary
A switch arrangement is provided for connecting or disconnecting at least one current-carrying conductor. The switch arrangement comprises an electrical separating element which electrically and mechanically separates a first conductor section and a second conductor section from one another at a separation point. The switch arrangement further comprises a first penetrating contact element to contact the first conductor section without stripping, a second penetrating contact element to contact the second conductor section without stripping, and a contact bridge to electrically connect the first and second penetrating contact elements to one another across the separation point. The switch arrangement also comprises an actuating element for the switch arrangement, wherein an electrical contact of the contact bridge with the first and second penetration contact elements is established or disconnected via the actuating element and thus a connection between the first conductor section and the second conductor section is established or disconnected.