High-voltage switchgear, high-voltage switchgear system, and method for operating a high-voltage switchgear

EP4762580A1Pending Publication Date: 2026-06-24SIEMENS ENERGY GLOBAL GMBH & CO KG
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
SIEMENS ENERGY GLOBAL GMBH & CO KG
Filing Date
2023-09-25
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Existing high-voltage performance switches face challenges in achieving improved switch-on behavior and lifespan, particularly due to rapid switch-on speeds that can lead to arcing and mechanical stress on switching contacts.

Method used

The proposed high-voltage performance switch incorporates a vacuum shell tube with a movable switching contact, a switch-on spring, a contact impression spring, and a spring memory. The spring memory is used to store tension energy before the switch-on condition, which is then transferred to the contact impression spring to support the maintenance of the switch-on condition, thereby reducing mechanical stress and preventing damage.

Benefits of technology

This solution enables a quick switch-on process with a reduced switch-on speed, minimizing mechanical stress on the switching contacts and preventing damage. The energy stored in the spring memory can be reused for energy recovery, supporting the maintenance of the switch-on condition and extending the lifespan of the switch.

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Abstract

The invention relates to a high-voltage switchgear (1) comprising - a vacuum interrupter (7) which is electrically connected to two high-voltage terminals and which is designed to produce an electric connection on the basis of a mechanical switch actuation (8). For this purpose, the vacuum interrupter (7) has a switch contact (10) movably arranged in an interrupter housing (9). The invention is characterized by - an activation spring (15) which is designed to transmit the mechanical switch actuation (8) to the switch contact (10), - a contact-pressure spring (13) which is designed to maintain the activated state of the switch contact (10), said activated state being assumed by the switch contact (10) after the switch actuation (8) is transmitted to the switch contact (10), and - a spring accumulator (26) which is designed to be at least partly tensioned immediately before the switch contact (10) assumes the activated state, wherein - the spring accumulator (26) is designed to at least partly transmit the stored tension energy to the contact-pressure spring (13) when the switch contact (10) assumes the activated state. The invention additionally relates to a high-voltage switchgear system (2) and to a method.
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