Patent · US Expired

High-voltage circuit breaker having an insulating nozzle

US6744000B1 · kind B1 · utility

7Cited by

5References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Ralf Bergmann · Dresden, DE
Volker Lehmann · Hersbruck, DE
Hold Dienemann · Berlin, DE
Heiner Marin · Berlin, DE

Key dates

Filing date	Dec 20, 2000
Grant date	Jun 1, 2004
Priority date	—
Expiry date	Dec 20, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH01H33/7023
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a high-voltage circuit breaker having two arcing contacts arranged coaxially relative to one another and having an insulating nozzle which in the closed state is blocked by a first arcing contact the first arcing contact has a shaft having a greater diameter and an end element having a smaller diameter, the shaft blocking a through-channel of the insulating body. The through-channel is cylindrical along a length that is smaller than the length of the end element. As a result, the extinguishing gas starts to flow when the end element is pulled back into the through-channel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.