Patent · US Active

Vacuum interrupter chamber and contact arrangement for a vacuum circuit breaker

US7906742B2 · kind B2 · utility

9Cited by

3References

11Claims

0Family size

Assignee

ABB RESEARCH LTD. · CH

Inventors

Alexander Steffens · Lübeck, DE
Dietmar Gentsch · Ratingen, DE
Kaveh Niayesh · Tehran, IR

Key dates

Filing date	Jun 22, 2005
Grant date	Mar 15, 2011
Priority date	—
Expiry date	Apr 22, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH01H33/6643
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a contact arrangement for a vacuum interrupter chamber (1), which comprises a pair of inner contact pieces (11, 12), configured as RMF contact pieces, and a pair of outer contact pieces (21, 22) which are connected in parallel and are mounted closely adjacent to the inner contact pieces (11, 12). At least one of the inner contact pieces (11, 12) is movably mounted. The outer contact pieces (21, 22) are also configured as RMF contact pieces. During interruption, the resulting electric arc can commutate completely or partially to the pair of outer contact pieces (21, 22). The inner contact pieces are substantially discoid. Advantageously, the contact pieces (11, 12, 21, 22) are coaxially positioned in relation to each other. The outer contact pieces (21, 22) are advantageously pot-shaped or tubular.

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