Gas insulated switchgear

Details Gas insulated switchgear Gas insulated switchgear

2007-03-23

2010-10-19

Luebke, Renee S (Department: 2833)

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

C218S051000, C218S059000

Reexamination Certificate

active

07816618

ABSTRACT:
The invention secures superior performance by restraining carbon generation also when using as an arc extinguishing medium a gas comprising the element C and having a global warming potential lower than that of SF6gas. A fixed contact section and a movable contact section are arranged opposite each other inside a sealed container filled with an insulating gas. A fixed arc contact and a movable arc contact are provided in the fixed contact section and the movable contact section. The insulating gas is a mixed gas of a gas comprising the element C, as the main constituent, and other gases. The presence of O2gas in the mixed gas has the effect of restraining the amount of carbon generated. Adding H2to the mixed gas has the effect of enhancing arc extinguishing performance, compensating for the diminished performance derived from not using actively the thermal energy of the arc.

REFERENCES:
patent: 4403125 (1983-09-01), Yamaoka et al.
patent: 4658108 (1987-04-01), Mauthe
patent: 4665289 (1987-05-01), Yanabu et al.
patent: 5761025 (1998-06-01), Iversen
patent: 6437273 (2002-08-01), Stechbarth et al.
patent: 6621030 (2003-09-01), Andou et al.
patent: H07-097466 (1995-10-01), None
patent: H07-109744 (1995-11-01), None
patent: 2000-164040 (2000-06-01), None
patent: 2002-233012 (2002-08-01), None
patent: 2003-281980 (2003-10-01), None
patent: 2004164994 (2004-06-01), None
patent: WO 2007032344 (2007-03-01), None
Toshiyuki Uchii, Hiromichi Kawano, Tetsuya Nakamoto, Hitoshi Mizoguchi, “Fundamental Properties of CO2Gas as an Arc Quenching Medium and Thermal Interruption Performance of Full-scale GCB Model” IEEJ Transactions on Power and Energy, 2004, pp. 469-475, vol. 124, 3.
“Environmental Burden of SF6and Gas Insulation Mixtures / Alternatives to SF6,” IEEJ Technical Communications, May 2001, 841.

Affiliated with

Also associated with

Rating

Gas insulated switchgear does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas insulated switchgear, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas insulated switchgear will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4212828