Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1985-09-18
1987-04-14
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148R, H01H 3388
Patent
active
046581081
ABSTRACT:
A gas-blast switch, preferably suitable for switching high voltages, has two arc contacts which can be moved relatively to each other along an axis. Also included are a heating volume and a compression volume concentrically formed around the axis. Quenching gas is compressed in the compression volume by means of a compression slider. As soon as the gas pressure is sufficiently high, a part of the quenching gas flows via a back-pressure valve into the heating volume and there assists in blasting an arc drawn between the arc contacts during a switching-off process. The assist is needed primarily when only small currents are involved in which case only comparatively low quenching gas pressure is developed in the heating volume. The switching-off capacity of the gas-blast switch is increased with simultaneous reduction in the needed actuating energy. This is achieved in that the arc contact of a moving contact member has a discharge duct which extends in axial direction from a free end facing a fixed contact member to another end which opens into the expansion. volume. Between the compression volume and the expansion volume a device is provided for controlling the pressure and for refilling the quenching gas located in the compression volume.
REFERENCES:
patent: 4475018 (1984-10-01), Arimoto et al.
BBC Brown Boveri & Company Ltd.
Macon Robert S.
LandOfFree
Gas-blast switch 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-blast switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas-blast switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1787814