US3924088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-blast power switch for high voltage
Assignee: Rockwell Automation Switzerland GmbH
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Filing: 1974-09-18
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Granted: 1975-12-02
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Expires: 1994-09-18
Abstract
Abstract A gas-blast power switch for high voltages incorporating a housing filled with gas within which there is arranged a series connection of a power interrupter and a disconnecting switch, a pump device equipped with a pump cylinder and pump piston and positively connected with a switch drive. The pump device during cut-off conveys gas into the power interrupter and during cut-on sucks-up gas. The housing is subdivided into two compartments separated by a wall, one compartment housing the power interrupter and the other the disconnecting switch. The power interrupter is formed of a ring contact pair surrounded by a ring gap nozzle arranged in the wall, the ring contact pair in its open state receiving at least the 2.5-fold phase voltage of the high voltage network, the gap of the ring gap nozzle being bounded at least at one side by an electrical insulating material, the disconnection path of the disconnecting switch being designed at least for the test voltage of the power interrupter, and the contacts of the power interrupter separate during cut-off between 20 and 50 percent of the pump piston stroke and the contact of the disconnecting switch separate at the earliest during 80 percent of the pump piston stroke.
Inventors
- 👤 Hans Heutschi
- 👤 Peter Krebs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:09
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/12; H01H33/121; H01H33/122; H01H33/70; H01H33/88; H01H33/90; H01H33/91
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
210 words
A gas-blast power switch for high voltage comprising a gas filled housing, a power interrupter and disconnector switch connected in series and arranged in said housing, a pump device equipped with a pump cylinder and a pump piston and positively connected with a switch drive, said pump device during cut-off conveying gas into the power interrupter and during cut-on sucking-up gas, the improvement comprising a wall for partitioning the housing into two compartments, the power interrupter being arranged in one compartment and the disconnecting switch in the other compartment, said power interrupter comprising a ring contact pair surrounded by a ring gap nozzle arranged in said wall, said ring contact pair receiving in the open state of its pair of contacts at least 2.5fold phase voltage of a high voltage network, said ring gap nozzle having a gap bounded at least at one side by electrically insulating material, said disconnecting switch being provided with contacts and having disconnecting path which is designed at least for the test voltage of the power switch, the contacts of the power interrupter during cut-off separating between 20 and 50 percent of the pump piston stroke and the contacts of the disconnecting switch separating no earlier than at 80 percent of the pump piston stroke.
Claim 2
Dependent Claim
210 words
A gas-blast power switch for high voltage comprising a gas filled housing, a power interrupter and disconnector switch connected in series and arranged in said housing, a pump device equipped with a pump cylinder and a pump piston and positively connected with a switch drive, said pump device during cut-off conveying gas into the power interrupter and during cut-on sucking-up gas, the improvement comprising a wall for partitioning the housing into two compartments, the power interrupter being arranged in one compartment and the disconnecting switch in the other compartment, said power interrupter comprising a ring contact pair surrounded by a ring gap nozzle arranged in said wall, said ring contact pair receiving in the open state of its pair of contacts at least 2.5fold phase voltage of a high voltage network, said ring gap nozzle having a gap bounded at least at one side by electrically insulating material, said disconnecting switch being provided with contacts and having disconnecting path which is designed at least for the test voltage of the power switch, the contacts of the power interrupter during cut-off separating between 20 and 50 percent of the pump piston stroke and the contacts of the disconnecting switch separating no earlier than at 80 percent of the pump piston stroke.
Claim 3
Dependent Claim
24 words
The gas-blast power switch as defined in claim 1, wherein said wall which partitions said housing at least partially consists of electrically insulating material.
Claim 4
Dependent Claim
36 words
The gas-blast power switch as defined in claim 2, further including a follower piston arranged in said wall between both compartments and carrying one contact of the power interrupter and one contact of the disconnecting switch.
Claim 5
Dependent Claim
27 words
The gas-blast power switch as defined in claim 3, wherein said wall partitioning said housing is displaceable therein and serves as the piston of the pump device.
Claim 6
Dependent Claim
40 words
The gas-blast power switch as defined in claim 3, wherein the ratio of the spacing of the contacts of the open power interrupter to the gap width of the ring gap nozzle is greater than 1 and smaller than 10.
Claim 7
Dependent Claim
82 words
The gas-blast power switch as defined in claim 5, wherein the series connected power interrupter and disconnecting switch are bridged by a parallel disconnector switch intended to carry the rated current of the power switch, said parallel disconnector switch having contacts, and wherein during the cut-off the contacts of the parallel disconnector switch initially separate, and during the cut-in movements are the last to close, and wherein the contacts of said parallel disconnector switch coaxially enclose the contacts of the power interrupter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |