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| Number | Title | Issue Date |
| 4479165 | Gas insulated switching apparatus A bushing in air is supported upright on one end of a horizontal tank, and a center conductor extending in the bushing is connected to one terminal of a circuit breaker accommodated in the tank. A tank of a disconnecting switch is disposed to extend in th... | 10/23/1984 |
| 4468716 | Gas-insulated switchgear A gas-insulated switchgear apparatus comprises, (a) first and second grounded tanks filled therein with insulating gas, (b) a circuit breaker unit enclosed in the first tank, (c) a disconnecting switch unit connected to an axial extension of the first tank and encl... | 08/28/1984 |
| 4460937 | Gas-insulated switching apparatus A gas-insulated switching apparatus is disclosed which includes a circuit breaker having a breaking section with at least a couple of mutually detachable contacts and a grounded tank containing the breaking section and filled with an insulating gas, the g... | 07/17/1984 |
| 4429199 | Three-pole cable connecting unit for a three-pole metal-encapsulated, high-voltage switching installation A three-pole cable connecting unit for a compressed gas-insulated high-voltage switching installation is disclosed having three cable connecting elements, a three-pole isolating switch and (optionally) a three-pole ground mechanism, as well as two three-p... | 01/31/1984 |
| 4428027 | Gas-insulated substations A gas-insulated substation comprises at least two transformers arranged side by side on a first floor, gas insulated switching apparatus including disconnecting switches disposed on a second floor at a level different from that of the first floor, and bra... | 01/24/1984 |
| 4291363 | Gas-insulated switchgear apparatus A gas-insulated switchgear apparatus is disclosed in which three-phase power transmission lines are anchored to associated entry gantries respectively while maintaining a required vertical open-air insulation distance between the power transmission lines,... | 09/22/1981 |
| 4250535 | Electric switch gear section An electric switchgear having an understructure without insulating gas is provided with a metal encapsulation for each phase which consists of two containers filled with insulating gas. A vacuum switching tube is vertically disposed in one container. The ... | 02/10/1981 |
| 4241379 | Gas pressurized high voltage switching installation In pressurized, gas insulated, high voltage switching installations with single or polyphase metal encapsulation, a switchgear section comprises several adjacent pressure tanks having gas tight partitions for accommodating the high-voltage switchgear and ... | 12/23/1980 |
| 4237520 | Gas insulated switch-gear apparatus A gas insulated switch-gear apparatus having first and second base planes is disclosed. Arranged on the first and second base planes are feeder switching apparatus comprising gas filled circuit breakers and first and second gas insulated disconnecting swi... | 12/02/1980 |
