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| Number | Title | Issue Date |
| 4211902 | Apparatus for phase switching in pumping-up power station Apparatus for phase switching in a pumping-up power station includes a phase switching device to switch over between pumping-up and generating. The phase switching device includes a pair of disconnecting switches for pumping-up and generating integrally a... | 07/08/1980 |
| 4204101 | Hybrid circuit breaker with varistor in parallel with vacuum interrupter A hybrid circuit breaker consisting of a vacuum interrupter connected in series with an SF6 interrupter has a zinc oxide varistor connected in parallel with the vacuum interrupter. The capacitance to ground of the SF6 interrupter is ... | 05/20/1980 |
| 4139752 | Gas-type circuit-breaker An improved gas-type circuit-interrupter is provided having a pair of separable contacts, which establish an arc upon separation within a confined casing having a nozzle structure. The arrangement is such that during the initial portion of the opening ope... | 02/13/1979 |
| 4131775 | Compressed-gas circuit-interrupters of the puffer-type having improved supporting, shielding and assembly features An improved compressed-gas puffer-type circuit-interrupter is provided having improved supporting, shielding and assembly features for making ready provision for a separate bench subassembly of the gas-interrupter module, and enabling its ready applicatio... | 12/26/1978 |
| 4082932 | High-voltage electric equipment cell Electrical equipment cell of the air insulated type, comprising a switch which connects a first plug which is live, to a second plug, on either side of a wall, the switch being arranged in an assembly formed by a metallic tank fixed on the wall and by two... | 04/04/1978 |
| 4016382 | Travelling switching block for metallic encapsulated high voltage switching installation A travelling switching block for a metallic encapsulated high-voltage switching installation wherein at or in a switching block housing there are assembled together into a metallic encapsulated insulated and transportable structural unit at least one inpu... | 04/05/1977 |
| 3982088 | High-voltage electric circuit breaker comprising series-connected vacuum interrupter and fluid blast interrupter This high voltage circuit breaker comprises a vacuum type interrupter and a fluid-blast type interrupter electrically connected in series and arranged to be opened substantially simultaneously so that concurrent arcing occurs in the two interrupters until... | 09/21/1976 |
| 3932720 | Gas-blast insulated, encapsulated high-voltage switching installation with removable collecting rails A gas-blast insulated, encapsulated high-voltage switching installation with removable bus bars wherein the switching installation contains components consisting of housings with flanged connections and internal elements secured therein as partitions by m... | 01/13/1976 |
