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7595461 |
Heavy-duty circuit breaker with erosion-resistant short-circuit current routing
The heavy-duty circuit-breaker having an axis (A), and having an arcing contact piece, a current-carrying element and an erosion protection element, with the arcing contact piece having an opening...
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7402771 |
Circuit breaker
An exemplary circuit breaker has in an enclosure filled with an insulating gas at least one interrupting chamber extending along a longitudinal axis. The interrupting chamber can be configured...
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7339132 |
Method of current interruption using puffer type gas circuit breaker with combined-action of cylinder and piston
A puffer type gas circuit breaker has a piston, which is connected with a center shaft via a link mechanism. At an initial stage of an interruption operation, the link mechanism drives a puffer...
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7041928 |
Interrupter unit for a high-voltage power switch
An interrupter unit ( 1 ) for a high-voltage power switch supported by a supporting element ( 5,6 ) radially surrounding the interrupter element ( 1 ) and consisting of two sections ( 5 a, 5 b, 6...
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6787725 |
Switching mechanism of circuit breaker for gas insulted switchgear
A switching mechanism of a circuit breaker for a gas insulated switchgear is able to extinguish arc gas by changing a volume of a compressing chamber without increasing a stroke of a movable...
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6730871 |
Compressed gas-blast circuit breaker
A hollow contact tube is provided in a compressed gas-blast circuit breaker in order to improve dielectric properties. The outlet ( 6 ) of said contact tube cooperates with a deflecting body ( 9 )...
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6660954 |
Gas-blast circuit-breaker
The gas-blasted circuit-breaker includes a movable arc contact, a fixed arc contact opposing the movable arc contact, an insulating nozzle, a puffer cylinder, a hollow conductor, an insulating rod...
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6624371 |
Circuit-breaker including a channel for emptying the piston-driven compression chamber
A circuit-breaker includes two contacts which are disposed in an interrupting space filled with a dielectric gas under pressure and between which an electric arc strikes during circuit-breaker...
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6515248 |
Gas circuit breaker
In order to provide a gas circuit breaker capable of reducing a remarkable degradation of dielectric strength in the vessel caused by hot gas and which can be downsized, the present invention is...
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6472628 |
Circuit-breaker including a moving assembly contained inside a casing filled with a dielectric gas under pressure
A circuit-breaker including a first tube, and a second tube coaxial to the first tube, the first and second tubes being connected together via a piston provided with perforations and equipped with...
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6252190 |
Electrical high speed circuit breaker with explosive charges including ablative arc extinguishing material
A simple high-speed circuit breaker which is cheap to produce is specified for alternating currents which have to be switched off, which switches such currents off within one half-cycle at the...
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6207918 |
Compressed gas power switch
The invention relates to a compressed gas switch with two contact pieces, a contact element by-passing the contact pieces when in the on position, and two isolating distances connected to each...
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6163001 |
Puffer type circuit breaker with arcing chamber, auxiliary shunting contacts and exhaust structure with pressure relief valves
Arranged in the continuation of an arcing chamber (16) bounded by consumable rings (32a, 32b) are pressure chambers (25a, 25b) which are connected in each case to a heating volume (18), which...
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6078485 |
Medium- and high-voltage gas-insulated circuit breaker with arc quenching means
A medium- and high-voltage gas-insulated circuit breaker with arc quenching capability, comprising an electrical contact which is provided with a fixed element and with a movable element which can...
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6013889 |
Method for retaining a movable contact in a circuit interrupter
A method for retaining a movable contact in a circuit interrupter is applicable to interrupters including first and second contacts, at least one of the contacts being movable. A movable element...
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5978200 |
High-voltage circuit breaker with arc gas-blast
The high-voltage circuit breaker with gas insulation is equipped with a device for gas-blast and blowout of the arc generated between the stationary arcing contact and the movable arcing contact...
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5939692 |
Gas-filled interrupter with compressible thermal expansion chamber
A compressed gas interrupter comprises two contact assemblies each including at least one wear contact and one of which is mobile along an axis relative to the other, which is fixed. The mobile...
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5808257 |
High-voltage gas-blast circuit-breaker
A gas-blast gas-insulated high-voltage circuit-breaker comprises a fixed main contact, a fixed arc contact and a mobile assembly comprising a main contact, an arc contact and a compression volume...
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5783791 |
Gas insulated interrupter
A puffer-type gas insulated interrupter has stationary and moving main contacts, stationary and moving arc contacts for discharging an arc, and a puffer cylinder for electric arc suppression. At...
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5742017 |
Circuit-breaker provided with a closure resistance having an insertion assembly
A circuit-breaker including a moving assembly having a moving main contact (14) electrically connected to a first terminal (2A), a fixed assembly having a fixed arcing contact electrically...
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5705781 |
Electrical gas-blast switch
In a gas-blast switch with a compression device to produce a quenching gas blast, in order to make the magnetic effect of the break current available already at the beginning of the cut-off...
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5610381 |
Compression gas puffer type circuit breaker
A compression gas puffer type circuit breaker has a magnetic body surrounding a conductor between a stationary arc contact and a main bus conductor. The magnetic body is protected from being...
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5600111 |
Circuit-breaker having low self-compression
A circuit-breaker including two arcing contacts that co-operate with each other, at least one of which is part of a moving contact assembly that is secured to a drive member and that is constituted...
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5578806 |
Compressed gas-blast circuit breaker
The compressed gas-blast circuit breaker includes two moving contact members (1, 2) which are guided to move counter to one another along an axis (3) in a chamber which is filled with insulating...
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5561280 |
Compressed gas-blast circuit breaker
A compressed gas-blast circuit breaker including a pump cylinder which is moved along with a movable first contact piece. The pump cylinder surrounds a pumping space and a blast chamber, the latter...
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5543597 |
Grounding switch gear device
A first puffer chamber is formed by a puffer cylinder having a substantially cylindrical flange portion and a shaft portion, and a fixedly disposed piston. The piston is formed in a cylindrical...
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5510591 |
High tension circuit breaker capable of interrupting fault currents having a delayed zero crossing
The invention relates to a high tension circuit breaker capable of interrupting alternating fault currents which have a pseudo period T. The faults occur at an instant t 0 and delay the zero...
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5495084 |
Slip-through mounting structure for circuit interrupter
The movable contact of a puffer interrupter contains a movable conductive tubular sleeve which is electrically connected to and is slidably mounted within a hollow conductive adapter which is...
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5478980 |
Compact low force dead tank circuit breaker interrupter
A dead tank high voltage SF 6 circuit breaker has a stationary cylinder SF 6 puffer section, an arc generated SF 6 pressure blast section, a moving arcing contact plug, and a moving open...
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5095183 |
Gas-blast electrical circuit breaker
A pole-unit of a gas-blast electrical circuit breaker comprises a tranverse partition made of injected insulating plastic material which at the same time performs guiding of the movable contact...
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5079392 |
Gas circuit breaker
A gas circuit breaker comprising a pair of contactors contact portions of which are separable relatively from each other, an insulating nozzle of an electrically insulating material surrounding the...
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5023415 |
Switch apparatus
A switch apparatus for use in a distribution system, having a case, a pair of bushings arranged on the case so as to oppose each other, and a breaker arranged in the case such that breaking and...
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5001314 |
High tension circuit-breaker having a dielectric gas under pressure
A high tension circuit breaker having a dielectric gas under pressure, the circuit breaker being of the type including at least one interrupting chamber comprising an insulating shell filled with...
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4983789 |
High- and medium-voltage gas circuit breakers
A high- and medium-voltage gas circuit breaker comprises a cylindrical electrically insulative enclosure filled with dielectric gas under pressure, a fixed main contact and a fixed arc contact. A...
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4918269 |
Gas-blast circuit breaker
A blast arrangement for gas-blast circuit breakers including a blast cylinder and a blast plunger, the blast plunger being designed in two pieces, arranged axially, the two pieces being rigidly...
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4883931 |
High pressure arc extinguishing chamber
An arc extinguishing chamber for an electrical switchgear device, notably a circuit breaker or a current limiting unit, comprises an almost tightly sealed case made of gas-producing insulating...
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4880946 |
High-or medium-tension compressed-gas circuit breaker taking circuit-breaking energy from the arc
A high- or medium-tension compressed gas circuit breaker taking circuit-breaking energy from the arc, the circuit breaker being of the type comprising: a fixed assembly including main contacts...
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4841108 |
Recloser plenum puffer interrupter
An interrupter (10) having an outer housing (62) adapted to contain an arc-extinguishing fluid, a fixed tubular electrical current carrying member (40) disposed at one end; a movable tubular...
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4780581 |
Suicide switch/interrupter with variable volume chamber and puffer action
A switch apparatus comprising a fixed tubular contact having an inner end, a movable tubular contact having an inner end and being movable between a closed position wherein the inner ends of the...
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4774388 |
Compressed dielectric gas circuit breaker
A compressed gas dielectric circuit breaker comprising fixed main contacts (11), fixed arcing contacts (8A), a moving assembly comprising main contacts (21) and arcing contacts (22A), a blast...
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4736080 |
Puffer type liquefied-gas self-injection circuit breaker
A puffer type liquefied-gas self-injection circuit breaker, used for the interruption at low temperature of a high current carried by a high-voltage power line. The circuit breaker comprises a...
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4711978 |
Sulfur hexafluoride circuit-breaker for operating in a very low temperature environment
A sulfur hexafluoride circuit-breaker for operating in a very low temperature environment, the circuit-breaker being of the type comprising a sealed enclosure filled with sulfur hexafluoride and...
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4678878 |
Gas pressure circuit breaker
In a gas pressure circuit breaker with two fixed contacts an insulation tube is in the path of the quenching gas flow during circuit breaking. The insulation tube is grooved internally and...
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4665289 |
Puffer type gas insulated circuit breaker
A puffer type gas insulated circuit breaker has releasably engaging stationary and movable arc contacts contained in a vessel filled with an arc extinguishing gas. An operation rod serving as a...
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4650942 |
Compressed gas high tension circuit breaker, requiring low operating energy
The invention relates to a compressed gas high tension circuit breaker requiring low operating energy. The circuit breaker is located in a gas tight enclosure filled with gas having high dielectric...
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4650941 |
Compressed gas, high tension circuit breaker, with operating energy assisted by the thermal effect of the arc
The invention relates to a compressed gas high tension circuit breaker in which the energy required for operation is assisted by the thermal effect of the arc, the circuit breaker comprising fixed...
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4649243 |
Double-acting, compressed gas, high tension circuit breaker with actuating energy assisted by the thermal effect of the arc
The invention relates to a double-acting, compressed gas, high tension circuit breaker in which the operating energy is assisted by the thermal effect of the arc, the circuit breaker comprises a...
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4639565 |
High tension arc-blast circuit breaker
A high tension arc-blast circuit breaker comprising at least one circuit breaker for breaking one phase of a polyphase current and disposed inside an insulating or metal envelope (70), said...
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4633049 |
Gas-blast switch
The gas-blast switch preferably suitable for the switching of medium voltage contains two switch pieces (2, 3), which are movable relative to one another in a housing (1), filled with insulating...
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4598188 |
Gas-blast switch
A movable and a stationary contact element are tubularly structured for the purpose of axially discharging arc gases. A blast nozzle is associated in a fixed reference position with respect to one...
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