Matches 51 - 100 out of 210 < 1 2 3 4 5 >
Match Document Document Title
5347096 Electrical circuit breaker with two vacuum cartridges in series  
Inside a sealed enclosure (10) filled with sulphur hexafluoride there are housed main contacts (17,19) and an auxiliary circuit comprising two vacuum cartridges (20,21) electrically connected in...
5298704 Contact operating arrangement with shock-reducing feature for high-voltage apparatus  
Contact operating arrangement utilizing a stroke multiplier mechanism is provided for operating the contacts of high-voltage apparatus. The contact operating arrangement includes a shock-reducing...
5291369 Three-pole, metal-encased, pressurized-gas-insulated, high-voltage switchgear  
A three-pole, metal-encased, pressurized-gas-insulated, high-voltage switchgear may include a single-pole, encapsulated, high-voltage power switch. Breaker units are located in a pressure chamber...
5243160 Operating mechanism for an inert gas filled circuit breaker  
A gas-filled circuit breaker includes a hermetically sealed tank formed by a surrounding wall filled with an insulating gas, at least one pair of contacts which are arranged in the inside of the...
5239150 Medium voltage circuit breaker with operating mechanism providing reduced operating energy  
A medium voltage circuit breaker, including first and second arcing contacts, the first arcing contact being longitudinally slidable with respect to the second arcing contact between open and...
5206470 Operating device for gas circuit breaker  
An operating device for a gas circuit breaker includes an operating piston reciprocably movable between a first position and a second position, with the operating piston dividing an internal space...
5187339 Gas insulated high-voltage circuit breaker with pneumatic operating mechanism  
A high-voltage circuit breaker includes a first compartment with SF6 under pressure having stationary and movable contacts therein, and a second sealed compartment housing having an operating...
5151567 Circuit breaker control apparatus  
Circuit breaker control apparatus uses a DC motor and has only one spring for disengagement purposes.
5148913 Operating mechanism of a three-position switch  
An operating mechanism of a three-position switch having a contact-bearing main shaft comprises a switch closing and opening operation device, and an earthing device closing and opening operating...
5107081 Operating mechanism for gas filled switchgear  
A gas filled switchgear comprising a first grounding switch housed sealingly in a container and having a plurality of linearly reciprocally movable first contacts and a second grounding switch...
5075521 Interrupter switch with coordination of disconnect and interrupter linkage  
An arrangement is provided that includes a coordinating input for a mechanism of an interrupter switch; the coordinating input being derived from sensed movement of an element away from a first...
5059753 SF6 puffer recloser  
A distribution class recloser comprises puffer type, compressed-gas circuit interrupters and a spring stored energy operating mechanism. The interrupter includes a single pair of elongated and...
4983792 Interrupter switch with selective circuit-isolating feature  
An interrupter switch is provided that includes an interrupter housing that is integrally formed from insulating material. The interrupter housing defines structure to house the interrupting...
4973806 Compressed-air breaker  
The compressed-gas breaker has a movable contact member (1) and a fixed contact member (2) having in each case at least one arcing contact (6, 7) as well as, fixed on the movable contact member...
4950851 Fast operator  
A control circuit for a circuit interrupting switch having a non-stored energy operator reduces the time period between a switch command and a change of the switch contacts. The time period is...
4920242 Electric high-voltage circuit breaker  
In an electric high-voltage circuit breaker with a hydraulic drive, the piston rod, going through a seal, is brought out of the hydraulic cylinder in order to actuate the movable contact via a...
4883930 Switch mechanism operating rod  
A switch apparatus comprising a switch mechanism including a first contact, and a second contact movable into and out of engagement with the first contact for respectively closing and opening the...
4849650 Hydraulic drive for a high-voltage switchgear  
A high-voltage switchgear having a fixed and a moving contact member includes a hydraulic drive for operation of the moving contact member having a piston and cylinder configuration with a piston...
4814560 High voltage circuit breaker  
In connection with synchronous closing or opening of three-pole circuit breakers, the desired time shift between the instants of contact make or contact break in the different phases can be...
4788391 Hydraulic or pneumatic drive for actuating the movable switch contact of a medium and/or high-voltage power switch  
A hydraulic or pneumatic drive for actuation of a movable switch contact of a medium and/or high-voltage power switch, especially an SF6-gas-insulated high-voltage power switch, includes a drive...
4774628 Metalclad substation subdivided into tight compartments  
A metalclad substation having a busbar isolating switch including an operating mechanism housed in the busbar compartment. The movable contacts of the isolating switch are housed in a compartment...
4730092 Hydraulic driving device for an electric pressurized-gas switch  
In a hydraulic driving device for an electric pressurized-gas switch, the piston-cylinder systems are responsive to pressure from a hydropneumatic pressure accumulator. The driving device is...
4723058 Gas switch  
The present invention relates to a gas switch provided with a body case wherein a switching unit is installed and an arc-extinguishing gas such as sulfur hexafluoride (SF6) or the like is enclosed...
4686337 Circuit interrupter having a chemical operator with double-acting drive means  
A double-acting chemical operator drive assembly having a pair of pistons that are secured to the ends of a single piston rod and cooperate with a pair of power cylinders provide a positive drive...
4678877 Operating mechanism for a circuit-breaker, and a circuit-breaker fitted with the mechanism  
A mechanism for operating a circuit-breaker and suitable for causing a circuit-breaker to perform a rapid opening-closing-re-opening cycle, said circuit-breaker including a set of fixed contacts...
4645888 Load break switch with safety mechanism  
A single-phase ground enclosed load break switch for distribution voltages has a hermetically sealed cylindrical metal housing of from 2 to 6 inches diameter which contains an insulating gas under...
4612428 Compressed gas circuit breaker able to be assembled and disassembled without a significant loss of gas  
The circuit breaker comprises first (2A) and second (2B) compressed-gas-filled enclosures, said first enclosure containing fixed contacts and a moving assembly comprising contacts cooperating with...
4609798 Means for assembling two enclosures of an electrical cutout apparatus  
The assembling means, in view of the subsequent separation of the two enclosures of an electrical cutout apparatus, comprises an intermediate, slidable sealing air lock with means operable to...
4587390 Vacuum circuit breaker  
A vacuum circuit breaker comprises an interrupter for each phase of a three phase electrical system. Each interrupter includes a cylindrical housing for containing circuit breaker contacts. The...
4581510 Drive for a high-tension circuit breaker  
An electrical high-tension circuit breaker with main contacts and auxiliary contacts in parallel to the main contacts. Both sets of contacts are actuated by hydraulic drives which are fed from a...
4580020 Dynamic seal for gas generator chamber  
In an electric circuit interrupter actuator which utilizes gas generator chambers to activate a power cylinder to provide opening and closing of the interrupter, an improved dynamic seal is...
4570202 Gas-insulated switchgear equipment  
A plurality of breaking portions forming a vertically-disposed circuit breaker are connected in series and open and close the circuit within a gas-tight sealed enclosure. The enclosure is provided...
4539450 Disconnect switch  
A disconnect switch has a fixed tubular contact, an associated fixed auxiliary contact connected thereto, and a movable tubular contact which is guided in a stationary outer housing. The movable...
4535208 Actuating device for a high-voltage switch  
At least one actuating or cut-off spring is provided which is compressed in the cut-on or closed position of the switch and is coupled to an actuating linkage or rod leading to movable contacts of...
4531031 Pneumatic operating mechanism for a circuit breaker  
Power circuit breaker apparatus having a novel trip valve on the pneumatic operating mechanism for reducing air consumption of the pneumatic breaker operating mechanism. The novel trip valve...
4523253 Encapsulated medium-voltage electrical load switching apparatus  
An encapsulated medium-voltage electrical load switching apparatus has four, three-position rotary switches, supported by pairs of opposing insulated half-shells, two-over-two in parallel alignment...
4513187 High-voltage circuit breaker including cut-on resistor  
A series connection of an auxiliary switching position and a cut-on resistor is connected parallel to at least one primary switching position. A common drive rod is provided with which there is...
4513208 Electrical switchgear  
An electrical switchgear having a position detector that detects the state of actuation of switch contacts and a position detector which judges the locking engagement condition of the switch...
4486633 High-voltage Y-shaped dead tank circuit interrupter  
A gas-insulated circuit breaker is described which includes a Y-shaped hollow grounded metal tank formed from three appropriately shaped pipes joined together. A hollow insulating bushing is...
4484047 Metal encapsulated, pressurized gas insulated high voltage switching apparatus  
In a metal encapsulated, pressurized gas insulated high voltage disconnect switch operating at voltages above 245 kV, weak arcs drawn during the switching operation are prevented from wandering...
4467157 Pressurized gas circuit breaker including two V-mounted breaker chambers per phase  
A pressurized gas circuit breaker capable of having a breaker chamber dismantled therefrom without loss of dielectric gas comprises: a vertical insulating support (101); a intermediate structure...
4461937 Fail-safe hydraulically operated circuit breaker accumulator arrangement  
A contact operating mechanism is disclosed which employs a hydraulic motor means for moving contact members between closed and tripped positions, an accumulator for supplying hydraulic fluid under...
4451717 Circuit interrupter operating mechanism having a chemical operator with stationary combustion chambers  
An electric circuit interrupter comprising a pair of separable contacts, an operating mechanism for opening and closing the contacts and a drive mechanism including a cylinder-piston assembly and a...
4434334 Circuit interrupter  
This invention provides a new circuit interrupter construction utilizing a means of mounting the interrupter units on the roof of the control housing that supports the drive mechanism and other...
4394550 Gas-blast switch actuatable by a mechanical drive by means of a drive element  
A drive element coupled with a mechanical drive is guided out of a switch housing through a through-passage housing containing a liquid bath. In the liquid bath there is immersed a hydraulic...
4386250 Device for separably assembling two enclosures of a cut-out apparatus containing fluid under pressure  
A device for separably assembling first and second enclosures of an electric cut-out apparatus, said enclosures being filled with a dielectric fluid under pressure and having a rod for operating...
4384182 Hydraulic actuator for an electric circuit breaker  
This actuator comprises a fluid motor having a piston, a breaker-opening space at one side of the piston, and a breaker-closing space at its opposite side. An accumulator freely communicates with...
4384185 Circuit interrupting device  
A high-voltage circuit-interrupting device includes a replaceable container of pressurized arc-extinguishing fluid. A fluid port of the container is closed by a puncturable seal. When an...
4383151 Operating mechanism for a fluid blast circuit interrupter  
An operating mechanism for a fluid blast circuit interrupter which is actuated by a single drive shaft and includes a toggle linkage for opening and closing the breaker contacts, and a cam and...
4365128 High-voltage circuit breaker  
To reduce overvoltages when switching high-voltage circuit breakers, particularly when connecting unloaded overhead lines, closing resistors are used which, during closing of the breaker, are...
Matches 51 - 100 out of 210 < 1 2 3 4 5 >