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7414827 |
Gas-insulated switchgear device
Disclosed is a gas-insulated switchgear device, in which a space for dismantlement and inspection work which facilitates the dismantlement and inspection work of circuit breakers at the time of the...
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7154061 |
Interrupter assembly for a circuit breaker
A preferred embodiment of an interrupter assembly for a circuit breaker includes a first contact, a conductor, and a second contact mounted on the conductor. The second contact and the conductor...
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6631075 |
Switchgear
The instrumentation transformers 6 a to 6 d and 7 a to 7 f for measuring the voltage of the main circuit are arranged within the container 15 b located in the midst of the containers 15...
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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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6111212 |
Interrupt assembly for a primary circuit breaker
An interrupt assembly for a primary circuit breaker of a distribution transformer includes an elongated housing that is divided into separate chambers for holding insulating fluid that extinguish...
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5936217 |
Switching apparatus and activation suppression method for electric contact
A switching apparatus wherein the life and the reliability of an electric contact are improved by fundamentally suppressing formation of black powder and activation of the surface of the contact by...
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5717183 |
High-voltage power switch with a cooling device for cooling the quenching gas
An electric high-voltage power switch has two contacts and at least one gas outlet for quenching gas heated by the arc generated between the contacts. A cooling device is provided for cooling the...
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4935165 |
Method for preventing the poor conduction at electrical switch contacts which is caused by organopolysiloxane gas
The poor electrical conduction at an electrical switch contact caused by organopolysiloxane gas can be prevented by providing that a nitrogenous base gas be simultaneously present with the...
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4845460 |
Multipole low-voltage circuit breaker with an insulating material housing and arc-quenching chambers
A multipole low-voltage circuit breaker with an insulating material housing and arc quenching chambers. By a new mechanical design, the installation of the arc quenching devices is to be...
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4788392 |
Tank type gas circuit breaker
A tank type gas circuit breaker for a three-phase alternating current, comprises: three hollow members spaced in parallel with each other; a single stationary side end plate air-tightly fixed to...
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4716266 |
Electrical arc quenching chamber, in particular for fluid-quenched circuit breakers
The present invention relates to an electrical arc interruption chamber, in particular for fluid-quenched circuit breakers, in which, inside a tightly sealed insulating encasing, containing an...
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4684773 |
Gas-blast switch
A gas-blast switch preferably suitable for the switching of medium voltage has two switch pieces interacting in an insulating gas filled housing. A fixed switch piece is provided with a hollow...
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4604508 |
Electric circuit breaker of the type using an arc quenching fluid with pressure self-generating due to the breakdown of the fluid
In an electric circuit breaker of the type using an arc quenching fluid with pressure self-generating by the breakdown of the fluid due to the same arc, comprising, inside a tightly sealed...
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4563556 |
Internal combustion circuit breaker
An internal combustion electrical circuit breaker comprising at least one: (a) insulating cylinder; (b) pair of electrical conductors penetrating the cylinder approximately perpendicular to its...
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4553008 |
Load interrupter
An load interrupter is disclosed having the characteristics of an ordinary puffer interrupter and a self-extinguishing gas flow interrupter. The load interrupter comprises a generally hollow...
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4485283 |
Current limiter unit
A current limiter unit employs both a magnetic repulsion field and a gas pressure force to direct arcs to within the high voltage region of an arc chute. The unit confines the evolved gas pressure...
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4465910 |
Self-generating gas flow interrupter
An electrical circuit interrupter is disclosed having the characteristic of a puffer interrupter and a self-extinguishing gas flow interrupter. The interrupter comprises a generally hollow movable...
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4459447 |
Self extinguishing type gas circuit breaker
A self extinguishing type gas circuit breaker includes a body member having a first end connected to a terminal plate and a second end with a nozzle formed of electrical insulation material and...
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4444671 |
Arc extinguishing material
An arc quenching composition suitable for deionizing and extinguishing a high voltage electrical arc comprising an effective proportion of hexamethylenetetramine. Depending on the application in...
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4436831 |
Calcined member for arc-extinguishing chambers
A calcined member for arc-extinguishing chambers which are installed in electromagnetic contactors and magnetic circuit breakers for high-voltage applications. The calcined member consists of an...
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4413062 |
Molding composition and product produced therefrom
A ceramic useful as an electrically insulating material is produced by calcining wollastonite powder, admixing the calcined powder with phosphoric acid of certain P 2 O 5 concentration range,...
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4375023 |
Gas-blast switch
A movable, tubular-shaped contact element is displaceably guided in a partition wall subdividing the internal space of the gas-blast switch housing into an extinguishing chamber and an expansion...
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4313099 |
Current limiting fuse having aluminum sulfate arc-quenching filler
A current limiting fuse construction including a fuse element extending between electrically conductive terminals carries a body of arc-quenching filler material within a hollow casing of...
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4306130 |
Arc self-extinguishing switch device
A switch comprises an envelope including a pressure increasing compartment filled with an arc extinguishing fluid. A slit extends through one longitudinal side of the envelope to communicate with...
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4280098 |
Coaxial spark gap switch
The switch is usable for switching currents of 40 kiloamperes at 250 kilovolts to produce current pulses a few nanoseconds in duration at kilohertz rates. In a preferred embodiment, the switch...
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4202591 |
Apparatus for the remote grounding, connection and disconnection of high voltage electrical circuits
A high voltage electrical connector of the type employed to connect a high voltage cable to the terminal of an electrical apparatus, such as a transformer, in a power distribution circuit is...
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4192572 |
Electrical connector apparatus
Apparatus for connecting and disconnecting a male contact element and a high voltage cable includes a housing securable to the cable and defining an axial passage having a cavity, a piston assembly...
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4170394 |
High voltage separable connector system with modified dwell position
A separable electrical connector assembly includes mating rod connector and bore switch modules. The bore switch module includes a grasping bore contact member for electrically engaging with a rod...
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4143256 |
Arc chute having plates coated with weld deterent material
An arc chute for assisting in the extinction of an arc drawn between circuit interrupting contacts opening in air includes a stack of closely spaced metallic plates coated with a weld deterent...
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4131329 |
Current interchange for a gas actuated bushing
A high voltage bushing for an electrical device such as a transformer, the bushing including a fixed cylindrical conductor and a gas actuated bore contact mounted for reciprocal movement in the...
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4116515 |
Spring actuated contact for high voltage bushing
A high voltage bushing having a bore contact mounted for axial movement within the bushing housing, the bore contact being biased for movement into engagement with a rod contact and a magnetically...
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4066322 |
Male contact assembly for use in loadbreak
A male contact assembly for high voltage switching applications includes a male contact with an electrically insulative member arranged concentrically with the contact and extending longitudinally...
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4059816 |
Electrical loadbreak fuse and canister assembly
An electrical loadbreak fuse and canister assembly with arc quenching means operative upon withdrawal of the fuse from the canister or upon insertion of the fuse in the canister under either load...
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4052555 |
Gaseous dielectric compositions
Perfluorinated ethers evidence useful properties as gaseous dielectrics and do not exhibit a high carbon tracking tendency, which is commonly a problem with halogenated alkanes. Mixtures of the...
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4045113 |
Connector safety tip
A safety tip for a connector contact of the type having a conductive body surrounding the contact is provided. The tip is made of an insulating material, preferably plastic.
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4011426 |
Device with arc-extinguishing system
A device for extinguishing electric arcs, especially a circuit interrupter, in which electrodes and/or other parts are used for striking an arc during the circuit opening, which consist at least in...
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4008943 |
High voltage cable terminator having a fault actuated probe
A quick-make, quick-break probe contact assembly for connecting a high voltage cable to a high voltage bushing, the probe contact assembly being mounted in a cable terminator and including a...
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4006330 |
Circuit breaker arc chute having components of refractory inorganic material with surfaces of an amorphous fused material, a major proportion of which is silica, and method for making same
This arc chute comprises an arc-confining portion of an electric insulating material comprising the heat and pressure reacted thermoset product of a mixture of chrysotile asbestos, orthophosphoric...
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3989342 |
Chambered arc snuffing tube for bushing assembly
A load break bushing assembly for high voltage electrical systems is disclosed. The bushing assembly is normally connected to a stationary object such as a transformer to dispose a female electrode...
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3984651 |
Electrical loadbreak arc quenching and containing assembly
An electrical loadbreak device in which the arc established between two loadbreaking contacts is first confined to a narrow gap between the confronting surfaces of two insulating members formed of...
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3958855 |
Electrical connector
An electrical termination for use with a high voltage underground cable system wherein a large degree of arcing may occur between two electrical structures as they are brought together under short...
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3930709 |
Electrical connector
An electrical connector includes complementary contact elements, one contact element being supported for axial movement in its housing as part of a contact assembly also including a piston and a...
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3920307 |
Arc-out shut off valve assembly for a high voltage bushing
A high voltage cable termination bushing for terminating a high voltage cable and including a housing having an axial passage, an electrically conductive receptacle within the passage and supported...
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3912650 |
Hydrated zinc borate, dimethyl silicone resin arc extinguishing material
Arc-extinguishing materials are selected in accordance with criteria such as first ionization potential of each of the constituents, carbon content, boiling, sublimation, or decomposition...
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3884542 |
Pressure actuated electrical bypass circuit for a high voltage bushing
A bushing having an electrical contact mounted within an insulating housing, the electrical contact being supported in a position to receive the electrically conductive probe on a high voltage...
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3818165 |
ELECTRIC CIRCUIT INTERRUPTER
Discloses a circuit interrupter in which an arc is established during circuit interruption. Along the path of the arc, there is provided arc-extinguishing structure from which arc-extinguishing gas...
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3800111 |
ELECTRIC SWITCHING DEVICE COMPRISING INSULATING PARTS REINFORCED WITH POLYVINYL ALCOHOL FIBRES
An electric switching device with insulating parts of mouldings, particularly extinguishing chamber plates in an arc extinguishing chamber, such mouldings being formed of resin binder reinforced...
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3792215 |
ELECTRICAL LOAD-BREAK APPARATUS
An electrical power disconnect device having an arc-quenching sleeve which extinguishes generated arcs. The sleeve is positioned around a conductor probe which is inserted into a contact structure...
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3761660 |
ARC INTERRUPTING COMPOSITION AND APPARATUS
An arc interrupting composition for the arc-exposure walls or surfaces of electric circuit interrupting devices. The composition comprises a combination of hydrated alumina and melamine in a binder...
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3735074 |
ARC CHUTE FOR AN ELECTRIC CIRCUIT BREAKER
An arc chute for an electric circuit breaker comprises insulating sidewalls and plates, or fins, of insulating material that extend transversely of the sidewalls and have edges for engaging the arc...
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