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7343137 Circuit, switching module comprising the same, and use of said switching module  
The invention relates to a circuit comprising an antenna input ( 1 ), a signal input ( 2 ) and a signal output ( 3 ), and a switching unit ( 4 ), wherein the antenna input ( 1 ) is connected to a...
6838631 Power use circuit breaker and electrical circuit arrangement for electric power generation plant  
A power use circuit breaker includes an arc generating switching unit which adds an electrical resistance in a circuit during current interruption to attenuate a current to be interrupted, a vacuum...
6284993 Ball-locked mechanism for inserting a closure resistor  
A mechanism for inserting a closure resistor serves for an electrical switch which contains a semi-moving arcing contact secured to a metal rod connected to the resistor. The mechanism includes a...
6242707 Arc quenching current limiting device including ablative material  
A current limiting device for protecting electrical circuits has a case and a pair of separable electrodes disposed within the case. Each electrode has a plurality of openings with an ablative...
6201204 Closure resistor assembly for high voltage electrical gear  
A closure resistor assembly for high voltage electrical gear. The assembly includes a multiplicity of resistive electrical components aligned in a row along an axis, and a mechanism which exerts a...
6049049 Surge arrester  
5841614 High voltage circuit breaker with insertion of resistance on closure  
A high voltage circuit breaker with insertion of resistance on closing, wherein the resistance is inserted by a fixed insertion electrode co-operating with the end of the moving main contact, the...
5814782 Rower circuit-breaker having a closing resistor  
The power circuit-breaker is provided with at least one arcing chamber which extends along a central axis and has at least one power interruption point with at least one contact which is moved by a...
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...
5734140 Gas insulated high voltage circuit breaker including tulip contact assembly and insertion resistor  
A circuit breaker includes a tank grounded and filled with an insulating gas, a first electrical series-connected section having a main conductor and a main breaking section, and a second...
5717184 High-voltage circuit-breaker that inserts a resistance on closure  
The present invention relates to a high-voltage circuit-breaker including a casing that is filled with a dielectric gas and that contains a first arcing contact and a second arcing contact, which...
5668360 Circuit-breaker having two interrupting chambers per pole with drive mechanism and drive rods isolating insert capacitors  
A circuit-breaker having two interrupting chambers per pole, the chambers being disposed in a T or V configuration at the end of a column provided at its base with a control system for operating a...
5604340 Gas insulated switchgear insertion resistor and main contacts operating mechanism having time delay feature  
A gas circuit breaker having a resistance circuit breaking portion connected in parallel with a main circuit breaking portion includes a main circuit breaking portion actuating mechanism and a...
5567924 Circuit breaker with parallel resistor  
A circuit breaker with parallel resistor which can satisfy contradictory requirements to induce a preliminary discharge at the time of closing action and to maintain a high interelectrode...
5509558 Metal oxide resistor, power resistor, and power circuit breaker  
A metal oxide resistor for suppressing variations in resistivity in use in an atmosphere at a high temperature or humidity. Such a metal oxide resistor includes a sintered body in which carbon...
5495083 Electric switch device with separable contacts including fixed contact mounted current limiter and shunt conductor  
An electrical switch device with separable contacts is provided with a shunt conductor adapted to receive one end of the arc that is struck when the contacts separate after it has jumped a...
5484972 High-voltage gas sealed switchgear including series connected switches and closing resistor  
A high-voltage switching device for gas-insulated switchgear has a gas-filled metal housing, a conducting path in the metal housing and at least two series-connected switching points with movable...
5457294 UHV breaker provided with resistances  
A resistance-provided UHV breaker includes a tank, a main contact unit, a resistance unit, and a resistance contact unit. The main contact unit includes plural main contacts arranged in the axial...
5451731 Circuit breaker and driving mechanism thereof  
In a double-break type circuit breaker having resistor contacts which are to be connected in parallel with main contacts in not only closing operation but also breaking operation, the resistor...
5428195 Current limiter unit for molded case circuit breakers  
A self-contained current limiter unit allows lower short-circuit-rated circuit breakers to be utilized within industrial applications. The unit is electrically-connected in series with the circuit...
5424504 Resistor-provided UHV breaker having delaying/operating mechanism for making and breaking main contacts and resistor contacts  
A resistor-provided UHV breaker has a tank sealing an insulating gas therein, a main contact unit located in the tank, a resistor unit connected parallel to the main contact unit, a resistor...
5401923 Resistor-provided UHV breaker  
A resistor-provided UHV breaker includes a tank, a main contact unit, a resistor unit, a resistor contact unit, support members, and a displacement absorbing system. The support members are...
5391930 Circuit breaker with parallel resistor  
A circuit breaker with a parallel resistor which fulfills with a simple structure incompatible requirements for a resistance circuit making contact with regard to maintenance of the dielectric...
5373129 Power circuit breaker and power resistor  
A compact power circuit breaker having a large breaking capacity and stable breaking performance by using a compact closing resistor unit having high performance. The power circuit breaker includes...
5353186 Reactor switch  
The reactor switch is provided for switching on and off a reactor (2) in a multiphase electrical high-voltage network. It has switch poles (3) which are arranged phase-by-phase between the reactor...
5304760 Ultra-high-tension circuit-breaker  
The present invention relates to an ultra-high-tension interrupting chamber comprising a main chamber including an insulating case containing permanent contacts, arcing contacts and two closing...
5302784 Circuit breaker inertia contact assembly for resistance insertion during opening and closing operations  
An inertia contact designed to co-operate with a contact in series with a component, such as a resistor or a varistor, is disposed in the interrupting chamber of a circuit-breaker so as to be...
5276285 High rupture capacity circuit-breaker  
A high-voltage circuit-breaker has an interrupting chamber comprising a gas-tight cylindrical casing filled with a gas having good insulative properties such as sulfur hexafluoride. The casing...
5262605 Surge-limiting circuit breaker  
A surge limiting circuit breaker has, for each phase, at least one interrupting chamber constituted by a gastight insulating enclosure filled with a gas having high dielectric strength. The...
5245145 Modular closing resistor  
A modular closing resistor assembly can be added in line with the interrupter assemblies of an extra high voltage circuit breaker and has a relatively short length. The resistor element consists of...
5241294 Varistor and resistor device for the interrupting chamber of circuit breaker  
A varistor and resistor device for incorporating in the interrupting chamber of a dielectric gas circuit breaker, the varistor and resistor components being connected in series and being housed in...
5225642 Disconnecting switch  
In a disconnecting switch having a current-breaking duty, a stationary arc contact (18, 38) is held via a resistor (21, 41), and an end part of the stationary arc contact is arranged to engage with...
5198630 Resistance insertion type circuit-breaker  
A high-voltage circuit-breaker comprises a first insulative support column carrying a first current terminal and a pivoting cut-off arm provided with a first contact. An insulative column rotates...
5170023 Circuit breaker with varistor-assisted interruption  
A circuit breaker comprising, for each pole, at least one interrupting chamber having fixed contacts and moving equipment including a moving contacts, and in parallel with each interrupting chamber...
5164559 Circuit breaker with an incorporated varistor  
An SF 6 circuit breaker having a varistor incorporated in line with its interrupting chamber in which insertion of the varistor on opening and closing is performed by coaxial translation of two...
5136451 Current limiter  
A fault current limiter in which a resistor is inserted by a running arc. The arc is allowed to burn in a commutating unit until the current zero-crossing. Upon the passage through zero the arc is...
5001312 High current repetitive switch having no significant arcing  
A high current direct current switch which has no significant arcing and which is capable of high rate repetitive operation. A collector member has a plurality of electrically conductive leaves...
4943795 Oxide resistor  
A composite sintered oxide resistor comprising crystal grains of zinc oxide and crystal grains of a zinc oxide compound of other metal or semi-metal element than zinc, and a grain boundary layer...
4938113 Electromagnetic projectile launcher with reduced muzzle arcing and associated method  
Electrical circuitry for preventing or substantially reducing electrical arcing at the muzzle of an electromagnetic projectile launcher. The circuitry provides a plurality of switches which...
4822961 Soft break switch  
A soft break switch for forming a short circuit between two conductors while the switch is in a closed position, for forming an increasingly resistive circuit between the conductors while the...
4788390 Shunt capacitor switch with an impedance insertion element  
A high voltage switch for switching capacitor banks in and out of a circuit. The switch includes two sets of contacts to perform the switching function. An impedance element is connected in...
4774387 Dielectric gas high-tension circuit-breaker having a closure resistance  
A high-tension circuit-breaker having a circuit-breaking chamber filled with a dielectric gas under pressure and including a resistance disposed coaxially with the circuit-breaking chamber and an...
4749829 Circuit breaker  
A circuit breaker has current-limiting resistances (12) which are provided between a base (1) and a cover (18) and which limit a current to a tripping bimetal (11) for preventing fusing of the...
4742423 Gas insulated apparatus  
A gas insulated apparatus for high voltage, 3-phase applications in which an insulating, self-arc-extinguishing gas separates the high voltage lines from grounded vessels. According to the...
4739136 Control device of a high voltage circuit breaker equipped with closing resistors  
A high voltage self-blowing circuit breaker with closing resistors is equipped with an auxiliary contact inserted in the trip control circuit of an electrical circuit breaker. The auxiliary contact...
4738181 Repetitive high-current opening switch for railguns  
A very low inductance, high current, repetitive opening switch for railguns. A specific embodiment has a circular rotor positioned behind the rails with its rotational axis coaxial with the railgun...
4714974 Current limiter  
A current limiter for high voltage utilizes the high migration velocity of an arc for rapidly inserting at least one pair of resistive runner rails upon a short-circuit in a circuit. To be able...
4709294 Device for contact protection and arc prevention of a switch  
A device for preventing contact defacing and arc prevention which comprises a triac bearing a momentary opening or shutting of a current, fixed terminals (A) and (B) bearing the continuous current,...
4695918 Pre-insertion inductor arrangement  
A pre-insertion inductor arrangement is provided for a circuit interrupting device or high voltage switch to reduce audible and electrical noise and to limit transient inrush current and/or...
4685019 Controlled electrical contacts for electrical switchgear  
Most contacts that are used in electrical switchgear are prone to erosion due to electrical arcs that are developed at the make and break of a circuit. Arcing is one of the major problems that can...
Matches 1 - 50 out of 158 1 2 3 4 >