Patent application number | Description | Published |
20090120773 | METHOD FOR QUENCHING A FAULT ARC, WITHIN A MEDIUM-VOLTAGE AND HIGH-VOLTAGE SWITCHGEAR ASSEMBLY, AS WELL AS SHORTING DEVICE ITSELF - The disclosure relates to a method for quenching a fault arc in a medium-voltage and high-voltage switchgear assembly, in which at least one shorting element is connected between the phases of a three-phase distribution board. In order to allow more reliable fault arc quenching in this case, the disclosure proposes that the fault arc is detected by means of sensors and an explosive charge which acts directly on the shorting switching element fires the shorting switching element at a conical contact structure which is connected to the three-phase conductors and is configured in a complementary manner to the shorting switching element, in such a manner that the complementary contours of the shorting switching element and of the three-phase conductors result in self-locking retention in the shorting position, without any holding force. | 05-14-2009 |
20090218318 | VACUUM SWITCHING CHAMBER FOR MEDIUM-VOLTAGE SWITCHGEAR ASSEMBLIES - Vacuum switching chamber is disclosed for a medium-voltage switchgear assembly having one or more ceramic cylinder tube sections which are closed both on the fixed-contact side and on the switching-contact side by metallic covers. In order in the process to achieve a situation in which a vacuum switching chamber is further improved in terms of its resistance to external pressure the disclosure proposes providing at least one of the covers, on the inside and/or outside, with an inlay which increases the resulting wall thickness, an outer cover or outer ring, which inlay, outer cover or outer ring rests at least partially cohesively in the cover or on a cover on the outside. | 09-03-2009 |
20100108643 | SWITCHING DEVICE WITH A VACUUM INTERRUPTER CHAMBER - The disclosure relates to a switching device with a vacuum interrupter chamber in which at least one moving contact piece is arranged. To considerably increase the switching rating and the dielectric strength, the disclosure proposes that two series-connected contact arrangements with a total of two contact levels which can be opened are arranged within a vacuum interrupter chamber. | 05-06-2010 |
20100129254 | METHOD FOR PRODUCTION OF A CONTACT PIECE FOR A SWITCHGEAR ASSEMBLY, AS WELL AS A CONTACT PIECE ITSELF - The disclosure relates to a method for production of a component, such as a contact piece, for a switchgear assembly. To introduce a slot and apply a contact outer contour directly during the powder-metallurgical production process of the contact material, contouring in the form of a slot or slots is introduced into the powder-metal material, which is located in a mold, essentially in a direction parallel to a normal to a surface of the component, to form the component with a slot. | 05-27-2010 |
20100155371 | SHORT-CIRCUIT DEVICE FOR MEDIUM AND HIGH-VOLTAGE SWITCHING DEVICES - A short-circuit device is provided for medium and high-voltage switching devices, in which at least one moving contact is moved onto a fixed contact by means of a propelling charge. Two contact arrangements are provided in series to provide a higher dielectric strength. Each of the contact arrangements includes a fixed contact and a moving contact. A first fixed contact of a first one of the contact arrangements contains a mechanical ignition device for providing a propelling charge to a moving contact of the second one of the contact arrangements, such that when the moving contact reaches the fixed contact of the first contact arrangement, the propelling charge is mechanically ignited to cause the moving contact of the second contact arrangement to be propelled toward the fixed contact of the second contact arrangement. | 06-24-2010 |
20100181182 | BREAKER WITH A GAS DRIVE FOR LOW-VOLTAGE, MEDIUM-VOLTAGE AND HIGH-VOLTAGE SWITCHING DEVICES - An exemplary breaker is disclosed with a gas drive for low-voltage, medium-voltage and high-voltage switching devices, in which disconnection can be generated via detonation capsules. To ensure that a low number of connection and disconnection operations in relation to the total operating duration of the circuit breaker is taken into consideration in design terms, without in the process reducing safety, exemplary embodiments include a piston/cylinder arrangement with a plurality of detonation capsules for generating a limited number of connection and disconnection operations in the cylinder in each of the two cylinder subareas which are separated by the piston. | 07-22-2010 |
20100181291 | POLE PART OF A MEDIUM-VOLTAGE SWITCHING DEVICE - The present disclosure provides a pole part of a low-voltage, medium-voltage and/or high-voltage switching device. The pole part includes a vacuum interrupter chamber having a fixed contact and a movable contact, which includes an electrical contact piece. The vacuum interrupt chamber is cast into an insulating material. The insulating material has opening at the bottom in at least one of a region of the movable contact and a drive rod driving that drives the movable contact. To reduce the heating of the pole part to enable production of a higher rated current carrying capacity, in the region of the movable contact and/or the articulation point of the drive rod, at least one ventilation opening is formed to pass through at least one of an exterior wall of the insulation, a boundary zone between the insulation and the electrical connection piece, and the electrical connection piece. | 07-22-2010 |
20100206848 | METHOD FOR PRODUCTION OF A POLE PART OF A MEDIUM-VOLTAGE SWITCHING DEVICE, AS WELL AS THE POLE PART ITSELF - A method for production of a pole part of a medium-voltage switching device, and a pole part are provided. To obviate costly pressure reinforcements at least on the switching contact side of the vacuum interrupt chamber in the area of the mold core, while also achieving an optimum injection-molded result, a compensation ring is positioned, before the encapsulation process, as a separate injection-molded seal on or close to the external circumferential line of a vacuum interrupt chamber cover, between the lower cover of the vacuum interrupt chamber and the mold core. The positioned compensation ring is also encapsulated so as to remain in the encapsulation, and the mold core is then removed. | 08-19-2010 |
20100219162 | LOW-VOLTAGE, MEDIUM-VOLTAGE OR HIGH-VOLTAGE SWITCHGEAR ASSEMBLY HAVING A SHORT-CIRCUITING SYSTEM - A switchgear assembly includes a vacuum interrupt chamber and a short-circuiting system arranged in the vacuum interrupt chamber. To enable rapid switching with physically simple means, a vacuum area of the vacuum interrupt chamber in which a fixed contact piece is placed is subdivided via a membrane, which is provided with a breaking line and which can be penetrated by a moving piston system to the contact piece during switching. The switchgear assembly can be utilized in a low-voltage, medium-voltage or high-voltage assembly. | 09-02-2010 |
20100300852 | LOW-VOLTAGE, MEDIUM-VOLTAGE OR HIGH-VOLTAGE SWITCHGEAR ASSEMBLY WITH AT LEAST ONE MOVEABLE CONTACT - An exemplary switchgear assembly is disclosed with at least one moveable contact piece, in which the moveable contact is connected to a connection piece electrically with a flexible connection means. A connection between the connector strip and the connection piece of the pole part is provided. The connection can have relatively low electrical and thermal resistance. A flexible connection means is connected to the connection piece directly or with an intermediate piece, which can be connected to the connection piece, cohesively or at least unreleasably. | 12-02-2010 |
20110120976 | POLE PART OF A MEDIUM-VOLTAGE OR HIGH-VOLTAGE SWITCH GEAR ASSEMBLY, AND METHOD FOR ITS PRODUCTION - A pole part of a switchgear assembly having a vacuum interrupter chamber is provided. To ensure that heat is dissipated to the exterior for convection, a thermally conductive heat transmission element in the form of a cylindrical casing is provided between the vacuum interrupter chamber, a contact holder and an encapsulation casing. An inner surface of the heat transmission element rests on the vacuum interrupter chamber and the contact holder, and an outer surface of the heat transmission element rests on an inner surface of the encapsulation casing inner surface. The heat transmission element can be produced from a thermally conductive plastic using an injection-molding or molding-compound production process. The heat transmission element can be connected to the pole part through openings. The heat transmission element can be arranged before the encapsulation of with an encapsulation compound, and be cast in the encapsulation casing. | 05-26-2011 |
20110163070 | LOW-VOLTAGE, MEDIUM-VOLTAGE OR HIGH-VOLTAGE ASSEMBLY - The disclosure relates to a voltage assembly having at least one short circuiting device in which a moving contact piece can be closed onto a fixed contact piece. In order to prevent breakdown at least two separated vacuum zones are arranged along a moving path of the fixed contact piece. | 07-07-2011 |
20120014041 | MEDIUM VOLTAGE CIRCUIT-BREAKER FOR OUTDOOR USE - A medium voltage circuit-breaker for outdoor applications includes at least one pole part with inner electrical contacts, operated by actuator means via a jackshaft arrangement accommodated in an enclosed main housing having a mounting surface. The pole part is removably attached to the mounting surface and an elastomeric sealing ring is arranged between the end surface of the pole part and a corresponding mounting surface of the main housing. A section of the sealing ring includes a solid porosity material, for air exchange between the inside of the main housing and the environment. | 01-19-2012 |
20120152702 | SWITCH ARRANGEMENT FOR MEDIUM AND HIGH-VOLTAGE SWITCHING DEVICES - The disclosure relates to a switch arrangement for medium and high-voltage switching devices having switches, with which at least one of the contacts is a moving contact which can be actuated by an ignition charge. For a plurality of switches, a dedicated ignition device is provided for each switch, and the ignition devices are coupled together with regard to the time of the ignition. | 06-21-2012 |
20120168198 | METHOD FOR PRODUCING COMPONENTS FOR ELECTRICAL CONTACTS, AND COMPONENTS THEMSELVES - A method for producing electrical components for electrical contacts, and such a component are provided. To achieve simpler production of a partial surface treatment, which likewise exhibits optimal current carrying capacity, with minimum material use of noble metals, the entirety of the components are provided with an electrically insulating passivation layer, and the passivation is then removed chemically or mechanically at the contact points of the components. The entire components are put into an electrolytic bath, and a noble metal is deposited only on the parts of the components from which the passivation layer has been removed. | 07-05-2012 |
20120168291 | CIRCUIT BREAKER ARRANGEMENT FOR MEDIUM VOLTAGE TO HIGH VOLTAGE APPLICATIONS - Exemplary embodiments are directed to a circuit breaker arrangement for medium voltage to high voltage applications. The circuit breaker includes at least one pole part housing for accommodating a vacuum insert, within which a pair of corresponding electrical contacts is coaxially arranged. A fixed electrical contact is electrically connected to an upper terminal of the pole part housing and an axial movable electrical contact is electrically connected to a lower terminal of the pole part housing and is operated by an insulating pushrod. The insulating pushrod extends through a shielding plate arranged on a lower opening of the pole part housing. The shielding plate includes a rigid moulded plastic insulating material. At least one sealing ring has an elastic material moulded on the periphery of the shielding plate. | 07-05-2012 |
20120199451 | LOW-, MEDIUM-, OR HIGH-VOLTAGE SWITCHING DEVICE WITH CHEMICAL CHARGE MEANS - A low-, medium-, or high-voltage switching device includes a chemical charge unit for actuate closing and/or opening of electric contacts, and a fuze- or ignition cable with chemical charge material to ignite the chemical charge. In order to reach an effective galvanic separation, the chemical charge material of the fuze-cable is electrically insulating, at least in the status before ignition, and at least along a part of its length, in order to cause or effectuate a voltage potential separation between a definite low, medium or high-voltage level and an earth level. | 08-09-2012 |
20120274428 | CIRCUIT-BREAKER WITH A COMMON HOUSING - A circuit-breaker is provided for switching medium-voltage to high-voltage circuits. The circuit breaker includes a pole part having a cup-shaped housing made of insulating material for accommodating an interrupter insert operated by a drive rod. The cup-shaped housing is divided into an upper housing part in which the interrupter insert is arranged, and a lower housing part for accommodating a magnetic actuator. The drive rod of the interrupter insert is coaxially arranged to an armature of the magnetic actuator. | 11-01-2012 |
20130008765 | ELECTRICAL DEVICE WITH A MULTI-CHAMBER HOUSING - An electrical circuit-breaker device includes at least one pole part with a respective housing arrangement for encapsulating an interrupter insert having two corresponding electrical contacts, and an adjacent actuator part for mechanically moving one of the electrical contacts via an intermediate operating mechanism. A method of producing the device includes molding a multi-chamber housing by injection molding of plastic material with a first chamber and at least one further chamber, assembling the actuator part in the first chamber and the at least one respective interrupter insert in its own further chamber, and assembling the intermediate operating mechanism through an assembly opening in a common side wall between the first chamber and the at least one further chamber. | 01-10-2013 |
20130146433 | ELECTRICAL CONTACT ARRANGEMENT AND AIR INSULATED MEDIUM VOLTAGE CIRCUIT BREAKER INCLUDING THE ELECTRICAL CONTACT ARRANGEMENT - An electrical contact arrangement for medium to high voltage applications includes a contact arm having a distal end section on which a circular shaped annulus arrangement having several axially and parallel directed contact fingers is arranged. The contact fingers are pressed on the contact arm via respective radially directed connection sections by a spring ring which is peripherally arranged around the contact fingers. The distal end section of the contact arm includes a first ring-shaped surface and an adjacent second ring-shaped surface, so that the connection section of each contact finger is pressed to at least both the first and second ring-shaped surfaces. | 06-13-2013 |
20130153377 | MEDIUM VOLTAGE CIRCUIT BREAKER ARRANGEMENT OPERATED BY A TRANSMISSION MECHANISM - A circuit breaker arrangement includes at least one pole part for switching an electrical medium to high voltage circuit by a respective pair of fixed and movable electrical contacts. A pushrod of a respective movable electrical contact is operated by a common actuator unit, which is mechanically connected to each pushrod via a transmission mechanism for transferring a switching force from the actuator unit to each pushrod. The transmission mechanism includes a crankshaft having at least one crank which is pivotally attached to one end of a connection rod. An opposite end of the connection rod is pivotally attached to an end of the pushrod of a corresponding pole part. | 06-20-2013 |
20130194707 | SWITCHGEAR WITH SWITCHING DEVICE DRIVEN BY PROPELLANT CHARGE - A switchgear includes a switching device, which is driven by a propellant chemical charge or fast acting switch. The switchgear includes a current or fault current detection unit, and an optical sensor unit for light arc or fault light arc detection, without the need of having an auxiliary voltage applied. In order to reduce the closing time of an earthing switch, the electrical circuit of an inductive current detection unit is electrically connected in series with a light sensing switching path, and a current signal directly ignites the propellant chemical charge or fast acting switch by using a limited electronic device. | 08-01-2013 |
20130213939 | VACUUM INTERRUPTER FOR A CIRCUIT BREAKER ARRANGEMENT - An exemplary vacuum interrupter for a circuit breaker arrangement including a cylindrically shaped insulating part, within which a pair of electrical contact parts are coaxially arranged and surrounded concentrically by the insulating part. The electrical contact parts can be configured to initiate a disconnection arc only between corresponding inner contact elements after starting a disconnection process, and corresponding outer contact elements can be configured to commutate the arc from the inner contact elements to the outer contact elements until the disconnection process is completed, wherein each inner electrical contact element is designed as a TMF-like contact element for generating mainly a transverse magnetic field, and each outer electrical contact element is designed as an AMF-like contact element for generating mainly an axial magnetic field. | 08-22-2013 |
20130220977 | ELECTRICAL CONTACT ARRANGEMENT FOR VACUUM INTERRUPTER ARRANGEMENT - A vacuum interrupter for a circuit breaker arrangement including a cylindrically shaped insulating part, within which a pair of electrical contact parts are coaxially arranged and concentrically surrounded by the insulating part, wherein the electrical contact parts are arranged for initiating a disconnection arc only between corresponding inner contact elements after starting a disconnection process, and corresponding outer contact elements are arranged for commutating the arc from the inner contact elements to the outer contact elements until the disconnection process is completed wherein each inner electrical contact element is a TMF-like contact element for generating mainly a transverse magnetic field, and each outer electrical contact element is an AMF-like contact element for generating an axial magnetic field. | 08-29-2013 |
20130240367 | METHOD FOR PRODUCING COMPONENTS FOR ELECTRICAL CONTACTS, AND COMPONENTS THEMSELVES - A method for producing electrical components for electrical contacts, and such a component are provided. To achieve simpler production of a partial surface treatment, which likewise exhibits optimal current carrying capacity, with minimum material use of noble metals, the entirety of the components are provided with an electrically insulating passivation layer, and the passivation is then removed chemically or mechanically at the contact points of the components. The entire components are put into an electrolytic bath, and a noble metal is deposited only on the parts of the components from which the passivation layer has been removed. | 09-19-2013 |
20130264312 | METHOD OF MANUFACTURING A PUSH ROD OF A VACUUM INTERRUPTER - A method is disclosed of manufacturing a push rod for switching a vacuum interrupter by moulding the push rod with a plastic material. The push rod can include a core component configured for receiving a spring element. The push rod can also include a rod component which may include another second material, wherein a core component is embedded in the rod component to form the push rod. | 10-10-2013 |
20130284704 | VACUUM INTERRUPTER ARRANGEMENT FOR A CIRCUIT BREAKER - A vacuum interrupter arrangement for a circuit breaker includes a first cylindrical shaped vacuum insert within which a pair of corresponding electrical contacts is coaxially arranged. The electrical contacts include a fixed electrical contact which is attached to the first vacuum insert and an axially movable electrical contact which is operated by a pushrod. A second cylindrical shaped vacuum insert is coaxially arranged to the first cylindrical shaped vacuum insert. Both vacuum inserts are coaxially surrounded by an outer vacuum container in order to form a double contact gap version. | 10-31-2013 |
20140079584 | CONTACT MATERIAL FOR VACUUM INTERRUPTER, AND METHOD OF MAKING A CONTACT MATERIAL - Exemplary embodiments are directed to a contact material for a vacuum interrupter, and method of making the contact material. In achieving precise control of the Si concentration of Cu/Cr contact materials, the exemplary contact material has a chromium content which is above 10 wt. % and that the material is doped with silicon below 0.2 wt. % (2000 ppm Si) and the remainder is copper Cu. | 03-20-2014 |
20140131316 | CONTACT ASSEMBLY FOR A VACUUM CIRCUIT BREAKER - A contact assembly and a vacuum circuit breaker for interrupting an electrical current are disclosed. The contact assembly includes an outer field generating element for generating a first axial magnetic field (AMF), and an inner field generating element for generating a second AMF opposite to the first AMF. The inner field generating element can be coaxial with the outer field generating element and can have a smaller diameter than the outer field generating element. The outer field generating element can be cup-shaped and slotted with non-radial slots to generate the first AMF. The contact assembly can include an innermost conducting element for nominal current conduction and coaxially adjusted with the inner field generating element. | 05-15-2014 |
20140175058 | CIRCUIT-BREAKER POLE PART WITH A FLEXIBLE CONDUCTOR FOR CONNECTING A MOVABLE ELECTRICAL CONTACT - The disclosure relates to a pole part of a circuit-breaker arrangement having an insulation housing for accommodating a vacuum interrupter containing a pair of corresponding electrical switching contacts, wherein a fixed upper electrical contact is connected to an upper electrical terminal molded or assembled in the insulation housing and a movable lower electrical contact is connected to the insulating housing by a support plate of the insulation housing via a flexible conductor that includes a first end for attaching the flexible conductor to the lower electrical terminal and a second end for attaching the flexible conductor to the movable lower electrical contact. The second end of the flexible conductor is provided with an inside thread which is screwed to an outside thread arranged on the distal end of the movable lower electrical contact. | 06-26-2014 |
20140291293 | VACUUM CHAMBER WITH A ONE-PIECE METALLIC COVER FOR SELF-CENTERING - The disclosure relates to a vacuum chamber including at least one ceramic isolating cylinder with two face ends. At least one of the two face ends of the ceramic isolating cylinder is closed by a metallic cover including an outer and an inner part. A distal end of the outer part of the metallic cover is thinner relative to the remainder of the outer part of the metallic cover and forms a metallic lid. The metallic lid is connected to at least one of the two face ends of the ceramic isolating cylinder in a vacuum tight manner. The metallic cover can be formed in one piece and fits with the inner part of the metallic cover at an inner girthed area of the ceramic isolating cylinder to realize a self-centering of the metallic lid to at least one of the two face ends of the ceramic isolating cylinder. | 10-02-2014 |
20140301004 | LOW-, MEDIUM-, OR HIGH-VOLTAGE SWITCHGEAR - A low-, medium-, or high-voltage voltage switchgear with a circuit breaker or circuit breakers is disclosed which can switch electrical equipment. To protect the switchgear, and the cirucuit breakers in the switchgear against so called spot welding under vacuum atmosphere, such as during a closing operation of a switchgear used, for example, for switching capacitive or inductive equipment or inductive or capacitive current network an inrush current limiter is placed electrically in line or in series with the current path of the circuit breaker. | 10-09-2014 |
20140332501 | SHIELDING ELEMENT FOR THE USE IN MEDIUM VOLTAGE SWITCHGEARS - A shielding element is disclosed for use in medium voltage switchgears with vacuum interrupters with at least two contacts, which are movable along a switching path between closed and open contact positions, wherein the shielding element is positioned around the contact position region in the vacuum interrupter, wherein at least the inner surface of the shielding is applied with an implemented surface structure to form a topographic structure which is a rough or a structured surface. To enhance the energy absorbance behavior of the shielding, the implemented topographic structure can be formed such that by given constant or approximately constant volume (Vi) of the shielding body, the surface ratio of the treated surface (S2) with implemented surface structure and volume V2, and a untreated surface (S1) without topographic structure and volume V1 is greater than 1, so that this follows the condition: V1˜V2 and S2/S1>1. | 11-13-2014 |
20140339195 | VACUUM INTERRUPTER WITH TRANSITION AREAS BETWEEN METAL HOUSING PARTS AND CERAMIC HOUSING PARTS COVERED BY INSULATING MATERIAL - A vacuum interrupter is disclosed with transition areas between metal housing parts and ceramic housing parts covered by insulating material. To enhance dielectric performance and field grading behaviour, the insulating material can extend as a tube or a multilayer tube design over at least nearly a complete length of the vacuum interrupter or vacuum device arrangement. The insulating material can be filled or at least covered at an inner surface which comes into close contact with the vacuum interrupter or vacuum device surface, with metal and/or conductive metal oxides. | 11-20-2014 |
20150041179 | POLE PART FOR MEDIUM VOLTAGE USE, AND METHOD FOR MANUFACTURING THE SAME - A pole part for medium voltage use, with an insulating coverage made of duroplastic or thermoplastic material, and a method for manufacturing the pole part are provided. To enhance the manufacturing of pole parts, such that the manufactured pole part could be more easily released out of the mold, and additionally that the interface between elements made of different materials are tightly closed, in order to generate reproducible dielectric withstand performance in the manufacture, the transition area between different elements of the pole part are commonly flat in such a way that rounded edges and/or steps are avoided. | 02-12-2015 |
20150042003 | METHOD FOR INJECTION MOLDING OF THERMOPLASTIC POLE PARTS, AND MOLD FOR PRODUCING THE SAME - A method for injection molding of thermoplastic pole parts utilizes a mold to fix at least one vacuum interrupter and contact terminals during a molding process. At least one injection opening or gate for injection of thermoplastic material is formed into the mold. The mold is applied with multiple injection openings at least along its long axis, for injection of hot thermoplastic material, and the injection openings or gates can be steered in such a way that they inject thermoplastic material simultaneously or with a defined time dependent injection pattern. This process alleviates the issue of a pressure gradient along the long axis of the molded pole part, shortens process times, and achieves a homogenous dissipation of material during the molding process. | 02-12-2015 |
20150070868 | SHIELDING ELEMENT FOR USE IN MEDIUM VOLTAGE SWITCHGEARS, AND METHOD FOR MANUFACTURE THE SAME - A shielding element is provided for medium voltage switchgears with vacuum interrupters having at least two contacts, which are movable along a switching path between closed and open contact positions. The shielding element is positioned around the contact position region in the vacuum interrupter. To reduce the use of material and to optimize the energy absorbance behavior of the shielding element, the inner surface of the shielding element is applied with a topographic structure which is aligned parallel to the switching path of the contacts. The present disclosure also provides a method of manufacturing such a shielding element. | 03-12-2015 |