The invention relates to an electrical junction interface (10) comprising a set of junction elements for electrical cables (620, 630, 640) for transporting high-voltage electricity, which interface is intended to be plugged into an electrical cabinet (101), the interface comprising a set of insulated busbars (21, 22, 23, 31, 32, 33, 41, 42, 43) that are grouped together into three bar assemblies (20, 30, 40), the bars, which are fixed and rigid, being configured to form an electrical contact between the junction elements and the cabinet so as to facilitate the interchangeability of the electrical cabinet. According to the main feature, the junction elements (520, 530, 540, 420, 430, 440, 102) are grouped into a fixed junction box (61), second contact pads (220, 230, 240) located at the second end of the three bar assemblies (20, 30, 40) being designed to be connected to one or two junction elements each. The invention also relates to a method for connecting and disconnecting the electrical cabinet to a network of cables for transporting high-voltage and/or high-amperage electricity.
A circuit for supplying electrical power at a rated direct current of 20-100 kA to an electrolysis cell is provided. The circuit comprises an upstream and a downstream busbar connected to each other with a short-circuiting device which, when closed by an actuating mechanism, allows the busbars to be electrically connected to each other. An anode bar is equipped with an anode connection interface and a cathode connection interface, for connection to the anode and cathode, respectively. The cathode connection interface is connected to the downstream busbar. The circuit comprises means for absorbing movement of elements of the circuit due to thermal expansion. A disconnector connected to the upstream busbar and to the anode bar is opened by an actuating mechanism and it electrically disconnects the upstream busbar and the anode bar from each other after a non-zero time interval Tm when the short-circuiting device has been closed.
Electric supply circuit (20) for supplying an electrolytic cell (21) with nominal direct current between 20 kA and 100 kA, comprising an upstream collection bar (25), a downstream collection bar (26), the two upstream (25) and downstream (26) collection bars being connected together by means of a short-circuiting device (22) which, when it is closed by the action of an actuation mechanism (229), allows the two collection bars to be electrically connected to each other in order to cut off the electric supply to the cell (21), an anode bar (213) which is provided with an anode connection interface (215) which is intended to be connected to the anode (211) of the cell, and a cathode connection interface (214) which is intended to be connected to the cathode (212) of the cell. According to the main features of the invention, the cathode connection interface is connected to the downstream collection bar by means of a flexible electric connector (27), the circuit comprises means for absorbing the movement of the different elements which constitute the circuit as a result of the thermal expansions and a disconnector (23) which is connected, on the one hand, to the upstream collection bar (25) and, on the other hand, to the anode bar (213), and the disconnector is opened by the action of an actuation mechanism (239) and electrically disconnects the upstream collection bar and the anode bar from each other after a time interval Tm which is not zero after the short-circuiting device has been closed, the time period Tm corresponding to the time needed for establishing the nominal current in the short-circuiting device (22).
Electric supply circuit (20) for supplying an electrolytic cell (21) with nominal direct current between 20 kA and 100 kA, comprising an upstream collection bar (25), a downstream collection bar (26), the two upstream (25) and downstream (26) collection bars being connected together by means of a short-circuiting device (22) which, when it is closed by the action of an actuation mechanism (229), allows the two collection bars to be electrically connected to each other in order to cut off the electric supply to the cell (21), an anode bar (213) which is provided with an anode connection interface (215) which is intended to be connected to the anode (211) of the cell, and a cathode connection interface (214) which is intended to be connected to the cathode (212) of the cell. According to the main features of the invention, the cathode connection interface is connected to the downstream collection bar by means of a flexible electric connector (27), the circuit comprises means for absorbing the movement of the different elements which constitute the circuit as a result of the thermal expansions and a disconnector (23) which is connected, on the one hand, to the upstream collection bar (25) and, on the other hand, to the anode bar (213), and the disconnector is opened by the action of an actuation mechanism (239) and electrically disconnects the upstream collection bar and the anode bar from each other after a time interval Tm which is not zero after the short-circuiting device has been closed, the time period Tm corresponding to the time needed for establishing the nominal current in the short-circuiting device (22).
Contact device adapted to be inserted between two contact surfaces of two conductors of an electrical connection provided with at least one bolt, the device being formed by a metal foam plate to reduce electrical resistance of the connection. The surface area of the metal foam plate is at least equal to the surface area in contact with the two conductors, and is approximately 1 to 2 mm thick. The metal foam plate includes at least one circular opening intended to contain the bolt and at least one first pre-cut located between the opening and an outer edge of the contact device. The pre-cut is made by cutting the foam plate over a part of its thickness so that it can be easily broken along the pre-cut, the pre-cut allowing the bolt to be passed through it during the installation of the contact device.
The invention relates to a source inverter (10) for current with an intensity between 1000 A and 40,000 A comprising three phases, intended to connect an electrical load (6) to a backup electrical power source (4) in the event of the failure of the main electrical power source (2), the source inverter comprising three poles per phase each connected to a fixed contact element (51, 52, 53). According to the main feature, the source inverter comprises, per phase, at least one movable contact element (61) in order to connect two poles of the same phase together through contact with two of the three fixed contact elements, the movable contact element (61) being adapted to move between two positions, a first position, in which the movable contact element (61) connects the electrical load (6) to the main electrical power source (2), and a second position, in which the movable contact element (61) connects the electrical load (6) to the backup electrical power source (6), the movable element (61) comprising two parallel flat conductors (612 and 614), in which a current circulates in the same direction when the source inverter is powered up so that an electrodynamic attraction effect mutually exists in the two flat conductors.
H01H 31/28 - Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H01H 1/50 - Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
H01H 1/60 - Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces
7.
CONTACT DEVICE ADAPTED TO FACILITATE THE REPAIR OF BOLTED ELECTRICAL CONNECTIONS
Contact device (10, 20, 30, 40, 50) adapted to be inserted between the two contact surfaces of two conductors (32 and 34) of an electrical connection provided with at least one bolt (37, 38, 39), the device being formed by a metal foam plate (11) in order to reduce the electrical resistance of the connection. According to the main features of the invention: - the surface of the metal foam plate is at least equal to the surface in contact with the two conductors, with its thickness being approximately 1 to 2 mm; - and the metal foam plate comprises at least one circular opening (12) intended to contain the bolt and at least one first pre-cut (18, 28) located between the opening and an outer edge of the contact device, the pre-cut being produced by cutting part of the thickness of the foam plate so that it can be easily broken along the pre-cut, the pre-cut allowing passage of the bolt during the installation of the contact device.
Contact device (10, 20, 30, 40, 50) adapted to be inserted between the two contact surfaces of two conductors (32 and 34) of an electrical connection provided with at least one bolt (37, 38, 39), the device being formed by a metal foam plate (11) in order to reduce the electrical resistance of the connection. According to the main features of the invention: - the surface of the metal foam plate is at least equal to the surface in contact with the two conductors, with its thickness being approximately 1 to 2 mm; - and the metal foam plate comprises at least one circular opening (12) intended to contain the bolt and at least one first pre-cut (18, 28) located between the opening and an outer edge of the contact device, the pre-cut being produced by cutting part of the thickness of the foam plate so that it can be easily broken along the pre-cut, the pre-cut allowing passage of the bolt during the installation of the contact device.
An electrical connection powder comprising particles obtained by pulverizing a skeleton of open cell metal foam chosen from the group consisting of iron, cobalt, nickel and the alloys of same covered with at least one coating of tin or indium or one of the alloys of same. The paste is formed from this powder dispersed in a binder such as grease. The powder or paste is particularity useful for improving the conductivity of an electrical connection consisting of a terminal (20) linked to a cable (24) consisting of a plurality of strands (30, 32, 34) by means of a crimping ring (26).
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of metals or alloys
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
H01B 1/16 - Conductive material dispersed in non-conductive inorganic material the conductive material comprising metals or alloys
H01R 13/03 - Contact members characterised by the material, e.g. plating or coating materials
H01R 4/30 - Clamped connectionsSpring connections using a screw or nut clamping member
H01R 4/20 - Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one anotherMeans for effecting or maintaining such contactElectrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
11.
Electrical connection device having improved conductance
An electrical connection device, including two conductors (12 and 14), in which at least one of the two conductors is made of aluminum, each conductor has a contact surface, and a conductive element (1) is inserted between the contact surfaces of the conductors. The inserted conductive part has a foam skeleton having open cells of a metal selected from the group consisting of iron, nickel, and the alloys thereof, directly covered with at least one coating of copper, tin, indium or one of the alloys thereof.
H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
H01R 4/30 - Clamped connectionsSpring connections using a screw or nut clamping member
H01R 4/62 - Connections between conductors of different materialsConnections between or with aluminium or steel-core aluminium conductors
H01R 13/03 - Contact members characterised by the material, e.g. plating or coating materials
H01R 43/26 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
H01R 11/12 - End pieces terminating in an eye, hook, or fork
12.
ELECTRICAL CONNECTION DEVICE HAVING IMPROVED CONDUCTANCE
The invention relates to an electrical connection device, including two conductors (12 and 14), wherein in particular at least one of the two conductors is made of aluminium, each conductor has a contact surface, and a conductive element (10) is inserted between the contact surfaces of the conductors. The inserted conductive part consists of a foam skeleton comprising open cells of a metal selected from the group consisting of iron, cobalt, nickel, and the alloys thereof, directly covered with at least one coating of copper, tin, indium or one of the alloys thereof.
The invention relates to an electrical connection device, including two conductors (12 and 14), wherein in particular at least one of the two conductors is made of aluminium, each conductor has a contact surface, and a conductive element (10) is inserted between the contact surfaces of the conductors. The inserted conductive part consists of a foam skeleton comprising open cells of a metal selected from the group consisting of iron, cobalt, nickel, and the alloys thereof, directly covered with at least one coating of copper, tin, indium or one of the alloys thereof.
