Gas-insulated electrical switchgear for medium and high-voltage electrical distribution networks that allows configuring different electrical diagrams and that basically consists of a first gas-insulated enclosure (1) and is equipped with at least one electrical connection means (2, 3) and at least one mechanical connection means (4), a second enclosure (11) housed inside the first enclosure (1) and an operating means (5) integrated inside a second enclosure (11) which in turn comprises a gas breaking switch, an actuating element (8) configured to actuate the operating means (5) that performs the functions of breaking, making, disconnecting and grounding, and an operating mechanism (9) to produce actuation of the actuating element (8).
The present invention refers to an electrical interconnection device (1) used in the distribution of electrical energy, including electrical transformation centers and substations. The device facilitates the interconnection of at least a first electrical element (2) and a second electrical element (3), such as a switch and a fuse, even in gas atmospheres with low dielectric properties. The device is characterized by having at least one input connection point (4, 4') and one output connection point (5, 5'), electrically interconnecting the two elements. The device (1) is housed in a part (7) made of insulating material, wherein the connection points (4, 4', 5, 5') and at least one electrical connection (8, 9) are encapsulated. The invention is intended to solve problems associated with electrical interconnection in said installations.
H01R 13/18 - Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
H01R 31/06 - Intermediate parts for linking two coupling parts, e.g. adapter
3.
GROUNDING DEVICE FOR HIGH VOLTAGE ELECTRICAL SWITCHGEAR
The grounding device (8) ensures protection against overloads and short circuits in electrical equipment and is used in electrical equipment installed in an enclosure (1) and is made up of a conductive elastic element (9) and a conductive contact (10), which are installed in the casing (4) of the protection element (3) and connected between the operating means (2) and the shunt bar (7) of the electrical circuit. During the removal of the protection element (3), the contact (10) moves towards the second electrical connection point (6) of the casing (4), which ensures that the electrical circuit between the operating means (2) and the casing (4) is grounded. When the protection element (3) is inserted, the contact (10) moves back until it comes to a stop with the first connection point (5), which guarantees that no section of the electrical circuit remains floating.
AUTOMATED THREE-POLE BASE WITH SWITCHING AND PROTECTION DEVICE FOR LOW-VOLTAGE SWITCHBOARD AND LOW-VOLTAGE SWITCHBOARD INCORPORATING SAID AUTOMATED THREE-POLE BASE
Automated three-pole base (18) with switching and protection device (1), for a low-voltage switchboard (6), wherein the device (1) comprises a circuit breaker (2) with at least two switching positions capable of breaking currents generated by overloads and short circuits as well as nominal or load currents; a protection element (7) for protection against overloads and short-circuit currents; a first actuation means (3) of the circuit breaker (2); a casing (4) containing the circuit breaker (2) and the first actuation means (3); and a disconnector (5) with at least two switching positions incorporated inside the casing (4), for isolating the low-voltage switchboard (6) from the low-voltage grid part (16) downstream from the switching and protection device (1), or connection thereto.
Gas-insulated electrical switchgear for medium and high-voltage electrical distribution networks that allows configuring different electrical diagrams and that basically consists of a first gas-insulated enclosure (1) and is equipped with at least one electrical connection means (2, 3) and at least one mechanical connection means (4), a second enclosure (11) housed inside the first enclosure (1) and an operating means (5) integrated inside a second enclosure (11) which in turn comprises a gas breaking switch, an actuating element (8) configured to actuate the operating means (5) that performs the functions of breaking, making, disconnecting and grounding, and an operating mechanism (9) to produce actuation of the actuating element (8).
Gas shut-off switch (1) provided with various operating positions and intended to be isolated in a dielectric gas inside an electrical switchgear cell (19) comprising at least one housing (2) with a pair of fixed contacts (3, 4) arranged diametrically opposed to each other and a movable contact (5) having a rotary motion to electrically connect said fixed contacts (3, 4); an arc chamber (6, 7) and an electric arc blowing means (8) jointly connected to the movable contact (5), wherein the arc chamber (6, 7) comprises a communication path (9, 10) with the exterior of the housing (2) that allows both the exit of the gases generated in the electric arc blowing and the entry of clean dielectric gas in said arc chamber (6, 7).
H01H 33/88 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
H01H 33/70 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
Switchgear for the distribution of electrical energy, comprising a number of pairs of fixed contacts (1, 1'), (2, 2'), (3, 3'); a mobile contact (4) that interconnects at least two of the fixed contacts (1, 1'), (2, 2'), (3, 3'); a number of ingoing cables (A), (B), (C), corresponding to at least one first fixed contact of each of the pairs (1), (2), (3), and at least a number of outcoming cables (D), (E), (F), corresponding to at least one second fixed contact of each of the pairs (1'), (2'), (3'). The movement of the mobile contact (4) opens or closes an electrical circuit selected from among at least one ingoing cable (A), (B), (C) and at least one outcoming cable (D), (E), (F), electrically interconnecting the first fixed contacts (1, 2, 3) with the second fixed contacts (1', 2', 3').
H01H 19/46 - Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having three operative positions, e.g. off/star/delta
The invention relates to an electrical switchgear (1) for power generation installations, specifically the type that allows interconnection to the electricity distribution grid, and which is also able to carry out the functions of protecting a low-voltage/medium-voltage transformer and connecting to medium-voltage cables of an installation comprising a casing (8) that contains, insulated in a dielectric fluid, a riser unit (2), a protection unit (3) with at least one operating means (6, 7, 20) with functions of connecting, breaking, isolating and unearthing, and a line unit (9) comprising an operating means (11) with functions of connecting, breaking, isolating and earthing.
Gas shut-off switch (1) provided with various operating positions and intended to be isolated in a dielectric gas inside an electrical switchgear cell (19) having at least one housing (2) comprising: a pair of fixed contacts (3, 4) arranged diametrically opposite one another and a movable contact (5) with rotary movement in order to connect electrically to the fixed contacts (3, 4); an arc chamber (6, 7); and an electric arc blowing means (8) solidly connected to the movable contact (5). According to the invention, the arc chamber (6, 7) comprises a communication path (9, 10) to the exterior of the housing (2), which allows both the outflow of the gases generated during electric arc blowing and the inflow of clean dielectric gas into said arc chamber (6, 7).
H01H 33/88 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
10.
Phase and zero-sequence current sensing modules mounted together on a cable bushing
A current sensing modular system, which allows sensing the phase current and/or the around-fault or zero-sequence current, having to that end at least a first module having at least one phase current sensor embedded therein and a second module having a zero-sequence current sensor embedded therein. The first module is independent of the second module, both modules being installed directly in the connection elements, i.e., in the connection point between at least one bushing and at least one connector of at least one grid cable.
The lead-in insulating device (1) of the present invention allows the passage of a live conductor (5) through a wall (18) of high-voltage electrical equipment (14), and in turn allows sensing voltage and current, for which purpose it comprises at least two electric shields (6, 7) and at least one current measurement element (12, 13), installed such that they allow detecting the presence/absence of voltage and precisely measuring the voltage and current, as well as a simple and rapid installation/removal thereof.
The invention relates to a control mechanism (1) for use in distribution equipment (100), comprising at least one switch (2) and a disconnector (3), and designed to actuate the operations of switching on and/or off and/or disconnecting and/or grounding an electric circuit, in such a way that the switch (2) is opened before the disconnector (3) during a switching off and/or disconnecting operation and the switch (2) is closed before the disconnector (3) during a switching on operation.
The present invention relates to a current sensing modular system, which allows sensing the phase current and/or the ground-fault or zero-sequence current, having to that end at least a first module (7) comprising at least one phase current sensor (5) embedded therein and a second module (8) comprising a zero-sequence current sensor (6) embedded therein. According to the invention the first module (7) is independent of the second module (8), both modules (7, 8) being installed directly in the connection elements, i.e., in the connection point between at least one bushing (2) and at least one connector (4) of at least one grid cable (3).
The lead-in insulating device (1) of the present invention allows the passage of a live conductor (5) through a wall (18) of an item of high-voltage electrical equipment (14), and in turn allows the sensing of voltage and current, for which purpose it comprises at least two electric shields (6, 7) and at least one current measurement element (12, 13), installed such that they allow the detection of the presence/absence of voltage and the precise measurement of the voltage and current, as well as the simple and rapid installation/removal thereof.
The invention allows an electrical connection to be made in an insulated, shielded manner, between the cable (3) and the electrical apparatus with a female cable gland (4) without requiring the replacement or modification of the high-voltage electrical equipment (2), only the addition of fastening elements for the adapter (1). Said adapter (1) comprises a body (6) consisting of an insulating material, provided with a first connection end (8) designed to be coupled in a tight manner into said at least one female cable gland (4) of the high-voltage electrical apparatus (2), and a second connection end (9) designed to be coupled to the female terminal (5) of the cable (3).
The invention relates to a cable testing device (6) integrated into a high-voltage electrical apparatus (3) equipped with a main circuit (17) comprising: at least a line connection (4) and a cable output (5); and at least one operating means including at least one switch (1a) and/or one isolator (1b, 1c, 1d). The testing device (6) is characterised in that it is installed as a first element upstream of the cable output (5) and simultaneously downstream of the switch (1a) and/or the isolator (1b)(1c)(1d), the testing device (6) being independent of the operation of the main circuit (17), such that the contacts of the switch (1a) and/or the isolator (1b)(1c)(1d) are maintained in the open position during cable testing, with voltage being injected for the testing of cables at the cable output (5) using the testing device (6).
The connection device (10) can be used to provide an electrical connection between two electrical apparatuses (3, 6), both of which can be insulated in a fluid or solid medium, with at least one air connection point (24) being established in said electrical connection. The device (10) comprises an elongate body (7) containing a connector (1) and a conductor (5), both of which are encapsulated. The connector (1) is plug-coupled in female bushings (2) provided for this purpose in the first apparatus (3), while the conductor (5) is connected to the second apparatus (6), with an air connection point (24) being established in the latter connection, such that the connection device (10) guarantees that an insulated, shielded electrical connection is provided between a conductor and an electrical apparatus.
A transformation centre (6) comprises high-voltage cells (1), a low-voltage panel (3) and a transformer (2) that are electrically interconnected on the top cover (5) of the transformer (2) by means of a direct shielded unipolar connection. The high-voltage electric connection (4) is implemented by a connection device (8) which, in combination with a control or protection device (10), makes it possible to protect in an integral and safe manner both persons and goods against possible defects in the transformation centre (6), limiting such defects and preventing disturbances of the high-voltage and low-voltage grid.
The invention relates to a gas circuit breaker (5), suitable for integration into a cell isolated in a dielectric gas, said circuit breaker (5) including an arc chute (1) inside which is a fixed contact (3) and a mobile contact (4). The integration of the contacts (3, 4) in at least one housing (19, 20) corresponding to the arc chute (1) enables the distances between phases to be reduced, in addition to preventing the impact of any impingement of a phase on the other phases, thus resulting in more compact electrical devices. Likewise, the circuit breaker (5) includes at least one means (6) of generating at least one gas, at least one means (7) of propelling/aspirating for at least one extinguisher gas and at least one means (2) of generating a magnetic field, such that the combination of said means (6, 7, 2) enables the electric arc generated between the contacts (3, 4) of the circuit breaker (5) to be extinguished.
H01H 33/76 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary partsSelection of material therefor
H01H 33/12 - Auxiliary contacts on to which the arc is transferred from the main contacts
H01H 33/18 - Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
H01H 33/91 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by, or in conjunction with, the contact-operating mechanism the arc-extinguishing fluid being air or gas
20.
DEVICE FOR HIGH-VOLTAGE ELECTRIC CONNECTION BETWEEN ELECTRIC DEVICES
The invention relates to a device which includes at least one insulating body (2, 3, 4) which includes a first connection element (6) configured for direct connection to a first connection means (8) of a first electric device (9), a second connection element (6') configured for direct connection to a second connection means (11) of a second electric device (10), at least one element (5) for protecting against fault currents housed inside said at least one insulating body (2, 3, 4) and conducting terminals (15,15') for the electric connection between conducting ends (13, 14) of the protective element (5) and the connection means (8, 11, 12). The insulating body (2, 3, 4) includes on the inside at least one semiconductor means (22, 23) connected to the electric potential of the protective element (5).
patents
