Abstract: A connecting system for a ring terminal for a baseplate of a terminal block comprises holding means for the terminal, and a clamping device configured to clamp the ring terminal once the ring terminal is held. The connecting system is configured such that the ring terminal bearing against at least one of the holding means generates a relative gap of the holding means with respect to each other, and then to move the holding means closer to each other, under the bias of a spring member when the holding means are located facing the ring of the terminal, so as to hold the ring terminal.

Abstract: A raceway for a low voltage cabinet, including a body, a bottom and an intermediate wall jointly delimiting a compartment with a permanent opening extending along one side of the raceway, and a flap hinged on the body towards the raceway on the side of the raceway in which the permanent opening is delimited, this flap being mobile so that it can be folded to face the intermediate wall or to be separated from it. The compartment is designed to hold communication cables, the intermediate wall is designed to hold power cables on its face opposite the compartment, the flap is thus designed to support modules on its face opposite the intermediate wall, each module being connected to at least one communication cable and at least one power cable.

Abstract: A device for protecting a medium or high voltage electrical network is provided, including a base part connected to means for measuring values representative of the electrical network and to a trip circuit of the electrical network, an active part that includes means for analogue-digital conversion of the values representative of the electrical network and which is mechanically and electrically connected to the base part in a first position referred to as the normal position, and a removable test part that is mechanically and electrically connected to the active part in a second position referred to as the test position. The test part includes means for mechanically and electrically connecting to the base part such that, in the test position, external terminals of the test part are connected to the trip circuit through the base part.

Abstract: A raceway for a low voltage cabinet, including a body, a bottom and an intermediate wall jointly delimiting a compartment with a permanent opening extending along one side of the raceway, and a flap hinged on the body towards the raceway on the side of the raceway in which the permanent opening is delimited, this flap being mobile so that it can be folded to face the intermediate wall or to be separated from it. The compartment is designed to hold communication cables, the intermediate wall is designed to hold power cables on its face opposite the compartment, the flap is thus designed to support modules on its face opposite the intermediate wall, each module being connected to at least one communication cable and at least one power cable.

Abstract: A connecting system for a ring terminal for a baseplate of a terminal block. The connecting system includes a holding device for the terminal, and a clamping device configured to clamp the ring terminal once the ring terminal is held. The connecting system is configured such that the ring terminal bearing against at least one of the holding devices generates a relative gap of the holding device with respect to each other, and then to move the holding device closer to each other, under the bias of a spring member when the holding device are located facing the ring of the terminal, so as to hold the ring terminal.

Abstract: A system including a base and a module to be inserted into this base, an electric relay to electrically disconnect the module from the base, and a blocking device that can change over from a blocking state to a release state. The system including a sensor to detect the presence of the module in the base and a blocking sensor to detect the state of the blocking device, and means for opening the relay as soon as the blocking device is released or as soon as the module is not present. The blocking device can leave its released state only when the module has been extracted from the base by a distance more than the detection distance of the presence sensor.

Abstract: A device for protecting a medium or high voltage electrical network is provided, including a base part connected to means for measuring values representative of the electrical network and to a trip circuit of the electrical network, an active part that includes means for analogue-digital conversion of the values representative of the electrical network and which is mechanically and electrically connected to the base part in a first position referred to as the normal position, and a removable test part that is mechanically and electrically connected to the active part in a second position referred to as the test position. The test part includes means for mechanically and electrically connecting to the base part such that, in the test position, external terminals of the test part are connected to the trip circuit through the base part.

Abstract: A system including a base and a module to be inserted into this base, an electric relay to electrically disconnect the module from the base, and a blocking device that can change over from a blocking state to a release state. The system including a sensor to detect the presence of the module in the base and a blocking sensor to detect the state of the blocking device, and means for opening the relay as soon as the blocking device is released or as soon as the module is not present. The blocking device can leave its released state only when the module has been extracted from the base by a distance more than the detection distance of the presence sensor.

Abstract: A device and method of protecting a link in a medium, high, or very high voltage power network, with current and voltage transformers and trip circuits being disposed on the link. The protection device includes a mechanism to directly connect to a power supply, to the current and voltage transformers, and to the trip circuits, via analog links, and a mechanism to convert from analog to digital that is connected to a central processor unit via a digital link, the analog-digital conversion mechanism including an integrated test plug socket function.

Abstract: A method and a differential protection apparatus for an electrical link in a medium, high or very high voltage power distribution network. This method, in which two differential protection devices are disposed at the two ends (A, B) of said link, includes a step during which a comparison is made between the current measured locally and the current measured remotely, after said devices have been resynchronized by phase shifting the data received from the end situated remotely by one half of the sum of the outward and return propagation times; and a second step during which, if an angular phase difference is found to exist between two currents after resynchronization, automatic compensation is effected by servocontrolling the angle of the current vectors.

Abstract: A protection device is to be associated in an electrical circuit (3) with a current-breaker device (20) including at least one pair (2) of contacts. The protection device includes a measuring device (1.1) for detecting a fault in the electrical circuit, at least one pair (6) of trigger contacts adapted to assume a closed or open position and to energize a coil for operating the pair (2) of contacts of the current-breaker device (20), and a control device (1.2) for commanding closing the pair (6) of trigger contacts in the event of detecting a fault, launching a time-delay and opening the pair of trigger contacts in the event of disappearance of the fault at the end of the time-delay, and barring opening pending operator intervention if the fault persists at the end of the time-delay.

Abstract: A device and method of protecting a link in a medium, high, or very high voltage power network, with current and voltage transformers and trip circuits being disposed on the link. The protection device includes a mechanism to directly connect to a power supply, to the current and voltage transformers, and to the trip circuits, via analog links, and a mechanism to convert from analog to digital that is connected to a central processor unit via a digital link, the analog-digital conversion mechanism including an integrated test plug socket function.

Abstract: A method and a differential protection apparatus for an electrical link in a medium, high or very high voltage power distribution network. This method, in which two differential protection devices are disposed at the two ends (A, B) of said link, includes a step during which a comparison is made between the current measured locally and the current measured remotely, after said devices have been resynchronized by phase shifting the data received from the end situated remotely by one half of the sum of the outward and return propagation times; and a second step during which, if an angular phase difference is found to exist between two currents after resynchronization, automatic compensation is effected by servocontrolling the angle of the current vectors.

Abstract: The invention provides a “hybrid” high voltage multiphase distribution substation having one or more sets of busbars including at least one air-insulated set of busbars (10), the substation having feeders (A, B, C, D) for air-insulated lines (21, 22) placed in substantially parallel bays (11, 12) on either side of the set(s) of busbars (10) and including metal-clad breaking and switching modules each formed by metal cladding (2) containing, for each electrical phase passing through a module, breaking and disconnection systems connected to a phase conductor (6) in an insulating gas, an end disconnection system (4A, 4B) being placed at each of the two ends (13, 14) of a module, the substation being characterized in that the feeders are opposite in facing pairs, and in that two opposite feeders (A, B) are electrically interconnected for each electrical phase via a single module (1) when the break systems (3A, 3B, 3C) and the end disconnector systems (4A, 4B) of said module are closed, said end discon

Abstract: The invention provides a “hybrid” high voltage multiphase distribution substation having one or more sets of busbars including at least one air-insulated set of busbars (10), the substation having feeders (A, B, C, D) for air-insulated lines (21, 22) placed in substantially parallel bays (11, 12) on either side of the set(s) of busbars (10) and including metal-clad breaking and switching modules each formed by metal cladding (2) containing, for each electrical phase passing through a module, breaking and disconnection systems connected to a phase conductor (6) in an insulating gas, an end disconnection system (4A, 4B) being placed at each of the two ends (13, 14) of a module, the substation being characterized in that the feeders are opposite in facing pairs, and in that two opposite feeders (A, B) are electrically interconnected for each electrical phase via a single module (1) when the break systems (3A, 3B, 3C) and the end disconnector systems (4A, 4B) of said module are closed, said end discon

Abstract: The invention relates to a method of detecting an internal arc in a metal-clad electrical link, wherein the rising edge of the internal pressure surge generated by the arc and propagating inside the cladding is detected at a fixed location along the cladding. The invention also relates to a device comprising at least one one-way detection unit constituted by a pressure sensor disposed outside the cladding and connected to the inside the cladding via a horn-shaped duct which slopes relative to the axis of the cladding, which has its mouth opening out in the cladding, and which has its tip connected to the pressure sensor.

Abstract: The hybrid high-voltage substation comprises firstly equipment implemented using metal-clad technology and constituted by at least one single or double busbar set, and secondly equipment implemented using conventional air-insulated technology so as to form feeders disposed in bays approximately perpendicular to said busbar set. The substation incorporates at least one air-insulated backup line approximately parallel to the busbar set and performing the function of backup phase to enable the substation to operate in “degraded” manner.

Abstract: The invention relates to a method of detecting an internal arc in a metal-clad electrical link, wherein the rising edge of the internal pressure surge generated by the arc and propagating inside the cladding is detected at a fixed location along the cladding. The invention also relates to a device comprising at least one one-way detection unit constituted by a pressure sensor disposed outside the cladding and connected to the inside the cladding via a horn-shaped duct which slopes relative to the axis of the cladding, which has its mouth opening out in the cladding, and which has its tip connected to the pressure sensor.

Abstract: The invention relates to a method of detecting an internal arc in a metal-clad electrical link, wherein the rising edge of the internal pressure surge generated by the arc and propagating inside the cladding is detected at a fixed location along the cladding. The invention also relates to a device comprising at least one one-way detection unit constituted by a pressure sensor disposed outside the cladding and connected to the inside the cladding via a horn-shaped duct which slopes relative to the axis of the cladding, which has its mouth opening out in the cladding, and which has its tip connected to the pressure sensor.

Abstract: A high voltage electrical disconnector that has a moving contact that moves at high speed comprises a moving first contact which is mounted to move along an axial direction relative to a fixed second contact, and which co-operates therewith to establish an electrical connection, and a rod extending along said axial direction and which is driven to move the first contact relative to the second contact. The first contact is a hollow tube in which there slides a piston mounted on the rod. A first spring is interposed between the moving contact and a first end of the piston, and a second spring is interposed between moving contact and a second end of the piston.