Abstract: A method for device monitoring includes: providing a plurality of fleet measurement data for at least one device, where the plurality of fleet measurement data includes a number of fleet device data measurements “Nfleet;” providing a plurality of device measurement data for a monitored device, where the plurality of device measurement data includes a number of monitor device data measurements “Ndata;” determining a fleet distribution “Fdist” determined as a distribution of differences between consecutive measurements of the plurality of fleet measurement data; determining a device distribution “Ddist” determined as a distribution of differences between consecutive measurements of the device measurement data; determining an effective number of data measurements “Neff;” and determining a probability of failure of the monitored device, the determining including utilising the fleet distribution “Fdist,” the device distribution “Ddist,” the number of monitor device data measurements “Ndata,” and the effective numb

Abstract: A method for device monitoring includes: providing a plurality of fleet measurement data for at least one device, where the plurality of fleet measurement data includes a number of fleet device data measurements “Nfleet;” providing a plurality of device measurement data for a monitored device, where the plurality of device measurement data includes a number of monitor device data measurements “Ndata;” determining a fleet distribution “Fdist” determined as a distribution of differences between consecutive measurements of the plurality of fleet measurement data; determining a device distribution “Ddist” determined as a distribution of differences between consecutive measurements of the device measurement data; determining an effective number of data measurements “Neff” and determining a probability of failure of the monitored device, the determining including utilising the fleet distribution “Fdist,” the device distribution “Ddist,” the number of monitor device data measurements “Ndata,” and the effective numbe

Abstract: A method for loose joint detection in medium voltage switchgears with busbar joints, circuit breaker upper and lower spouts, and cable connection joints, arranged in an air insulated housing, and medium voltage switchgear itself, in order to create an effective loose joint detection with lower operating expense, but with high performance and accuracy, involves measuring actual temperatures at a first phase as a first temperature (T1), at a second phase as a second temperature (T2), at a third phase as a third temperature (T3), at predefined critical points, such as at the busbar joints, and/or at the circuit breaker upper spouts, and/or at the circuit breaker lower spouts, and/or the cable connection; and comparing temperatures in a logical dependency Ti>(Tj+dT), with i?j, permuted with i from 1, 2, 3, and j from 1, 2, 3, and setting the alarm if the logical dependency is fulfilled.

Abstract: An accessory device for low or medium voltage electric applications includes a casing and electronic means including one or more current sensors for detecting current flowing in an electric cable. The top shell of the casing includes an external recess having a cable seat for accommodating the electric cable in a transversal position with respect to the casing. The cable seat has a cable coupling surface adapted to mechanically couple with the electrical cable. The accessory device includes a holder element mechanically coupleable with the top shell in the external recess. The holder element includes one or more holding surfaces. Each of the holding surfaces is overlapped and mechanically coupled with the electric cable, when the holder element is positioned in the external recess in a corresponding accommodating position that is selectable depending on the size of the electric cable.

Abstract: A method is provided for determining the operating status of a spring charging motor of a LV or MV switching apparatus. The method includes acquiring a detection signal (ID) indicative of the behavior of a driving current (IMOT); processing the detection signal (ID) to calculate a steady-state detection signal (IDSS) indicative of the behavior of the driving current (IMOT) during a steady-state time interval (TSS); processing the steady-state detection signal (IDSS) to calculate data (DS) indicative of HF and LF spectral components of the driving current (IMOT); processing the data (DS) to calculate first and second harmonic distortion values (THDLF, THDHF); processing the first and second harmonic distortion values to calculate first and second output data (O1, O2), which are indicative of the variations of the first and second harmonic distortion values with respect to corresponding first and second reference values, respectively.

Abstract: The invention relates to an accessory device assembly for low or medium voltage electric applications. The accessory device includes a casing and electronic means including one or more current flowing in an electric cable. The top shell of the casing includes an external recess having a cable seat for accommodating the electric cable in a transversal position with respect to the casing. The cable seat has a cable coupling surface adapted to mechanically couple with the electrical cable. The accessory device comprises a holder element mechanically coupleable with the top shell in the external recess. The holder element includes one or more holding surfaces. Each of the holding surfaces is overlapped and mechanically coupled with the electric cable, when the holder element is positioned in the external recess in a corresponding accommodating position that is selectable depending on the size of the electric cable.

Abstract: A method for determining the operating status of a spring charging motor of a LV or MV switching apparatus.

Abstract: A method for loose joint detection in medium voltage switchgears with busbar joints, circuit breaker upper and lower spouts, and cable connection joints, arranged in an air insulated housing, and medium voltage switchgear itself, in order to create an effective loose joint detection with lower operating expense, but with high performance and accuracy, involves measuring actual temperatures at a first phase as a first temperature (T1), at a second phase as a second temperature (T2), at a third phase as a third temperature (T3), at predefined critical points, such as at the busbar joints, and/or at the circuit breaker upper spouts, and/or at the circuit breaker lower spouts, and/or the cable connection; and comparing temperatures in a logical dependency Ti>(Tj+dT), with i?j, permuted with i from 1, 2, 3, and j from 1, 2, 3, and setting the alarm if the logical dependency is fulfilled.

Abstract: A method for loose joint detection in medium voltage switchgears with busbar joints, circuit breaker upper and lower spouts, and cable connection joints, arranged in an air insulated housing, and medium voltage switchgear itself, in order to create an effective loose joint detection with lower operating expense, but with high performance and accuracy, involves measuring actual temperatures at a first phase as a first temperature (T1), at a second phase as a second temperature (T2), at a third phase as a third temperature (T3), at predefined critical points, such as at the busbar joints, and/or at the circuit breaker upper spouts, and/or at the circuit breaker lower spouts, and/or the cable connection; and comparing temperatures in a logical dependency Ti>(Tj+dT), with i?j, permuted with i from 1, 2, 3, and j from 1, 2, 3, and setting the alarm if the logical dependency is fulfilled.

Abstract: A low or medium voltage electric power distribution network comprising at least a P&C device (IED1, IEDN), and a computer station 11 which communicate with said at least a P&C device through a communication network 12. Said computer station comprises first computerized means 111 for executing, according to a batch processing mode, downloading sessions of the software package (F1, FN) to said P&C devices in order to upgrade the software of said at least a P&C device, and said at least a P&C device comprises second computerized means 115 for executing a procedure for safely managing the software upgrade in said at least a P&C device.

Abstract: A low or medium voltage electric power distribution network comprising: a plurality of P&C devices (IED1, IEDN), and a computerized station (11) which can communicate with said P&C devices through a communication network (12). Said computer station comprises first computerized means (111) for executing, according to a batch processing mode, downloading/uploading sessions of configuration/software upgrading data packages (F1, FN) to/from said P&C devices, said computerized means executing a plurality of processing threads during a downloading/uploading session of said configuration/software upgrading data packages, each of said processing threads being executed for performing the task of downloading/loading one or more configuration/software upgrading data packages to a selected P&C device in parallel and independent manner with respect to the other P&C devices.

Abstract: A low or medium voltage electric power distribution network comprising: a plurality of P&C devices (IED1, IEDN), and a computerized station (11) which can communicate with said P&C devices through a communication network (12). Said computer station comprises first computerised means (111) for executing, according to a batch processing mode, downloading/uploading sessions of configuration/software upgrading data packages (F1, FN) to/from said P&C devices, said computerised means executing a plurality of processing threads during a downloading/uploading session of said configuration/software upgrading data packages, each of said processing threads being executed for performing the task of downloading/loading one or more configuration/software upgrading data packages to a selected P&C device in parallel and independent manner with respect to the other P&C devices.

Abstract: A low or medium voltage electric power distribution network comprising at least a P&C device (IED1, IEDN), and a computer station 11 which communicate with said at least a P&C device through a communication network 12. Said computer station comprises first computerised means 111 for executing, according to a batch processing mode, downloading sessions of the software package (F1, FN) to said P&C devices in order to upgrade the software of said at least a P&C device, and said at least a P&C device comprises second computerized means 115 for executing a procedure for safely managing the software upgrade in said at least a P&C device.

Abstract: A machine is provided for trimming the fore-edge of books including at least one conveyor device having two superposed belts mounted about relative pulleys, the distance between the adjacent branches of the two belts being equal to the thickness of the books, which are fed to one end of the conveyor device with their spine parallel to its direction of movement and their fore-edge to be trimmed projecting from the belts, a trimming blade movable in a vertical plane parallel to the direction of movement of the books, and a presser and counter-presser to make contact with opposing parts of a book block which are adjacent to the cutting plane of the trimming blade. The machine further comprises two furrowers, one for each of the two faces of the books to open openable book parts before the trimming operation.

Abstract: The machine (10) is used for trimming the fore-edge of books (22) formed from a book block (24) with its spine either sewn or milled and glued, and from a flexible cover (23) the openable parts (26, 28) of which are provided with respective inwardly folded flaps (27, 29).