Abstract: A device (1) for detecting and processing signals relating to partial electrical discharges in an electrical apparatus (2) powered by a square-wave (3) voltage modulated by a modulating wave (4) in such a way as to form an alternating voltage of predetermined frequency, comprises: a sensor (5) connectable to the apparatus (2) for detecting a discharge signal (6) representing the electrical pulses generated by the partial discharges; a processing unit (7) connected to the sensor (5) to receive the discharge signal (6) and derive the detection instants of each of the pulses detected with respect to a predetermined time reference, a synchronization module (8) designed to receive an electrical signal (9) representing the power supply voltage and equipped with a filter (10) configured for extracting from said power supply signal (9) a signal (11) representing the modulating wave (4), the processing unit (7) being configured for associating with the pulses detected the values of a phase parameter (f) representing t

Abstract: A device (1) for detecting and processing signals relating to partial electrical discharges in an electrical apparatus (2) powered by a square-wave (3) voltage modulated by a modulating wave (4) in such a way as to form an alternating voltage of predetermined frequency, comprises: a sensor (5) connectable to the apparatus (2) for detecting a discharge signal (6) representing the electrical pulses generated by the partial discharges; a processing unit (7) connected to the sensor (5) to receive the discharge signal (6) and derive the detection instants of each of the pulses detected with respect to a predetermined time reference, a synchronization module (8) designed to receive an electrical signal (9) representing the power supply voltage and equipped with a filter (10) configured for extracting from said power supply signal (9) a signal (11) representing the modulating wave (4), the processing unit (7) being configured for associating with the pulses detected the values of a phase parameter (f) representing t

Abstract: A device (1) for transmitting a signal through a body (2) made of dielectric material constituting insulation for an electric apparatus comprises: a first and a second electrode (3A, 3B) connected to opposite ends of the dielectric body (2) along a longitudinal direction of transmission; a direct-current voltage generator (4), connected to the electrodes (3) for generating a direct-current electric field in the dielectric body (2) in the longitudinal direction of transmission; control means (5) connected to the generator (4) for producing at the interface between the electrodes (3) and the dielectric body (2) a predetermined charge, thus generating solitary charge waves (6) propagating from one electrode to the other at preset time intervals, the control means being configured to regulate the repetition frequency and/or the amplitude of the charge waves (6) according to the signal to be transmitted.