Abstract: The purpose of this invention refers to a system and method of prevention against electrical discharges and/or electric arcs on individuals standing nearby an electrical installation (20). Specifically, this system comprises an actuator device (200, 200?), capable of interrupting the electrical flow of said electrical installation (20) and which is connected wirelessly with a sensor device (100) capable of wirelessly detecting electric fields emitted by the individual's body of the individual and/or by the electrical installation (20), additionally capable of indicating to the individual that the latter is at risk of suffering an electric shock and/or an electric arc.

Abstract: A wireless telemetry system is proposed based on transmission of time reference for the monitoring of static and dynamic magnitudes. The proposed system comprises a reading instrument and, at least, a transponder which, in turn, includes the transducers associated to the variables object of observation and/or measurement. With the object of communicating the reading instrument and the transponder to each other, the system also comprises a mechanism for the transmission of information regarding the internal operating frequency of the transponder towards the reading instrument and a method for the remote determination of the internal operating frequency of the transponder. The reading instrument comprises: an antenna (11000), a communication section (12000), a signal processing section (13000), a computation section (14000), a timing unit (15000) stable with temperature, a user interface section (16000) and a data output section (17000).