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Starting from the basic requirements (including amplitude and frequency ranges), the design of a calibration fixture for AC and DC current sensors (with emphasis on Rogowski coils) is analyzed, focusing on its capabilities and accuracy budget. The design is reconsidered with usability and flexibility in mind, so that a wide range of physical dimensions, amplitude and frequency values are accounted...
A noninvasive current sensor for rail installation is presented, starting from the requirement definition and preliminary finite-element method (FEM) analysis. The sensor is complemented with a low-noise large-dynamic-range amplifier; the results of a thorough experimental characterization are presented and commented upon, together with a series of considerations on the suitability of an open-type...
The problem of wireless connection of voltage and current sensors installed in a high voltage and potentially dangerous environment is presented. The focus is on the definition of the requirements imposed by the sensor and measuring application and the translation of these requirements into guidelines for the wireless network topology, protocol and modulation.
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