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The calibration of transient current sensors is fundamental for the reliability of high current, short-circuit tests. The test can be performed with prospective or withstand current, but in both cases, the dynamic behavior of the current sensors has to be investigated, due to his influence on the scale factor value. The requirements of the IEe 62475 standard can be achieved with a calibration in transient conditions, performed with an approved reference measuring system. In this work a most performance measuring system is presented, for the improvement of INRIM high transient current measuring capability.

The diffusion of multirotors in different fields of application comes together with a variety of critical issues. For instance, they often have to operate close to high electric and magnetic fields, like in power lines areas. In order to ensure sufficient reliability in this kind of missions, a small quadcopter has been tested by performing electromagnetic compatibility tests. The experiment was carried out inside a laboratory where a voltage up to 200 kV could be generated. Tests consist of two phases: in the first one the quadcopter was fastened to a table to prevent its premature loss or damages. In the second phase the aircraft could soar, while tethered by a cable to the ground. Results were satisfactory also for high tensions and proved that the multirotor can operate close to power line plants.