Study and development of a measurement set-up for high impulse currents

The understanding of high current events such as short circuit transients and impulse currents is important for the management of power quality. The work carried out and presented in this paper is focused on the characterization of commercial current transducers for on-site grade and traceable measurements of 8/20 μs (rise/fall time) impulse currents up to 60 kA peak value with a target uncertainty of 0.1 % for the complete measurement system. The investigation method consists in using two current transducers (Pearson and Rogowski coils) that will detect simultaneously the same impulse current.