High-current testing of switchgear and fuses
At a glance
High-current Test Laboratory
Testing switchgear and fuses to check their correct operation under high-current fault conditions.
To measure large current transients at mains frequency which last only a few cycles. These transients frequently have large 'DC offsets' which need to be measured accurately.
High-current measurements can be made with both flexible and rigid Rogowski coils. Special calibration techniques developed by Rocoil ensure that measuring systems are accurate. Rigid coils are calibrated with an uncertainty of 0.1% even for large currents. The integrators are designed to have very good low-frequency response so that the DC offsets can be measured correctly.