RISE is Sweden's NMI (National Metrology Institute) and is, according to the Swedish constitution, responsible for the central measurement quantities in the International System of Units, SI.
We provide metrological expertise at a high international level in terms of electrical power, energy and electricity quality. It can be either in the form of measurements or as calibration or testing of instruments and measurement systems. This ensures the measurement technical status of the equipment, where traceability is important.
From a metrological point of view, traceability referes to the use of instruments that are calibrated by other instruments in a chain up to international standards or realizations, where the National Laboratory makes up the highest national level. Each measurement and step in the chain involves a certain added measurement uncertainty. Estimating measurement uncertainty is therefore a constant challenge, and a separate area of expertise.
Examples of measurements and calibrations that we as a National Laboratory can provide:
Most of our metrological assignments concern AC from 16 Hz and up to 2500 Hz, currents from 5 mA up to 100 A and voltages from 50 V to 600 V. In collaboration with the National Laboratory for High Voltage and High Current, we can offer measurements of higher voltages and currents. For higher frequencies, we refer to the National Laboratory for Electrical Quantities.
We also help with consultation, training and investigations in electrical measurement technology.