Nanocrystalline materials have application in all parts of the electricity network from renewable generation to the final user.
They are used to measure and control current and are installed in electrical meters and protective relaying with circuit breakers. Current transformers for electrical meters are used for both industrial and domestic applications. At industrial electric power distribution level, they facilitate safe measurement of large currents.
Nanocrystalline (3 at.% Nb) and Permalloy (80% Ni) cores provide the best characteristics for maximum accuracy.