Recent years have seen a rapid evolution in the standards on which the smart grid is being built. International instrument transformer standards include alternative designs in their scope. Rogowski coils fall within the so-called “low power passive current transformers” category.

Easy-to-use, split-core Rogowski coils are the preferred choice for many AC measurement applications. LEM’s innovative ART series achieves significant improvements in accuracy and performance while also making Rogowski coil technology very cost-competitive.