The energy meters may be universally used for the acquisition and billing of electrical energy in trade, household, industry and building management applications. Momentary circuit loads can be evaluated at any time using the additional instantaneous power display. Variants for direct connection (U1281, U1289) are designed for currents up to 65 A without the installation of additional current transformers. The variants for transformer connection (U1381, U1387, U1389) may be connected both to x/1 A and x/5 A current transformers.
Integrated error recognition for incorrect rotary field direction, missing phases, reverse-poled current transformers, measuring range overloads and missing bus connections saves valuable time and test equipment during troubleshooting.