electric meter, electrical measuring device for measuring electric currents and calibration

An electrical measuring device (4) for measuring electric currents, with a measuring device housing (14) and with a connecting device (10) for connecting a measuring current transformer (6), characterized by a calibration loop (12) for calibration of from meter (4) and connected thereto measuring current transformer (6) existing measurement device (2), wherein the calibration loop (12) as part of the meter housing (14) and as an electrical conductor and is formed from the measuring current transformer (6) can be included.