Device for measuring alternating or direct current.

The invention relates to a system current measurement AC or DC. This installation is of the type comprising generating means A MAGNETIC FIELD FROM THIS CURRENT, DEVICE DETECTOR (10) MAGNETIC FIELD GENERATED, a measurement circuit that determines the value of the CURRENT AND MEANS OF REDUCING THE INFLUENCE FOREIGN PRODUCED IN VALUE BY MEASURING MAGNITUDE parasitic PRESENT IN THE AREA OF MEASUREMENT. THIS INSTALLATION characterized in that said reducing means comprise a EXTERNAL INFLUENCES DETECTOR DEVICE (10) MAGNITUDE OF PARASITIC and a circuit (12) for establishing a correction signal VC measuring circuit (6) applies. The invention may be used for the measurement installations AC POWER.