Patent ID: 9651580
Date: 2017-05-16
CPC Classifications: G01R,H01H,Y02E

Claim:
1. An electronic device for measuring a differential current in an electric line having a plurality of conductors, said electronic device comprising: a sensing circuit comprising: which comprises: a first signal processing block configured to process said first signal and provide a second signal indicative of said differential current; a second signal processing block configured to process said second signal and provide a first measurement signal indicative of the absolute value of a time-invariant component of said differential current; a third signal processing block configured to process said first signal and provide third and fourth signals indicative of whether said magnetic core operates in a positive or in a negative saturation region of the hysteresis loop of said magnetic core; a fourth signal processing block configured to process said third and fourth signals and provide a second measurement signal indicative of the direction of the time-invariant component of said differential current.