Patent ID: 11916375
Assignee: POWERSECURE INCORPORATED
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 8:
9. An electrical system, comprising:
a plurality of energy sources, each having a first node coupled to a first DC voltage rail and each having a second node coupled to a reference rail;
a fault current interruption circuit, including:
a first switch coupled between the first node and a third node;
a second switch coupled between the second node and a fourth node; and
a current sensor circuit coupled to the third node and coupled respectively to the first switch and the second switch, the current sensor circuit configured to open the first and second switches in response to sensing a magnetic field caused by a current signal between the first node and the third node that exceeds a threshold current, the opening within six microseconds of the sensing; and
a voltage inversion circuit coupled to the third node and the fourth node and configured to invert a DC voltage difference between the third node and the fourth node to an AC voltage.