Patent ID: 11955836
Assignee: SOLAREDGE TECHNOLOGIES LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power device comprising:
one or more input terminals;
one or more output terminals;
an input power conversion circuit;
an output power conversion circuit;
a backup switch unit, wherein the backup switch unit comprises:
a controller,
a power relay, and
a fast switch device;

a neutral conductor, wherein the neutral conductor is electrically connected to at least one of the one or more input terminals, the one or more output terminals, the input power conversion circuit, or the output power conversion circuit, wherein the power relay is in a closed configuration on startup, wherein the fast switch device is in an open configuration on startup, and wherein the controller is configured to:
close the fast switch device responsive to a voltage difference between the neutral conductor and a ground terminal being greater than a first threshold,
open the fast switch device responsive to a voltage difference between the neutral conductor and the one or more input terminals being greater than a second threshold, and
close the fast switch device responsive to a voltage difference between the neutral conductor and the one or more input terminals being less than the second threshold.