Patent ID: 11923671
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 6:
7. A photovoltaic (PV) rapid shutdown and arc-sensing system comprising:
an AC power supply providing an AC current;
an arc-sensing circuit having an output indicating arcing;
an AC injector transformer for coupling said AC current to a DC bus of a PV panel array, said AC injector transformer having a first winding connected to said AC power supply, a second winding connected to said DC bus, and a third winding connected to said arc sensing circuit and having a direction of turns opposite a direction of turns of said first winding;
a shutdown control input associated with one of said AC power supply and said AC injector for interrupting supply of said AC current to said DC bus, said shutdown control input being connected to said output of said arc-sensing circuit; and
at least one isolation switch device as defined in claim 1.