Patent ID: 9225285
Filing Date: 2015-12-29
Classification: H01L,H02S,Y02B,Y02E,Y02P

Abstract:
1. A photovoltaic (PV) installation at a site comprising: a PV array comprising PV panels; an electrical interface connecting a utility power source to an electrical load at the site; a DC to AC inverter; a first set of wiring electrically connecting the PV array to a switch; a second set of wiring electrically connecting the DC to AC inverter to the electrical interface; and a remote disconnect device external to the electrical interface, the DC to AC inverter, and the PV array, the remote disconnect device being located between the PV array and the DC to AC inverter, the remote disconnect device comprising the switch, the switch having a first position that electrically connects the first set of wiring to the DC to AC inverter and a second position that electrically connects at least one wiring in the first set of wiring directly to a resistor that connects the PV array to ground, the remote disconnect device being configured to sense a control signal and to disconnect the PV array from the DC to AC inverter at a level of the control signal indicative of removal of power from the electrical interface by placing the switch in the second position.