Which of the following is a key feature of ground fault protection devices in solar PV systems?

Ground fault protection devices in solar photovoltaic (PV) systems are crucial for ensuring safety and operational integrity. The key feature of interrupting fault current signifies the device's ability to detect an unwanted current flow that could potentially lead to hazardous conditions, such as electrical shocks or fires.

When a ground fault occurs, it indicates that current is escaping to the ground due to damaged insulation or other failures. The ground fault protection device senses this anomaly and acts swiftly to interrupt the flow of fault current. This interruption prevents excessive current from damaging equipment and protects both people and property from electrocution or fire hazards that could arise from uncontained faults.

While continuous monitoring, alarm signaling, and remote control features enhance the functionality and safety of a PV system, the primary role of ground fault protection devices is centered around interrupting dangerous fault currents, making it the most critical feature for safety in such systems.