Arc Fault Circuit Interrupter for Photovoltaic Power Plant to Avoid Fire and Electric Shock Risks

Statistics show that over 80% of PV power station fires are caused by faults on the DC side—a far from trivial issue. It is precisely because of this that solutions like AFCI (Arc Fault Circuit Interrupter) and module-level shutdown have emerged in the market. However, when it comes to combining these two functions, Fonrich’s Smart Safety Protector stands out.

The Core Advantage: Integrating AFCI with Module-Level Rapid Shutdown

The key innovation of Fonrich’s device lies in directly integrating AFCI functionality into a module-level rapid shutdown unit. In other words, if an arc occurs in any single solar panel, the device can detect it immediately and cut off the power supply instantly. This step should not be underestimated: by targeting individual modules with precision, it fundamentally prevents fires caused by the high temperatures generated by arcs, truly securing the safety of distributed PV systems.

Game-Changing Communication: Self-Developed Bidirectional PLC Technology

What is even more impressive is its communication technology—Fonrich’s independently developed bidirectional PLC (Power Line Communication) technology. This technology eliminates the need for additional communication wires; instead, it uses existing PV cables to transmit data via DC power line carriers. On one hand, this boosts communication efficiency; on the other, reducing external cables not only simplifies installation but also cuts communication costs significantly. Regardless of your solar system configuration (whether installed on a rooftop or in a factory), it adapts seamlessly, offering exceptional compatibility.

A Big Boost for Operation & Maintenance (O&M)

The device also greatly improves O&M efficiency by enabling module-level data monitoring. Key parameters of every panel in the power station—including voltage, current, power, and arc status—are monitored in real time. You can keep track of the station’s operating status at any time, and the system triggers instant alerts once a fault occurs, replacing the tedious, time-consuming manual inspections of the past. Data is also visualized, making it easy for O&M teams to understand, lowering operational complexity and significantly improving efficiency.

Global Module-Level Arc Protection: Comprehensive and Reliable

Most importantly, Fonrich’s PV system solution delivers "global coverage" module-level arc protection—it can detect series arcs, parallel arcs, and ground arcs. Via Fonrich’s SafeSolar data platform, you can also view the arc intensity of each module in real time and pinpoint the exact location of faults. This has paved the way for intelligent module-level AFCI, making it far more reliable than traditional protection methods.

Frankly speaking, the technical advantages of Fonrich’s new energy safety protector directly address the core safety pain points of distributed PV. With this device, the quality of power station projects is enhanced, efficiency is maximized, and owners can achieve higher returns on investment. It is reported that Fonrich will continue to deepen research on PV safety protection systems, leveraging technological innovation to provide safety support for distributed PV power stations. Choosing such a device truly offers peace of mind.