Solar PV Accesories

The specially designed DC circuit breakers for isolating PV array strings in Photovoltaic (PV) applications offer protection against over currents, short-circuits, and reverse currents. Here are some applications where these circuit breakers can be utilized:

1. Solar Power Plants: In large-scale solar power plants, multiple PV array strings are connected to a central controller or inverter. The DC circuit breakers can be installed on each string to provide individual protection. They protect against over currents and short-circuits, ensuring the safe and efficient operation of the entire PV system.

2. Commercial Rooftop Solar Systems: In commercial buildings with rooftop solar installations, multiple PV array strings are connected to the inverter. The DC circuit breakers can be installed on each string to isolate them from the inverter during maintenance or troubleshooting. This ensures the safety of maintenance personnel and prevents any reverse currents that may occur due to shading or faults.

3. Residential Solar Installations: For residential solar systems, where a single or a few PV array strings are connected to the inverter, the DC circuit breakers can provide protection against over currents and short-circuits. They offer an added layer of safety and help prevent any potential damage to the system during faults or abnormal operating conditions.

4. PV Array String Monitoring: By installing DC circuit breakers on each PV array string, it becomes easier to monitor and troubleshoot the performance of individual strings. In the event of shading or faults affecting a specific string, the circuit breaker isolates that string from the rest of the system, preventing reverse currents and aiding in identifying and resolving the issue.

5. Maintenance and Servicing: The DC circuit breakers allow for safe isolation of PV array strings during maintenance or servicing activities. They provide an efficient way to disconnect individual strings without affecting the overall system operation, ensuring the safety of personnel and equipment.

6. PV System Expansion: When expanding an existing PV system by adding new array strings, the DC circuit breakers can be installed on the new strings to provide protection and isolation. This allows for easy integration of the new strings into the existing system and ensures proper functioning and safety.

Overall, the DC circuit breakers designed for PV array string isolation find applications in a wide range of PV installations, including solar power plants, commercial rooftops, residential systems, monitoring setups, maintenance activities, and system expansion projects. They offer protection, safety, and enhanced performance by preventing over currents, short-circuits, and reverse currents in PV array strings.

TECHNICAL DATA