Efficient Shutdown and Startup Procedures for Solar Panels
PV panels can produce electrical current even when the system is not operating; therefore, it must always be treated as live. As a result, even when a system has been shut down, parts of the system may be electrically live. Caution must be exercised while handling these systems.
Here we have outlined the best practices for shutting down and starting up solar panels, ensuring their efficient operation and maximising energy production.
01 Disconnect from the grid: Before performing any maintenance or shutdown tasks, it is crucial to disconnect the solar panel system from the electrical grid by turning off the "Solar Supply Main Switch" located on the switchboard. This ensures the safety of both the system and any personnel involved.
02 Switch off the inverter: The inverter is responsible for converting the solar panels' direct current (DC) generated into alternating current (AC) for use in homes or businesses. Turn off the "DC PV Array Isolator" next to the inverter to prevent electrical surges or malfunctions during maintenance or shutdown.
WARNING: Do not open plug and socket connectors or PV array DC isolator under no load. PV array DC isolator does not de-energise the PV array and array cabling.
01 Inspect the system: Before starting the solar panel system, visually inspect all components for any signs of damage or debris. Check for loose connections, damaged wiring, or obstructions affecting performance.
02 Reconnect the solar panels: If any panels were disconnected during maintenance or shutdown, ensure they are securely reconnected. Verify that all connections are tight and free of corrosion. Turn on the "DC PV Array Isolator" next to the inverter.
03 Switch on the inverter: Turn on the "Solar Supply Main Switch" located on the switchboard to resume the conversion of DC electricity into usable AC electricity. Allow the inverter a few minutes to stabilise before proceeding.
03 Reconnect to the grid: Once the solar panel system is up and running, reconnect it to the electrical grid. This will enable the system to export excess electricity and import power if needed.
WARNING: Do not open plug and socket connectors or PV array DC isolator under no load. PV array DC isolator does not de-energise the PV array and array cabling.
Proper shutdown and startup procedures are crucial for maintaining the efficiency and longevity of solar panel systems. By following these guidelines, users can ensure personnel safety, prevent equipment damage, and maximise energy production. Regular inspection and adherence to shut down and startup protocols will contribute to the long-term success of solar panel installations, allowing individuals and businesses to enjoy the benefits of clean and sustainable energy.
