Lightning storms, while a spectacular display of nature’s power, can pose a risk to your valuable grid-connected solar system. Understanding the potential impacts and knowing the right steps to take can safeguard your investment and ensure continued energy savings.
Here’s a guide to best practices for our valued solar customers during and after a lightning storm:
During a Lightning Storm:
No direct action is typically required from your end. Your solar system is equipped with safety mechanisms, including Surge Protection Devices (SPDs), designed to handle most electrical surges.
However, be aware of potential indicators: While you may not need to physically intervene, be mindful of events like AC circuit breakers tripping in your main electrical panel. This could be a sign of a surge impacting your system.
Immediately After a Lightning Storm:
It’s crucial to take a few simple steps to ensure your solar system is still functioning correctly and that its protective measures are intact. Please perform the following checks as soon as it is safe to do so:
Check Your Inverter’s Status:
At the Inverter Unit: Look for any error messages or unusual indicators on your inverter’s display. A normally functioning inverter will typically show a green light or a display indicating power generation.
Via Remote Monitoring App (e.g., Fimer): The easiest and often most convenient way is to log in to your solar system’s remote monitoring application on your smartphone or computer. Check if the inverter is reporting normal operation and energy production. If the inverter is offline or reporting an error, it may indicate an issue.
Inspect Your AC Circuit Breakers: Locate the AC Miniature Circuit Breaker (MCB) in your main electrical panel that is dedicated to your solar system. Ensure it is in the “ON” position. If it has tripped (moved to the “OFF” position), try resetting it. If it trips again immediately, do not attempt to reset it further and contact us for assistance.
Visually Check Your SPDs: Your solar system has SPDs on both the DC (coming from the solar panels) and AC (connected to the grid) sides, usually located near the inverter or within a dedicated enclosure. Inspect these devices for any visual signs of activation. SPDs may have indicator lights, flags, or a change in color to signal that they have absorbed a surge. Remember, even if the inverter is working, a tripped SPD offers no further protection.
Inspect DC Isolators: Locate the DC isolator switches, usually positioned near the inverter and/or the solar panels. Ensure they are in their normal operating position (typically “ON”).
Important Actions to Take:
If Your Inverter is Not Functioning Normally (Step 1): Contact us immediately. A non-operational inverter means your system is not generating electricity, potentially leading to a higher electricity bill.
If You Find a Tripped AC Circuit Breaker That Keeps Tripping (Step 2): Do not repeatedly reset it. Contact us for assistance to diagnose the underlying issue.
If You Observe a Tripped SPD (Step 3): It is crucial to inform Virideo immediately. A tripped SPD means your inverter is no longer protected against future surges. Prompt notification will allow us to arrange for a timely replacement, ensuring the continued safety of your system.
Understanding Surge Protection Devices (SPDs):
Think of SPDs as safety valves for your electrical system. They are designed to sacrifice themselves by diverting excess voltage away from your sensitive inverter during a surge event. This is why they can trip or become activated.
Important Note on SPD Replacement:
Please remember that SPDs are consumable components. They are designed to protect against transient overvoltage events and, as such, are not covered under the system’s warranty. The replacement of a tripped SPD, including the cost of the device, labor, and any associated travel expenses, will be quoted for your approval before any work is carried out.
By following these best practices, you can proactively protect your solar investment and ensure its long-term performance and safety. Remember, vigilance after a lightning storm is key to maintaining the benefits of your clean energy system. If you have any concerns or notice any of the issues mentioned above, please don’t hesitate to contact our support team.
Delmar Goonetileke
Virideo Solar (Pvt) Ltd.