The inverter prompts that the grid voltage exceeds the limit

4 FAQs about The inverter prompts that the grid voltage exceeds the limit

What happens if AC voltage exceeds the inverter's limit?

When the AC voltage exceeds the inverter's limit it causes a shut down. Once production stops the inverter will see the grid voltage decrease, so it will attempt to restart. This will continue to happen in a cycle throughout the day. It can be seen on monitoring platforms as multiple faults every day.

What happens if the grid voltage exceeds the overvoltage and undervoltage protector?

If the grid voltage exceeds the voltage protection range of the overvoltage and undervoltage protector, the overvoltage and undervoltage protector will disconnect, cutting off the connection between the inverter and the grid, causing the inverter to report an inverter failure of grid loss.

What causes a grid overvoltage fault?

① The cable between the inverter and the grid connection point is too thin, too long, entangled, or the cable material is unqualified, causing the voltage on the AC side of the inverter to rise (ΔU increases). When the AC voltage exceeds the voltage protection range set by safety regulations, the inverter reports a grid overvoltage fault.

What causes a solar inverter to fail?

The AC voltage overrange is the most common failure of the solar inverter connected with the PV grid system. This is because the grid voltage is not constant and it will change with the changing of the load and current. At the same time, the output voltage of the inverter will be affected by the grid voltage.