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Inverter reports overvoltage error – Causes and instructions

So what causes high voltage on DC bus? The most common cause is because the input voltage source is too high. Then measure the input voltage or check the DC bus parameter at fault

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FAQs 6

How to check if an inverter is overvoltage?

Then measure the input voltage or check the DC bus parameter at fault (you can check this parameter in the monitor parameter set of the inverter). Input overvoltage of the inverter is usually caused by a problem with the substation that increases the voltage at the inverter power supply.

Can a DC inverter overvoltage be measured?

One thing to keep in mind with the overvoltage fault is that it only happens instantaneously at a certain time. Therefore you can only monitor the DC bus voltage stored on the inverter at the time of failure, it is not possible to measure the overvoltage at this time.

What is DCI high inverter failure?

2. Inverter failure of over direct current injection (DCI High) The DC component detection circuit inside the inverter samples the AC output, filters out the AC part, and then compares the DC part with the set value (rated current × 0.5%). If the set value is exceeded, the inverter reports inverter failure of DC overweight inverter failure.

Why is my inverter NOT working?

The most common cause is because the input voltage source is too high. Then measure the input voltage or check the DC bus parameter at fault (you can check this parameter in the monitor parameter set of the inverter).

What causes an inverter to overvoltage?

Input overvoltage of the inverter is usually caused by a problem with the substation that increases the voltage at the inverter power supply. Or it could also be due to a problem with the power supply of the capacitor. Once you have verified that the input voltage is normal, refer to the second cause below.

Why does my inverter report an AC overvoltage fault?

Note: If the neutral line of the inverter is not connected or has poor contact, it may cause the inverter to report an AC overvoltage fault.

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