1) AC power supply overvoltage: This situation means that the pleasant voltage exceeds the normal range, generally occurs when the load is light, causing the voltage to rise, or the circuit appears to fall. At this point, the electric school should be cut off to find out the reason and deal with it properly.
2) Generator overvoltage: This situation has a high probability of occurrence, mainly when the actual speed of the generator is higher than the synchronous speed. In the event of an overvoltage fault, the converter will alarm and perform an overvoltage protection action.
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