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Negative phase
In case of negative phase, the inverter does not count for running.
Grounding fault protection
If a leakage current occurs due to grounding fault, the system is stopped.
Grid fault protection
Upon the fault occurrence in the grid power, the system is stopped.
(Grid over-voltage protection, grid under-voltage protection, grid over-frequency protection, and
grid under-frequency protection)
PWM control fault
If PWM control fault occurs in the inside of the inverter, the system is stopped.
SPD indication
SPD the top indicator’s red light turns on as a warning.
