Goodwe SDT Series User Manual page 61

User Manual V1.3-2024-01-25
No. Fault
Grid
7
Underfrequency
8 Anti-islanding
Cause
The frequency of the grid
is below the local grid
standard range.
The grid has been
disconnected. The grid
voltage is maintained
due to the presence of
loads. Grid connection
has been stopped based
on safety regulations and
protection requirements.
Solutions
1. If occurs occasionaly, it may
be caused a short term grid
abnormity. The inverter will recover
automatically after the grid is
normal.
2. If it occurs frequently, please check
whether the grid voltage is within
the allowed range.
• If the grid voltage exceeds the
allowed range, please contact
local power operator.
• If the grid voltage is within
the allowable range, please
modify the Grid Underfrequency
protection value with the
consent of the local power
operator.
The inverter will resume grid
reconnection after the grid to return to
normal.
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09 Maintenance