Goodwe XS Series User Manual page 49

User Manual V1.1-2023-12-30
No. Fault
Grid
7 Under-
frequency
Grid
8 Frequency
Instability
9 Anti-islanding
Cause
Utility grid exception. The
actual grid frequency is
lower than the requirement
of the local grid standard.
Utility grid exception.
The actual grid frequency
change rate does not meet
the requirement of the
local grid standard.
The utility grid is
disconnected. The utility
grid is disconnected
according to the safety
regulations, but the grid
voltage is maintained due
to the loads.
Solutions
1. If the problem occurs occasionally,
the utility grid may be abnormal
temporarily. The inverter will recover
automatically after detecting that the
utility grid is normal.
2. If the problem occurs frequently,
check whether the grid frequency is
within the permissible range.
• Contact the local power company
if the grid frequency exceeds the
permissible range.
• Modify the underfrequency
protection threshold or disable
the underfrequency protection
function after obtaining the
consent of the local power
company if the grid frequency
is within the permissible range.
Or close "Grid Underfrequency"
function.
1. If the problem occurs occasionally,
the utility grid may be abnormal
temporarily. The inverter will recover
automatically after detecting that the
utility grid is normal.
2. If the problem occurs frequently,
check whether the grid frequency is
within the permissible range.
• Contact the local power company
if the grid frequency exceeds the
permissible range.
• Contact the dealer or the after-
sales service if the grid frequency is
within the permissible range.
1. Check whether the utility grid is
disconnected.
2. Contact the dealer or the after-sales
service.
45
Maintenance