Goodwe GW15K-ET - Page 64

60
09 Maintenance
User Manual V1.6-2024-03-20
No. Fault Cause Solutions
3
Grid Rapid
Overvoltage
The grid voltage is
abnormal or ultra-
high.
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 voltage is within the
allowed range.
• Contact the local power company if the
grid voltage exceeds the permissible
range.
• Modify the grid overvoltage rapid
protection threshold after obtaining the
consent of the local power company
if the grid voltage is within the
permissible range.
4
Grid
Undervoltage
The grid voltage
is lower than the
permissible range,
or the duration of
low voltage exceeds
the requirement of
LVRT.
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 voltage is within the
permissible range.
• Contact the local power company if the
grid voltage exceeds the permissible
range.
• Modify the undervoltage protection
threshold, LVRT or disable the
undervoltage protection function after
obtaining the consent of the local power
company if the grid frequency is within
the permissible range.
3. Check whether the AC breaker and the
output cables are connected securely and
correctly if the problem persists.