Sungrow SG250HX-IN-20, User Manual

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82
F Fa au ulltt c co od de e
D De essc crriip pttiio on n
C Ch he ec ckk m me etth ho od d
012
Excessive leakage
current
1. The fault can be caused by poor sunlight
or damp environment, and the inverter will
be reconnected to the grid after the
environment is improved.
2. If the environment is normal, check
whether the AC and DC cables are well
insulated.
3. If the fault is not caused by the foregoing
reasons and still exists, contact SUNGROW.
013
Grid abnormal, the grid
voltage or frequency is
out of the permissible
range, and the inverter
cannot be connected
to the grid normally.
Generally, the inverter will be reconnected
to the grid after the grid returns to normal. If
the fault occurs repeatedly:
1. Measure the actual grid frequency, and
contact the local electric power company
for solutions if the grid parameter exceeds
the set value.
2. If the fault is not caused by the foregoing
reasons and still exists, contact SUNGROW.
014
10-minute grid
overvoltage, the grid
voltage exceeds the
preset AC voltage of
the inverter for a long
time.
Wait for the inverter to return to normal.
If the fault occurs repeatedly, contact
SUNGROW.
015
Grid overvoltage,
The grid voltage is
higher than the set
protection value
Generally, the inverter will be reconnected
to the grid after the grid returns to normal. If
the fault occurs repeatedly:
1. Measure the actual grid voltage, and
contact the local electric power company
for solutions if the grid voltage is higher than
the set value.
2. Check whether the protection parameters
are appropriately set via the App or the LCD.
3. Check whether the cross-sectional area
of the AC cable meets the requirement.
4. If the fault is not caused by the foregoing
reasons and still exists, contact SUNGROW.
9 Troubleshooting and Maintenance User Manual