Huawei SUN2000 M0 Series User Manual page 78

SUN2000-(3KTL-10KTL)-M0
User Manual
Alarm ID Alarm
Name
2033 Grid
Undervol
tage
Issue 06 (2020-10-23)
Alarm Possible Cause
Severity
Major Cause ID = 1
The grid voltage is below
the lower threshold or the
low voltage duration has
lasted for more than the
value specified by LVRT.
Copyright © Huawei Technologies Co., Ltd.
7 Maintenance
Troubleshooting Suggestion
1. If the alarm occurs
accidentally, the power grid
may be abnormal
temporarily. The inverter
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs
frequently, check whether the
grid voltage is within the
acceptable range. If no,
contact the local power
operator. If yes, login to the
mobile phone app,
SmartLogger, or NMS to
modify the grid undervoltage
protection threshold with the
consent of the local power
operator.
3. If the fault persists, check the
connection between the AC
switch and the output power
cable.
71