Huawei SUN2000 Series User Manual page 66

SUN2000-(12KTL-25KTL)-M5 Series
User Manual
Alarm Alarm
ID Name
2034 Grid
overvolta
ge
2035 Grid volt.
Imbalanc
e
Issue 01 (2022-06-15)
Alarm Possible Causes
Severity
Major Cause ID = 1
The power grid
voltage exceeds the
upper threshold or
the high voltage
duration has lasted
for more than the
value specified by
HVRT.
Major Cause ID = 1
The difference
between power
grid phase voltages
exceeds the upper
threshold.
Copyright © Huawei Digital Power Technologies Co., Ltd.
Troubleshooting
1. If the alarm occurs occasionally, the
power grid may be abnormal
temporarily. The inverter
automatically recovers after detecting
that the power grid becomes normal.
2. If the alarm persists, check whether
the power grid frequency is within
the acceptable range. If not, contact
the local power operator. If yes,
modify the grid overfrequency
protection threshold through the app,
SmartLogger, or NMS with the
consent of the local power operator.
3. Check whether the peak voltage of
the power grid is too high. If the
alarm persists and lasts for a long
time, contact the local power
operator.
1. If the alarm occurs occasionally, the
power grid may be abnormal
temporarily. The inverter
automatically recovers after detecting
that the power grid becomes normal.
2. If the alarm persists, check whether
the power grid voltage is within the
acceptable range. If not, contact the
local power operator.
3. If the alarm lasts for a long time,
check the AC output power cable
connection.
4. If the AC output power cable is
correctly connected, yet the alarm
persists and affects the energy yield
of the PV plant, contact the local
power operator.
8 Maintenance
60