Huawei SUN2000 Series User Manual page 86

SUN2000-(8KTL-20KTL)-M2
User Manual
Alarm Alarm Name
ID
2033 Grid
Undervoltage
2034 Grid
Overvoltage
Issue 01 (2020-07-02)
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.
Major Cause ID = 1
The grid voltage
exceeds the higher
threshold or the
high voltage
duration has lasted
for more than the
value specified by
HVRT.
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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.
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 power grid
voltage is within the acceptable
range. If no, contact the local
power operator. If yes, log in to
the mobile app, SmartLogger, or
network management system
(NMS) to modify the grid
overvoltage protection threshold
with the consent of the local
power operator.
3. Check whether the peak voltage
of the power grid is too high. If
the fault persists and cannot be
rectified for a long time, contact
the power grid operator.
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