Huawei SUN2000 Series User Manual page 74

SUN2000-(3KTL-10KTL)-M0
User Manual
Alarm ID Alarm
Name
2034 Grid
Overvolta
ge
Grid
2035
Voltage
Imbalance
Issue 04 (2019-10-18)
Alarm Possible Cause
Severity
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.
Major Cause ID = 1
The difference between grid
phase voltages exceeds the
upper threshold.
Copyright © Huawei Technologies Co., Ltd.
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 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.
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.
3. If the fault persists for a long
time, check the connection of the
AC output power cables.
4. If the AC output power cables are
correctly connected, but the alarm
persists and affects the energy
yield of the PV plant, contact the
local power operator.
7 Maintenance
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