Huawei SUN2000-50KTL-ZHM3 User Manual page 74

SUN2000-(50KTL-ZHM3, 50KTL-M3)
User Manual
ID Name
2034 Grid
overvolt
age
2035 Grid
volt.
Imbalan
ce
Issue 03 (2022-08-30)
Severity Cause
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 Technologies Co., Ltd.
8 Maintenance
Solution
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The device
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 allowed
range. If not, contact the
local power operator. If yes,
modify the power grid
overvoltage protection
threshold after obtaining the
consent of the local power
operator.
3. Check whether the peak
voltage of the power grid is
too high. If the fault occurs
frequently and persists 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.
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