Huawei SUN2000-175KTL-H0 User Manual page 82

SUN2000-(175KTL-H0, 185KTL-INH0, 185KTL-H1)
User Manual
Alarm Alarm
ID Name
2035 Grid
Voltage
Imbalanc
e
2036 Grid
Overfreq
uency
2037 Grid
Underfre
quency
Issue 02 (2019-06-05)
Alarm Cause
Severit
y
Major The difference between grid phase
voltages exceeds the upper threshold.
Major Power grid exception: The actual
power grid frequency is higher than
the standard requirement for the local
power grid.
Major Power grid exception: The actual
power grid frequency is lower than the
standard requirement for the local
power grid.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Troubleshooting Suggestions
1. Check that the grid voltage is
within the normal range.
2. Check that the AC output
power cable is correctly
connected. If the AC output
power cable is correctly
connected, yet the alarm
persists and affects the energy
yield of the power plant,
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 occurs frequently,
check whether the power grid
frequency is within the
acceptable range. If not,
contact the local power
operator. If it is, modify the
power grid overfrequency
protection threshold with the
consent of 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 occurs frequently,
check whether the power grid
frequency is within the
acceptable range. If not,
contact the local power
operator. If it is, modify the
power grid underfrequency
protection threshold with the
consent of the local power
operator.
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