Huawei SUN2000 Series User Manual page 104

SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual
Alarm Alarm
ID Name
2038 Unstable
Grid
Frequenc
y
2039 Output
Overcurr
ent
2040 Output
DC
Compone
nt
Overhigh
Issue 02 (2022-06-30)
Alarm Possible Cause
Severity
Major Cause ID = 1
Power grid exception: The actual
grid frequency change rate does
not comply with the local power
grid standard.
Major Cause ID = 1
The power grid voltage drops
dramatically or the power grid is
short-circuited. As a result, the
solar inverter transient output
current exceeds the upper
threshold and therefore the solar
inverter protection is triggered.
Major Cause ID = 1
The DC component of the solar
inverter output current exceeds
the specified upper threshold.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Suggestion
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The solar
inverter automatically
recovers after detecting that
the power grid becomes
normal.
2. If the alarm occurs
frequently, check whether the
grid frequency is within the
acceptable range. If not,
contact the local power
operator.
1. The solar inverter detects
its external working
conditions in real time.
After the fault is rectified,
the solar inverter
automatically recovers.
2. If the alarm occurs
frequently and affects the
energy yield of the PV
plant, check whether the
output is short-circuited. If
the fault cannot be
rectified, contact your
dealer or technical
support.
1. If the exception is caused
by an external fault, the
solar inverter
automatically recovers
after the fault is rectified.
2. If the alarm occurs
frequently, contact your
dealer or technical
support.
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