Huawei SUN2000-75KTL Series User Manual page 126

SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual
Alarm Alarm
ID Name
2038 Unstable
Grid
Frequen
cy
2039 Output
Overcurr
ent
2040 Output
DC
Compon
ent
Overhig
h
Issue 11 (2021-11-10)
Alarm Possible Causes
Severit
y
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
Suggestions
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 Huawei 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 Huawei technical
support.
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