Huawei SUN2000-100KTL-M2 User Manual page 120

SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual
Alarm Alarm
ID Name
2038 Unstable
Grid
Frequenc
y
2039 AC
Overcurr
ent
2040 Output
DC
Compone
nt
Overhigh
Issue 07 (2023-04-30)
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 grid experiences a dramatic
voltage drop or is short-circuited.
As a result, the transient AC
current of the device exceeds the
upper threshold and triggers
protection.
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 device detects its
external working conditions
in real time. After the fault is
rectified, the device
automatically recovers.
2. If the alarm occurs
frequently and affects the
operation of the power plant,
check whether AC short
circuit exists. If the fault
persists, 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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