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SUN600-(5KTL, 6KTL)-L0
User Manual
Alarm
Alarm Name
ID
2038
Unstable Grid
Frequency
2039
Output
Overcurrent
2040
Output DC
Component
Overhigh
Issue 02 (2022-03-10)
Alarm
Possible Causes
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
inverter transient output
current exceeds the upper
threshold and therefore the
inverter protection is
triggered.
Major
Cause ID = 1
The DC component of the
inverter output current
exceeds the specified upper
threshold.
Copyright © Huawei Technologies Co., Ltd.
8 System Maintenance
Troubleshooting
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
allowed range. If no,
contact the local power
operator.
1. The inverter detects its
external working
conditions in real time.
After the fault is
rectified, the inverter
automatically recovers.
2. If the alarm occurs
frequently and affects
the energy yield of the
power plant, check
whether the output is
short-circuited. If the
fault persists, contact
your dealer.
1. The inverter detects its
external working
conditions in real time.
After the fault is
rectified, the inverter
automatically recovers.
2. If the alarm occurs
frequently, contact your
dealer.
73
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