Huawei SUN2000-8K-LC0 Series User Manual page 103

SUN2000-(8K, 10K)-LC0 Series
User Manual
Alarm ID Alarm
Name
2039 AC
Overcurr
ent
2040 DC
Compon
ent
Overhigh
2051 Abnorma
l
Residual
Current
Issue 01 (2023-09-15)
Alarm Possible Causes
Severity
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 in the
AC current exceeds the
upper threshold.
Major Cause ID = 1
The insulation impedance
of the input side to PE
decreases when the device
is operating.
Copyright © Huawei Digital Power Technologies Co., Ltd.
8 System Maintenance
Troubleshooting
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 energy yield
of the power plant, check
whether the output is short-
circuited. If the fault persists,
contact your dealer or
technical support.
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,
contact your dealer or
technical support.
1. If the alarm occurs
occasionally, the external
circuit may be abnormal
temporarily. The SUN2000
automatically recovers after
the fault is rectified.
2. If the alarm occurs frequently
or persists, check whether the
impedance between the PV
string and the ground is too
low.
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