Huawei SUN2000-8K-LC0 - Page 103

Alarm ID Alarm
Name
Alarm
Severity
Possible Causes Troubleshooting
2039 AC
Overcurr
ent
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.
1. The device detects its external
working conditions in real
time. After the fault is
rectied, the device
automatically recovers.
2. If the alarm occurs frequently
and aects the energy yield
of the power plant, check
whether the output is short-
circuited. If the fault persists,
contact your dealer or
technical support.
2040 DC
Compon
ent
Overhigh
Major Cause ID = 1
The DC component in the
AC current exceeds the
upper threshold.
1. The device detects its external
working conditions in real
time. After the fault is
rectied, the device
automatically recovers.
2. If the alarm occurs frequently,
contact your dealer or
technical support.
2051 Abnorma
l
Residual
Current
Major Cause ID = 1
The insulation impedance
of the input side to PE
decreases when the device
is operating.
1. If the alarm occurs
occasionally, the external
circuit may be abnormal
temporarily. The SUN2000
automatically recovers after
the fault is rectied.
2. If the alarm occurs frequently
or persists, check whether the
impedance between the PV
string and the ground is too
low.
SUN2000-(8K, 10K)-LC0 Series
User Manual 8 System Maintenance
Issue 01 (2023-09-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 96