Huawei SUN2000-4.95KTL-JPL1 - Page 86

Alarm
ID
Alarm Name Alarm
Severity
Possible Causes Troubleshooting
2039 Output
Overcurrent
Major Cause ID = 1
The power grid voltage
drops dramatically or the
power grid is short-
circuited. As a result, the
SUN2000 transient output
current exceeds the upper
threshold and therefore the
SUN2000 protection is
triggered.
1. The SUN2000 detects its
external working
conditions in real time.
After the fault is
rectied, the SUN2000
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
alarm persists, contact
your dealer or Huawei
technical support.
2040 Output DC
Component
Overhigh
Major Cause ID = 1
The DC component of the
SUN2000 output current
exceeds the specied upper
threshold.
1. The SUN2000 detects its
external working
conditions in real time.
After the fault is
rectied, the SUN2000
automatically recovers.
2. If the alarm occurs
frequently, contact your
dealer or Huawei
technical support.
2051 Abnormal
Residual
Current
Major Cause ID = 1
The insulation impedance
of the input side to PE
decreases when the
SUN2000 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.
SUN2000-4.95KTL-JPL1
User Manual 8 Maintenance
Issue 05 (2023-02-17) Copyright © Huawei Technologies Co., Ltd. 80