Huawei SUN2000-4.95KTL-JPL0 User Manual page 63

SUN2000-4.95KTL-JPL0
User Manual
Alarm ID Alarm
Name
2040 Output
DC
Compone
nt
Overhigh
2051 Abnorma
l Residual
Current
2062 Low
Insulatio
n
Resistanc
e
Issue 04 (2023-02-17)
Alarm Cause
Severity
Major Cause ID = 1
The DC component of the
solar inverter output
current exceeds the
specified upper threshold.
Major Cause ID = 1
The insulation impedance
of the input side to PE
decreases when the solar
inverter is operating.
Major Cause ID = 1
● A short circuit occurs
between the PV array
and the ground.
● The ambient air of the
PV array is damp and
the insulation between
the PV array and the
ground is poor.
Copyright © Huawei Technologies Co., Ltd.
7 System Maintenance
Suggestions
1. The solar inverter detects its
external working conditions
in real time. After the fault is
rectified, the solar inverter
automatically recovers.
2. If the alarm occurs
frequently, contact your
dealer or Huawei technical
support.
1. If the alarm occurs
occasionally, the external
circuit may be abnormal
temporarily. The solar
inverter 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.
1. Check the output impedance
of the PV array to ground. If
there is a short circuit or lack
of insulation, rectify it.
2. Check that the PE cable of
the solar inverter is correctly
connected.
3. If you are sure that the
impedance is less than the
default value in a cloudy or
rainy environment, log in to
the app, SmartLogger, or
NMS and set Insulation
resistance protection.
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