Huawei SUN2000-196KTL-H0 User Manual page 93

SUN2000-(196KTL-H0, 200KTL-H2, 215KTL-H0)
User Manual
Alarm Alarm Name
ID
2039 Output
Overcurrent
2040 Output DC
Component
Overhigh
2051 Abnormal
Residual
Current
Issue 02 (2020-10-30)
Alarm Cause
Severity
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.
Major Cause ID=1
The insulation impedance
of the input side to PE
decreases when the
inverter is operating.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Troubleshooting Suggestions
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 cannot be
rectified, contact your
dealer or Huawei technical
support.
1. If the exception is caused
by an external fault, the
inverter automatically
recovers after the fault is
rectified.
2. If this alarm occurs
frequently and affects the
energy yield of the PV
plant, contact your dealer
or Huawei technical
support.
1. If the alarm occurs
occasionally, the external
circuit may be abnormal
temporarily. The 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.
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