Huawei SUN2000-111KTL-NHM0 User Manual page 122

SUN2000-111KTL-NHM0
User Manual
Alarm Alarm
ID Name
2039 AC
Overcurren
t
2040 Output DC
Componen
t Overhigh
2051 Abnormal
Residual
Current
Issue 09 (2023-12-18)
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 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.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Suggestions
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
operation of the power
plant, check whether AC
short circuit exists. If the
fault persists, contact
your dealer or technical
support.
1. If the exception is
caused by an external
fault, the solar inverter
automatically recovers
after the fault is
rectified.
2. If the alarm occurs
frequently, contact
your dealer or
technical support.
1. If an alarm is
generated, check
whether the
impedance between
PV strings and the
ground is too low, or a
PV string is short-
circuited to the ground
due to damage.
2. If the alarm occurs
frequently or persists,
check whether the
impedance between
the PV string and the
ground is too low.
114