Huawei SUN2000 M5 Series User Manual

Alarm
ID
Alarm
Name
Alarm
Severity
Possible Causes Troubleshooting
2038 Unstable
grid
frequency
Major Cause ID = 1
Power grid
exception: The
actual change rate
of the power grid
frequency does not
meet the
requirements for
the local power
grid code.
1. If the alarm occurs occasionally, the
power grid may be abnormal
temporarily. The inverter
automatically recovers after detecting
that the power grid becomes normal.
2. If the alarm persists, check whether
the power grid frequency is within
the acceptable range. If not, contact
the local power operator.
2039 AC
Overcurre
nt
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 protection is
triggered.
1. The inverter monitors its external
operating conditions in real time and
automatically recovers after the fault
is rectied.
2. If the alarm persists and aects the
energy yield of the PV plant, check
whether the output is short-circuited.
If the fault cannot be
rectied,
contact your dealer or Huawei
technical support.
2040 Output
DC
compone
nt
overhigh
Major Cause ID = 1
The DC component
of the inverter
output current
exceeds the upper
threshold.
1. The inverter monitors its external
operating conditions in real time and
automatically recovers after the fault
is rectied.
2. If the alarm persists and aects the
energy yield of the PV plant, 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
inverter is
operating.
1. If the alarm occurs accidentally, the
external power cable may be
abnormal temporarily. The inverter
automatically recovers after the fault
is rectied.
2. If the alarm persists or lasts a long
time, check whether the impedance
between the PV string and ground is
too low.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 8 Maintenance
Issue 03 (2023-02-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 71

Huawei SUN2000 M5 Series Specifications

General

Max Efficiency	98.6%
Max Input Voltage	1100 V
MPPT Operating Voltage Range	200 V - 1000 V
Operating Temperature Range	-25°C to +60°C
Communication	RS485, 4G (optional)