Huawei SUN600-5KTL-L0 User Manual page 75

SUN600-(5KTL, 6KTL)-L0
User Manual
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Table 8-2 Common alarms and troubleshooting measures
Alarm Alarm Name
ID
2001 High String
Input Voltage
2002 DC Arc Fault
2003 DC Arc Fault
2011 String Reversed
Issue 02 (2022-03-10)
Major: The inverter enters the shutdown mode or functions abnormally after
a fault occurs.
Minor: Some components are faulty but the inverter can still connect to the
power grid and generate power.
Warning: The inverter functions normally, but its output power decreases due
to external factors.
Alarm Possible Causes
Severity
Major The PV array is not properly
configured. Excessive PV
modules are connected in
series to the PV string, and
therefore the open-circuit
voltage exceeds the
maximum inverter
operating voltage.
Cause ID = 1, 2
● 1: The PV1 input voltage
● 2: The PV2 input voltage
Major The PV string power cables
arc or are in poor contact.
Cause ID 1 = PV1 and PV2
Cause ID 2 = PV3 and PV4
Major The PV string power cables
arc or are in poor contact.
● Cause ID 1 = PV1
● Cause ID 2 = PV2
Major The PV string is reversely
connected.
Cause ID = 1, 2
● 1: PV1 is reversely
● 2: PV2 is reversely
Copyright © Huawei Technologies Co., Ltd.
is high.
is high.
connected.
connected.
8 System Maintenance
Troubleshooting
Check the serial connection
configuration of the PV
string and ensure that the
PV string open-circuit
voltage is not greater than
the maximum operating
voltage of the inverter.
After the PV array
configuration is corrected,
the alarm disappears.
Check whether the string
cables arc or are in poor
contact.
Check whether the string
cables arc or are in poor
contact.
Check whether the PV
string is reversely
connected to the inverter. If
yes, wait until the PV string
current decreases below 0.5
A, set DC switch to OFF,
and adjust the PV string
polarity.
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