Huawei SUN2000-55KTL Series User Manual page 102

SUN2000-(55KTL, 60KTL) Series
User Manual
Table 8-2 Common alarms and troubleshooting measures
Alarm ID Alarm
Name
103 High DC
Input
Voltage
Issue 06 (2020-01-03)
Alarm Possible Cause
Severity
Major  Cause ID = 1
The PV array is not
properly configured.
Excessive PV modules are
connected in series to PV
strings 1 and 2, and
therefore the PV string
open-circuit voltage
exceeds the inverter
maximum operating
voltage.

Cause ID = 2
The PV array is not
properly configured.
Excessive PV modules are
connected in series to PV
strings 3 and 4, and
therefore the PV string
open-circuit voltage
exceeds the inverter
maximum operating
voltage.
 Cause ID = 3
The PV array is not
properly configured.
Excessive PV modules are
connected in series to PV
strings 5 and 6, and
therefore the PV string
open-circuit voltage
exceeds the inverter
maximum operating
voltage.

Cause ID = 4
The PV array is not
properly configured.
Excessive PV modules are
connected in series to PV
strings 7 and 8, and
therefore the PV string
open-circuit voltage
exceeds the inverter
maximum operating
voltage.
Copyright © Huawei Technologies Co., Ltd.
8 System Maintenance
Suggestion
 Cause ID = 1
Reduce the number of PV
modules connected in series to
PV strings 1 and 2 until the
open-circuit voltage is less than
or equal to the maximum inverter
operating voltage. After the PV
array configuration is corrected,
the inverter alarm disappears.

Cause ID = 2
Reduce the number of PV
modules connected in series to
PV strings 3 and 4 until the
open-circuit voltage is less than
or equal to the maximum inverter
operating voltage. After the PV
array configuration is corrected,
the inverter alarm disappears.
 Cause ID = 3
Reduce the number of PV
modules connected in series to
PV strings 5 and 6 until the
open-circuit voltage is less than
or equal to the maximum inverter
operating voltage. After the PV
array configuration is corrected,
the inverter alarm disappears.
 Cause ID = 4
Reduce the number of PV
modules connected in series to
PV strings 7 and 8 until the
open-circuit voltage is less than
or equal to the maximum inverter
operating voltage. After the PV
array configuration is corrected,
the inverter alarm disappears.
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