Huawei SUN2000 Series User Manual page 93

SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL)
User Manual
Alarm ID Alarm
Name
103 High DC
Input
Voltage
Issue 11 (2019-06-08)
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 maximum
value of the inverter MPPT
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 maximum
value of the inverter MPPT
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 maximum
value of the inverter MPPT
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 maximum
value of the inverter MPPT
voltage.
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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
input voltage. After the PV array
configuration is corrected, the
SUN2000 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
input voltage. After the PV array
configuration is corrected, the
SUN2000 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
input voltage. After the PV array
configuration is corrected, the
SUN2000 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
input voltage. After the PV array
configuration is corrected, the
SUN2000 alarm disappears.
8 Maintenance
86