Huawei SUN2000-90KTL Series User Manual page 109

SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
Alarm Alarm Name
ID
2012 String current
backfeed
2013 Abnormal String
Power
Issue 11 (2020-08-30)
Alarm Cause
Severity
Warning 1. Only a few PV modules
are connected in series
to the PV string, and
hence the end voltage
is lower than that of
other PV strings.
2. The PV string is shaded.
Cause IDs 1 to 12
respectively correspond to
PV strings 1 to 12.
Warning 1. The PV string has been
shaded for a long time.
2. The PV string
deteriorates
abnormally.
Cause IDs 1 to 12
respectively correspond to
PV strings 1 to 12.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Measures
1. Check whether the
number of PV
modules connected in
series to this PV string
is less than the
number of PV
modules connected in
series to the other PV
strings. If yes, connect
more PV modules in
series to this PV
string.
2. Check the open-circuit
voltage of the PV
string.
3. Check that the PV
string is not shaded.
1. Check whether the
current of the
abnormal PV string is
lower than the
current of other PV
strings. If yes, check
that the abnormal PV
string is not shaded
and the actual
number of PV strings
is the same as the
configured number.
2. If the abnormal PV
string is clean and not
shaded, check
whether the PV string
is damaged.
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