Huawei SUN2000-63KTL-JPH0 User Manual page 96

SUN2000-63KTL-JPH0
User Manual
Alarm Alarm Name
ID
2001 High string input
voltage
2011 String Reverse
Connection
2012 String current
backfeed
2013 Abnormal String
Power
Issue 06 (2020-02-18)
Alarm Cause
Severity
Major The PV array is incorrectly
configured. Excessive PV
modules are connected in
series to the PV string, and
hence the PV string
open-circuit voltage exceeds
the maximum operating
voltage of the SUN2000.

Cause ID = 1 corresponds
to PV strings 1 and 2.
 Cause ID = 2 corresponds
to PV strings 3 and 4.

Cause ID = 3 corresponds
to PV strings 5 and 6.
 Cause ID = 4 corresponds
to PV strings 7 and 8.

Cause ID = 5 corresponds
to PV strings 9 and 10.
 Cause ID = 6 corresponds
to PV strings 11 and 12.
Major The PV string is reversely
connected.
Cause IDs 1 to 12 respectively
correspond to PV strings 1 to
12.
1. Only a few PV modules
Warning
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.
1. The PV string has been
Warning
shaded for a long time.
2. The PV string deteriorates
abnormally.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Measures
Reduce the number of PV
modules connected in series
to the PV string until the PV
string open-circuit voltage is
less than or equal to the
maximum operating voltage
of the SUN2000. After the
PV array configuration is
corrected, the alarm stops.
Check whether the PV string
is reversely connected to the
SUN2000. If yes, wait until
the solar irradiance declines
at night and the PV string
current reduces to below 0.5
A. Then, turn off the two
DC switches and correct the
PV string connection.
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
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