Huawei SUN2000-90KTL Series User Manual

Table 8-2 Common alarms and troubleshooting measures
Alarm
ID
Alarm Name Alarm
Severity
Cause Measures
2001 High string input
voltage
Major The PV array is incorrectly
congured. 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.
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
conguration is
corrected, the alarm
stops.
2011 String Reverse
Connection
Major The PV string is reversely
connected.
Cause IDs 1 to 12
respectively correspond to
PV strings 1 to 12.
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
o the two DC
switches and correct the
PV string connection.
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
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Issue 11 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 100

Huawei SUN2000-90KTL Series Specifications

General

Brand	Huawei
Model	SUN2000-90KTL Series
Category	Inverter
Language	English