Huawei SUN2000-4.95KTL-JPL0 User Manual page 59

SUN2000-4.95KTL-JPL0
User Manual
Table 7-2 Common alarms and troubleshooting measures
Alarm ID Alarm
Name
2001 High
String
Input
Voltage
2011 String
Reverse
Connecti
on
2032 Grid Loss
Issue 04 (2023-02-17)
Alarm Cause
Severity
Major The PV array is not
properly configured.
Excessive PV modules are
connected in series to the
PV string, and therefore the
open-circuit voltage
exceeds the maximum
solar inverter input voltage.
The following is the
mapping between PV
strings and alarm cause
IDs:
● Cause ID 1: PV string 1
● Cause ID 2: PV string 2
Major The PV string is reversely
connected.
The following is the
mapping between PV
strings and alarm cause
IDs:
● Cause ID 1: PV string 1
● Cause ID 2: PV string 2
Major Cause ID = 1
● The power grid
experiences an outage.
● The AC circuit is
disconnected or the AC
switch is off.
Copyright © Huawei Technologies Co., Ltd.
7 System Maintenance
Suggestions
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 solar
inverter input voltage. After the
PV array configuration is
corrected, the alarm disappears.
Check whether the PV string is
reversely connected to the
inverter. If yes, wait until the PV
string current decreases below
0.5 A, set DC SWITCH to OFF,
and adjust the PV string polarity.
1. Check the AC voltage.
2. Check whether the AC circuit
is disconnected or the AC
switch is off.
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