Huawei SUN2000-75KTL Series User Manual page 122

SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual
Alarm Alarm
ID Name
2014 High
Input
String
Voltage
to
Ground
2015 PV
String
Loss
Issue 11 (2021-11-10)
Alarm Possible Causes
Severit
y
Major Cause ID = 1
The voltage between the input PV
string and the ground is
abnormal, and there is a risk of
power attenuation.
Warnin Cause ID = 1–20
g
This alarm is generated when the
PV string status is abnormal due
to the following conditions: a
single PV string is lost; both 2-
in-1 PV strings are lost; one of the
2-in-1 PV strings is lost.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Suggestions
1. If no PID compensation
device exists in the system,
disable the PID protection
function at night. Note: If
the PID protection function
is disabled but reactive
power compensation at
night is enabled, PV
modules may attenuate.
2. If there is a PID
compensation device in the
system, check whether it is
faulty. If yes, rectify the
fault.
3. Check whether the settings
of compensation direction
for the solar inverter and
the PID device are
consistent. If not, set them
to be consistent based on
the PV module model.
(Note: If the PV– is set to
positive offset, the voltage
between the solar inverter
PV– and the ground should
be greater than 0 V to
clear the alarms; if the PV+
is set to negative offset,
the voltage between the
solar inverter PV+ and the
ground should be less than
0 V to clear the alarms.)
4. If the alarm persists,
contact Huawei technical
support.
1. Check whether the solar
inverter terminals are
properly connected.
2. Check whether the PV
string terminals are
properly connected.
3. If a 2-in-1 terminal is used,
check whether it is normal.
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