Huawei SUN2000-50KTL-JPM0 - Page 99

SUN2000-(50KTL-JPM0, 50KTL-JPM1, 63KTL-JPM0)
User Manual
8 Maintenance
Issue 01 (2018-09-30)
Copyright © Huawei Technologies Co., Ltd.
93
Alarm
ID
Alarm
Name
Alarm
Severity
Cause
Measures
2012
String
Current
Backfee
d
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.
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.
2013
Abnorm
al String
Power
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.
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.
2031
Phase
Wire
Short-Ci
rcuited
to PE
Major
The impedance of the output phase
wire to PE is low or the output phase
wire is short-circuited to PE.
Check the impedance of the output
phase wire to PE, locate the
position with lower impedance,
and rectify the fault.
2032
Grid
Loss
Major
1. The power grid experiences an
outage.
2. The AC circuit is disconnected or
AC switch is off.
1. The alarm disappears
automatically after the power
grid recovers.
2. Check that the AC power cable
is connected and that the AC
switch is ON.