Huawei SUN2000-50KTL-M0 User Manual page 101

SUN2000-(50KTL-M0, 70KTL-INM0)
User Manual (India Edition)
Alarm Alarm Alarm
ID Name Severity
2013 Abnorm Warning
al String
Power
2031 Phase Major
Wire
Short-Ci
rcuited
to PE
2032 Grid Major
Loss
2033 Grid Major
Undervo
ltage
Issue 03 (2019-07-30)
Cause
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.
Cause ID = 1
The impedance of the output phase
wire to PE is low or the output phase
wire is short-circuited to PE.
Cause ID = 1
1. The power grid experiences an
outage.
2. The AC circuit is disconnected or
AC switch is off.
Cause ID = 1
The grid voltage is below the lower
threshold or the low voltage duration
has lasted for more than the value
specified by LVRT.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Measures
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.
Check the impedance of the output
phase wire to PE, locate the
position with lower impedance,
and rectify the fault.
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.
1. If the alarm occurs
accidentally, the power grid
may be abnormal temporarily.
The SUN2000 automatically
recovers after detecting that the
power grid becomes normal.
2. If the alarm occurs frequently,
check whether the power grid
voltage is within the acceptable
range. If no, contact the local
power operator. If yes, modify
the power grid undervoltage
protection threshold with the
consent of the local power
operator.
3. If the fault persists for a long
time, check the AC circuit
breaker and AC output power
cable.
95