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SUN2000-(125KTL-M5, 200KTL-H4, 250KTL-H0,
286KTL-H0)
User Manual
Alarm
Alarm
ID
Name
2031
Phase
Wire
Short-
Circuite
d to PE
2032
Grid
Failure
2033
Grid
Underv
oltage
Issue 04 (2023-09-22)
Severit
Possible Cause
y
Major
Cause ID = 1
The phase wire is short-circuited
to PE or its impedance to PE is
low.
Major
Cause ID = 1
1. The power grid experiences an
outage.
2. The AC power cable is
disconnected or the AC circuit
breaker is OFF.
Major
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.
9 Alarm Reference
Suggestion
Check the impedance of the
phase wire to PE, locate the
position with low impedance,
and rectify the fault.
1. Check whether the AC
voltage is normal.
2. Check that the AC power
cable is connected and that
the AC switch is ON.
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The device
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 allowed range. If
not, contact the local power
operator. If yes, modify the
power grid undervoltage
protection threshold after
obtaining the consent of the
local power operator.
3. If the fault persists for a
long time, check the
connection between the AC
switch and the power cable.
111
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