Huawei SUN2000-8KTL-M0 - Page 70

SUN2000-(12KTL, 15KTL, 17KTL, 20KTL)-M0
User Manual
7 Maintenance
Issue 03 (2019-07-19)
Copyright © Huawei Technologies Co., Ltd.
64
Alarm ID
Alarm
Name
Alarm
Severity
Possible Cause
Troubleshooting Suggestion
2031
Power grid
phase wire
short-circu
it to PE
Major
Cause ID = 1
The impedance of the output
phase wire is low or
short-circuited to PE.
Check the impedance of the output
phase wire to PE, locate the position
with lower impedance and restore
that.
2032
Grid
Failure
Major
Cause ID = 1

The power grid experiences
an outage.

The AC circuit is
disconnected or the AC
switch is off.
1. Check the AC voltage.
2. Check whether the AC circuit is
disconnected or whether the AC
switch is off.
2033
Grid
Undervolt
age
Major
Cause ID = 1
The power grid voltage is
below the lower threshold or
the undervoltage duration
exceeds the value specified by
LVRT.
1. If the alarm occurs occasionally,
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 grid voltage is
within the acceptable range. If no,
contact the local power operator.
If yes, log in to the mobile phone
app, SmartLogger, or NMS to
modify the grid undervoltage
protection threshold with 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
output power cable.