Huawei SUN2000 Series User Manual page 62

Alarm ID Alarm
Name
2032 Grid
Failure
2033 Grid
Undervolt
age
Grid
2034
Overvolta
ge
Issue 02 (2019-04-30)
Alarm Possible Cause
Severity
Major  The power grid experiences
an outage.
 The AC circuit is
disconnected or the AC
switch is off.
Major The power grid voltage is
below the lower threshold or
the undervoltage duration
exceeds the value specified by
LVRT.
The power grid voltage is
Major
beyond the upper threshold or
the overvoltage duration
exceeds the value specified by
HVRT.
Copyright © Huawei Technologies Co., Ltd.
SUN2000-(3KTL-10KTL)
Troubleshooting Suggestion
1. Check the AC voltage.
2. Check whether the AC circuit is
disconnected or whether the AC
switch is off.
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.
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 overvoltage
protection threshold with the
consent of the local power
operator.
3. Check whether the peak voltage
of the power grid is too high. If
the fault persists and cannot be
rectified for a long time, contact
the power operator.
User Manual
Page 62 of 81