Huawei SUN2000-2KTL-L1 User Manual page 86

SUN2000-(2KTL-5KTL)-L1
User Manual
Alarm ID Alarm
Name
2033 Grid
Undervolt
age
2034 Grid
Overvolta
ge
Issue 01 (2020-04-17)
Alarm Possible Causes
Severity
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 low voltage ride-through
(LVRT).
Major Cause ID = 1
The grid voltage exceeds the
higher threshold or the high
voltage has lasted for more
than the value specified by
high voltage ride-through
(HVRT).
Copyright © Huawei Technologies Co., Ltd.
8 System Maintenance
Troubleshooting
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 power grid
voltage is within the allowed
range. If no, contact the local
power operator. If yes, modify the
grid undervoltage protection
threshold through the mobile app,
SmartLogger, or network
management system (NMS) 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 power grid
voltage is within the allowed
range. If no, contact the local
power operator. If yes, modify the
grid overvoltage protection
threshold through the mobile app,
SmartLogger, or NMS 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.
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