Huawei SUN2000-4.95KTL-JPL0 User Manual page 60

SUN2000-4.95KTL-JPL0
User Manual
Alarm ID Alarm
Name
2033 Grid
Undervol
tage
2034 Grid
Overvolta
ge
Issue 04 (2023-02-17)
Alarm Cause
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 LVRT.
Major Cause ID = 1
The grid voltage exceeds
the higher threshold or the
high voltage has lasted for
more than the value
specified for HVRT.
Copyright © Huawei Technologies Co., Ltd.
7 System Maintenance
Suggestions
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The solar
inverter 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, log in to the
SmartLogger, or network
management system (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. Check whether the grid
connection voltage exceeds
the upper threshold. If yes,
contact the local power
operator.
2. If you have confirmed that
the grid connection voltage
exceeds the upper threshold
and have obtained the
consent of the local power
operator, modify the
overvoltage protection
threshold.
3. Check whether the peak grid
voltage exceeds the upper
threshold.
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