Huawei SUN 2000 Series User Manual page 53

SUN2000-4.95KTL-JPL0
User Manual
Alarm ID Alarm
Name
2033 Grid
Undervolt
age
2034 Grid
Overvolta
ge
Issue 03 (2020-06-03)
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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