Huawei SUN2000-250KTL Series User Manual page 86

SUN2000-(250KTL, 280KTL, 300KTL, 330KTL) Series
User Manual
Alar Alarm
m ID Name
2032 Grid
Loss
2033 Grid
Undervo
ltage
2034 Grid
Overvolt
age
Issue 02 (2022-12-20)
Alarm Possible Cause
Severity
Major Cause ID = 1
● The power grid
experiences an outage.
● The AC circuit is
disconnected or the AC
circuit breaker is OFF.
Major Cause ID = 1
The grid voltage is below
the lower threshold or the
undervoltage duration
exceeds the time that
triggers low voltage ride-
through (LVRT).
Major Cause ID = 1
The grid voltage exceeds
the upper threshold or the
overvoltage duration
exceeds the time that
triggers high voltage ride-
through (HVRT).
Copyright © Huawei Technologies Co., Ltd.
8 System Maintenance
Suggestion
1. Check whether the AC voltage is
normal.
2. Check whether the AC circuit is
disconnected or the AC circuit
breaker is OFF.
1. If the alarm occurs occasionally,
the power grid may be abnormal
temporarily. The device
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
power grid undervoltage
protection threshold after
obtaining the consent of the local
power operator.
3. If the fault persists for a long time,
check the connection between the
AC switch and power cables.
1. If the alarm occurs occasionally,
the power grid may be abnormal
temporarily. The device
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
power grid overvoltage protection
threshold after obtaining the
consent of the local power
operator.
3. Check whether the peak voltage of
the power grid is too high. If the
fault occurs frequently and persists
for a long time, contact the local
power operator.
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