Huawei SUN2000-250KTL Series User Manual page 99

SUN2000-(250KTL, 280KTL, 300KTL, 330KTL) Series
User Manual
Alar Alarm
m ID Name
2036 Grid
Overfreq
uency
2037 Grid
Underfre
quency
2038 Unstabl
e Grid
Frequen
cy
Issue 07 (2023-06-30)
Alarm Possible Cause
Severity
Major Cause ID = 1
Power grid exception: The
power grid frequency is
higher than the frequency
required in the local
standard.
Major Cause ID = 1
Power grid exception: The
actual power grid
frequency is lower than the
standard requirement for
the local power grid.
Major Cause ID = 1
Power grid exception: The
actual grid frequency
change rate does not
comply with the local
power grid standard.
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Suggestion
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
frequency is within the allowed
range. If not, contact the local
power operator. If yes, modify the
power grid overfrequency
protection threshold after
obtaining the consent of the local
power operator.
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
frequency is within the allowed
range. If not, contact the local
power operator. If yes, modify the
power grid underfrequency
protection threshold after
obtaining the consent of the local
power operator.
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
frequency is within the allowed
range. If not, contact the local
power operator.
9 Alarm Reference
92