Huawei SUN2000 Series User Manual page 81

SUN2000-(90KTL-100KTL) Series
User Manual
Alarm Alarm
ID Name
uency
Grid
2037
Underfre
quency
2038 Unstable
Grid
Frequenc
y
2039 Output
Overcurr
ent
Alarm
Cause
Severit
y
requirement of the local power grid
standard.
Power grid exception: The actual
Major
power grid frequency is lower than the
standard requirement for the local
power grid.
Major Power grid exception: The actual grid
frequency change rate does not comply
with the local power grid standard.
Major The power grid voltage drops
dramatically or the power grid is
short-circuited. As a result, the inverter
transient output current exceeds the
upper threshold and therefore the
inverter protection is triggered.
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8 Maintenance
Measures
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 grid
frequency is within the
acceptable range. If no, contact
the local power operator. If
yes, modify the power grid
overfrequency protection
threshold with the consent of
the local power operator.
1. If the alarm occurs
accidentally, 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 grid
frequency is within the
acceptable range. If no, contact
the local power operator. If
yes, modify the power grid
underfrequency protection
threshold with the consent of
the local power operator.
1. If the alarm occurs
accidentally, 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 grid
frequency is within the
acceptable range. If no, contact
the local power operator.
1. The inverter detects its
external working conditions in
real time. After the fault is
rectified, the inverter
automatically recovers.
2. If the alarm occurs frequently
and affects the power
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