Huawei SUN2000-50KTL-M0 User Manual page 107

SUN2000-(50KTL, 60KTL, 65KTL)-M0
User Manual
Alarm Alarm Alarm
ID Name Severity
2037 Grid Major
Underfr
equenc
y
2038 Unstabl Major
e Grid
Freque
ncy
2039 Output Major
Overcu
rrent
Issue 06 (2020-07-07)
Cause
Cause ID = 1
Power grid exception: The actual
power grid frequency is lower
than the standard requirement for
the local power grid.
Cause ID = 1
Power grid exception: The actual
grid frequency change rate does
not comply with the local power
grid standard.
Cause ID = 1
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.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Measures
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 production of the PV
plant, check whether the
output is short-circuited. If
the fault persists, contact
Huawei technical support.
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