Huawei SUN2000-63KTL-JPH0 User Manual page 116

SUN2000-63KTL-JPH0
User Manual
Alarm Alarm Name
ID
2037 Grid
Underfrequency
2038 Unstable Grid
Frequency
2039 Output
Overcurrent
Issue 04 (2019-06-30)
Alarm Cause
Severity
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.
Major 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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