Huawei SUN2000-4.95KTL-JPL0 User Manual page 62

SUN2000-4.95KTL-JPL0
User Manual
Alarm ID Alarm
Name
2037 Grid
Underfre
quency
2038 Unstable
Grid
Frequenc
y
2039 Output
Overcurr
ent
Issue 04 (2023-02-17)
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
solar inverter transient
output current exceeds the
upper threshold and
therefore the solar inverter
protection is triggered.
Copyright © Huawei Technologies Co., Ltd.
7 System Maintenance
Suggestions
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The solar
inverter 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 acceptable range.
If no, contact the local power
operator. If yes, log in to the
SmartLogger, or NMS to
modify the power grid
underfrequency protection
threshold with the consent of
the local power operator.
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The solar
inverter 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 acceptable range.
If no, contact the local power
operator.
1. The solar inverter detects its
external working conditions
in real time. After the fault is
rectified, the solar inverter
automatically recovers.
2. If the alarm occurs frequently
and affects the energy yield
of the power plant, check
whether the output is short-
circuited. If the fault persists,
contact your dealer or
Huawei technical support.
56