Huawei SUN2000 Series User Manual page 99

SUN2000-(196KTL-H3, 200KTL-H3, 215KTL-H3)
Seires
User Manual
Alarm Alarm Name
ID
2038 Unstable Grid
Frequency
2039 Output
Overcurrent
2040 Output DC
Component
Overhigh
Issue 03 (2021-09-30)
Alarm Cause
Severity
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.
Major Cause ID=1
The DC component of the
inverter output current
exceeds the specified
upper threshold.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Troubleshooting Suggestions
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The 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 not, 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
energy yield of the power
plant, check whether the
output is short-circuited. If
the fault cannot be
rectified, contact your
dealer or Huawei technical
support.
1. If the exception is caused
by an external fault, the
inverter automatically
recovers after the fault is
rectified.
2. If this alarm occurs
frequently and affects the
energy yield of the PV
plant, contact your dealer
or Huawei technical
support.
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