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LUNA2000-200KTL-H0 Smart Power Control System
User Manual
Alarm
Alarm Name
ID
2039
AC Overcurrent
2040
DC Component
Overhigh
2051
Abnormal
Residual Current
Issue 05 (2022-06-30)
Severity
Possible Cause
Major
Cause ID = 1
The grid experiences a
dramatic voltage drop or is
short-circuited. As a result,
the transient AC current of
the device exceeds the
upper threshold and
triggers protection.
Major
Cause ID = 1
The DC component in the
AC current exceeds the
upper threshold.
Major
Cause ID = 1
The ground insulation
resistance decreases during
device operation.
Copyright © Huawei Technologies Co., Ltd.
10 Alarm Reference
Suggestion
1. The device detects its
external working
conditions in real time.
After the fault is
rectified, the device
automatically recovers.
2. If the alarm occurs
frequently and affects
the operation of the
power plant, check
whether AC short
circuit exists. If the
fault persists, contact
your dealer or technical
support.
1. The device detects its
external working
conditions in real time.
After the fault is
rectified, the device
automatically recovers.
2. If the alarm occurs
frequently, contact your
dealer or technical
support.
1. If the alarm occurs
occasionally, the
external circuit may be
abnormal temporarily.
The device will
automatically recover
after the fault is
rectified.
2. If the alarm occurs
frequently or persists,
check whether the DC-
to-ground impedance is
too low.
92
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