Huawei New Main Way 2.0 User Manual page 58

New Main Way 2.0
User Manual
Alarm ID Alarm Name
412177009 Input power failed
412177010 L1/L2/L3 overvoltage
-41217701
2
412177013 L1/L2/L3 undervoltage
-41217701
5
412177016 Input frequency high
412177017 Input frequency low
412177018 L1/L2/L3 overloaded
-41217702
0
412177027 Max. L1/L2/L3 current
-41217702 exceed
9
412177036 Min. L1/L2/L3 current
-41217703 exceed
8
412177045 Main input 3-phase
cur. imb.
412177052 Main input THDu high
Issue 05 (2020-10-15)
Alarm
Severity
Critical
Critical
Critical
Major
Major
Critical
Major
Major
Warning
Warning
Copyright © Huawei Technologies Co., Ltd.
Possible Causes
The L1, L2, and L3
power input voltages
are all below 20 V.
The voltage is greater
than 120% of the
rated voltage.
The voltage is below
the undervoltage
threshold.
The frequency
exceeds the threshold.
The frequency is
below the threshold.
The current exceeds
the threshold.
The current is greater
than 80% of the rated
current and less than
the rated current.
The current is greater
than 60% of the rated
current and less than
80% of the rated
current.
The three-phase (L1,
L2, and L3) current
imbalance is greater
than 15%.
The THDu on the
main circuit is 30%
higher than the rated
voltage.
7 Alarm List
Procedure
● Check the input
voltage of each
phase.
● Use the power
supply with a
normal input
voltage.
● Check the power
input.
● Use the power
supply with a
normal input
voltage.
Check the power
input.
Check the power
input.
Check the power
input.
Check the power of all
output loads.
Check the power of all
output loads.
Check the power of all
output loads.
Check all output loads
and balance the loads
of phases L1, L2, and
L3.
Check that the THDu
on the main circuit is
30% higher than the
rated voltage.
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