Huawei FusionModule800 Maintenance Manual page 12

FusionModule800 Smart Small Data Center
Maintenance Guide
Component
Issue 02 (2016-11-15)
Alarm Name Alarm
Severity
ATS Low Major
Voltage (alarm
2 on the
display)
ATS Major
Overvoltage
(alarm 3 on the
display)
ATS Open Major
Phase (alarm 4
on the display)
ATS Major
Three-Phase
Voltage
Imbalance
(alarm 5 on the
display)
ATS Incorrect Major
Phase Sequence
(alarm 6 on the
display)
Abnormal ATS Major
Frequency
(alarm 7 on the
display)
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3 Alarm References
Possible Measures
Cause
1. Switch to

The mains
the backup
voltage is
power
low.
supply.

ATS
2. Ensure that
parameters
ATS
are not set
parameters
properly.
are set
properly.
1. Switch to
 The mains
the backup
voltage is
power
high.
supply.
 ATS
2. Ensure that
parameters
ATS
are not set
parameters
properly.
are set
properly.
The input Check that the
power cable is input power
loose or not cable is
connected. properly
connected.
The mains is of Rectify the
poor quality. mains.
The phase Check that the
sequence of the input power
input power cable is
cable is properly
incorrect. connected.
The mains is of Rectify the
poor quality. mains.
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