Ac And Dc Power Distribution - Huawei MTS9300A User Manual

MTS9300A Telecom Power (Ooredoo, Indonesia,
MTS9304A-HD2002)
User Manual
No.
4
5

4.1.2 AC and DC Power Distribution

Table 4-2 AC and DC power distribution maintenance
No.
3
4
5
Issue 06 (2021-10-13)
Maintenance Item
Check whether the
front and rear of
rectifiers are blocked
or dusty.
Whether there are
traces of animals such
as insects, mice, and
snakes inside the
cabinet
Maintenance Item
Check for AC input
undervoltage.
Check for AC input
overvoltage.
Check whether the AC
input voltage is open-
phase.
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If...
The front or rear of
rectifiers is blocked or
dusty.
Animals entered the
cabinet.
If...
● AC input power
cables have a large
voltage drop.
● AC input power
cables are in poor
contact.
● The mains voltage
is too low.
The mains voltage is
too high.
● AC input power
cables are in poor
contact, short-
circuited, or
damaged.
● The mains supply
has failed.
4 Maintenance
Then...
Remove the blockage
or clean up the dust.
1. Clear the traces and
take precautions
during clearance to
prevent secretions
of animals from
entering monitoring
boards or energized
components.
2. Seal the cable holes
to prevent animals
from entering the
cabinet again.
Then...
1. Replace AC input
power cables with
shorter or thicker
cables.
2. Connect AC input
power cables
securely.
3. Provide the voltage
data to the power
supplier.
Provide the voltage
data to the power
supplier.
1. Check and rectify
the cables.
2. Provide the open-
phase data to the
power supplier.
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