Power Distribution Principle - Huawei SmartAX MA5600T Hardware Description

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Connect the ground cables properly to guarantee protection against lightening and
interference for the MA5608T. When a Huawei cabinet is installed, the service subrack is
grounded through mounting ears and therefore no separate ground cables are required. When
a third-party cabinet is installed, the separate ground cable needs to be connected to the
service subrack and ground point on the cabinet.
Ground the chassis shell securely so that the influence electricity, leakage electricity can flow
to the ground, improving the protection against electromagnetic interference.
Use a ground cable to connect the ground point of the chassis shell to the ground bar of the
telecommunications room or to the ground directly. It is recommended that the grounding
resistance of the telecommunications room should be less than 10 ohms. Refer to the local
standards to ground the chassis.
The ground point of the chassis shell is on the left of the chassis, and there is a ground point
on the front of the left mounting bracket as shown in
Figure 2-33 Grounding of the MA5608T chassis

2.6.7 Power Distribution Principle

The MA5608T chassis adopts AC and DC power supply. This topic describes the power
distribution principle of the MA5608T chassis.
The power distribution principle of the MA5608T, as shown in
NOTE
Issue 24 (2018-07-30)
NOTICE
The MA5608T chassis adopts -48 V (-38.4 V to -57.6 V)/-60 V (-38.4 V to -72 V) DC power supply and
AC power supply. The following uses the -48 V DC as an example.
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2 Subrack and Chassis
Figure 2-33.
Figure 2-34.
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