Figure 2-34 Power distribution principle of the MA5608T chassis
The MPWC power interface board leads two -48 V input to the backplane, and then the
backplane supplies power to each board.
The MPWC boards supports two -48 V DC input. If one input is off, the other supplies power
to the chassis can guarantee normal running of the system.
The MPWD power interface board supports the AC input. After AC/DC conversion, the
power is supplied to the system backplane at -48 V DC.
Two MPWE boards can be configured for dual-system hot backup. Each MPWC board
supports one -48 V DC input. If one MPWE board is off, the other supplies power to the
chassis can guarantee normal running of the system.
2.6.8 Heat Dissipation
This topic describes the ventilation of the MA5608T chassis.
The MA5608T chassis has a fan tray at the left to blow air for heat dissipation.
The airflow for the MA5608T chassis is as follows: The cool air flows to the chassis through
the left side, and then the fans blow the air to the right side of the chassis through the boards.
Finally, the air exits through the right side of the chassis. Figure 2-35 shows the ventilation of
the MA5608T chassis.
Figure 2-35 Ventilation of the MA5608T chassis
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
2 Subrack and Chassis
Issue 24 (2018-07-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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