Huawei NetEngine40E

HUAWEI NetEngine40E Universal ServiceRouter
Hardware Description
3 NE40E-X8 Chassis Overview
Issue 01 (2012-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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Figure 3-9 Rear view of the AC rectifier module
Figure 3-8 diagrams the AC power supply system of the NE40E-X8. AC power input is
converted into regulated DC power by an AC/DC converter. The resulting DC power output is
connected to the PEMs through external cables to supply power for all boards and fan
modules.
Two -48V power inputs are joined on the board.
After the low-frequency filtering, the two -48 V power inputs for fans are joined inside the fan
module.
In Figure 3-10, each DC power input contains one -48 V power input and one RTN input. Two separated
RTN inputs are joined on the board.