HUAWEI NetEngine40E Universal ServiceRouter
Hardware Description
3 NE40E-X8 Chassis Overview
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1.6 Tbit/s (bidirectional)
3.2 Power Supply System
This chapter describes the power supply system of the NE40E-X8.
3.2.1 Architecture of the Power Supply System
This section describes the features of the power supply system.
The NE40E-X8 supports either DC or AC power supply.
In the case of a DC power supply system, four 70 A Power Entry Modules (PEMs) are
inserted at the rear of the chassis, working in 2+2 backup mode.
In the case of an AC power supply system, an AC power frame is placed outside the chassis
and installed with rectifier modules based on system power. The AC power frame is then
connected to the input terminals on the DC-PEMs to supply power for the system. (In short,
an external AC power frame is added to the DC power supply system to constitute an AC
power supply system.)
3.2.2 Distributed Architecture of the System
This section describes partitioned power supply on the NE40E-X8.
As shown in Figure 3-5, the NE40E-X8 backplane is divided into two areas, with each area
having two power inputs. These four power inputs work in backup mode.
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