Ne40E-X8A Power Supply System; Overview - Huawei NE40E Hardware Description

NE40E
Hardware Description

1.8.4 NE40E-X8A Power Supply System

1.8.4.1 Overview

Introduction to Modules
As shown in Figure 1-38, the NE40E-X8A power system is located at the bottom of the
chassis. The main components are the PMs, PMUs, and switches in the front of the chassis
and the PEMs at the rear of the chassis. Table 1-37 describes the functions of each module.
Figure 1-38 Main components of the power system
Table 1-37 Functions of main components of the NE40E-X8A power system
Number
1
2
3
Issue 01 (2018-05-03)
Componen Description
t
Controls the power output of PMs. The two switches back
Switch
up each other. When one or two switches are in the ON
state, the power output of PMs is enabled.
PMU The PMU is used to manage the power module and the
power access module, monitor their working status, and
report the status to the host.
PM Converts the power supplied to the PEM and supplies
power to the entire device through the backplane.
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