Huawei NE40E Hardware Description page 137

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Hardware Description

Power Module Mappings

The NE40E-X8A supports multiple power supply scenarios, which vary in the installed PEMs

and PMs. Table 1-38 lists the mappings between power supply scenarios and PEMs/PMs.

Table 1-38 Mappings between power supply scenarios and PEMs/PMs on the NE40E-X8A

Power Supply Scenario

-48 V DC power supply

AC power supply

240 V HVDC power supply

380 V HVDC power supply

-48 V DC power supply system supports N+1 (1 indicates the number of backup modules)

PMs power module backup. The AC, 240 V HVDC, and 380 V HVDC power supply systems

supports N+N (N indicates the number of working modules)PMs power module backup. The

power supply system supports the backup of power supply areas A and B on the user side,

ensuring that the entire system can work properly if any power supply area fails.

Issue 01 (2018-05-03)

N+1(-48 V DC)

The NE40E-X8A has two PEMs. Each PEM has eight inputs. There are altogether 16

inputs (8 inputs in each of area A and area B). Each PM has two inputs. The two inputs

are from power supply areas A and B, respectively. In this manner, power supply areas A

and B back up each other. A maximum of 8 PMs can be configured based on the N+1

backup mechanism. Figure 1-39 and Table 1-39 show the mappings between PEMs and

Figure 1-39 Connections between PEMs and PMs

Connects to the external power supply system and supplies

power to the NE40E-X8A. The right and left parts of the

PEM correspond to power supply areas A and B,

respectively. Power supply areas A and B are two power

supply systems with different sources. The system connects

to different power supply systems, ensuring that the system

remains powered-on if one power supply system fails.

1 Hardware Description

2700 W AC PM

3000 W AC&HVDC PM

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