Huawei NE40E Hardware Description page 138

NE40E
Hardware Description
Table 1-39 Mappings between PEMs and PMs
Name
PEM
PM

Table 1-40 Mappings between PEMs and PMs
Power
Supply
Area
A
B
Issue 01 (2018-05-03)
Location
A1/B1 A2/B2
1 2
N+N(AC/HVDC)
The NE40E-X8A supports N+N backup for PMs. The power supply system supports the
backup of power supply areas A and B on the user side. Every N power modules are
connected to one power supply area, ensuring that the entire system can work properly if
any power supply area fails.
The NE40E-X8A has two PEMs. Each PEM has four inputs. There are altogether 8
inputs (4 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 achieve a maximum of 4+4 backup.
Figure 1-40 and Table 1-40 show the mappings between PEMs and PMs.
Figure 1-40 Connections between PEMs and PMs
Name
PEM
PM
PEM
A3/B3 A4/B4 A5/B5
3 4 5
Location
A1 A2
A1 A2
B1 B2
1 Hardware Description
A6/B6 A7/B7 A8/B8
6 7 8
A3 A4
A3 A4
B3 B4
124