Table 1-39 Mappings between PEMs and PMs
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
Table 1-40 Mappings between PEMs and PMs
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