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.
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
-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.
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
PMs.
Figure 1-39 Connections between PEMs and PMs
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