Switch - Huawei NE40E Hardware Description

NE40E
Hardware Description
Input upstream requirements

Note the derating requirements of protection components when using protection components
such as fuses and circuit breakers.


1.8.6.9 Switch

The switch controls the power output of PMs. The two switches back up each other. When
one or two switches are in the ON state, the power output of PMs is enabled.
Appearance
Figure 1-72 shows the appearance of the switch.
Figure 1-72 Switch
Panel
Table 1-91 Switch Description
Switch Name
Issue 01 (2018-05-03)
Protection components must be provided for PDFs to ensure that the rated AC/HVDC
current of each channel is not less than 14A.
The input circuit breakers of a PDF must match the output circuit breakers.
In HVDC application scenarios, ensure that the protection components meet HVDC certification and the
fuses and circuit breakers meet positive and negative pole protection.
If the front-end PDF does not provide enough power inputs, configure a PDB that meets
the following requirements:
− The current of each channel output by the HVDC PDB is not less than 14A.
− Double-channel backup is used.
− The input current is not less than the sum of current of its connected output lines.
1 Hardware Description
Description
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