8 Surge Protection and Grounding
8.1 Surge Protection
Surge Protection for Signal Ports
● Indoor signal ports comply with 1 kV surge protection in common mode.
● Signal ports for cables routed out of the pre-fab. module pass the 3 kA
impulse current test.
8.2 Grounding
Internal Grounding
The main earthing terminal (MET) is installed in the pre-fab. module and connects
to the external ground grid over ground downleads.
Equipment in the pre-fab. module connects to the ground busbar over ground
cables and are insulated from other metal parts.
Figure 8-1 Internal grounding diagram
The actual cable path varies depending on the site.
External Grounding
M12 bolt ground points are evenly located on the pre-fab. module exterior. Ensure
that the two ground points are connected to the ground grid. There are two
FusionDC1000A Prefabricated All-in-One Data
Center
Product Description (IT Scenario) 8 Surge Protection and Grounding
Issue 01 (2021-04-20) Copyright © Huawei Technologies Co., Ltd. 100
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