–
In the case of the TT power distribution system, you are advised to use an
external ground device. For example, use a grounding device dedicated
for buildings (such as the ground flat steel, ground stud, and ground bar)
or the base steel bar of the reinforcement concrete of the building, or
deploy a new ground grid.
–
Use the ground cable (the cross-sectional area of the ground cable must
be greater than or equal to 6 mm2) to connect the ground bar and all
the internal devices, and the ground bar to the network box in an
equipotential manner through a metallic structure.
–
Connect the external ground cable (PGND cable) of the network box to
the external ground device. As specified by the grounding standard, the
cross-sectional area of the external ground cable must be greater than or
equal to 16 mm
2
.
●
Guide to Ground the Strength Member
OptiXstar P812E
Quick Start
2 Installing the Device
Issue 02 (2020-01-03)
Copyright © Huawei Technologies Co., Ltd.
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