Maipu MP1800X-40, Руководство по установке

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MP1800X Series Router
Appendix
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2017Maipu, all rights reserved
E-1
E Equipment Grounding Specifications and Protection
E1 Equipment grounding specifications
Grounding specifications include general grounding specification, grounding
specification for the building of equipment rooms, equipment grounding specification,
communication power grounding specification and ground cable laying specification.
E1.1 General grounding specifications
The general grounding specification is as shown in the following table.
Appendix Table E-1 General grounding specifications
S/N Description
1
The grounding design shall be done according to the voltage-sharing and
equipotential principle, i.e., the equipotential bonding mode in which the
working ground and protection ground (including shielded grounding and
distribution frame lightning protection and grounding) share a group of
ground body.
2
Protection ground shall be done for the cable tray, hung iron stand, rack or
casing, metal ventilating duct and metal door and window, etc. in the
equipment room.
3 Protection ground shall be done for the metal parts of the equipment that
normally are not energized.
4 Ground cables shall be guaranteed to have good contact with the protection
ground bar in the equipment room.
5
Other equipment shall not be used as a component of electrical connection
of ground cables.
E1.2 Grounding specifications for the building of equipment rooms
Specific requirements of the grounding specification for the building of equipment
rooms:
The ground resistance of comprehensive communication buildings shall not be greater
than 1Ω, and that of general telecommunication bureaus (stations) shall be less than
5Ω (or relaxed to 10Ω in areas with high soil resistivity).
E1.3 Equipment grounding specifications
The equipment grounding specification is as shown in the following table.
Appendix Table E-2 Equipment grounding specifications