Maipu MP1800X-40, Руководство по установке

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Appendix
MP1800X Series Router Installation Manual
E-2
copyright

2017Maipu, all rights reserved
S/N Description
1
Protection ground shall be done for various kinds of communication
equipment and corollary equipment (mobile base station, transmission
equipment, and power supply, etc.) in the equipment room, and the
protection grounds of various kinds of equipment in the station shall be
tandem to the same ground busbar, and the protection grounds of different
pieces of equipment in same equipment room shall be tandem to the
protection ground bar in the same equipment room.
2
The equipment protection ground (PGND) shall be short-circuited nearby to
the protection grounding cooper bar provided by the user, with the
short-circuiting cable of the yellow/green plastic insulated copper conducting
wire above 35mm
2
.
3
The ground terminals with ground symbols at the bottom of the front, back
and side doors of a cabinet must be separately connected to the ground
terminals of the cabinet structure via link cables with cross-sectional area of
not less than 1.6mm
2
.
4 Various metal parts of the equipment cabinet must be guaranteed to have
good conductivity, and the connections of various metal parts of the cabinet
are prohibited from spraying insulation paint.
5
The rack bodies of cabinets on the same row shall be closely connected with
each other through the fastening bolts and spacers at the top. The
30mm*50mm rectangular surface around the fastening bolt connection hole
shall not be sprayed paint, and must be conducted rustproof and
anticorrosion treatment, and spacers and nuts shall have zinc electroplating
with iridescent yellow chromate conversion coating on the surfaces, to
guarantee good electrical contact.
6
When cabinets of the same type are combined, the grounding busbars (if
any) of adjacent cabinets shall be interconnected via busbar short-circuiting
cable with cross-sectional area of 6mm
2
and length of not more than 300mm.
Both ends of such cable shall be separately connected to the grounding
busbar terminals of adjacent cabinets, tightened and fixed.
E1.4 Grounding specifications for communication power
The communication power grounding specification is as shown in the following table.
Appendix Table E-3 Grounding specifications for communication power
S/N Description
1 The AC power supply system of telecommunications rooms shall adopt the
TN-S power supply mode.
2
The entrance for the AC power cable to enter the room shall be equipped
with an AC surge protector (Class C) with nominal discharge current of not