Maipu MP1800X-40, Installation Manual

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MP1800X Series Router
Appendix
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2017Maipu, all rights reserved
E-3
S/N Description
less than 20KA.
3
The communication power protection ground shall share a group of ground
body with the communication equipment protection ground, and when the
communication power and communication equipment are in the same room,
they shall share the protection ground bar in the same room.
4 The AC power port shall be added the lightning protection circuit.
5 The positive terminal of -48V DC power shall be grounded at the output of
the DC power.
6
The working ground and protection ground of DC power shall share a same
group of ground body with the protection ground of communication
equipment, and when the communication power and communication
equipment are in the same room, they shall share the protection ground bar
in the same room.
7
The DC power shall be added the protection circuit against surge.
E1.5 Specifications for ground cable laying
The ground cable laying specification is as shown in the following table.
Appendix Table E-4 Specifications for ground cable laying
S/N Description
1 The ground lead shall not be in parallel with or intertwine with the signal
cable.
2 The ground cable is prohibited to be led in overhead from outdoors, but must
be all buried or cabled indoors.
3 The PGND cable shall have no connector, and is prohibited from adding a
switch or fuse.
4 The yellow/green plastic insulated copper conducting wire shall be selected
as the PGND cable.
5 The neutral line of AC power cable is prohibited from connecting to the
protection grounds of transmission equipment and various kinds of
communication equipment in the equipment room.
6 The PGND cable shall not be longer than 45m, and shall be kept as short as
possible. When it is longer than 45m, the user shall be required to set up the
ground bar again nearby.