Sagem 4450E - Manual (Page 82)

SAGEM 3P@C
3P@C Installation Manual
Page 4-21 Reproduction and communication in any form prohibited without the written permission of SAGEM SA
4.3. 4.3. 4.3. 4.3. Connecting the Power and Grounding Cables
4.3.1. 4.3.1. 4.3.1. 4.3.1. Connecting the Power Cables of the Equipment
The –48V DC power cables should be connected to the output control end and the wiring terminals on the
cabinet. Its installation is shown in the following figure.
Figure 4-28 Installation of the -48V DC power cables
Cabling requirements for the DC power cable are given as follows:
„ First connect the power supply system to the power input cable of the cabinet, and then
connect the power distribution system to the output power cable of the equipment power
supply.
„ In the upward cabling of the system, the output branches shall be arranged from the top down.
„ In the downward cabling of the system, the output branches shall be arranged from the bottom
up.
„ The cables inside the cabinet shall not cross one another and they shall be sorted in order
with different colors of the cables bound into different bundles.
„ The surplus of the cables should be appropriate and the excessive cables should be cut away
and re-processed rather than staying at the cabinet bottom or on the cabinet.
„ The power cables should be connected to the output control end and the wiring terminals on
the cabinet with both ends of such cables attached with labels 5 cm away from the cable root.
„ After connecting the power cables, tighten all the screws (U screws) for fixing the cables at the
back of the cabinet. No loose screw is allowed.
„ In the processing of copper lugs, first crimp them, then solder them and finally put on the heat
shrinkable tubing.
„ Select the appropriate models of cable ties to bind the cables. The cable ties should fact the
same direction and should be cut flat without sharp ends.
„ The power cables should preferably installed from the wiring terminal of the first control switch.
To connect the 220 V AC power supply, it is necessary to use the primary power supply system. Before
connecting the power supply, check the power supply specifications carefully and ensure the correct power
supply is connected so as to avoid any damage to the equipment. Furthermore, ensure that the power of the
primary power system is no less than the power of the 3P@C 4450E switch in its full load, lest the power supply
system be burned. Generally, the full-load power of the 3P@C 4450E switch shall be 60% ~ 70% of the power
capacity of the primary power supply system.