CommScope e-POI, Руководство по установке

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ERA® WCS and e-POI Subracks and Power Supply Unit Installation Guide M0201ABK_uc
Page 54 © June 2021 CommScope, Inc.
Install the Subracks and PSU in an Equipment Rack
Connect the -48Vdc WCS Rear-panel Cables
1
Connect a suitable ground cable from the grounding bolts (studs) to a suitable earth ground, per local and
national electrical codes for each of the subracks. Subrack grounding is required.
2
Connect the rear-panel power, communication, and power cables as shown in the following graphic.
Figure 12. -48Vdc WCS Rear Panel Cabling
3
Connect the cables from the -48Vdc power supply to the two-conductor DC power entry connector that
shipped with the -48Vdc WCS subrack (observing the correct polarity.) and plug it into the WCS subrack.
The DC power entry connector can accept up to 8 AWG (10 mm
2
) wire. The minimum recommended wire
size for the -48Vdc WCS subrack DC power entry connector is 10 AWG (6 mm 2 ).
As in all standard -48Vdc power systems, the Red wire that is connected to the '+' terminal of the WCS DC
power entry plug will also be connected to earth ground back at the -48Vdc power source. Please see the
48Vdc WCS DC Power Supply Requirements in Table 11 on the next page.
e-POI
-48Vdc WCS
To/From eNodeB
e-POI communicaons
e-POI power
Subrack ground
(required)
To -48Vdc Supply
Subrack ground
(required)