Instruction manual

POWER AND GROUNDING
DC Power Requirements
Multi-Carrier Cabinet System
A DC power plant may be used to power the multi-carrier system cabinets. Figure 21 shows a
typical power and grounding layout for a DC-powered multi-carrier cabinet.
GROUND
DISCHARGE
BAR
APPROVED
GROUND
(SEE NOTE)
NOTE:
10 AWG
COUPLED
BONDING
CONDUCTOR
(CBC)
REAR
-48 V
BATTERY PLANT
REAR
CABINET
GROUND
BLOCK
SYSTEM
SINGLE
POINT
GROUND
UNIT
DISTRIBUTION
FRONT
EXPANSION PORT
-48 V -48 V RTN
UNIT
DISTRIBUTION
FRONT
-48 V -48 V RTN
NETWORK (EPN) CABINET
PROCESSOR PORT
NETWORK (PPN) CABINET
1 GAUGE UP
TO 50 FEET
OR ENGINEERED
THAN 1%
VOLTAGE DROP
FOR LESS
DC POWER DC POWER
USE APPROVED GROUND LOCATED NEAREST THE TELEPHONE
COMPANY OWNED PROTECTOR GROUND BLOCK AT THE
BUILDING ENTRANCE FACILITY
(75A (75A
CABINET
GROUND
BLOCK
FIGURE 21. Typical Multi-Carrier Cabinet System DC Power and Grounding Layout
(EPN Colocated)
122