Instruction manual

POWER AND GROUNDING
DC Power Requirements
Multicarrier Cabinet System
A DC power plant maybe used to power the multicarrier system cabinets. Figure 31 shows a typ-
ical power and grounding layout for a DC-powered multicarrier cabinet.
EXPANSION PORT
PROCESSOR PORT
NETWORK (EPN) CABINET
NETWORK (PPN) CABINET
FRONT
FRONT
DC POWER
DISTRIBUTION
UNIT
-48V ❍
❍
-48 V RTN
-48 V
-48 V RTN
REAR
DC POWER
DISTRIBUTION
UNIT
REAR
CABINET
GROUND
BLOCK
SYSTEM
SINGLE
POINT
GROUND
❍
❍ ❍
❍ GROUND
(75A (75A
APPROVED
❍ DISCHARGE
GROUND
BAR
❍
(SEE NOTE)
-48 V
10 AWG
COUPLED
BATTERY PLANT
BONDING
CONDUCTOR
CABINET
GROUNO
BLOCK
1-AWG UP
TO 50 FEET
OR ENGINEERED
FOR LESS
THAN 1%
VOLTAGE DROP
(CBC)
NOTE:
USE APPROVED GROUND LOCATED NEAREST THE TELEPHONE
COMPANY OWNED PROTECTOR GROUND BLOCK AT THE
BUILDING ENTRANCE FACILlTY
FIGURE 31. Typical Multicarrier Cabinet System DC Power and Grounding Layout
(EPN Colocated)
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