ATT DEFINITY Communications System Generic 3 Planning And Configuration Instructions Manual

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Figure 16 shows a typical power and grounding layout for a remotely located EPN cabinet.  A
ground wire must be connected from the cabinet ground block of both the PPN and EPN cabinets
to an approved ground.  (Also see ``Grounding, later in this section).
OR EQUIVALENT UNIT
REAR
. ..
DISTRIBUTION
RECEPTACLE,
60-HZ 50-AMP 115-VOLT
60-HZ 30-AMP
NEMA 5-50
PROVIDED
POWER
PANEL CUSTOMERPOWER. ..
CORD
10 FEET6 AWG
60-HZ 50-AMP...

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Single-Carrier Cabinet System
Each cabinet requires a separate power outlet, as shown in Figures 17 and 18.  These outlets
must not be shared with other equipment, must not be under switch control, and should be
located outside the cross-connect field area, if possible.  Any available power source can be used
as long as the phase or leg provides 120-volt AC at the required drain.
The Manager I terminal or G3r-MT should be connected to...

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20-AMP
CABINET B
CABINET A
CABINET C
CABINET D
CABINET A OR
MANAGER I
TERMINAL
MANAGER I 20-AMP20-AMPCABINET A
OR
CABINET A
15-AMPCABINET B 2 CABINET SYSTEM
15-AMPCABINET B
4 CABINET SYSTEM
20-AMP
15-AMP
15-AMPCABINET BCABINET C
CABINET D
TERMINAL EXPANSION PORT
NETWORK (EPN)PROCESSOR PORT
NETWORK (PPN)
FIGURE 18.  AC Power Requirements for a Single-Carrier System (Remotely Located EPN)
119 

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Figure 19 depicts a typical power and grounding layout for a single-carrier system with the PPN
and EPN cabinets colocated.  A ground wire from the ground block on the bottom cabinet of the
EPN connects to the single-point ground block on the bottom cabinet of the PPN.  A 6-AWG
ground wire connects the single-point ground block to an approved ground.  (Also see ``Ground-
ing, later in this section).
6 AWG
GROUND
APPROVED POWER
CORD
10...

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Figure 20 shows a typical power and grounding arrangement for a system  with the EPN remotely
located.  A ground wire must be connected from the cabinet ground block of both the PPN and
EPN to an approved ground.  (Also see ``Grounding, later in this section).
6 AWG
GROUND
APPROVED POWER
CORD
10 FEETREAR
115-VOLT
60-HZ
TERMINAL
NOTE:
TO APPROVED GROUND LOCATED
NEAREST THE TELEPHONE COMPANY
OWNED PROTECTOR GROUND BLOCK
AT THE...

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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
BARAPPROVED
GROUND
(SEE NOTE)
NOTE:
10 AWG
COUPLED
BONDING
CONDUCTOR
(CBC)
REAR
-48 V
BATTERY PLANT
REAR
CABINET
GROUND
BLOCK
SYSTEM
SINGLE
POINT
GROUND
UNIT DISTRIBUTIONFRONT EXPANSION PORT
-48 V-48 V...

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Table Q provides the requirements for input DC power.
TABLE Q.  -48 Volt DC Input Power Requirements
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Parameter Requirements
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Static Voltage -48 V DC nominal, -42.5 V DC minimum, -52.5 V DC maximum
(measured at input to system cabinet)...

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TABLE Q (continued).
-48 Volt DC Input Power Requirements
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Parameter Requirements
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Redundancy Redundancy of the battery chargers/rectifiers should be considered.
This would also provide the additional current necessary to recharge
the batteries after...

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Figures 17 and 18 provide a power and grounding layout for mixed AC-/DC-powered multi-carrier
cabinet configurations.
GROUND
BARDISCHARGE
REAR
TELEPHONE COMPANY OWNED PROTECTOR GROUND BLOCK 
-48 V
BATTERY PLANT
CABINET
GROUND
BLOCK
CABINET
APPROVED
GROUND
(SEE NOTE)6 AWG
10 AWG
COUPLED
BONDING
CONDUCTOR
(CBC) GROUND
BLOCK
USE APPROVED GROUND LOCATED NEAREST THE 
-48 V-48 V RTN 
PROVIDED
POWER
PANEL OR EQUIVALENT
CUSTOMERUNIT...

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USE APPROVED GROUND LOCATED NEAREST THE 
GROUND
BATTERY PLANT
APPROVED
GROUND
(SEE NOTE)
DISCHARGE
10 AWG
COUPLED
BONDING
CONDUCTOR
(CBC)CUSTOMER
. ..60-HZ 50-AMP RECEPTACLE,
AC
POWER
CORD
10 FEET
OR 
EQUIVALENT115-VOLT NEMA 5-50
L6-30R
PROVIDED
POWERCOUPLED
BONDING
6 AWGCONDUCTOR 
10 AWG
OR
208-VOLT
60-HZ 30-AMP
SERVICE REAR
CABINET
GROUND
BLOCKOR
PANEL
TELEPHONE COMPANY OWNED PROTECTOR GROUND BLOCK 
AT THE BUILDING ENTRANCE...