Connecting Grounds For Dc Battery And Power Cabinets - Avaya G650 Installing

Connecting DC battery cabinet to DC power cabinet
If necessary,
Figure 34: Typical power and ground for a DC power cabinet
AC
phase
AC
phase
Figure notes:
1. Approved Ground
2. 1 AWG Ground Wire
3. CBC Ground Terminal Bar at the
MDF (if used)
4. System Single-point Ground
Discharge Bar
5. DC Power Cabinet J58890R or new
DC system

Connecting grounds for DC battery and power cabinets

Note:
The wire in the next step must be sized for a maximum voltage drop of 0.5 VDC
Note:
in each leg of the DC distribution. In this example, 1 AWG is used.
To connect grounds for the DC battery and power cabinets:
90 Installing the Avaya G650 Media Gateway
Connecting mixed AC/DC power and ground
1
2
3
10 AWG
6
circuit
+
breaker
+
8
-
-48
-
VDC
7
10
9
6 AWG
5
4
50A
50A
12
LVD
50A
DC power
50A
from rectifiers
Rectifiers
Green/Yellow
Green/Yellow
Green/Yellow
6. Ground Wire for Battery (+)
7. Battery Frame Ground
8. DC Battery Cabinet
9. Main AC Supply (AC Mains)
10. AC to DC power cabinet
11. To Next DC-powered Media
Gateway
12. DC load circuit breakers
on page 94
on page 100
10 AWG
-48 V RTN
RED
MCC
BLACK
-48 V
10 AWG
-48 V RTN
RED
MCC
BLACK
-48 V
10 AWG
-48 V RTN
RED
MCC
10 AWG
BLACK
-48 V
10 AWG
RTN
RED
11
10 AWG
BLACK
cydfdc3i KLC 050304
10 AWG
10 AWG
10 AWG