Avaya S8700 - Page 115

Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway 115
December 2003
Figure 32: Typical power and ground for a DC power cabinet
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 in each
leg of the DC distribution. In this example, 1 AWG is used.
1 Measure and cut a minimum of a 1 AWG (#70) (44 mm
2
) wire long enough to reach between the
ground connection terminal in the DC battery cabinet and the ground discharge bar in the DC
power cabinet. See Figure 32, Typical power and ground for a DC power cabinet,
on page 115.
Figure notes
1 Approved Ground
2 1 AWG Ground Wire
3 CBC Ground Terminal Bar at the MDF
4 Ground Discharge Bar
5 DC Power Cabinet J58890R
6 System Single-point Ground Discharge
Bar
7 Ground Wire for Battery Cabinet
8 Frame Ground
9 Ground Connection Terminal
10 DC Battery Cabinet
11 Main AC Supply (AC Mains)
12 Single-point Ground Block
13 Connector
14 To Next DC-powered Media Gateway
30A
30A
30A
30A
-48
VDC
-48 V
-48 V
-48 V
-48 V RTN
-48 V RTN
-48 V RTN
G650
G650
G650
10 AWG
RED
10 AWG
6 AWG
10 AWG
10 AWG
10 AWG
10 AWG
BLACK
RTN
cydfdc2i KLC 09160
3
BLACK
10 AWG
RED
BLACK
10 AWG
RED
10 AWG
RED
10 AWG
BLACK
Battery
circuit
breaker
+
-
LVD
Rectifiers
DC power
from rectifiers
+
-
Green/Yellow
Green/Yellow
Green/Yellow
1
2
3
4
5
6
7
8
10
12
13
9
11
14