Avaya S8700 Installation Instructions Manual page 115

Figure 32: Typical power and ground for a DC power cabinet
1
3
circuit
+
breaker
10
-
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
Connecting grounds for DC battery and power cabinets
1
Measure and cut a minimum of a 1 AWG (#70) (44 mm
ground connection terminal in the DC battery cabinet and the ground discharge bar in the DC
power cabinet. See
Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway
December 2003
2
10 AWG
4
7 6
+
9
-
-48
LVD
VDC
DC power
8
from rectifiers
Rectifiers
13
12
11
6 AWG
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.
Figure 32, Typical power and ground for a DC power cabinet,
5
30A
30A
30A
30A
RTN
Green/Yellow
Green/Yellow
Green/Yellow
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
2
) wire long enough to reach between the
10 AWG
-48 V RTN
RED
G650
BLACK
-48 V
10 AWG
-48 V RTN
RED
G650
BLACK
-48 V
10 AWG
-48 V RTN
RED
G650
10 AWG
BLACK
-48 V
10 AWG
RED
14
10 AWG
BLACK
10 AWG
10 AWG
10 AWG
cydfdc2i KLC 091603
on page 115.
115