Avaya G700 Installing And Upgrading page 110

Hardware installation for the G700 Media Gateway and S8300 Media Server
Before you connect the G700 media gateway DC feed cable to the DC power source, check the
DC power source using a KS-20599 digital voltmeter (or equivalent).
To check DC power
1. Verify that the meter reads between -41Vdc and -56 Vdc across the -48Vdc and -48V
Return distribution leads from the DC source.
2. Verify that the meter reads 0V between the -48V Return lead of the DC power source and
the approved ground.
3. If either step 1 or step 2 fails the verification, DO NOT PROCEED with step 4.
Request that a qualified electrician resolve the problem.
4. Connect the DC feed cable for each G700 to the G700 chassis.
5. Connect the DC feed cable for each G700 to the DC power source.
a. Connect the red insulated 10 AWG lead to the -48Vdc Return (positive) source.
b. Connect the black insulated 10 AWG lead to the -48Vdc (negative) source.
Figure 16: DC Wiring Diagram
You have now completed the initial installation of the G700 Media Gateway.
110 Installing and Upgrading the Avaya G700 Media Gateway and Avaya S8300 Media Server
1 AWG
ground wire
Approved DC power cabinet
ground
10 AWG
To Ground
CBC ground terminal discharge
bar at the MDF bar
Ground
connection
terminal
System single
circuit point ground
+
breaker
+
DC battery
cabinet
-
-48
-
VDC
DC power
Frame ground
from rectifiers
Single point
ground
block
Main AC
supply
(AC mains)
6 AWG
30A
30A
LVD
30A
30A
Rectifiers
RTN
Green/Yellow
Green/Yellow
Green/Yellow
10 AWG
-48 V RTN
RED
G7
G650
BLACK
-48 V
10 AWG
-48 V RTN
RED
G7
G650
BLACK
-48 V
10 AWG
-48 V RTN
RED
G7
G65
10 AWG
BLACK
-48 V
10 AWG
RED
To next
10 AWG
G7
G650
BLACK
10 AWG
10 AWG
10 AWG
cydf_dc2 LAO 072403