Turning The Circuit Breakers Off; Connecting Dc Power To The Media Gateways - Avaya G650 Installing

Turning the circuit breakers off

The main circuit breaker on a DC powered MCC1 is located on the front of the PDU. The circuit breakers
on the rear of the PDU control the individual carriers.
To turn off the circuit breakers:
1
Set the main circuit breaker to OFF.
2
Set the carrier circuit breakers to OFF. See
page 83.
3
Connect each remaining media gateway to the AC load center single-point ground.
Figure 35: Power distribution unit (J58890CH)
Figure notes
1 Carrier Circuit Breakers
2 -48 VDC Return Block
3 Frame Ground Terminal Block

Connecting DC power to the media gateways

To connect the DC power to the media gateways:
1
Be sure the main circuit breaker on the front cabinet is OFF.
2
Measure and cut two pieces of 1 AWG (#70) (44 mm
power cabinet to the first media gateway (1 to 5).
3
At the DC power cabinet, connect the -48 VDC wire to the DC OUTPUT circuit breaker. See
Figure 34, Typical power and ground for a DC power cabinet,
RTN (return) wire to the ground discharge bar.
Installing the Avaya G650 Media Gateway
June 2004
Figure 35, Power distribution unit (J58890CH),
1
G
F /
E 2
D /
E
D /
C
B /
C
B /
A
R
I E
R R
C A
D C
R N
8 V
T U
- 4
N G R E
N I
A R
W
J 4
5
6
4 To approved single-point ground block
5 -48 VDC Return Cable
6 -48 VDC Cable
2
) wire long enough to reach from the DC
3
4
psdfdc01 LAO 050404
on page 81. Connect the -48 volt
on
83