Dc Power Distribution Unit J58890Cf; Connecting Dc Power And Ground - Avaya G650 Installing

4
Measure the voltage between the neutral and ground side of the receptacle. The ground wire is
green.
5
Verify the meter reads 0 VAC. If not, have a qualified electrician correct the problem.
6
Set all media gateway power modules

DC Power Distribution Unit J58890CF

Connecting DC power and ground

The grounding methods for the DC-powered MCC1 Media Gateway are more complex than that of an
AC-powered MCC1 Media Gateway.
Figure 34, Typical power and ground for a DC power cabinet,
ground layout for a DC power cabinet. The size of the wire required for the -48 VDC and -48 volt return
must ensure the voltage supplied by the battery plant is maintained between -42.5 and -56 VDC at all
times for proper operation and to prevent hardware damage. The wire must be sized for a maximum
voltage drop of 0.5 VDC in each leg of the DC distribution, or 1 VDC round trip.
Perform Global AC Power Distribution Unit J58890CH
power distribution unit (J58890CH only).
Perform these tasks to connect DC Power and Ground (J58890CF only):
•
Connecting grounds for DC battery and power cabinets
•
Connecting DC power cabinet approved ground
•
Connecting AC power to DC power cabinet
•
Connecting ground wires for DC power systems
•
Turning the circuit breakers off
•
Connecting DC power to the media gateways
•
Connecting DC battery cabinet to DC power cabinet
•
If necessary,
80
NOTE:
The type of power required is shown on the media gateway's rear door.
CAUTION:
Grounding of the MCC1 Media Gateway must comply with the general rules for
grounding contained in Article 250:50 of the National Electrical Code 2002. For more
information, see the job aid titled Approved Grounds (555-245-772).
NOTE:
These installation tasks correspond to the numbers in
ground for a DC power cabinet,
on page 83
Connecting mixed AC/DC power and ground
. Plug the AC power cable into the receptacle.
OFF
on page 81 shows a typical power and
on page 61 to connect DC power and ground,
Figure 34, Typical power and
on page 81:
on page 81
on page 82
on page 82
on page 82
on page 83
on page 84
on page 89
Installing the Avaya G650 Media Gateway
June 2004