Dc Power Distribution Unit J58890Cf - Avaya G650 Installing

3. Verify the meter reads 106 to 128 VAC. If not, have a qualified electrician correct the
problem.
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 OFF. Plug the AC power cable into the receptacle.

DC Power Distribution Unit J58890CF

Note:
The type of power required is shown on the media gateway's rear door.
Note:
Connecting DC power and ground
!
CAUTION:
Grounding of the MCC1 Media Gateway must comply with the general rules for
CAUTION:
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).
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
and 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
ground, power distribution unit (J58890CH only).
Perform these tasks to connect DC Power and Ground (J58890CF only):
Note:
These installation tasks correspond to the numbers in
Note:
and ground for a DC power cabinet
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
on page 68 to connect DC power and
on page 90:
on page 91
on page 91
on page 91
on page 92
on page 93
on page 90 shows a typical power
Figure 34: Typical power
on page 90
Issue 2 January 2005 89