Dc Power Distribution Unit J58890Cf - Avaya S8700 Installation Instructions Manual

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 32, 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 -54.2 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.
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,
114
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 Approved
NOTE:
These installation tasks correspond to the numbers in
ground for a DC power cabinet,
on page 117
Connecting mixed AC/DC power and ground
Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway
Grounds.
on page 115 shows a typical power and
on page 95 to connect DC power and ground,
on page 115:
on page 115
on page 116
on page 116
on page 116
on page 117
on page 117
on page 122
Figure 32, Typical power and
December 2003