Avaya S8700 Installing page 82

82 Installing the Avaya™ S8700 Media Server with Avaya™ MCC1 or SCC1 Media Gateway
The grounding methods for the DC-powered S8700 Multi-Connect configuration are more
complex than that of an AC-powered S8700 Multi-Connect configuration.
''Typical Power and Ground for a DC power cabinet'' on page 83
ground layout for a DC power cabinet. The size of the wire required for the -48 volt DC and -48
volt return must ensure the voltage supplied by the battery plant is maintained between -42.5
and -54.2 volts DC 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 these tasks to connect DC power and ground, power distribution unit (J58890CH-1
Only):
''Install Rectifier Modules and Battery Interface Unit'' on page 84
•
• ''Connect Power and Ground(s)'' on page 85
Perform these tasks to connect DC Power and Ground (J58890CF Only):
NOTE:
These installation tasks correspond to the numbers in
DC power cabinet'' on page
• ''Connect Grounds for DC Battery and Power Cabinets'' on page 86
''Connect DC Power cabinet Approved Ground'' on page 87
•
• ''Connect AC Power to DC Power cabinet'' on page 87
• ''Connect Ground Wires for DC Power Systems'' on page 87
''Turn Circuit Breakers Off'' on page 88
•
• ''Connect DC Power to the Media Gateways'' on page 88
• ''Connect DC Battery Cabinet to DC Power Cabinet'' on page 89
If necessary,
•
83:
''Connect Mixed AC/DC Power and Ground'' on page 89
May 2003
shows a typical power and
''Typical Power and Ground for a