Dc Power Connections With Dc Distribution Unit; Stacking Dc Power Cabinets - Avaya S8700 Installing

108 Installing the Avaya™ S8700 Media Server with Avaya™ MCC1 or SCC1 Media Gateway
Each rectifier assembly can supply up to 50 amps of DC current. A minimum of two rectifiers
are installed in each DC power cabinet to supply a total of 100 amps. A third rectifier assembly
can be installed and is used as a backup (N+1). Each cabinet can pull up to 18 amps. Up to 3 DC
power cabinets can be stacked to supply power to media gateway stacks.
''Typical DC Power Connections'' on page 109 shows a typical power and ground layout for a
DC power system without a J58890CG DC Power Distribution Unit. The J58890CG is required
if the distance between the DC Power cabinet(s) is greater than 30 feet (9 m). ''Connections
Using DC Power Distribution Unit'' on page 110 shows a typical power and ground layout for a
DC power system containing a DC power distribution unit.

DC Power Connections with DC Distribution Unit

A 10 foot (3 meter) power cord is equipped with the appropriate connectors. In the
configuration shown in ''Connections Using DC Power Distribution Unit'' on page 110, each
DC power cabinet stack has a DC Power Distribution Unit associated with it.

Stacking DC Power Cabinets

Up to 3 DC power cabinets can be stacked to supply power to media gateway stacks. See ''DC
Power Cabinet Stack — Rear'' on page 111.
May 2003