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

111
Installing an Avaya SCC1 Media Gateway Stack

Making DC Power Connections

A 30 foot (9 m) cable connects to each cabinet. A special connector on one end of the cable is
plugged into the cabinet power connector. The cable must be cut to length and terminated inside
the J58890R DC power cabinet.
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 112 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 113 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 113, 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 114.
October 2002