Meridian America 21 Manual De Usuario

5 5

Configuring the Meridian 1 power system requires attention to the following
points:

 Both AC and DC-powering are available.

 The AC power supply or DC-DC Converter that is used in a particular

module is virtually identical as far as external configuration purposes are
concerned.

 Equipment Module power and cooling criteria are also the same for both

AC and DC.

 A wide variety of Uninterruptible Power Supply (UPS) systems are

available for AC-powered Meridian 1 systems that require reserve 

 AC-powered systems, suited for those applications that do not need reserve

power, require no external power components and connect directly to
utility power.

 All DC systems can be configured as complete systems, with rectifiers

provided by Northern Telecom. They can also be configured to connect

to customer-provided external power.

AC and DC powering schemes differ primarily in the external power
components (external, that is, to the Equipment Modules themselves).

The choice of which powering scheme to use is determined mainly by reserve
power requirements and preferences, and by the existing power equipment at
the site.

Power engineering 553-3001-l 52