User manual

16 Introduction
UM6C28C P0728920 Standard 11.00 April 2001 Emerson Energy Systems
Distribution is achieved through the circuit breakers and fuses on the
control and distribution panel.
The NT6C28C(x) MFA150 utilizes 15, 25, or 50 A rectifiers connected in
parallel as building blocks to reach the maximum capacity of 150 A. The
rectifiers operate from a 208 V or 240 V single phase 50/60 Hz AC source,
except for the 15 A rectifier which operates from a 115 V ac source.
Equipment applications
The NT6C28C(x) MFA150 power system is designed to operate with any
telecommunication system requiring up to 150 A capacity.
The NT6C28C(x) MFA150 power system can be used to provide power to
the following products: OC-12, OC-48, DMS-1U, Access Node, DMS-100
remotes installed in huts, controlled environment vaults (CEVs) and
customer premise equipment (CPE).
In many applications, a consistent single point ground topology should be
maintained for all associated equipment. The NT6C28C(x) MFA150
power system complies with the requirements for single point grounding.
Mounting configurations
The NT6C28C(x) MFA150 can be configured in many ways to meet
specific customer requirements. Typical examples are shown in Figures 1
and 2.
Figure 1 shows a standard relay rack equipped with the following
equipment :
• A control and distribution panel equipped with a RPM1000C
intelligent controller/monitor
• MPS 75 power shelves
• 25 A rectifiers
• rack-mounted VRLA batteries
Figure 2 shows a free standing seismic relay rack equipped with the
following equipment :
• a control and distribution panel equipped with an analog controller
card
• MPS150 power shelves
• 50 A rectifiers
• a battery disconnect panel equipped with two circuit breakers
• larger VRLA batteries stacked beside the framework