White Paper

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This DC UPS comes pre-assembled and
factory tested to simplify installation. The
only field connections required are the AC
input to the module and the output to DC
loads. In addition, individual components
are user replaceable and can be swapped
out while the system is operating, allowing
live maintenance without bypass or
generator switchover.
The NetSure
™
ITM features an integrated
control and monitoring system that pro-
vides data on input and output parameters
(including branch circuit loads), as well
as advanced Albér battery management.
An Energy Optimization Mode featuring
Intelligent Power Matching ensures near-
peak efficiency for loads down to 5 percent
Figure 7. A zero-U power
distribution unit provides
power to 48V input loads.
NetSure
™
ITM Row-Based DC UPS
Figure 6. The NetSure
™
ITM is positioned within the row to provide power to multiple racks.
The NetSure
™
ITM is a data center-optimized
row-based 48V DC UPS from Emerson
Network Power. It is designed to support
the move to higher efficiency, density
and flexibility enabled by row-based
power and cooling. Instead of deploying
one large DC power plant, which would
require DC power to be distributed across
the facility, 480V AC power is delivered
directly to the NetSure
™
ITM, which then
provides protected power to racks of 48V
equipment in close proximity [Figure 6].
When additional racks of IT and commu-
nications equipment are required for data
center growth, new DC UPS units can be
added without disruption.
The NetSure
™
ITM integrates power
conversion, battery backup and branch
distribution into a compact, highly reliable
power protection system. (12) individual
AC/DC power conversion units (PCUs)
deliver 70kW per module of conditioned,
isolated 48V power to an internal distribu-
tion bus that charges the batteries and
distributes power directly to the IT or com-
munications equipment. Backup time is
5-10 minutes at full load with the included
10 year-VRLA batteries; traditional DC
systems may be more appropriate if more
than 60 minutes of backup is required.
The system provides up to 22 branch
circuits protected by 100A to 200A circuit
breakers. Each branch is monitored in the
controller for load and trip condition and is
designed to support varying rack densities.
Power distribution in the rack is provided
by NetSure
™
RDB Series zero-U distribution
units that feature plug-and-play connectors
for easy installation and tool-less
maintenance [Figure 7].