Pow-R-Flex low ampere busway
Data center
For mission-critical
data center
designs
Pow-R-Flex
low ampere busway
Pow-R-Flex low ampere busway sets the standard for overhead power
distribution systems for mission-critical data center designs.
Data center power distribution
For years, traditional data
centers were designed around
clean aesthetic rooms, and
power cables were layered
below floor tiles. That design
made it difficult to implement
upgrades and changes. Further,
it created airflow issues with
the underflow cooling.
The next-generation data center
designs have shifted the underfloor power cables overhead,
using cable tray, to improve
cable organization. However,
that does not solve the problems encountered with changes
and upgrades—modifications in
cable routing and outlet wiring
take time and can be costly.
Eaton’s Pow-R-FlexE low
ampere busway provides
flexibility, modularity, safety
and reliability. Pow-R-Flex
busway is designed to meet
a host of power system
requirements:
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EATON CORPORATION Pow-R-Flex low ampere busway 
•
Current load ratings from
150A through 600A
•
Voltage ratings from
120 Vac through 600 Vac
•
Multiple grounding options:
integral housing ground,
internal ground conductor
and isolated ground conductor
•
Multiple neutral options:
100% neutral conductor and
oversized neutral conductor
•
High fault current ratings
Multiple plug-in unit configurations are available to connect
power to server cabinet loads
with capacity to meet high
power demands:
•
Receptacle/connector plug-in
units come fully wired from
the factory, ready to plug in
and connect power
•
One, two or four circuits
per plug-in unit with any
combination of singleor three-phase circuits
up to 12 poles
•
Current ratings from
15A to 60A per circuit
•
NEMA,T California Standard
and IEC 309 pin and sleeve
receptacles and connectors,
which can be fixed mounted
to the enclosure or cord
mounted to drops coming
down from each plug-in unit
•
All plug-in units can be
installed on any Pow-R-Flex
busway current rating,
eliminating the confusion
of having specific plug-in
units by busway rating
•
Branch circuit monitoring
is available for busway runs
and receptacle plug-in units
with ModbusT RTU
communications
Modularity
Safety
Reliability
Economical
Eaton’s Pow-R-Flex busway is
engineered to accommodate
changes and updates in data
center floor layouts:
Data centers need to be
available all of the time. So,
as circuits need to be added
or removed, the busway needs
to remain energized. Eaton
engineered the Pow-R-Flex
with enhanced safety in mind.
Eaton has a long track record
of providing reliable busway
solutions for around-the-clock
systems.
It has long been proven that the
total installed cost of a busway
system is less than the cost of
a traditional wire and conduit
system, saving time and labor.
•
•
Pow-R-BridgeE joint
connections allow the
busway sections to be
joined to each other
quickly without the use
of special tools
Sections are reusable
and can easily be added,
removed or repositioned
per user requirements
•
Busway may be mounted
in any orientation
•
Can be installed to run
through walls and floors
•
All Pow-R-Flex busway ratings
and configurations have been
tested and listed to ULT 857
safety standards
•
All conductors remain fully
enclosed, eliminating any
incidental contact with live
conductors from hands,
tools and wire
•
Plug-in provisions along
the busway have a spring
closure safety shutter that
automatically opens and
closes when a plug-in is
inserted or removed
•
•
•
Busway fault current ratings
range from 22 kAIC to 42 kAIC
symmetrical rms
•
It comes ready to install and
eliminates the need to install
additional cables, trays and
outlets
•
Each outlet plug-in unit comes
fully wired, ready to use
•
It is reusable and expandable.
Should the need arise to
change the server floor layout,
it can be changed and rerouted to meet the changing
needs of the data center, eliminating the need to purchase
new cable and conduit
•
Each joint fitting uses
Belleville washers that apply
constant pressure in the joint
as the conductors expand
and contract from heating
and cooling, preventing
the joint bolt from loosening
over time
•
Plug-in units use spring
tension finger clusters that
clamp onto the phase
conductors when inserted
into the busway
•
Optional SmartBoltsT offer
a visual indication of joint
bolt tension, eliminating the
need to check torque or do
thermo scans
•
Engineered to accommodate data center changes and updates
•
Easy to install
•
Offers enhanced safety and meets UL 857 standards
•
Saves significant time and labor
•
Reusable and expandable
Receptacle connector and
breaker combinations have
been tested to UL 231
section 26, for fault current
ratings up to 25 kAIC at 240V
Key Pow-R-Flex
busway benefits
The Pow-R-Bridge joint fitting
connects one busway section
to another, uses special torque
indicating bolts for proper
installation torque, and
eliminates the need for
special or calibrated tools
EATON CORPORATION Pow-R-Flex low ampere busway 
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Pow-R-Flex features
Eaton’s Pow-R-Flex busway offers the
features and flexibility needed in today’s
modern data centers.
•
150A to 600A
•
Copper or aluminum conductors
•
Single- or three-phase
•
600V rated
•
Integral, internal and isolated
ground options
•
Oversized neutral options
•
Seismic qualified
•
High busway fault current ratings
(22 kAIC to 42 kAIC)
•
UL 857 listed for all ratings
•
Same physical size for all ratings
•
Metering options for busway
and plug-in units
•
Standard colors are black
and ANSI 61 gray
Data center configurations
Product reliability is key to diverse data center environments.
Eaton has a proven installed base with well-known companies.
Duct configurations
Routing power through diverse building environments can be challenging.
Eaton offers many busway fittings to meet any building application.
Plug configurations
Flexibility in power connections is key to rapidly changing data center environments.
Eaton offers many NEMA receptacle and connector configurations.
Eaton Corporation
Electrical Sector
1111 Superior Ave.
Cleveland, OH 44114
United States
Eaton.com
© 2012 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. BR01701006E / Z11574
January 2012
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of Eaton Corporation.
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of their respective owners.