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[Reference Design 3]
DESIGN OVERVIEW
Data Center IT Capacity
175 kW
Adaptable from 50 kW to 525 kW
Target Availability
Tier 3
Annualized PUE at 100% Load
1.95 in Miami, FL USA
1.66 in Montreal, Canada
1.78 in St. Louis, MO USA
Total Racks and Average Density
76 racks at 2.3 kW/rack
IT & Facility Floor Space
3313 ft2
Regional Voltage and Frequency
480V, 60Hz
ABOUT THIS DESIGN Air-cooled, packaged chiller
cooling architecture
Energy savings through water-
side economizer during favorable
outdoor conditions
Highly redundant design for
increased availability and
concurrent maintenance
Highly scalable and adaptable
175 kW, Tier 3, Chilled Water, 3313 ft2
INTRODUCTION
The planning process of most projects can be iterative and thereby
expensive. Data center projects are burdened with these challenges and can
benefit greatly from simplification and time savings. Schneider Elect ric’s data
center reference designs help customers optimize the planning process by
providing them with validated, proven, and documented data center physical
infrastructure designs. The use of these designs has a positive impact on not
just the project itself, but also on the performance, reliability, and efficiency of
the data center over its lifetime.
Reference Design 3 includes design information for three spaces: IT space,
facility power, and facility cooling. Combined together, they comprise the
integrated power, cooling and structural systems required to meet the
design’s specifications published in this overview document.
[Reference Design 3] 2
Schneider Electric www.schneider-electric.com
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DESIGN OPTIONS
This reference design can be modified as
follows without a significant effect on the
design’s performance attributes:
Add StruxureWare Power Monitoring
Expert
Provision for load bank
Change UPS batteries
Add/change standby generator options:
Location
Tank size
Fuel type
FACILITY POWER BLOCK DIAGRAM
Facility Power
The facility power system supplies power to all of the critical and non-critical
components within the data center. The architecture used in this electrical
design is a dual path with 2N UPS and N+1 generators. Switching between
generator power and utility is achieved using a programmable logic controller
(PLC). A 1600 amp bus feeds QED-2 electrical and mechanical switchboards.
In the electrical room, UPSs are configured down-stream of the switchboards.
Four Galaxy 5000 units configured to 2N redundancy provide 234 kW of critical
power to the IT room with 8 minutes of runtime. Valve regulated lead acid
(VRLA) batteries are housed in an isolated battery room. Two Galaxy 5000
UPS units configured to 2N redundancy provide 36 kW of power to the pumps in
the facility cooling system. Additional low-voltage transformers are included in
the design to support lighting and other building loads. The power distribution
architecture from the electrical room to the IT space utilizes a combination of LV
panels and InfraStruxure power distribution units (PDUs). The facility power
system is designed to support additional peripheral devices like fire panels,
access control systems, and environmental monitoring and control devices.
Power meters in the electrical path monitor power quality and allow for
predictive maintenance & diagnostics of the system. These meters also
integrate with StruxureWare Power Monitoring Expert.
Every component in this design is built and tested to the applicable ANSI,
NEMA, UL or IEEE standards.
Further design details and schematics are available in the engineering package.
Name Value Unit
Total amps (main bus) 1600 A
Input voltage (main bus) 480 V
Switchboard kAIC 65 kA
Power path Dual
Generator redundancy N+1
IT space UPS capacity 234 kW
IT space UPS redundancy 2N
IT space UPS runtime @ rated load 8 minutes
IT space UPS output voltage 480 V
Facility cooling UPS capacity 36 kW
Facility cooling UPS redundancy 2N
Facility cooling UPS runtime @ rated load 9 minutes
FACILITY POWER ATTRIBUTES
500A, 480V, 65kA
CRAH
500A, 480V, 65kA
800A, 480V, 65kA
1600A, 480V, 65kA
4x PDU and 3x
CRAH Feeds to
IT Space
100A,
480V,
65kA
36 kW
Galaxy
5000
2x CHW Pumps
SSW
HumidifierCRAH
Utility AC
1600A, 480V, 65kA
1600A, 480V, 65kA
G G
LOAD
BANK
117kW
Galaxy
5000
SSW117kW
Galaxy
5000
SSW
800A, 480V, 65kA
100A,
480V,
65kA
36 kW
Galaxy
5000
2x CHW Pumps
SSW
117kW
Galaxy
5000
SSW117kW
Galaxy
5000
SSW
4x PDU and 3x
CRAH Feeds to
IT Space
Packaged
Chiller
Packaged
Chiller
[Reference Design 3] 3
Schneider Electric www.schneider-electric.com
Document Number RD03DS Revision 2
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FACILITY COOLING BLOCK DIAGRAM
DESIGN OPTIONS This reference design can be modified as
follows without a significant effect on the
design’s performance attributes:
Add StruxureWare Cooling
Monitoring Expert
Facility Cooling
The mechanical design utilizes chilled water as the primary medium for heat
dissipation. The architecture consists of dual chilled water loops. The cooling
system contains two 271 kW air-cooled, packaged chillers in a 2N redundant
configuration. Economization is achieved with a dry cooler to save energy
during favorable outdoor conditions.
In order to extend availability of chilled water during a power outage, redundant
3500 gallon water storage tanks provide 12 minutes of continuous cooling.
The piping architecture of the mechanical system feeds room-based Uniflair
Chilled Water CRAHs in the IT space. It also feeds room-based CRAHs in the
electrical and battery rooms. More information on the cooling configuration is
provided in the IT space section of this document.
This design is instrumented to work with StruxureWare Cooling Monitoring
Expert.
Further design details such as dimensions, equipment placement, temperature
set points, pipe sizing, flow rates, and pressure drops are available in the
engineering package.
FACILITY COOLING ATTRIBUTES
Name Value Unit
Total cooling capacity 271 kW
Input voltage 480 V
Heat rejection medium Chilled water
Mechanical redundancy 2N
Outdoor heat exchange Air-cooled,
packaged chiller
Coolant supply temperature 46 F
Coolant return temperature 56 F
Storage tank size 3500 gallons
Ride-through time 12 minutes
Economizer type Water-side
VFD
System
bypass
VFD
Water
Economizer
Thermal Storage
Dirt/air
separatorStrainers
Packa
ged
Chille
r
CW supply
to IT space
CW return
from IT space
VFD
System
bypass
VFD
Water
Economizer
Thermal Storage
Expansion
tankCity Water
Dirt/air
separatorStrainers
Pa
ckag
ed
Chille
r
CW supply
to IT space
CW return
from IT space
Piping detail inside IT space
CW supply
CW return
Un
ifla
ir
CW
CW supply
CW return
Unifla
ir
CW
Unifla
ir
CW
[Reference Design 3] 4
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Name Value Unit
IT load 175 kW
Input voltage 480 V
Supply voltage to IT 120 / 208 V
Average density 2.3 kW/rack
Number of racks 76 racks
IT floor space 1863 ft2
Single or dual cord Dual
Heat rejection medium Chilled water
CRAC/CRAH type Room-based CRAH
CRAC/CRAH redundancy N+1
Containment type None
DESIGN OPTIONS
This reference design can be modified as
follows without a significant effect on the
design’s performance attributes:
Add environmental and security
management
Change rack options (tall,
wide, deep)
Change power distribution options
Rack PDU type (basic,
switched)
Add StruxureWare Data Center
Expert
IT ROOM ATTRIBUTES
IT Space
The IT capacity of this design is 175 kW. The design is highly scalable and
adaptable; it can be configured to support IT loads within a range. Smaller
starting loads as low as 50 kW can be supported by making adjustments such
as reducing the number of IT pods or decreasing the capacity of the UPSs.
Likewise, this design can be used as a baseline for larger loads as high as 525
kW by using a step and repeat approach to the design. This flexibility drives
efficiency and defers capital expenditure until needed.
The IT space design specifies all of the physical infrastructure systems, as well
as their physical arrangement/spacing, required to meet the overall design’s
performance attributes. This includes racks, PDUs, rack power distribution,
cooling units, and airflow management systems.
Each pair of rows (pod) within the IT space can be “stepped and repeated” in a
standardized and predictable manner. This enables right-sizing of power and
cooling that scales with IT growth. Each pod supports an average power
density of 2.3 kW per rack. All the pods are outfitted with integrated power
distribution.
Each pod is powered by floor mount factory-configured power distribution units
(PDUs). Every rack is configured with a metered rack-mount PDU to enable
remote monitoring of the units for efficiency and capacity management.
The space is cooled by N+1 redundant Uniflair Chilled Water CRAHs that
control the supply of cool air by monitoring the temperature in the space.
The security of the room is maintained at multiple points. At the rack level,
access is controlled by a door lock and sensor. At the room level, security
cameras are utilized for monitoring.
RR/B-2/Z2
RR/D-4/Z4
RR/C-11/Z3
RR/A-11/Z1
RR/B-8/Z2
RR/E-12/Z6
RR/D-5/Z4
RR/B-6/Z2
RR/D-2/Z4
RR/F-3/Z5
RR/E-7/Z6
C C/E
-1
RR/B-14/Z2
RR/D-12/Z4
RR/A-7/Z1
RR/E-2/Z6
RR/E-17/Z6
RR/E-13/Z6
RR/D-16/Z4
RR/C-2/Z3
RR/E-14/Z6
RR/E-8/Z6
RR/C-5/Z3
RR/A-13/Z1
RR/C-17/Z3
RR/A-17/Z1
RR/C-16/Z3
RR/D-6/Z4
RR/C-8/Z3
RR/E-15/Z6
RR/B-13/Z2
RR/D-7/Z4
RR/B-4/Z2
RR/B-3/Z2
RR/B-11/Z2
RR/E-6/Z6
C C/A
-1
RR/E-16/Z6
RR/C-7/Z3
RR/D-8/Z4
RR/B-16/Z2
RR/C-13/Z3
RR/E-11/Z6
RR/B-5/Z2
RR/F-5/Z5
RR/F-7/Z5
RR/A-16/Z1
RR/B-15/Z2
RR/B-12/Z2
RR/A-8/Z1
RR/A-3/Z1
RR/A-6/Z1
RR/A-4/Z1
RR/D-11/Z4
RR/C-4/Z3
RR/D-15/Z4
RR/C-15/Z3
RR/A-5/Z1
RR/A-15/Z1
RR/C-6/Z3
RR/D-13/Z4
RR/A-14/Z1
RR/F-6/Z5
C C/C
-1
RR/F-4/Z5
RR/B-17/Z2
RR/C-3/Z3
RR/D-3/Z4
RR/A-2/Z1
RR/A-12/Z1
RR/E-4/Z6
RR/D-17/Z4
RR/C-12/Z3
RR/C-14/Z3
RR/E-3/Z6
RR/E-5/Z6
RR/F-2/Z5
RR/D-14/Z4
RR/B-7/Z2 P
P/C-20/Z1
PP/A-20/Z1
PP/C-20/Z1
PP/A-20/Z1
PP/C-20/Z1
PP/A-20/Z1
[Reference Design 3] 5
Schneider Electric www.schneider-electric.com
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Design Attributes OVERVIEW Value Unit
Target availability Tier 3 Tier
Annualized PUE at 100% load 1.95 / 1.66 / 1.78
Data center IT capacity 175 kW
IT & facility floor space 3313 ft2
Average density 2.3 kW/rack
FACILITY POWER Value Unit
Total amps (main bus) 1600 A
Input voltage (main bus) 480 V
Switchboard kAIC 65 kA
Power path Dual
Generator redundancy N+1
IT space UPS capacity 234 kW
IT space UPS redundancy 2N
IT space UPS runtime @ rated load 8 minutes
IT space UPS output voltage 480 V
Facility cooling UPS capacity 36 kW
Facility cooling UPS redundancy 2N
Facility cooling UPS runtime @ rated load 9 minutes
FACILITY COOLING Value Unit
Total cooling capacity 271 kW
Input voltage 480 V
Heat rejection medium Chilled water
Mechanical redundancy 2N
Outdoor heat exchange Air-cooled, packaged chiller
Coolant supply temperature 46 F
Coolant return temperature 56 F
Storage tank size 3500 gallons
Ride-through time 12 minutes
Economizer type Water-side
IT SPACE Value Unit
IT load 175 kW
Input voltage 480 V
Supply voltage to IT 120 / 208 V
Average density 2.3 kW/rack
Number of racks 76 Racks
IT floor space 1863 ft2
Single or dual cord Dual
Heat rejection medium Chilled water
CRAC/CRAH type Room-based CRAH
CRAC/CRAH redundancy N+1
Containment type None
[Reference Design 3] 6
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Demo:
Visit www.apc.com/software to learn more about StruxureWare for Data Centers! >
Data center infrastructure management (DCIM)
Good design and quality construction alone do not ensure a highly available &
efficient data center. Data centers require on-going monitoring and management to
ensure the facility lives up to its design intent. StruxureWare for Data Centers is a
software management suite designed to collect and manage data about a data
center’s assets, resource use, and operational status throughout the life cycle of the
facility. This information is then distributed, integrated, and applied in ways that help
managers optimize the data center’s performance and meet IT, business, and
service-oriented goals. From IT assets to racks, rows, rooms and buildings,
StruxureWare for Data Centers delivers the right information to the right users at the
right time.
Control level: Experts, on site or remotely, can control process performance and
ensure business continuity in real time, while tracking energy consumption in a highly
critical and secure environment.
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through smart analytical tools, often spanning multiple sites.
Enterprise level: C-level executives can drive their sustainability strategy efficiently,
choosing the best scenario that meets their business objective to conserve
enterprise-wide resources.
StruxureWare for Data Centers allows for flexibility when requirements and
implementation strategies change over time. StruxureWare software applications
and suites simplify integration time, improve reliability, enhance visibility to energy
information, and streamline operational efficiency.
[Reference Design 3] 7
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Click here to register to receive the Engineering Package for this design, or email
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