[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

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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

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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

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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

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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.

Operations level: Functional managers can optimize operations, energy, and assets

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

ReferenceDesigns@Schneider-Electric.com. >

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One-line schematics

Bill of materials

Get more information for this design:

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Every reference design is built with technical documentation

for engineers and project managers. This includes

engineering schematics (CAD, PDF), floor layouts,

equipment lists containing all the components used in the

design and 3D images showing real world illustrations of our

reference designs.

Documentation is available in multiple formats to suit the

needs of both engineers and managers working on data

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