400VDC in Data & Telecom
Centers
2013-09-05
Data Center Conference, Moscow
Marek Szpek
Business Development EMEA
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information in this document is the property of Emerson Network Power AB. Except as
authorized by Emerson Network Power AB in a written document, those receiving this
document shall keep all the information contained herein confidential, and shall protect
the same from disclosure and dissemination to third parties. While every precaution
has been taken to ensure accuracy and completeness in this document, Emerson
Network Power AB assumes no responsibility, and disclaims all liability for damages
resulting from use of this information or for any errors or omissions. This information in
this document is subject to change without notice.
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Agenda

Data Center Trends and Emerging
Technologies

Gains with 400V DC in Data Center and
Telecom Center

400VDC pilot installations

400VDC Eco-system availability

400VDC power portfolio availability
© 2013 Emerson Network Power Intellectual Property. All rights reserved
Data Center Landscape Changing
 Different compute models
available (enterprise,
cloud, hyper-scale,
co-location)
 Demands for data and
connectivity increase
daily
 Segmentation of
computing applications
 Green data center
operations objectives
Customers have choices like never before
© 2013 Emerson Network Power Intellectual Property. All rights reserved
3
Convergence Creating Choices
VOICE
DC POWER
Traditional AC
Traditional DC
High-Voltage AC
High-Voltage DC
Eco-Mode
Renewables
DATA
AC POWER
Convergence creates several power choices
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AC Power in Data Centers
 30+ years of
history
 Established
ecosystem
 Highly reliable
and efficient
platform
Will be a choice of many customers for years to come
© 2013 Emerson Network Power Intellectual Property. All rights reserved
400V DC – widely discussed and considered in
several applications
 Data Centers
High availability, high efficiency and lower total costs
thanks to a simple architecture
 Telecom sites
Copper savings for telecom central offices lowers
investment
and installation costs
 Commercial buildings / Micro grids
Easy integration of renewable energy sources with a
common
400V DC bus
© 2013 Emerson Network Power Intellectual Property. All rights reserved
400VDC drivers in Data Centers
 Higher availability vs. AC UPS > 6x,
due to more simple architecture
 Increased overall efficiency, 8-12%
(less conversion stages)
 Lower footprint, ≈ 30%
 More simple architecture
- Data center loads are DC loads
- Unnecessary conversions
AC/DC, DC/AC are eliminated
 Easier integration with Renewable
© 2013 Emerson Network Power Intellectual Property. All rights reserved
Source: NTT-Facilities
400VDC drivers in Telecom (48V)
 Key driver Copper cable saving, 10x
 Long distance power feeding
(50 x lower distribution losses)
 Similar architecture to 48V
 2-4% higher overall efficiency
© 2013 Emerson Network Power Intellectual Property. All rights reserved
400VDC drivers in Commercial Buildings and
Micro Grids

Energy sourcing becomes
decentralized
- Local “green” production is
typically DC

Connecting local sources to AC grid
cost energy and money
- Part of the “green” energy is lost in
conversions before it reaches
any “real” load
- DC is converted to AC and back to
DC

Sharing DC bus by different sources
is much simpler than AC grid
- No phase/voltage balancing
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Selection of 400VDC field trials
Nextek
380V DC
Syracuse
University
380V DC
UPN AB.
350V/380V DC
Netpower Labs AB
(several sites)
350V/380V DC
Green.Ch
380V DC
France Telecom
380V DC
SAP
380V DC
France Telecom
380V DC
NTT Group
(several sites)
380V/400V DC
Intel
380V DC
Univ.
California
380V DC
Other Japan Demos
300V/350V DC
Clustered
Systems
380V DC
China Mobile
380V DC
Duke Energy
380V DC
North American
Telecom
380V DC
Telecom
Data Center
China Telecom
240V/380V DC
European Telecom
380V DC
Buildings / Microgrids
Emerson power equipment
© 2013 Emerson Network Power Intellectual Property. All rights reserved
IBM Singapore
380V DC
Vendor participants include:
HP, IBM, EMC, Fujitsu, Hitachi,
NEC
400V Eco-system Availability
DC Power
System
DC Breaker
Rack PDU
Server Power
Supply
Connector
Emerson
ABB
ServerTech*
ABB
Carling
Netpower
Schneider
Delta*
Nader
API
Hubbel
Technologies Rong Feng /
Delta*
Delta
Eltek*
Siemens
Fujitsu*
Anderson
Emerson*
NEI – catalog products available
Delta*
HP – 2013 release of common slot
power supply
LiteOn*
Fujitsu*
IBM* – some X and Z series available
today, new power available 2014
Juniper* – products in evaluation
GE
Supermicro* – 2 servers models
available for trial
Eaton
*Pre-production products available
Components Are Available for the 400V DC Ecosystem,
but Supply Chain Is Still Maturing
11
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ICT Load
HP 1200W 380VDC/12VDC common slot
power supply
- Common slot 1200W (100-240VAC, 48VDC, 380VDC) power unit for
HP’s ”pizza” portfolio/switches, servers etc.
- Highest efficiency, 94% with 380VDC interface
- Commercially available
Source :HP
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IBM 380VDC server
-
New 400VDC power supplies for IBM blade servers planned
for release 2014
Source: IBM
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NEI 380VDC servers
Source: NEI
© 2013 Emerson Network Power Intellectual Property. All rights reserved
Greenfield - Bulk: 400V DC Loads
Redundancy Implementation Options
Bus or cable
Cable or bus cont’d
A
B
A
B
400V DC
Output DC
Distribution
(Alt. 1)
(N+1)
400V DC UPS
N+m Rectifiers
Internal
Distribution
B Side
Battery
Distribution Distribution
400V
A Side
B Side
Equipment Racks
(Alt. 2)
(Opt, Alt. 2)
Bus or cable
Cable or bus cont’d
A
B
Cable or bus cont’d
400V DC
Power strips
Bus or cable
400V DC
(2N)
400V DC UPS
N+m Rectifiers
Internal
Battery
A Side
400V DC UPS
N+m Rectifiers
Internal
Distribution
A Side
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Equipment
Rack
Distribution
B Side
Battery
B Side
Cable saving at transision from 48V to
400V & 400V/48V, 100kW load
48V
Battery
400V
Battery
10m
120kW/48V
Power System
30m
120kW/400V
Power System
1-3 x PDU
200 x 6-63A c.b.
400V
48V
1-3 x PDU
200 x 6-63A
5m
100kW/48V
Telecom Eq.
100kW/48V
Telecom Eq.
21kW-400V/48V
Tot cable material saving ≈ 25
kEUR
Distribution losses saving ≈ 1kW
=1%
35 mm² market price 4.1 EUR/m, 150 mm²market price 19.2 EUR/m
© 2013 Emerson Network Power Intellectual Property. All rights reserved
Available today:
NetSure™ 4015 30kW 400V Integrated System
Standard system offering
 (1) output distribution sub-rack
 (1) power and controls sub-rack
 (2) battery trays (back-up 20kW7min)
 Integrated into 24U 19” IT rack
HWD: 1200mm x 600mm x 1000mm
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Under Development:
Integrated 120kW cabinet module
Output Distribution
(400VDC) single section
Controller
Insulation Failure Detector
Individual input c.b. to
rectifiers
AC Input Breakers
Rectifiers
2x250A/400VAC (A+B)
360kW power system
= 3x120kW
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400V information on Emerson WEB site
http://www.EmersonNetworkPower.eu/400vdc
© 2013 Emerson Network Power Intellectual Property. All rights reserved
Remaining Hurdles for 400VDC
 Limited components
across IT ecosystem
 Standards under
development
 Lack of familiarity with
the technology
 Installed base of
knowledge &
information
These obstacles will be overcome with additional deployments
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