Emerson Liebert NXL 400 kVA User manual

AC Power
For Business-Critical Continuity™
Liebert®NXL™UPS
250, 300, 400 kVA Single Module
High Availability UPS for Medium & Large Data Centers
Flexibility
Liebert NXL is designed for flexibility in
application, installation, operation, and
maintenance:
•Matching battery and maintenance bypass
cabinets for easy configuration.
•Top or bottom cable entry.
•Internal cabinet cable wiring simplifies
installation.
•Ship-ahead I/O section can be installed
before UPS installation.
Higher Availability
Availability is a primary consideration in any
UPS selection. Liebert NXL is inherently
reliable:
•Liebert ActiveStar®Digital Signal Processor
(DSP) controls – no potentiometers.
•Redundant components – fans, power
supplies, communications cards.
•Provides superior handling of present and
future computer loads, up to 0.95 leading
power factor without derating.
•High input fault current capability .
•Color touch screen controls improve user
interface and reduce risk of human error.
•Excellent dynamic performance.
•Generator and utility friendly with low
current distortion.
Lowest Total Cost of Ownership
Liebert NXL addresses ownership costs with
intelligent design and operating efficiency:
•Front access for installation and service.
•Compact cabinets require less floorspace.
•Improved cable access results in faster
installation.
•Inter-cabinet cabling requires less hard
wiring.
•Built-in battery cabinet breaker isolates
string for ease of service.
•94% operating efficiency.
The industry’s most reliable power protection and advanced
technology has been combined into a new generation of
three-phase UPS systems for high power applications — the
Liebert NXL from Emerson Network Power.
The Liebert NXL provides excellent dynamic performance,
with the ability to handle virtually any input condition while
still providing computer grade output to critical loads.
The leader in large UPS system installations, Emerson offers
complete and unequalled support, including engineering
consultation, the largest and most wide-spread factory-
trained service organization, and the industry’s largest and
most advanced production and witness test facility.
Ideally Suited For:
•Enterprise data centers
•Industrial process equipment
•Laboratories
•Any application requiring high
levels of power availability and
computer-grade power quality

Liebert Corporation
1050 Dearborn Drive
P.O. Box 29186
Columbus, Ohio 43229
800 877 9222 Phone (U.S. &
Canada Only)
614 888 0246 Phone (Outside U.S.)
614 841 6022 FAX
Via Leonardo Da Vinci 8
Zona Industriale Tognana
35028 Piove Di Sacco (PD)
Italy
39 049 9719 111 Phone
39 049 5841 257 FAX
Emerson Network Power Asia Pacific
7/F., Dah Sing Financial Centre
108 Gloucester Rd, Wanchai
Hong Kong
852 25722201 Phone
852 28029250 FAX
liebert.com
24 x 7 Tech Support
800 222 5877 Phone
614 841 6755 (outside U.S.)
While every precaution has been taken to ensure accuracy
and completeness in this literature, Liebert Corporation
assumes no responsibility, and disclaims all liability for
damages resulting from use of this information or for
any errors or omissions.
© 2007 Liebert Corporation. All rights reserved throughout
the world. Specifications subject to change without notice.
All names referred to are trademarks or registered
trademarks of their respective owners.
® Liebert and the Liebert logo are registered trademarks
of the Liebert Corporation.
SL-30600 (03/08) Printed in USA
Emerson Network Power.
The global leader in enabling
business-critical continuity.
AC Power
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Services
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Emerson Network Power and the Emerson
Network Power logo are trademarks and
service marks of Emerson Electric Co.
©2008 Emerson Electric Co.
Liebert NXL System Features
Advanced UPS Design
True on-line double conversion
topology.
Superior overload and fault-clearing
capability.
High operating efficiency levels – up
to 94%.
Excellent dynamic performance –
medium frequency PWM inverter.
Compatible with Generation 3 server
power supplies to meet current and
future needs.
Supports leading power factor loads,
up to 0.95 without derating.
Latest generation IGBTs.
Advanced inverter control provides
active harmonic cancellation.
Output isolation transformer.
Continuous duty static bypass switch.
Output filter reduces total harmonic
distortion to 2.5%.
Power factor management and
generator friendly operation.
Input filter minimizes voltage
distortion to other equipment
connected to UPS input utility feed.
Compact footprint.
Large Touch-Screen User Display
Easy operation, monitoring and
control
System one-line view
Advanced metering and key statistics
Input/Output breaker control
Liebert NXL Battery Cabinet
Flexible runtime solutions by
paralleling cabinets
Built in battery disconnect
Front access only for installation and
service
Battery isolation minimizes the risk of
downtime due to a catastrophic battery
failure, and reduces the risk of electric
shock during service
Battery ground fault alarm
Battery temperature compensation
Equalize charging
Optional integrated Alber technology
battery monitoring
Liebert NXL Maintenance Bypass
Cabinet (MBC)
Allows UPS maintenance without load
power down
Attached and stand-alone models
available
Matched line-up design
Top and bottom cabling
Serviceability & Safety
Full front access design for installation
and service
Improved contractor cable access for
ease of installation
Meets NEC requirements
Inner door design for safety meets Arc
Flash requirements
UL 1778 Listed (4th Edition)
UPSBattery Cabinet Maintenance
Bypass
Cabinet
Typical Line-up