AC Power Systems forBusiness-Critical Continuity

Liebert Transient Voltage Surge Suppressor (TVSS)The Base of the Power Quality

We’re Emerson Network Power, backed byEmerson, a global company that brings technologyand engineering together to provide innovative solutions for the benefit of our customers. We’re the world leader in providing Business-CriticalContinuity™ to organizations like yours, enabled by our product and service centres of expertise.

For all the Power Supply and distributionSystems connected to Business CriticalLoads, Liebert provides a series of TVSS pro-ducts to protect your electronic equipmentsfrom the surges and voltage transients repre-senting a risk for your data.

The Liebert TVSS can be easily connected toUPSs, to distribution panels or at the serviceentrance of the facilities, to defend the inve-stments in Data Centers, Industry,Residential, Medical, Telecom Applications.

The Liebert TVSS products, also called SurgeProtective Devices (SPDs), are high quality,high energy surge current diversion systems,designed to protect sensitive equipmentsfrom damaging transient voltage surges.In digital technology spikes cause false trig-gering and reading on a digital signal, withreduced signal strenght.

Voltage transient Noise

Surge Suppression

High-voltage spikes appearing on sine wave

Surge suppression limits High-voltage spike.It’s your first line of defense for power quality

A Shield against lightnings effects

Typical

Fuse

Liebert®

PHASE CONDUCTOR

NEUTRAL / GROUND

ReliabilityBullet-Proof Protection From Transients.

Electrical power has always beensubject to transients-split-secondovervoltages caused by anythingfrom inductive loads to lightningstrikes. Until the advent of sensitiveelectronic equipment, however,transients were never an issue.

Things have changed. In today'sworld, almost every businessdepends on relatively fragile microe-lectronics to run everything fromsophisticated computers to heavymachinery. Which means that powerdisturbances can disrupt or crippleequipment, causing the loss of data,productivity and money.

That's why smart companies are loo-king for effective ways to intercepttransients, provide clean power intheir facilities and safeguard theirbusinesses from the unnecessarycost of equipment damage anddowntime. This is the base of thePower Quality (Tier one).

The MOV (Metal Oxide Varistors)technology provides a reliable wayto clamp the surge voltage transientswhile diverting surge current, inLiebert Surge Protecting Devicesparallel connected.

MOV Fuse

The modules in Liebert TVSSequipment are designed with aparallel of MOVs devices, each onefused. This is to avoid that a failure ofa single MOV could open a singlefuse upstream the parallel, blocking theprotecting effect of the TVSS system.

FlexibilitySolutions for all the Levels of Exposure

Medium Exposure

AccuVar:designed to protect all kind ofsystems For Unmatched ProtectionThat Exceeds Industry Standards.The AccuVar ACV Series incorporatesproven technology to provideunmatched protection from transientsurges and electrical line noise.

AccuVar utilizes patent pending circuitry to monitor the status of allprotection modes, including neutralto ground. Should protection beunavailable in any mode, the green

LED will be out, and the red LED willilluminate and an audible alarm willsound.

In addition, high isolation form C drycontacts for remote monitoring pro-vide indication of: suppressionsystem failure, under voltage, andphase or power loss. AccuVar's sup-pression integrity monitoring indicatesfailure for both shorted or openedsuppression components.

Islatrol® Elite (series connected): Microprocessor-basedproducts, including indu-strial PLCs, OEM applica-tions, and motion con-trol systems. Multi-stagehybrid design, combiningunique hybrid clampingnetwork with ActiveTracking® technology, to provide protectionagainst internally-generated

IslaGuard HighExposure (IH)Designed for serviceentrance or distributionpanel applications of800 amperes and above.

FlexibilitySolutions for all the Levels of Exposure

Low Exposure High Exposure

DRS:To protect low exposureloads just where theyare.

PowerSure Panel Low Exposure:Designed for use onbranch panels or equip-ment in low exposurelocations.

disturbances by indu-strial equipment. Active Tracking® Filteringeliminates both high voltage transients andpotentially damagingnoise, providing cleanand reliable AC powerFor critical industrialloads drawing up to 3, 5,10 or 20 amps of conti-nuous current.

Technical Specifications

Connection Protection Surge current Response Short Circuit EMI/RFI max Dimensions WeightMode Mode rating/Phase Time Current Rating attenuation WxDxH [mm]] [kg]

DRS Parallel L-N; N-PE 20 kA 25 ns 40 kA - 79x91x68 1.36

PowerSure Panel Parallel All modes 25 kA, 50 kA, <0.5 ns 14 kAIC 40 dB 120x145x136 2.27Low Exposure 100 kA

Islatrol® Elite Series All modes 30kA <0.5 ns - 90 dB 78x103x97 1.36

AccuVar Parallel All modes 65 kA, 80 kA, <0.5ns 200 kAIC 60 dB 121x206x105 3.60130 kA, 160 kA

IslaGuard High Parallel All modes 200 kA, 400 kA <0.5ns 200 kAIC 54 dB 356x406x203 25.40Exposure (IH)

Total cost of OwnershipYou can choose the level of Power Quality you want:Liebert provides you also the basic one (Tier 1), Liebert Transient Voltage Surge Suppressor (TVSS).

TIER 4

TIER 3

TIER 2

TIER 1 Grounding – SPD / TVSS

UPS

Redundancy: Parallel

High Availability: Dual Bus

Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. ©2007 Emerson Electric Co.

Emerson Network Power.

The global leader in enabling Business-Critical Continuity™.

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www.eu.emersonnetworkpower. com

marketing.emea@emersonnetworkpower.com

Emerson Network Power, a business of Emerson(NYSE:EMR), is the global leader in enabling Business-CriticalContinuity™. The company is the trusted source for custom,adaptive and ultra-reliable solutions that enable and protectits customers’ business-critical technology infrastructures.Backed by the largest global services organization in theindustry, Emerson Network Power offers a full range of inno-vative power, precision cooling, connectivity and embeddedproducts and services for computer, communications, heal-thcare and industrial systems. Key product brands within theEmerson Network Power family include Liebert, Knuerr,ASCO, Astec, Lorain.

Ensuring The High AvailabilityOf Mission-Critical Data And Applications.

Locations

EuropeVia Leonardo Da Vinci 16/18

Zona Industriale Tognana35028 Piove Di Sacco (PD) Italy

+39 049 9719 111Fax: +39 049 5841 257

United States1050 Dearborn Drive

P.O. Box 29186Columbus, OH 43229

+1 614 8880246

Asia7/F, Dah Sing Financial Centre

108 Gloucester Road, WanchaiHong Kong

+852 2572220Fax: +852 28029250

While every precaution has been taken to ensure the accuracyand completeness of this literature, Liebert Corporation assumes noresponsibility and disclaims all liability for damages resulting from use ofthis information or for any errors or omissions.© 2007 Liebert CorporationAll rights reserved throughout the world. Specifications subject to changewithout notice.® Liebert and the Liebert logo are registered trademarks of LiebertCorporation. All names referred to are trademarksor registered trademarks of their respective owners.

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