AC Power Systems forBusiness-Critical Continuity

Liebert LTSThe Cornerstone of High-Availability Power Systems

Tel: +852-2690-4118

We’re Emerson Network Power, backed by Emerson, a globalcompany that brings technology and engineering together toprovide innovative solutions for the benefit of our customers.We’re the world leader in providing Business-Critical Continuity™to organizations like yours, enabled by our product and servicecentres of expertise.

Liebert is the market leaderin dual-bus power systems,building the world’s most reliableUPS and Static Transfer Switchproducts.

For maximum availability applications, the Liebert LTS solution provides an automatic, seamless transfer of your business-critical loads between outputs of two independent UPS Systems in a dual-bus power configuration.

ReliabilityTriple logic redundancy foruninterrupted power control.

Liebert LTS Solution, with solid-state digital bus transfer, further extends the market leadership with design benefits unmatched by com-petitive products.• 100% rated, fuseless design• Flash memory enables firmware updates while supporting critical loads• Easily replaceable control/power assembly on units up to 400A to allow maintenance, service, or full replacement• True Internal Triple Redundancy of the logic DSP (Digital Signal Processing)• Internal Dual-Bus Control Power, with two power supplies• Input Surge Protection

The Power to ProtectYour Critical Operations

Product OverviewThe Liebert LTS Solution enables the

technology behind dual-bus power

systems.

A Static Transfer Switch can be connected

between the critical load and the outputs

of two independent power sources.

If the primary should fail, the switch will

automatically transfer the load to the

surviving source.

One-Line Diagrams

FlexibilityThe solution for your configuration

True Front-Access Design: all mechanical and electronic components are accessible from the front of the unit. For installation and service no side or rear access is required.

Optimized Transfer Option: eliminates downstream transformer inrush saturation (patented algorithm), and greatly improves operation when used in primary side switching applications.

Figure 1 Standard LTS transfer Figure 2 Optimized HiSwitch2 transferFigure 2 Optimized LTS transfer

Transformer Fluxes

Primary Currents

Transformer Fluxes

Primary Currents

Figures 1 and 2: Show results for the standard HiSwitch2 vs. the optimized HiSwitch2 for the same condition (alternate source lags 120degrees) respectively. The optimized transfer control algorithm minimizes the transformer saturation current resulting from an out of phase transfer.

Uninterrupted Power forUninterrupted Business Operations

Features of the Liebert LTS

Large LCD Display

The Liebert LTS provides excellent local communications through its LED-based mimic diagram and LCD panel.

While the mimic shows the live power path, the back-lit contrast-adjusting LCD provides you with detailed data on the unit through a user-friendly menu.

Optimized Transfer Option enhances Cost-Efficient System Operation

Top and bottom cable entry: no additional cabinetrequired and no additional cost

Plug in optional boards to enhance yoursystem reducing the initial cost

System Configuration with Optional Output Isolation Transformer

System Configuration with Optional Intput Isolation Transformer

**Built-in Optional Transformers for 63A & 100A only.

Communications and Product OptionsLiebert LTS Solution has a wide choice of monitoringand communications options to keep you connected to your criticalpower protection system.

Communications

• RS-232 Terminal Port (Standard)• RS-232 / RS-485 MOD Bus Protocol (Standard)• SNMP hardware and software provides a connectivity to TCP/IP-Based network (Optional)• The Liebert LTS is capable of providing up to five relay outputs, customizable eight analogue inputs and eight relay outputs (optional).

Dual Bus System Configuration

Communications and Product Options Technical Specifications

Emerson Network Power Enabling Business-Critical Continuity™

We’re here to prepare you for the unknown, whatever comes your way, navigating with you through changing business environments and the uncharted demands they place on your technology infrastructure.

That’s what we mean byBusiness-Critical Continuity™

Ensuring The High Availability ofMission-Critical Data And Applications

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Emerson Network Power, a business of Emerson (NYSE:EMR), is the global leader in enabling Business-Critical Continuity™.The company is the trusted source for custom, adaptive and ultra-reliable solutions that enable and protect its customers’business-critical technology infrastructures. Backed by the largest global services organization in the industry, EmersonNetwork Power offers a full range of innovative power, precision cooling, connectivity and embedded products and servicesfor computer, communications, healthcare and industrial systems. Key product brands within the Emerson Network Powerfamily include Liebert, Knuerr, ASCO, Astec, Lorain.

Emerson Network Power.

The global leader in enabling business-critical

AC Power Systems

Connectivity

DC Power Systems

Embedded Power

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Power Switch & Control

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Embedded Computing

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Tel: +852-2690-4118