AC Power Systems (UPS)

Micro UPS (0~3kVA) for desktops, servers, telecom closets
Small UPS (3~20kVA) with completely redundant system controls, power modules, battery modules and monitoring options
Medium UPS (20~100kVA) with smaller footprint, higher efficiency and superior performance
Large UPS (>100kVA) with continuous availability
Dual-UPS Systems in Parallel

Desktop UPS

For PCs or workstations where downtime is tolerable, but data loss must be avoided. The UPS should be able to provide enough back-up time for a graceful shutdown of the protected equipment.

Network/Rack UPS

True on-line protection for network servers, bridges, hubs, routers, storage devices and critical workstations. The UPS may require extended battery time to provide adequate ride-through of shorter outages, as well as enough time for a graceful shutdown of the system in the event of an extended loss of utility power.

Large UPS

The widest range of three-phase uninterruptible power supply (UPS) systems for continuous availability applications. These ultra-reliable systems are designed for a variety of applications from 12 kVA to 1000 kVA in single, multi-module and redundant configurations.

Power Management

For applications requiring protection from electrical line problems without the need for back-up capability, Liebert manufactures a full line of power conditioning equipment to shield critical loads from external disturbances. Liebert also makes power distribution systems designed to efficiently deliver this conditioned power to your equipment.

Accessories

Reliable surge suppression products ensure continuous power to your critical systems.

IP Solutions for Cisco

As a Cisco Technology Developer Partner, Emerson has worked with Cisco to develop high availability solutions for Cisco’s Unified Communications portfolio, Unified CallManager, Unified CallManager Express, and Catalyst Switches. The Liebert IP Telephony protection solutions and the Liebert NterpriseIP solutions have completed Cisco Compatibility testing.

Liebert DM
Precision Cooling for Small Equipment Rooms

Liebert DM is designed for year-round temperature and humidity control and air filtration in areas where people and electronics must occupy the same space. Its low profile permits floormount or wallmount installation, and requires little or no floor space.

Features and Benefits

Low total cost of ownership
- Energy saving mode available
- Adapts to different environments

Designed for reliability
- Provides consistent and stable operating environment 24 x 7 x 365

Low mean time to repair (MTTR)
- Maintenance free design for daily
operation
- Standard RS485 port for monitoring
- Small footprint, 100% front access

Highly efficient cooling system
- Ultra wide ambient temperature range and multicondenser configuration
- High sensible heat ratio with scroll
compressor technology

The Liebert DM is ideally suited for:

Communications Base Stations

3G Base Stations

Small / Outdoor equipment rooms

Satellite earth stations

Medium/Small Computer Rooms

Technical Data (Liebert DM)

Technical Data (Liebert DM-S)

Frequently Asked Questions

Why do I need Precision Air Conditioning?
Information processing is the “lifeblood” of all critical operations. When downtime hits these critical operations, it can lead to lost revenue and opportunities. IT or machines produce an unusual concentrated heat load and at the same time, are very sensitive to changes in temperature and humidity. Unstable air conditioning can produce problems ranging from processed “gibberish” to a complete system shutdown.

Comfort air cooling is not designed to handle the heat load concentration and heat load profile of technology rooms, nor is it designed to provide the precise temperature and humidity needed for these applications. Precision air conditioning, however, provides high reliability year-round operation, with the ease of service, sophisticated control and redundancy necessary to keep the computer room up and running 24x365.

How could I sell Liebert DM units which are 2 to 4 times more expensive compared to comfort air cooling brands such as Daikin, Panasonic, Hitachi and others?
Greater savings in electricity consumption should be the main selling pitch for the Liebert DM. By integrating the Liebert DM into their critical operations, customers can significantly reduce their energy bills because of the unit’s great energy efficiency. Low Total Cost of Ownership (TCO) is another aspect we can emphasize to customers. Please utilize the Cost Analysis Calculation Workout with your customers.

Is Liebert DM difficult to install?
Similar to comfort air cooling, the Liebert DM is easy to install with indoor and outdoor units mounted on the floor and connected with copper pipes. A competent air cooling contractor can handle the installation.

What are the cooling capacity models of Liebert DM?
The Liebert DM is available in 5.5kW and 7.5kW capacity models with single-phase power supply, and 7.5kW and 12.5kW capacity models with three-phase power supply.

What benefits do we get from Liebert DM over comfort air conditioning?
The Liebert DM precision air conditioning provides customers with:

30% sensible cooling efficiency

1.5x more airflow to prevent hot spots

20% air filtration eff ciency

low MTTR (mean time to repair)

2x longer operating life

greater reliability for 24x365 operations

sophisticated microprocessor control

When did Emerson start manufacturing precision air conditioning?
Since 1965, Emerson Network Power has been the pioneer in the development and manufacture of precision air conditioning equipment with worldwide service support. Emerson’s precision cooling range is designed for continuous operation, and flexible to address custom load arrangement and future upgrades.

Can Liebert DM work with 1 duty and 1 standby with auto switch over function?
Yes, it can be done through Liebert Controllers which monitor running and stand-by environmental units for proper operation individually, switching operation to a redundant unit in the event of a problem through lead-lag switches via 2-wire communications. This will also balance the runtime of environmental systems for even wear and long system life.

What is the compressor used in Liebert DM?
Liebert DM integrates Copeland Compliant Scroll Compressor, which features superior reliability, effi ciency and long lasting build.

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