Emerson 540VDC manual Features and Benefits, Key Technological Features, Key Customer Benefits

General System Information

1.2.2Features and Benefits

The Liebert FS provides clean constant DC output to the DC bus, at the user-selected, regulated volt- age, until the stored energy is depleted. See Figure 5 for a graphic representation of the performance power and duration curves of single and paralleled unit combinations.

Key Technological Features

•Active magnetic bearings

•Internal, integrated vacuum system

•Synchronous reluctance motor-generator

•Fiber composite flywheel

•Unique patented safety system

Key Customer Benefits

•High reliability

•Significantly increased power supply reliability

•Low total cost of ownership

•Operational flexibility

•Environmentally friendly

•Easy to install and easy to operate.

•Low standby losses

•Small footprint

•Lightweight

•Reliable, cost effective power systems for UPS ride-through needs

1.2.3Applicable Standards and Certification

For distribution in North America, the Liebert FS is listed to the following Underwriter’s Laboratory (UL) applicable requirements:

•UL 508, Standard for Safety for Electrical Industrial Control Equipment;

•UL 1004, Standard for Safety for Electric Motors;

•UL 1248, Standard for Safety for Engine-Generator Assemblies;

The Liebert FS is designed in accordance with the applicable sections of the requirements published by:

•National Fire Protection Association (NFPA)/National Electric Code (NEC)

•National Electrical Manufacturer's Association (NEMA)

•Occupational Safety & Health Administration (OSHA)

The Liebert FS is also listed to the following Canadian Standards as determined by UL (cUL):

•CSA-C22.2 No. 100-04, “Motors and Generators,”

•CSA-C22.2 No. 14-95, “Industrial Control Equipment,”

The "Uniform Building Code (UBC) Zone 4" certification requirements.

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