Specifications

Liebert Nfinity UPS Guide Specification

4kVA –20kVA (208/120 or 240/120) 4/03 Rev 2

SL-23956

1.5 USER DOCUMENTATION

The specified UPS system is supplied with one (1) user's manual. Manuals include installation drawings and

instructions, a functional description of the equipment with block diagrams, safety precautions, illustrations,

step by step operating procedures, and routine maintenance guidelines.

1.6 WARRANTY

The UPS manufacturer warrants the UPS against defects in materials and workmanship for two (2) years. The

warranty covers all parts for two (2) years and onsite labor for ninety (90) days. With start-up provided by

Liebert Global Services, the warranty covers all parts and onsite labor for two (2) years. Maintenance contract

packages are also available.

1.7 QUALITY ASSURANCE

1.7.1 Manufacturer Qualifications

A minimum of thirty year's experience in the design, manufacture, and testing of solid-state UPS

systems is required.

1.7.2 Factory Testing

Before shipment, the manufacturer fully and completely tests the system to assure compliance with the

specification. These tests include operational discharge and recharge tests on the internal battery to

guarantee rated performance. The UPS ships completely assembled and all modules installed.

2.0 PRODUCT

2.1 FABRICATION

All materials and components making up the UPS will be new, of current manufacture, and not in prior service

except as required during factory testing. The UPS is constructed of replaceable subassemblies. All active

electronic devices are solid-state.

2.1.2 Wiring

Wiring practices, materials, and coding will be in accordance with the requirements of the National

Electrical Code (NFPA 70) and other applicable codes and standards.

2.1.3 Cabinet

The UPS unit is comprised of: power module, battery module, control module, and user interface

module housed in a single free-standing enclosure and meets the requirements of IP20. The UPS

system is designed such that the battery modules may be installed into any module bay in the cabinet

and power modules into any module bay in the top half of the cabinet. The UPS cabinet is cleaned,

primed, and painted with the manufacturer's standard color. Casters and leveling feet are provided. 12

bay cabinet dimension is 20 inches wide, 28 inches deep, and 53 inches high.

2.1.4 Cooling

The UPS is cooled by forced air via internally mounted fans.

2.2 COMPONENTS

2.2.1 Input Converter

A. General

Incoming AC power is converted to a regulated DC output by the input converter for

supplying DC power to the inverter. The input converter provides input power factor and

input current distortion correction.

B. AC Input Current Limit

The input converter is provided with AC input over current protection.