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AC Power
For Business-Critical Continuity™
® ™
Liebert GXT3 UPS 120V/208V 500VA-3000VA
User Manual
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TABLE OF CONTENTS IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 SAVE THESE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 GLOSSARY OF SYMBOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.0 PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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4.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 4.1 Startup Checklist for the Liebert GXT3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.2 Starting the UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.3 Manual Battery Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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FIGURES Figure 1 Liebert GXT3 rack/tower models—front view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2 Liebert GXT3 minitower—front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ® ™ Figure 3 Liebert GXT3 120V rack/tower models—rear panel components . . . . . . . . . . . . . . . . . . . . . . . . 6 ® ™ Figure 4 Liebert GXT3 208V rack/tower models—rear panel components . . . . . . . . . . . .
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IMPORTANT SAFETY PRECAUTIONS WARNING ! Observe all cautions and warnings in this manual. Failure to do so may result in serious injury or death. Refer all UPS and battery service to properly trained and qualified service personnel. Do not attempt to service this product yourself. Opening or removing the cover may expose you to lethal voltages within this unit even when it is apparently not operating and the input wiring is disconnected from the electrical source. Never work alone. SAVE THESE
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® ™ The Liebert GXT3 -3000RT208 was tested under 20A branch circuit in accordance with the National Electrical Code, ANSI/NFPA 70. To reduce the risk of fire, connect only to a circuit provided with 20A maximum branch overcurrent protection. Battery Safety CAUTION ! Do not dispose of batteries in a fire. The batteries may explode. Do not open or mutilate the batteries. Released electrolyte is toxic and is harmful to skin and eyes. Dispose of used batteries according to the instructions. CAUT
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GLOSSARY OF SYMBOLS Risk of electrical shock Indicates caution followed by important instructions ! AC input AC output Requests the user to consult the manual i - + Indicates the unit contains a valve-regulated lead acid battery PbH2SO4 R Recycle DC voltage Equipment grounding conductor Bonded to ground AC voltage ON/Alarm Silence/Battery Test OFF/Bypass WEEE 3
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Product Description 1.0 PRODUCT DESCRIPTION ® ™ The Liebert GXT3 is a compact, online uninterruptible power system (UPS) that continuously conditions and regulates its output voltage. The Liebert GXT3 is designed to supply microcomputers and other sensitive equipment with clean sine wave input power. Upon generation, AC power is clean and stable. However, during transmission and distribution it is subject to voltage sags, spikes and complete failure that may interrupt computer operations, cau
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Product Description 1.3 Appearance and Components 1.3.1 Front Panel and Controls ® ™ The Liebert GXT3 rack/tower and minitower models in various power ratings have the same general appearance, controls and features (see Figure 1). The various rack/tower and minitower models differ largely in the type of receptacles each has. Figure 1 Liebert GXT3 rack/tower models—front view Ventilation Slots Operation and Display Panel ™ The Liebert GXT3-1000MT120 has the same controls and features in a mini
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Product Description ® ™ Figure 3 Liebert GXT3 120V rack/tower models—rear panel components 500VA, 700VA, 1000VA, 1500VA Models Input Power Plug and Cable 5-15P Input Circuit USB Port Breaker Liebert IntelliSlot Port Output Receptacles, 5-15R External Terminal Block Battery Communication Connector Cooling Fan 2000VA Model Input Power Plug and Cable, 5-20P Input Circuit USB Port Breaker Liebert IntelliSlot Port Output Receptacles, 5-15/20R External Terminal Block Battery Communicatio
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Product Description ® ™ Figure 4 Liebert GXT3 208V rack/tower models—rear panel components 3000VA Model Input Power Plug and Cable, L6-20P Output Output Circuit Input Circuit Receptacle, Breakers USB Port Breaker L6-20R Liebert IntelliSlot Port External Terminal Block Battery Cooling Communication Connector Fan Output Receptacles, L6-15R ™ Figure 5 Liebert GXT3-1000MT120 —rear panel components Input Power Plug and Cable, 5-15P 1000VA Model Terminal Block Input Circuit Communication Bre
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Product Description 1.4 Major Components The operating principle of the UPS is illustrated in Figure 6. Figure 6 Operating principle diagram Input Output Dynamic Bypass TVSS & EMI/ Rectifier/ L1 Inverter L1 RFI Filters PFC DC-to-DC Converter Battery Battery Charger L2/N L2/N G G The UPS is composed of utility input, TVSS and EMI/RFI filters, rectifier/PFC, inverter, battery charger, DC-to-DC converter, battery, dynamic bypass and UPS output. Transient Voltage Surge Suppression (TVSS) and EMI
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Product Description Battery Charger The battery charger utilizes energy from the utility power and precisely regulates it to continuously ® ™ float charge the batteries. The batteries are being charged whenever the Liebert GXT3 is plugged in, even when the UPS is not turned On. DC-to-DC Converter The DC-to-DC converter raises the DC voltage from the battery to the optimum operating voltage for the inverter. This allows the inverter to operate continuously at its optimum efficiency and voltage
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Product Description 1.5.3 Battery Mode ® ™ The Liebert GXT3 enters Battery Mode when utility power fails or is outside acceptable values. The battery system supplies power through the DC-to-DC converter to the inverter to generate clean AC power for the connected loads. When the Liebert GXT3 enters Battery Mode, the UPS sounds a half-second beep at 10-second intervals. When approximately 2 minutes of run time remains, the beeps sound every 5 seconds to warn that the battery is getting low (t
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Installation 2.0 INSTALLATION 2.1 Unpacking and Inspection Unpack the UPS and conduct the following checks: • Inspect the UPS for shipping damage. If any shipping damage is found, report it to the carrier and your local dealer or your Emerson representative immediately. • Check the accessories included in packaging list. If there is any discrepancy, contact your local dealer or your Emerson representative immediately. 2.2 What’s Included With GXT3 UPS • Compact Disk with: ® • Liebert MultiLin
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Installation 2.4 Mechanical Installation ® ™ The Liebert GXT3 may be installed as a tower or in a rack, depending on space and use considerations. The Liebert GXT3 may be used alone, as a single UPS, or with up to four battery cabinets. NOTE When installing the UPS or making input and output connections, comply with all relevant safety codes and standards 2.4.1 Tower Installation To install the Liebert GXT3 as a tower: 1. Take out support bases from the accessories (see Figure 7). Figure 7 Su
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Installation Figure 9 Rotate the operation and display panel Operation and Display Panel Rotated Clockwise 90 Degrees c. Pull the logo on the front plastic bezel cover gently, rotate it 90 degrees clockwise and snap it back into position. The rotated front plastic bezel cover is shown in Figure 10. ® ™ d. Replace the front plastic bezel cover on the Liebert GXT3 . At this point, the UPS operation and display panel and logo have been rotated 90 degrees clockwise, which provides upright viewin
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Installation 2.4.2 Rack Installation NOTE ® ™ • When the Liebert GXT3 is installed in a rack, it must be supported by a shelf, fixed rails or slide rails on each side. The factory-supplied rack mount handles cannot sup- port the weight of the UPS. They are used to move the UPS into and out of the rack and attach the UPS to the rack. • Mounting hardware and slide rails are sold separately. Contact your local Emerson representative for these options and any assistance. • GXT3-1000MT120 cannot b
