Liebert GXT2-4500RT230, GXT2-6000RT230 manual DC-to-DC Converter, Battery, Dynamic Bypass

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System Description

2.5DC-to-DC Converter

The DC to DC converter utilizes energy from the battery system and raises the DC voltage to the opti- mum operating voltage for the inverter. This allows the inverter to operate continuously at its opti- mum efficiency and voltage, thus increasing reliability.

2.6Battery

The UPStation GXT2 utilizes valve-regulated, nonspillable, lead acid batteries. To maintain battery design life, operate the UPS

in an ambient temperature of 20°C to 25°C (68°F to 77°F). Optional external battery cabinets are available to extend battery run times.

2.7Dynamic Bypass

The UPStation GXT2 provides an alternate path for mains power to the connected load in the unlikely event of a UPS malfunction. Should the UPS have an overload, overtemperature, or UPS failure condition, the UPS automatically transfers the connected load to bypass. Bypass operation is indicated by an audible alarm and illuminated amber Bypass LED (other LEDs may be illuminated to indicate the diagnosed problem). To manually transfer the connected load from the inverter to bypass, press the Standby button once.

NOTE

The bypass power path does NOT protect the connected equipment from disturbances in the mains supply.

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Contents GXT2-6000RT230& GXT2-4500RT230 Power AvailabilityPage Table of Contents Troubleshooting MaintenanceSpecifications Operating InstructionsImportant Safety Instructions Glossary of Symbols Introduction Battery Charger Rectifier/Power Factor Correction PFC CircuitInverter System DescriptionBattery DC-to-DC ConverterDynamic Bypass Major Components Main Frame and ElectronicsGXT2, rear view Internal Battery PacksPower distribution boxes, basic, optional Removable Power Distribution BoxWHAT’S Included GXT2 Configuration ProgramInstallation and Configuration Install the Main CabinetTower UPS Installation Rack-Mount UPS InstallationQuantity Installing the Adjustable Rack-Mount Kit-Sold SeparatelyM4 nuts External Battery Cabinet Installation Connect Input/Output Power Connect the Internal Batteries Using the External ConnectorStorage Distribution Box Electrical ConnectionsPD-CEHDWR and PD-CEHDWRBYP Terminal Block Connections Electrical specificationsInitial START-UP and Electrical Checks What You Will Need Configuration ProgramON/Alarm Silence/Manual Battery Test Button Controls and IndicatorsStandby/Manual Bypass Button Battery Level Indicators 5 Green Load Level Indicators 4 Green, 1 AmberFault Indicator LED Red Bypass Indicator LED AmberBattery Mode Operation Normal Mode OperationBypass Mode Operation Battery Recharge ModeCommunications Interface Port Pin 4 Remote Shutdown on BatteryCommunications DB-9 pin assignmentUPS Intelligent Communications Repo switch connection diagram Remote Emergency Power OffMaintenance Internal BatteryInternal Battery Replacement AC Power Connections PD-CEHDWR-Manual Bypass Switch Available DisconnectReconnect Troubleshooting Indicator meaningsLED status Diagnosis/Audible alarm Troubleshooting guide Alarm conditions Troubleshooting guide cont’dBattery run times Auto-Learning Battery Run Times UPS specifications SpecificationsExternal battery cabinet specifications Model Number Power distribution specificationsSpecifications Page Technical Support/Service Company Behind the ProductsLocations