AEG 2.33 2 user manual Operation in manual bypass, Parallel operation

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In all these cases the output voltage of the UPS is supplied by the emergency bypass line through the static bypass commuter switch (Fig. 12), provided that the EPO is inactive.

3.3.4. Operation in manual bypass

When we wish to perform some maintenance check on the device, it may be disconnected from the mains without any need to cut the power supply to the system and affect the critical load. The UPS may be altered, only by technical or maintenance personnel. For maintenance bypass follow the special instructions for that purpose (refer chapter 5.4).

3.4. Parallel operation

Fig.13:  Single line diagram for UPS parallel system

2 UPS’s can be paralleled to one UPS system for redundancy purposes or to double the maximal load level. Only identical UPS with the same ratings can be paralleled. Fig.13 shows the single line diagram of a parallel system of Protect 2.33 2.0 showing the power connections and the control bus cables. Two UPS running in parallel always do load-sharing. Parallel operation offers several advantages like higher availability or “modular” adaption of the UPS system to cover increasing power demands.

The parallel system management is based on a dynamic MASTER-SLAVE principle, where the first UPS in normal operating mode will become MASTER. It has the control of the second UPS (SLAVE).

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Contents Protect 2.33 Contents Operation Maintenance, warranty and service Introduction Using this manualSymbols and conventions used For more information and help Safety and instructionsManagement declaration Quality and standard guaranteeEnvironmental protection StandardsViews Views of the equipment PresentationNot available for Protect 2.33 No -3 battery cabinet front view with front door closed Corresponding legends for the equipment views LCD Operating principle Structure Structural schemaOperation with inverter not active Normal operationOperation with mains failure Parallel operation Operation in manual bypassThere are two operation modes possible Important safety instructions InstallationBattery safety instructions Cabinet access Bypass Input Output Set up and installation Unpacking and content checking Transportation to site StorageLocation Front view for parallel system Connection To the mains connection, terminals X1 toPage Connection of the output, terminals X6 to Page Connection example between a UPS and two battery cabinets Interface relay contacts, connectorConnector DB9 X31 COM-interface RS232 and RS485, connectorPage Parallel BUS connection EPO terminalsParallel BUS Connection Start up Control before start up Start up procedureOperation Close Battery Switch LED indications control panel PC Complete UPS shutdownTransfer to maintenance bypass Emergency power off EPO operationBypass manual switch Maintenance Principle of operation Transfer to normal operation Close Battery Switch Control panel parts Control panel and display descriptionTouch Screen Basic functions of keyboard from synopticControl panel parts Main Messages menus and classification in submenusMenu structure Screen 0.0 Main Screen Screen description Main level screen menuMain UPS status control screen menuPage 3. ‘‘MEASURES level screen menu Page Page Screen 3.0 Settings and its submenus 4. ‘‘SETTINGS level screen menuModbus Screen Page Page 5. ‘‘ALARMS level screen menu UPS Rectifier blocks Alarm list displayed in the LCD panel Alarm Page Page Alarm Page Page Page Page Alarm Error in configuration memory Screen 5.0 Data logger  6. ‘‘DATA Logger level screen menuPage Basic maintenance guide Maintenance, warranty and serviceBattery fuses BatteriesCapacitors Warranty conditionsCooling Fan Annexes Static Bypass Type Dimensions & Weight External Battery Cabinet External battery cabinetTo provide for Safety InstructionsPage Page Page Operating Instructions 8000032013 BAL, EN

2.33 2 specifications

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