Emerson 480V, 60HZ 4.2.3Operating Principles Redundancy Paralleling, 4.2.4Operation Modes Summary

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4.2.3Operating Principles Redundancy Paralleling

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Figure 17 Paralleling cabinet with input, bypass and distribution circuit breakers

480V, 3W

System Input

MBB

 

Liebert NX UPS (40-200kVA)

 

 

Bypass

 

 

Static

 

 

Switch

RIB 1

AC

DC

 

 

 

DC

AC

DC

DC

480V DC

Battery Input

RIB 2 4.2.4Operation Modes Summary•Normal Mode OperationUPS Module 2•Battery Mode Operation

RIB 3 •Bypass Mode Operation•Maintenance Bypass Mode OperationUPS Module 3Manual background

RIB 4 Manual backgroundManual backgroundUPS Module 4Manual background

MIB

IOB 1

IOB 2

IOB 3

IOB 4

480V, 3W Output

LDB 1

User Supplied

Plug-In Output

Breakers

480V, 3W Output

LDB N

4.2.3Operating Principles Redundancy Paralleling

The parallel redundant system can noticeably improve system reliability. In normal condition, none of the UPS modules work at full load. That means that even if the load is increased, the system will not transfer to bypass. And when a UPS module shuts down due to any failure, the remaining UPS mod- ules can still power and protect the load. When redundancy is lost due to module failure or load increase, the parallel system will trigger an alarm.

4.2.4Operation Modes Summary

The parallel system also has operation modes such as normal, battery, bypass and maintenance bypass. All UPS modules in the parallel system operate in coordination.

Normal Mode Operation

The load is powered by the inverters of all the UPS modules in the system. If the frequency of bypass is within the synchronous range, the inverter will be synchronized with the bypass. Other- wise, the system will operate at nominal frequency.

Battery Mode Operation

The batteries of all UPS modules power the load through their inverters. The system operates at nominal frequency.

Bypass Mode Operation

The condition to transfer to bypass mode is essentially the same as that of single module system. The bypass of all the UPS modules powers the load.

Maintenance Bypass Mode Operation

The sequence to transfer to maintenance bypass mode is the same as for transferring a single- module system. The maintenance bypass switches should be switched on as synchronously as pos- sible. Thus the system can be repaired without interrupting the power supply to critical load. If ECO mode is selected, the double-conversion UPS operation is inhibited at most times for the pur- pose of saving energy. In this mode of operation, not unlike UPS of line-interactive or standby technology, the bypass is the preferred source. Only when the voltage and/or frequency of the bypass supply is beyond pre-defined and adjustable limits is the critical AC load transferred to the inverter.

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Contents AC Power Liebert NX UPSUser Manual–40-200kVA, 480V,60Hz For Business-CriticalContinuityPage TABLE OF CONTENTS 4.0 OPTIONS 9.0 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIGURES Figure 39 Main component location drawing Liebert NX 480V, CB2, CB3, CB4 configurations . . . . . . . . . TABLES IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONSBattery Cabinet Precautions • Remove watches, rings and other metal objects Risk of electrical shock GLOSSARY OF SYMBOLSAC input AC output Requests the user to consult the manual1.1External Inspections 1.0INSTALLATION1.2Internal Inspections 1.2.1Storing for Delayed Installation1.3Preliminary Checks 1.4UPS Location1.5Considerations in Moving the Liebert NX Battery Location1.6Mechanical Considerations 1.4.3Special Considerations for Parallel Systems1.6.1Clearances 1.6.2Floor Installation1.6.3Cable Entry System CompositionFront of Units Liebert Battery CabinetLiebert NX Bypass2.0ELECTRICAL CONNECTIONS 2.1Power Cabling2.1.1Cable Rating Lug Size and Torque Requirements2.1.3Cabling Guidelines 2.1.2UPS Input ConfigurationLiebert NX 160-200kVAConnections Liebert NX 40-120kVAConnections2.1.4Cable Connections Figure 4 Input and output busbars2.1.7Cabling Procedure 2.1.5Safety Ground2.1.6Protective Devices UPS Rectifier and Bypass Input SupplyDual Input Connections Common Input ConnectionsFrequency Converter Mode 2.2Control Cables 2.2.1Monitor Board FeaturesFigure 5 Monitor board U2 2.3Dry Contacts Table 2 Maintenance bypass cabinet interface 2.3.2Maintenance Bypass Cabinet Interface2.3.1Input Dry Contacts Figure 7 Input dry contacts2.3.4Output Dry Contacts 2.3.3Battery Circuit Breaker Control InterfaceTable 3 BCB control interface Output dry contact relays2.3.5EPO Input—Optional Figure 9 EPO wiringEPO - NO EPO - NC3.0BATTERY INSTALLATION 3.2Safety3.1Introduction 3.3.1Battery Cabinets 3.3External Battery Cabinet InstallationFigure 10 Battery cabinets for Liebert NX 3.3.3Installation Considerations 3.3.2Connecting the BatteriesFigure 11 Battery cabinet—details Figure 12 Battery tray and supports 3.3.4Connecting the Battery Cabinet to the UPS3.4Non-StandardBatteries 3.5BCB Shunt Trip3.6Alber Monitoring System—Optional This power must be UPS protected4.1Load Bus Synchronization 4.1.2LBS Cable and Settings4.0OPTIONS 4.1.1Performance Requirements4.2.2Features of Parallel System 4.2Configuring Parallel System Operation4.2.1General Figure 15 Parallel system block diagram 480V, 3W Input 480V DC Battery InputLiebert NX UPS 40-200kVA 480V, 3W UOB Output•Maintenance Bypass Mode Operation •Battery Mode Operation4.2.3Operating Principles Redundancy Paralleling 4.2.4Operation Modes Summary4.3.2Cabinet Installation 4.3Installing Parallel System4.3.4Power Cables 4.3.1Conditions for Parallel SystemAuxiliary Dry Contact Cables For startup procedure, 9.2 - UPS StartupFigure 20 Connecting EPO push button 4.3.6Emergency Power Off EPOX2:3 X2:4Environmental characteristics 5.0UPS SPECIFICATIONSUPS mechanical characteristics Table 8 UPS terminal 5.4UPS Electrical Characteristics5.4.1Input Rectifier Table 9 Rectifier input powerUPS terminal continued Table 10 Input voltage window with derating5.4.2DC Intermediate Circuit Table 11 Liebert approved replacement batteries5.4.3Inverter Output Table 12 DC intermediate circuitTable 14 Bypass input 5.4.4 Bypass InputFront Left SideDetail A FrontParallel Board LEFT VIEW FRONT VIEW1239mm 2000mmBOTTOM VIEW Front of UPS TOP VIEW Front of UPSInstallation Drawings DETAIL A 224mm DETAIL A8.83 609.3 24 872.2 34.3 U3819205 FRONT RIGHT SIDESECTION A-A TOP VIEWTop View Detail ADetail B without BCB Cover PlateA D NX 160-200KVAUPS Module Front View A CBB D CD 49 Battery Cabinet Right-SideViewsExternal Battery Cabinet Top Right Side Front845 33.2 965 38 2000 78.7 Front Right SideRear FrontSystem Input UPS OutputWithout Covers UPS Output Breakers Ground Busbar FRONTSystem Kirk-KeyDoor Open FRONTREAR A B1-B4 FRONT Without Covers 78.7 in LEFT SIDE Without Exterior Panels 965 38 in 2000RIGHT SIDE Without Exterior Panels LEFT SIDE Isometric View7.0OPERATION 7.1General Description7.1.1Bypass Supplies Battery Mode7.1.2Operating Modes Normal ModeParallel Redundancy Mode System Expansion Maintenance Mode8.1.1Display Panel Layout 8.0OPERATOR CONTROL AND DISPLAY PANELFigure 45 Overview of control panel Liquid Crystal Display LCD Mimic display LED2Bypass indicator Figure 47 Mimic display indicators locationLoad indicator Inverter indicatorFigure 48 Location of control buttons Inverter Off button Fault Clear buttonButton cover EPO button Silence On/Off button Inverter On buttonFigure 49 Buzzer location Data and settingsFigure 50 Sections of the LCD UPS systemTable 17 Icons for navigation keys Figure 51 Menu tree 8.8LCD Menus and Data ItemsOperator Control and Display Panel Figure 52 Language selection 8.9Language SelectionFigure 53 Set date and time 8.10Current Date and TimeStatus CurrentMessages History Log records menuFigure 56 Default screen 8.12.2Default Screen8.12Types of LCD Screens 8.12.1Opening Display8.12.3UPS Help Screen Press any key back to main menu8.12.4Screen Saver Window Figure 57 Help screen8.13.5Battery Self-TestAborted, Condition Not Met 8.13.4 Battery Capacity Test Confirmation8.13Pop-UpWindows 8.13.3System Self-Test9.0OPERATING INSTRUCTIONS 9.1Liebert NX Operating ModesTable 20 UPS operating modes 9.2UPS Startup 9.2.1Startup Procedure9.1.1Circuit Breakers Figure 59 Circuit breakers•Close CB5 CB1, CB2, CB3 and CB5 are closed Switch from Bypass Mode to Normal Mode Switch from Normal Mode to Bypass Mode9.5Emergency Shutdown With EPO 9.4Auto Restart9.8Multi-ModuleSystem Procedures 9.7Battery Protection9.7.1Battery Undervoltage Pre-Warning 9.7.2Battery End-of-DischargeEOD Protection3.Close Input breaker CB1 9.10Parallel System Startup 9.9Commissioning a Parallel System10.1Communication and Other User Terminals 10.1.2Power Output10.0OPTIONS 10.1.1Analog Input Interface10.1.4Communication and Monitoring 10.1.5Configuring Baud RatesTable 21 Liebert NX communication options Figure 62 Liebert IntelliSlot Web card display Table 23 Relay card jumper configuration Table 22 Relay Card pin configurationRelay Card Figure 63 MultiPort 4 card pin assignment MultiPort 4 CardFigure 64 Dust filter replacement 10.2.1Remote Alarm Monitor10.2LBS Mode—LoadBus Synchronization 10.3Replacing Dust FiltersTable 24 Torque specifications 11.0SPECIFICATIONS AND TECHNICAL DATATable 25 Battery torque rating Specifications and Technical DataTable 27 Parallel system current table 11.3Cable size and tightening torques Specifications and Technical Data Table 37 Enersys battery run times in minutes 11.4Battery Run TimesTable 38 C&D Dynasty battery run times in minutes Specifications and Technical Data Table 39 UPS status messages APPENDIX A - UPS STATUS MESSAGESUPS Status Messages UPS Status Messages Table 39 UPS status messagesEvent Message Description / Suggested Action if anyUPS Status Messages Table 39 UPS status messagesUPS Status Messages Table 39 UPS status messagesUPS Status Messages Table 39 UPS status messagesUPS Status Messages Page Of Mission-CriticalData And Applications Ensuring The High AvailabilityTechnical Support/ Service reducedcapitalequipment andoperatingcosts
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60HZ, 480V specifications

The Emerson 40-120KVA UPS is a high-performing uninterruptible power supply designed to ensure the reliability and continuity of critical operations across various industries. This UPS operates at 480VAC and 60Hz, making it suitable for environments where high-power demands are common.

One of the standout features of this UPS system is its modular design, which allows for easy scalability. Organizations can expand their power capacity as their needs grow, making the Emerson 40-120KVA UPS a future-proof investment. The system operates with high efficiency, minimizing energy consumption and operational costs. This is vital for data centers and industrial applications where energy management is increasingly important.

The Emerson UPS incorporates advanced digital signal processing technology, delivering real-time monitoring and control. This enhances the overall performance and reliability of the system, providing seamless power protection against voltage fluctuations, surges, and interruptions. With a total harmonic distortion of less than 5%, the UPS ensures a clean and stable power output, preserving the integrity of sensitive electronic equipment.

Another noteworthy characteristic of the Emerson 40-120KVA is its redundancy features. The system supports N+1 redundancy, allowing for one extra module to ensure uninterrupted service in case of a failure. This design offers peace of mind for critical applications, ensuring that there is no single point of failure.

User-friendliness is also a significant aspect of the Emerson UPS. The intuitive graphical user interface simplifies monitoring and management, allowing operators to assess system performance and status at a glance. Additionally, remote monitoring capabilities enable real-time tracking of system health and performance from anywhere, providing flexibility and oversight for facility managers.

The Emerson 40-120KVA UPS also meets stringent safety and compliance standards, ensuring reliable operation in demanding environments. Its robust design is suitable for a variety of applications, including information technology, telecommunications, and industrial processes. Overall, the Emerson 40-120KVA UPS stands out as a reliable, efficient, and versatile solution for businesses aiming to safeguard their critical power supply against any disruption.