Emerson 208V Configuring Parallel System Operation, General, Features of Parallel System

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5.2Configuring Parallel System Operation

5.2.1General

The NX uses intelligent and reliable decentralized technology to achieve parallel operation of two or more modules of the same rating.

The 1+N system is used to:

•Increase the reliability of the system to ensure adequate power supply to the critical load con- nected.

•Increase serviceability and allow the execution of maintenance operations and reparations with- out affecting the ordinary operating conditions of the system (depending on the redundancy level).

5.2.2Features of Parallel System

•The hardware and firmware for parallel UPS module operation is standard in the NX, and the configuration can be set up by changing the settings in configuration software.

•It is easy to install the parallel cables in a ring, providing high reliability and redundancy. And the intelligent paralleling logic provides the user with maximum flexibility. For example, shut- ting down or starting up the UPS modules in the parallel system can be done in any sequence. If an overload transfer occurs, the whole system can recover automatically from bypass mode after the overload is cleared.

•The total load of the parallel system can be queried from each module’s liquid crystal display screen.

Figure 22 1+N system block diagram

Supplied

N

by Others

 

Input Mains

Supply A B C

UPS 1

CB 1

Rectifier

N

Input Mains

Supply A B C

UPS 2

CB 1

Rectifier

SW1-C

SW1-C

Fuse

 

1

 

Battery

Charger

 

Static

Switch

Inverter

SW1-A

 

Fuse

 

D-SW1

2

 

Battery

Charger

 

 

Static

Switch

Inverter

SW1-A

SW1-D

A B C

Q1Ext

QUPS

A B C

Q2Ext

Paralleling Cabinet

QByp

To Load

31

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Contents Liebert NX UPS Page Table of Contents UPS Specifications Maintenance Bypass CabinetOptions Figures Tables Important Safety Instructions Battery Cabinet Precautions Glossary of Symbols Internal Inspections External InspectionsUPS Location Preliminary ChecksMechanical Considerations Considerations in Moving the NXSpecial Considerations for 1+N Systems Final PositionClearances Floor InstallationCable Entry 10-30kVA UPSBattery Maintenance Bypass CabinetLiebert Optional CabinetsCable Rating Power CablingLug Size and Torque Requirements Cabling Guidelines UPS Input ConfigurationBussmann Cable ConnectionsProtective Devices Safety GroundUPS Rectifier and Bypass Input Supply System OutputOutput System Connections-Ensure Correct Phase Rotation Cabling ProcedureCommon Input Connections Dual Input ConnectionsMonitor Board Features Internal UPS Battery ConnectionsControl Cables Input Dry Contacts Dry ContactsMaintenance bypass cabinet interface Maintenance Bypass Cabinet InterfaceBCB Box Interface BCB box interfaceEPO Input-Optional Firmware Before M200 Output Dry ContactsOutput dry contact relays EPO input contact relaysFirmware M200 or Later Introduction SafetyUPS Batteries Matching Battery Cabinets External Battery Cabinet InstallationConnecting the Batteries Removable retainer Tray handle Insulated post for cablingBattery tray support Service shelf Top cable entry Battery trays BCB plate and BCBTop cable entry Batteries BCB plate Installation Considerations To interior surface of NX Battery tray supports attachFront door note notched Ends of supportsNon-Standard Batteries Connecting the Battery Cabinet to the UPSNormal UPS Mode Bypass SwitchMaintenance Mode Bypass ModeCable Installation Locating the CabinetInput/Output Wiring Power Cable InstallationMaintenance bypass control wire location Line up cabinets so that mounting holes are aligned Bolting Cabinets TogetherLoad Bus Synchronization DBS Cable and SettingsPerformance Requirements LBS CableFeatures of Parallel System Configuring Parallel System OperationGeneral Installing Parallel System Interconnecting Power CablesParallel Control Cables Parallel System Control Cables Auxiliary Dry Contact CablesInput Distribution Normally Closed EPO Normally Open EPOAvailable battery circuit breaker boxes Battery Circuit Breaker BoxDimensions Circuit BreakerBottom View Front ViewMidpoint Busbar Detail DPN U3813078 Rev. N Environmental characteristics UPS Mechanical CharacteristicsMechanical characteristics Conformity and StandardsUPS terminal UPS Electrical CharacteristicsInput Rectifier Battery Manufacturers and ModelsDC Intermediate Circuit Inverter output Inverter OutputBypass Input Bypass input Time LoadInstallation Drawings Main components-typical unit Dimensions -top and bottom viewsCable connections Location of internal batteries Battery 417mm 186mm 687mmW504 to W505 W511 to W510 W507 to W506 W509 to W508 W501 3pcs W500 18pcs W506 to W507 W510 to W511 W502 to W503W505 to W504 W508 to W509 W503 to W502Refer to for key to interconnection Liebert -supplied interconnect wiringRun From Conductors Maintenance Bypass interconnection Run From Conductors Cabinet Type Liebert-supplied interconnect wiringA00, BR0 Isolated Ground Distribution CabinetDistribution Cabinet Load AC Connection Neutral Ground Interconnect wiring-1+N Type a connection to NX Interconnect wiring-1+N Type A1 connection to NX Utility AC Source UPS #1-UPS #4 Module AC Input Interconnect wiring-1+N Type B connection to NXInterconnect wiring-1+N Type B1 connection to NX Ph A, B, C-system Input Interconnect wiring-1+N Type C connection to NXPh a ,B, C UPS Input Ph a ,B, C Load+ N Cabinet Side View + N Parallel Cabinet Interconnect wiring-1+N Type C1 connection to NXLineup detail-1+N Type D connection to NX Interconnect wiring-1+N Type D connection to NXUPS Battery torque rating Torque specificationsInitial Torque Annual Torque Battery In-lb N-m Lug Size and Torque RequirementsCurrent CB Size a Maintenance bypass cabinet electrical data single inputCurrent Rating a OCP CB Size a Current Rating a CB Size a Maintenance bypass cabinet electrical data dual inputMulti-module bypass cabinet electrical data 300A 200ASR0, W00 G01, GR1 E00, FR0TR0 208 104 125 250 400 UR0, Y00 MR1208 280 400 222 300 210 250 167 225 140 175 111 150 Maintenance bypass cabinet lug sizes Maintenance Bypass Cabinet weights Battery cabinet physical characteristicsMaintenance Bypass Cabinet Style, lb. kg Rating Multi-module paralleling cabinet dimensions Maintenance bypass cabinet dimensionsCable Lengths Floor to Connection Point Inside UPS Distance to connection points on the NX UPSSpecifications and Technical Data Specifications and Technical Data Page Iti Ne tTi n That
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10-30kVA, 208V specifications

The Emerson 10-30 kVA, 208V uninterruptible power supply (UPS) solution is a robust system designed to provide reliable power protection for critical applications in commercial and industrial settings. This UPS is ideal for safeguarding IT equipment, communication systems, and other sensitive electronics against power disturbances and interruptions.

One of the standout features of the Emerson 10-30 kVA UPS is its modular design, allowing for flexibility and scalability. This means that as the power needs of a facility grow, the UPS can be easily expanded without requiring a complete system overhaul. This modularity contributes to a more efficient use of resources and minimizes operational costs.

The UPS also incorporates advanced technologies such as double-conversion online architecture, which provides the highest level of power quality. This technology ensures that the output power is consistently clean and stable, effectively eliminating harmful voltage fluctuations and frequency variations. Consequently, connected load receives a pure sine wave output, preventing potential damage or operational issues with sensitive equipment.

Another key feature is the high efficiency rating of the Emerson UPS, which exceeds 95 percent in typical operating conditions. This high efficiency translates to reduced energy costs and a smaller carbon footprint, aligning with modern sustainability goals. The cooling system is designed to be efficient as well, ensuring optimal performance while maintaining a compact footprint.

The user-friendly interface enhances operability, featuring an intuitive LCD display that allows for easy monitoring of critical power parameters. Users can access real-time data related to battery health, load levels, and operational status, which aids in effective management of the power supply.

Battery management is another critical aspect of the Emerson UPS. It employs advanced battery management technologies to ensure optimal battery life and performance. Features such as intelligent battery testing and monitoring help predict potential battery failures before they occur, allowing for proactive maintenance and minimized downtime.

In summary, the Emerson 10-30 kVA, 208V UPS offers a combination of modularity, high efficiency, advanced technologies, and effective power management features that cater to the demanding needs of critical applications. With its reliable performance and user-friendly operation, this UPS solution is an excellent choice for organizations looking to protect their valuable equipment from power disturbances.
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