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AC PowerFor Business-Critical ContinuityLiebert NX™ UPSInstallation Manual–10-30kVA, 208V, 60Hz

Installation41.0 INSTALLATIONThe Liebert NX™ UPS is designed primarily for telecommunications and data processing applica-tions. Liebert Corporation n

Installation51.2.1 Storing for Delayed InstallationIf the equipment will not be installed immediately, it must be stored indoors where the humidity is

Installation61.4.3 Special Considerations for 1+N Systems1. Consider the grounding configuration of your system before finalizing module placement. Fo

Installation71.6.1 ClearancesThere are no ventilation grilles on the sides or rear of the UPS. The sides must be accessible during installation. After

Installation81.6.4 Optional CabinetsIf your NX installation includes a Maintenance Bypass Cabinet, the NX must be positioned to allow the Maintenance

Electrical Connections92.0 ELECTRICAL CONNECTIONSThe UPS requires both power and control cabling once it has been mechanically installed. All control

Electrical Connections102.1.2 UPS Input ConfigurationFigure 2 illustrates the NX in a split bypass (dual-input) configuration. In this configuration t

Electrical Connections112.1.4 Cable ConnectionsThe rectifier input, bypass and output are easily accessible from the left side of the unit for install

Electrical Connections122.1.5 Safety GroundThe safety ground busbar is located below the neutral input and output busbars as shown in Figure 5 below.

Electrical Connections132.1.7 Cabling ProcedureOnce the equipment has been positioned and secured for operation, and the battery and ground col-lars h

Electrical Connections14Internal UPS Battery ConnectionsThe UPS internal batteries will be connected at the factory, EXCEPT the Anderson connections b

Electrical Connections15Figure 7 Auxiliary terminal block detail (Monitoring Board)2.3 Dry ContactsThe UPS provides input dry contacts and output dry

Electrical Connections162.3.2 Maintenance Bypass Cabinet InterfaceJ26 and J30 are the MBC interface.2.3.3 BCB Box InterfaceJ10 is the BCB box interfac

Electrical Connections172.3.4 Output Dry ContactsThere are three output dry contact relays at the X1 slot (see Figure 10 and Table 4).Figure 10 Output

Electrical Connections18Firmware M200 or LaterThe UPS has an Emergency Power Off (EPO) function operated by a button on the control panel or by a remo

Battery Installation193.0 BATTERY INSTALLATION3.1 IntroductionLiebert recommends that the batteries in external cabinets match the internal batteries

Battery Installation203.4 External Battery Cabinet Installation3.4.1 Matching Battery CabinetsTwo sizes of optional battery cabinets are available. Re

Battery Installation21Figure 13 Narrow battery cabinet, 27 in. (690mm) - rear view Figure 14 Wide battery cabinet, 57 in. (1488mm) - front viewBCB pla

Battery Installation223.4.3 Installation ConsiderationsPosition—Liebert battery cabinets come in versions specific to either the left or right side of

Battery Installation23Figure 15 Internal cable wiring from battery cabinet to Liebert NXFigure 16 Battery tray and supportsPower cables from batteries

iTABLE OF CONTENTSIMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1GLOSSA

Battery Installation243.4.4 Connecting the Battery Cabinet to the UPSAfter the battery cabinet equipment has been positioned and secured for operation

Maintenance Bypass Cabinet254.0 MAINTENANCE BYPASS CABINETThe Maintenance Bypass Cabinet is designed to operate in UPS mode, bypass mode and maintenan

Maintenance Bypass Cabinet264.3 Bypass ModeWhen the Maintenance Bypass Cabinet is in the Bypass mode, it provides an alternate path for power to the c

Maintenance Bypass Cabinet274.6.2 Power Cable InstallationRefer to Tables 29, 30 and 32 when selecting cables.4.6.3 Input/Output WiringFollow the step

Maintenance Bypass Cabinet287. Connect the system input cables between the Maintenance Bypass Cabinet 'UPS Input' Busbars (A-B-C N terminals

Maintenance Bypass Cabinet294.7 Bolting Cabinets Together1. Line up cabinets so that mounting holes are aligned.2. Using supplied hardware, bolt the c

Options305.0 OPTIONS5.1 Load Bus SynchronizationThe Load Bus Synchronizer (LBS) keeps the output of two independent UPS systems or parallel UPS system

Options315.2 Configuring Parallel System Operation5.2.1 GeneralThe NX uses intelligent and reliable decentralized technology to achieve parallel opera

Appendix325.2.3 Operating PrinciplesRedundancy ParallelingThe 1+N parallel redundant system can noticeably improve system reliability. In normal condi

Appendix335.3.5 Power CablesWiring of power cables is similar to that of single module system (See 2.1 - Power Cabling). The bypass sources of all mod

ii3.4 External Battery Cabinet Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203.4.1 Matching Bat

Appendix34Figure 24 Auxiliary dry contact cables for output breaker in multi-module systemFigure 25 Dry contacts, multiple UPS modules with distributi

Options355.3.7 Emergency Power Off (EPO)The external emergency stop facility is identical to that described for the single unit installation—that an i

Options365.4 Battery Circuit Breaker BoxThe box contains the same battery isolating circuit breaker as mounted in the battery cabinet.Two battery circ

Options37Figure 27 Battery circuit breaker box connectionsNOTE1. The signal cables in this figure must be shielded and double-insulated.2. Connect the

UPS Specifications386.0 UPS SPECIFICATIONSThese specifications describe requirements for the Liebert NX UPS.6.1 Conformity and StandardsThe UPS has be

UPS Specifications396.4 UPS Electrical CharacteristicsTable 10 UPS terminalInput (for single-input unit)UnitRatingNominalInputCurrentMaximumInputCurre

UPS Specifications406.4.1 Battery Manufacturers and ModelsEither of two manufacturers’ batteries will be installed in the NX 10-30 kVA 208V as shipped

UPS Specifications416.4.4 Inverter Output6.4.5 Bypass InputTable 14 Inverter outputRated Power 10kVA 15kVA 20kVA 30kVARated voltage, VAC 120/208Supply

Installation Drawings427.0 INSTALLATION DRAWINGSThe diagrams in this section illustrate the key mechanical and electrical characteristics of the NX UP

Installation Drawings43Figure 29 Dimensions continued—top and bottom views Figure 30 Main components—typical unitRear stabiliz-ing foot Air ExhaustPow

iii7.0 INSTALLATION DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .428.0 SPECIFICATIONS AND

Installation Drawings44Figure 31 Cable connectionsNOTES1. All dimensions are millimeters.2. Top and bottom cable entry available through removable acc

Installation Drawings45Figure 32 Location of internal batteriesBattery417mm687mm186mm

Installation Drawings46Figure 33 Battery connections +-+-+-+-+-+-+--++-+-+-+-+-+-+--++-+-+-+-+-+-+--+-N+W501 3pcsW500 18pcsW510 to W511 W502 to W503 W

Installation Drawings47Figure 34 Battery cabinet interconnectionTable 16 Liebert -supplied interconnect wiringRun From To ConductorsA UPS battery term

Installation Drawings48Figure 35 Maintenance Bypass interconnectionTable 17 Liebert-supplied interconnect wiring for Maintenance Bypass CabinetRun Fro

Installation Drawings49Figure 36 NX 1+1 parallel cabinet interconnectionsTable 18 Liebert-supplied interconnect wiringRun From To Conductors Cabinet T

Installation Drawings50Figure 37 Lineup detail—SlimLine distribution cabinet to NXTable 19 Liebert-supplied interconnect wiring—SlimLine distribution

Installation Drawings51Figure 38 Lineup detail—1+N Type A connection to NXTable 20 Interconnect wiring—1+N Type A connection to NXRUN FROM TO CONDUCTO

Installation Drawings52Figure 39 Lineup detail—1+N Type A1 connection to NXTable 21 Interconnect wiring—1+N Type A1 connection to NXRun From To Conduc

Installation Drawings53Figure 40 Lineup detail—1+N Type B connection to NXTable 22 Interconnect wiring—1+N Type B connection to NXRun From To Conduct

ivTABLESTable 1 Input dry contacts at X3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation Drawings54Figure 41 Lineup detail—1+N Type B1 connection to NXTable 23 Interconnect wiring—1+N Type B1 connection to NXRun From To Conduc

Installation Drawings55Figure 42 Lineup detail—1+N Type C connection to NXTable 24 Interconnect wiring—1+N Type C connection to NXRun From To Conduct

Installation Drawings56Figure 43 Lineup detail—1+N Type C1 connection to NXTable 25 Interconnect wiring—1+N Type C1 connection to NXRun From To Condu

Installation Drawings57Figure 44 Lineup detail—1+N Type D connection to NXTable 26 Interconnect wiring—1+N Type D connection to NXRun From To Conduct

Installation Drawings58Figure 45 SlimLine locationsBatteryMBC UPSSlimLineMBC UPSSlimLineUPS BatterySlimLineUPSSlimLineUPSSlimLine1 + NParallelingCabin

Specifications and Technical Data598.0 SPECIFICATIONS AND TECHNICAL DATA8.1 Lug Size and Torque RequirementsUse commercially available solderless lugs

Specifications and Technical Data60Table 29 Maintenance bypass cabinet electrical data (single input)kVA TypeMaintenanceBypassI/P Voltage(VAC)Bypass C

Specifications and Technical Data6115 D, M 240 47 60 208 42 6015 E, N 480 24 30 480 18 3015 E, N 600 19 30 600 14 2015 E, N 220 53 70 220 39 5010 A, J

Specifications and Technical Data6215 F, P 480 21 30 24 30 208 42 6015 F, P 600 17 30 19 20 208 42 6015 F, P 208 49 60 54 60 208 42 6015 F, P 220 46 6

Specifications and Technical Data632+0A00, BR030 208 104 125 208 167 22520 208 70 90 208 111 15015 208 53 70 208 83 12510 208 35 45 208 56 70CR1 30 20

1IMPORTANT SAFETY INSTRUCTIONSSAVE THESE INSTRUCTIONSThis manual contains important instructions that should be followed during installation of your L

Specifications and Technical Data642+1E00, FR030 208 104 125 208 167 22520 208 70 90 208 111 15015 208 53 70 208 83 12510 208 35 45 208 56 70G01, GR11

Specifications and Technical Data653+0E00, FR030 208 104 125 208 250 40020 208 70 90 208 167 22515 208 53 70 208 125 20010 208 35 45 208 83 125G01, GR

Specifications and Technical Data663+1J00, KR030 208 104 125 208 250 40020 208 70 90 208 167 22515 208 53 70 208 125 20010 208 35 45 208 83 125LR110 2

Specifications and Technical Data67 4+0J00, KR030 208 104 125 208 333 50020 208 70 90 208 222 30015 208 53 70 208 167 22510 208 35 45 208 111 150LR110

Specifications and Technical Data68Table 32 Maintenance bypass cabinet lug sizesInputUnitRatingNominal SystemInput Voltage Bolt SizeMaximum Recommende

Specifications and Technical Data69OutputUnitRatingNominal SystemOutput Voltage Bolt SizeMaximum Recommended LugLug T&BOne Hole 54000Lug T&BOn

Specifications and Technical Data708.2 Cable Lengths: Floor to Connection Point Inside UPSTo help calculate the total cable length required, refer to

Specifications and Technical Data71NOTES

Specifications and Technical Data72

2Battery Cabinet PrecautionsThe following warning applies to all battery cabinets supplied with UPS systems. Additional warn-ings and cautions applica

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3GLOSSARY OF SYMBOLSRisk of electrical shockIndicates caution followed by important instructionsAC inputAC outputRequests the user to consult the manu