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Manual Emerson NXL 250

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  • Emerson NXL 250 - page 1

    AC P ow er For Business-Criti cal C on tinuity™ Li eber t ® NXL ™ Install ation M anual – 250-400kV A, 60Hz, Three Pha s e Single-Module ...

  • Emerson NXL 250 - page 2

    C ONT ACTING L IEBERT FOR S UPPORT To contact Liebert Services for information or repair service in the United States, call 1-800-LIEBERT (1-800-54 3-2378). Liebert Services offe rs a complete range of start-up services, repair services, preventive maintenanc e plans and service contracts. For repair or mainten ance service ou tside the 48 co ntigu ...

  • Emerson NXL 250 - page 3

    i T ABLE OF CONTENTS C ONT ACTI NG L IEBERT FOR S UPPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I NSIDE F RONT C OVER I MPORT ANT S AFE TY I NSTRUC TIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.0 S INGLE -M ODULE M ECHANICA L I NST ALLA TION . . . . . . . . . . . . . . ...

  • Emerson NXL 250 - page 4

    ii FIGURES Figure 1 Cabinet arrangement—Liebert NXL, battery cabinets, maintenance bypass cabinet . . . . . . . . . . 5 Figure 2 External Interface Board connections layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 3 Main components locatio n, 250kVA Liebert NXL UPS . . . . . . . . . . . . . . . ...

  • Emerson NXL 250 - page 5

    1 I MPORT ANT S AFETY I NSTRUCTIONS SA VE THESE INSTRUCTIONS This manual co ntains important ins tructions that should be followed during installation of your Liebert NXL ™ UPS.Read this ma nual thoroughly, paying spec ial attent ion to the sections that apply to your installation, befo re working with the UPS. Retain this manual for use by insta ...

  • Emerson NXL 250 - page 6

    2 NOTICE This unit complies with the limits for a Class A digital device, pursuant to Part 15 Subpart J of the FCC rules. These li mits provide reasona ble protection against ha rmful interference in a commercial environment. This unit generates, uses and radiates radio frequency energy and, if not installed and used in accordance with this instruc ...

  • Emerson NXL 250 - page 7

    Single-Module Mechanic al Installation 3 1.0 S INGLE -M ODULE M ECHANICAL I NST ALLATION 1.1 Introduction This following se ction describes the requiremen ts th at must be taken into account when p lanning the positioning and cabling of the Liebert NXL uni nterruptible power supply and relat ed equipment. This chapter is a guide to general procedur ...

  • Emerson NXL 250 - page 8

    Single-Module Mechanic al Installation 4 1.3.2 Storage Should the equipment not be installed immed iately, it must be stored in a room for protection ag ainst excessive humidity and or heat sources (see Environmental Parameters in Table 6 ). 1.4 Positioning The cabinet is structurally desi gned to handle lifting fr om the base. Access to the power ...

  • Emerson NXL 250 - page 9

    Single-Module Mechanic al Installation 5 1.6 Cable Entry Cables can enter the UPS cab inet from bottom or t o p into the Input/Output (I/O) section of the unit, see the figure s in 4.0 - Installation Drawings . Figure 1 Cabinet arrangement —Liebert NXL, battery cabinet s, maintenance byp ass cabinet Note: If a m aintenance bypass cabi net is used ...

  • Emerson NXL 250 - page 10

    UPS Electrical Installation 6 2.0 UPS E LECTRICAL I NST ALLATION This chapter provid es guidelines fo r qualified install ers who must have knowledge of local wiring practices pertaining to the equipment to be installed. 2.1 External Protective Devices For safety, it is necessary to install circuit breake rs in the input AC supply and external batt ...

  • Emerson NXL 250 - page 11

    UPS Electrical Installation 7 The following are guidelines only and superseded by local regulations and codes of practice where applicable: • Take special care when determin ing the size of the neutral cable (grounded conductor), because current circulating on the neutra l cable may be greater than nomi nal current in the case of non- linear load ...

  • Emerson NXL 250 - page 12

    UPS Electrical Installation 8 Bottom Cable Entry When making the power connections for bottom cable entry, the recomme nded order of pull- ing and installi ng cables is to start from the bottom connections to the top connections. The cables must be routed around the fault braces (see Detail in Figure 9 ). This is to prevent the cables from contacti ...

  • Emerson NXL 250 - page 13

    UPS Electrical Installation 9 2.3.1 Dry Cont act s Volt-free and isolated contacts are used for interf acing to customer connections external to the NXL unit. These circuits use at least 8mA of current at +24V. EPO Input Dry Cont act Control St atus Inpu t s Dry Cont act The following inputs can sense either a no rmally open or normally closed cont ...

  • Emerson NXL 250 - page 14

    UPS Electrical Installation 10 Switch Auxiliary Input s Dry Cont acts Control St atus Output Dry Cont acts Status signals are outputs through volt-free, normally open and norm ally closed contacts. 2.3.2 Load Bus Synch Connection T able 3 Circuit breaker or sw itch auxiliary contact Input s Item Terminal Block Pin Connects to (description of extern ...

  • Emerson NXL 250 - page 15

    Optional Equipme nt 11 3.0 O PTIONAL E QUIPMENT 3.1 Single-Module System Options 3.1.1 Matching Maintenance Byp ass Cabinet A matching Liebert NXL Main tenance Bypass cabinet is available. See Maintenance Bypass Ca binet Installation Manua l (SL-24532) for more d etails. 3.1.2 Battery T emperature Sensor The optional external battery temp erature s ...

  • Emerson NXL 250 - page 16

    Installation Drawings 12 4.0 I NST ALLATION D RAWINGS Figure 3 Main component s location, 250kV A Liebert NXL UPS HMI Scr ee n EMO But ton (optional) Lieb ert Inte llislot Bay s ® Custo mer Interface Boa rd Main Input Circuit Breaker (C B1) Module Output Circ uit Break er (CB2) Backfeed Breaker (BFB ) Option B ox (6 sl ots avai lable ) Input/Outpu ...

  • Emerson NXL 250 - page 17

    Installation Drawings 13 Figure 4 Outline drawing, 250kV A Liebert NXL UPS 71.8" (1823mm) 34.8" (884mm) 33.5" (850mm) 76.8" (1950mm) 17.6" (448mm) 56.8" (1443mm) 8.5 (2 16) 8.5 ( 216) 26.1 (664mm) 27" (685mm) 9.8" (2 50) 9.8" ( 250) 9.8" (2 50) 9.8" (2 50) 3.1" ( 80) ( ty p) 4.5 (1 1 5) 4. ...

  • Emerson NXL 250 - page 18

    Installation Drawings 14 Figure 5 Main component s location, 300kV A Liebert NXL UPS HMI Scre en EMO Bu tt on (optional) Lieb ert Intellis lot Bays ® Cust ome r Interface Boa r d Main Input Circu it Break er (CB 1) Module Ou tput Circ uit Break er (CB2) Bac kf ee d Br e ak er (BFB) Option Box (6 slots available) Input/Ou tput Cabi net CB Interf ac ...

  • Emerson NXL 250 - page 19

    Installation Drawings 15 Figure 6 Outline drawing, 300kV A Liebert NXL UPS ...

  • Emerson NXL 250 - page 20

    Installation Drawings 16 Figure 7 Input/output conduit det ail dr a wing, 250-300kV A Liebert NXL UPS OUTP U T NEUTRA L INNER PANE L REMOVED FOR CLARIT Y SHO WN IN EXTE NDED POS IT IO N DC (2) 3" CONDUI T NOTES: 1. ALL D IM ENSI O NS AR E I N i nches (m m). 2. 24 " MINIMUM CL EA RANCE A BOV E UNIT REQUIRE D FOR AIR EXHA UST . 3. KE EP CAB ...

  • Emerson NXL 250 - page 21

    Installation Drawings 17 Figure 8 T op cable entry routing and inst allation order The cables must be rout ed around the fault braces. This is to prevent the cables from coming in cont act with other busbars. F AU L T BRACE OUTPU T F AU L T BRACE RECTIFIER INPU T F AU L T BRACE BYP ASS INPU T BYP ASS NEUT RA L DC (POSITIVE) DC ( NEG A TIVE) GROUND ...

  • Emerson NXL 250 - page 22

    Installation Drawings 18 Figure 9 Bottom cable entry routing and in st allation order SIDE VIEW F AU L T BRACE OUTPU T F AU L T BRACE RECT IFI ER INPU T F AU L T BRACE BYP ASS INPU T BYP ASS NEUT RA L DC (POSITIVE) DC ( NEG A TI VE) GROU ND ( T OP ENT RY ) BYP ASS INPU T RECTIFIER INPU T OUTPU T OUTPU T NEUTRA L GROUND (BOT T OM ENT RY) FRONT VIE W ...

  • Emerson NXL 250 - page 23

    Installation Drawings 19 Figure 10 Input/output terminal det ail, 400kV A Liebert NXL UPS NOTES: 1. ALL DI MEN SIO N S ARE I N inc hes (mm) . 2. 2 4" MI NI MUM CLEAR ANC E ABO VE U NI T REQ UI RED FO R AIR EXHA US T . 3. KE EP CAB IN ET WIT HI N 15 DEG R EES O F VERTI CAL . 4. T OP AN D BO TTO M C ABLE ENT R Y A V AILABLE T HRO UG H R EMOV ABL ...

  • Emerson NXL 250 - page 24

    Installation Drawings 20 Figure 1 1 Main component s, 40 0kV A Liebert NXL UPS HMI SCREEN MAIN INPU T CIRCUI T BREA KER (CB1) BACKFEED BREAKE R (BF B) EMO BUT TON OPTIONA L EXTERNA L INTER F ACE BOARD (EIB ) MODULE OUT PU T CIRCUI T B REAKER (CB2) OPTION BO X (6 SLO TS) FRON T DOORS REM OVED DOORS AND INNER SK INS REM OVED ...

  • Emerson NXL 250 - page 25

    Installation Drawings 21 Figure 12 Outline drawing, 400kV A Liebert NXL UPS 3.7 (9 5 ) 10.6 ( 269 ) 12.4 (3 1 6 ) 12.4 ( 316 ) 10.6 ( 269 ) 3.1 (8 0 ) TY P 32.9 (8 3 5 ) 39.4 ( 1000 ) 14.5 ( 368 ) 76.8 ( 1950 ) 29.5 ( 749 ) 25.8 ( 655 ) 78.5 ( 1995 ) FRON T ACCESS PLA TE ACCESS PLA T E CONDUI T LAND ING ARE A (NOTE 4) CONDUI T LAND ING AREA (NOTE4 ...

  • Emerson NXL 250 - page 26

    Installation Drawings 22 Figure 13 Ground strap location for connected ca binet s REFERENC E OF CORNER-PO ST OF CONNECTE D CABINETS Cabinet- to-Cabinet Bolting I nstruct ions T ypical Ground Str ap Installat ion FRONT SIDE OF UNITS ( Use for all connected units exc ept battery cabinet ) A Detail A ...

  • Emerson NXL 250 - page 27

    Specifications 23 5.0 S PECIFICATIONS T able 6 Liebert NXL UPS specif ications 250 300 400 Input Parameters Input Voltage to Rectifie r, VAC 480V 3-phase, 3-wire Input Voltage to Bypass, VAC 480V 3-phase, 3-wire or 4-wire Input Voltage Range, VAC +10% to -15 -15% to -20%* -20% to -30%** <-30%*** Input Frequency, Hz 60 Permissible Input Frequency ...

  • Emerson NXL 250 - page 28

    Specifications 24 Physical Parameters and Standards, in (mm) Width, With Side Panels 71.8 (1823) 78.5 (1993) 78.5 (1993) Depth 33.5 (850) 33.5 (850) 39.4 (1000) Height 76.8 (1950) Weight, Unpackaged, l b (kg) appr ox. 3965 (1798) 4690 (2127) 5250 (2381) Max heat Dissipation, Full Loa d, BTU/hr 49,877 58,819 75,676 Cooling Air CFM 4750 4750 7250 Col ...

  • Emerson NXL 250 - page 29

    Specifications 25 Notes on T ables 1. Nominal input current (considered continuous) is based on full -rated output load. Maxi mum current includes nominal input current and ma ximum battery recharge current (considered noncontinuous). Continuous and noncontinuous cu rrent are defined in nec 100. Maxi mum input current is controlled by the cu rrent ...

  • Emerson NXL 250 - page 30

    Specifications 26 T able 12 Recommended conduit and cable sizes Rectifier Input UPS Rat ing Voltag e (VAC) Nominal Selection Alternate Selection Top Cable Entry Input Wire & Condu it Ph, G THW / FMC Bottom Cable Entry Input Wire & Conduit Ph, G THW / RNC Top Cabl e Entry I nput Wire & Conduit Ph, G THW / FM C Bottom Cable Entry Input Wi ...

  • Emerson NXL 250 - page 31

    Specifications 27 T able 13 Recommended lug sizes Cable Size T&B Series 54000 One Hole T&B Series 54000 Two Hole #8 AWG 54930BE 54850BE #6 AWG 54905BE 256-30695-868 #4 AWG 54906BE 256-30695-733 #2-3 AWG 54942BE 54811BE #1 AWG 54947BE 54857BE #1/0 AWG 54950BE 256-30695-593 #2/0 AWG 54951BE 54862BE #3/0 AWG 54965BE 54864BE #4/0 AWG 54970BE 54 ...

  • Emerson NXL 250 - page 32

    EmersonNetworkPower.com Ensuring The Hi gh Av ai lab ilit y 0f Mission-Critic al Dat a And App lic ations. Emerson Net work P ower , the global leader in enabling business-critical continuity , ensures network resilienc y and adaptability through a family of technologies—inc luding Liebert power and cooling technologies—that prot ect and suppor ...

Manufacturer Emerson Category Power Supply

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All of them are important, but the most important information from the point of view of use of the device are in the user manual Emerson NXL 250.

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A complete manual for the device Emerson NXL 250, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Emerson NXL 250 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Emerson NXL 250.

A complete Emerson manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

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2. Contents - index of all tips concerning the Emerson NXL 250, that we can find in the current document
3. Tips how to use the basic functions of the device Emerson NXL 250 - which should help us in our first steps of using Emerson NXL 250
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5. FAQ - Frequently Asked Questions
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