Instruction/ maintenance manual of the product NXL 250 Emerson
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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.
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.
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii FIGURES Figure 1 Cabinet arrangement—Liebert NXL, battery cabinets, maintenance bypass cabinet . . . . . . . . . . 5 Figure 2 External Interface Board connections layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
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.
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.
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.
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.
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.
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 neut.
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 ).
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.
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.
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.
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.
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.
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 .
Installation Drawings 15 Figure 6 Outline drawing, 300kV A Liebert NXL UPS.
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).
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.
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.
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 .
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.
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.
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 In.
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-ph.
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.
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.
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 / F.
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 256-30695-73.
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An important point after buying a device Emerson NXL 250 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Emerson NXL 250 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Emerson NXL 250 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Emerson NXL 250 you will learn all the available features of the product, as well as information on its operation. The information that you get Emerson NXL 250 will certainly help you make a decision on the purchase.
If you already are a holder of Emerson NXL 250, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Emerson NXL 250.
However, one of the most important roles played by the user manual is to help in solving problems with Emerson NXL 250. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Emerson NXL 250 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
