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- Page 1 AC Power For Business-Critical Continuity™ Liebert ® ™ Installation Manual – 250-400kVA, 60Hz, Three-Phase, Single-Module...
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Page 2: Product Warranty Registration
For repair or maintenance service outside the 48 contiguous United States, contact Liebert Services, if available in your area. For areas not covered by Emerson Network Power Liebert Services, the authorized distributor is responsible for providing qualified, factory-authorized service. -
Page 3: Table Of Contents
Sizing the Input Breaker Feeding a Liebert NXL UPS ....... - Page 4 Figure 18 Input/output terminal detail, 400kVA Liebert NXL ....... . .
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Page 5: Support
NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that should be followed during installation of your Liebert NXL ™ UPS.Read this manual thoroughly, paying special attention to the sections that apply to your installation, before working with the UPS. Retain this manual for use by installing personnel. - Page 6 NOTE Materials sold hereunder cannot be used in the patient vicinity (e.g., use where UL, cUL or IEC 60601-1 is required). Medical applications such as invasive procedures and electrical life support equipment are subject to additional terms and conditions. NOTICE This unit complies with the limits for a Class A digital device, pursuant to Part 15 Subpart J of the FCC rules.
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Page 7: Single -Module Mechanical Installation
NOTICE Three-phase input supply required. The standard Liebert NXL UPS is suitable for connection to three-phase, four-wire (+ Earth) TN-C, TN-S, IT-G, IT-IG or, three-phase, three-wire plus ground, IT-UG. If using with IT Power system, a 4-pole disconnect device must be included as part of building installation. -
Page 8: Environmental Considerations
(see Environmental Parameters in Table 7). The Liebert NXL UPS is cooled with the aid of internal fans. To permit air to enter and exit and prevent overheating or malfunctioning, do not cover the ventilation openings. -
Page 9: Clearances
1.4.2 Clearances The Liebert NXL has no ventilation grilles at either side or at the rear of the UPS. Clearance around the front of the equipment should be sufficient to enable free passage of personnel with the doors fully opened. It is important to leave a distance of 24" (610mm) between the top of the UPS and any overhead obstacles to permit adequate circulation of air coming out of the unit. -
Page 10: System Composition
Cables can enter the UPS cabinet from bottom or top into the Input/Output (I/O) section of the unit, see the figures in 4.0 - Installation Drawings. Figure 1 Cabinet arrangement—Liebert NXL, battery cabinets, maintenance bypass cabinet The side panels and hangers must Liebert be removed before the cabinets can be bolted together. -
Page 11: Ups Electrical Installation
Given that every installation has its own characteristics, this section provides guidelines for qualified installation personnel with knowledge of operating practices, regulatory standards and the equipment to be installed. External overcurrent protection must be provided. See Table 7 - Liebert NXL UPS specifications for overload capacity. Dual Input When wiring the UPS with a separate rectifier and bypass input, each input must be protected separately. -
Page 12: Power Cables
This will prevent creation of excess EMI fields. 2.2.1 Sizing the Input Breaker Feeding a Liebert NXL UPS The rectifier nominal input current value (Table 8) is based on providing enough power to operate the inverter at full rated load when the input voltage is nominal. The published rectifier maximum input current value is based on the maximum input current limit setting of 125%. -
Page 13: Power Cable Connection Procedure
All operations described in this section must be performed by properly trained and qualified electricians or technical personnel. If any difficulties are encountered, contact Emerson Network Power Liebert Services. See the back page of this manual for contact information. The grounding and neutral bonding arrangement must be in accordance with local and national codes of practice. -
Page 14: Figure 2 Cabinet Grounding Plates
UPS Electrical Installation 5. For control connection details, see 2.3 - Control Cable and Communication. NOTE If fault bracing brackets were removed during installation, they MUST be replaced. 6. Close and secure the interior and exterior doors. Figure 2 Cabinet grounding plates Note location of larger cutouts. -
Page 15: Control Cable And Communication
UPS Electrical Installation Control Cable and Communication Based on your site’s specific needs, the UPS may require auxiliary connections to manage the battery system (external battery circuit breaker), communicate with a personal computer or provide alarm signaling to external devices, or for Remote Emergency Power Off (REPO). The External Interface Board, arranged for this purpose, is next to the option box in the Rectifier section (refer to 4.0 - Installation Drawings). -
Page 16: Dry Contacts
UPS Electrical Installation 2.3.1 Dry Contacts NOTE If connection to more than one module is required, use a separate contact for each module. Table 1 UPS input dry contacts Terminal Connects to Wire Size/ Item Block (Description of External Item) Max Length REPO Switch, normally open contact Remote EPO... -
Page 17: Multi-Module Communication
UPS Electrical Installation Table 4 UPS control contacts to remote status panel Terminal Connects to Wire Size/ Item Block (Description of External Item) Max Length Remote Status Panel TB-2 Remote Status Panel TB-1 CAN Bus and 24V 18 AWG/1000ft. TB0829 Power Supply (300m) Remote Status Panel TB-3... -
Page 18: Digital Lbs
UPS Electrical Installation Figure 5 Inter-Module Communication Board wiring diagram—Multi-modules P3103 P3103 P3103 02-806730-xx 02-806730-xx 02-806730-xx P3101 P3101 P3101 UPS 3 UPS 1 UPS 2 Digital LBS The Load Bus Sync interface enables independent UPS units to remain in sync when operating on battery or when supplied by unsynchronized input sources. -
Page 19: Configuring Neutral And Ground Connections
UPS Electrical Installation Configuring Neutral and Ground Connections Improper grounding is the largest single cause of UPS installation and startup problems. Grounding techniques vary significantly from site to site, depending on several factors. Proper grounding should be based on NEC Section 250, but safe and proper equipment operation requires further enhancements. -
Page 20: Preferred Grounding Configuration, Battery Systems
2.5.5 High Resistance Ground Systems The Liebert NXL is compatible with High Resistance Ground Systems. See your local Emerson representative for details. Grounding Diagrams, Single- and Multi-Module Systems Figure 7... -
Page 21: Figure 8 Grounding Diagram, Four-Wire Single-Module System
UPS Electrical Installation Figure 8 Grounding diagram, four-wire single-module system Source BPSS Figure 9 Grounding diagram, three-wire multi-module system Switchgear UPS #1 Source UPS #2 UPS #3 Grounding for 1+N systems is wired exactly the same. -
Page 22: Figure 10 Grounding Diagram, Foure-Wire Multi-Module System
UPS Electrical Installation Figure 10 Grounding diagram, foure-wire multi-module system UPS #1 Switchgear BPSS Source UPS #2 BPSS UPS #3 BPSS... -
Page 23: Optional Equipment
SL-24530, available at Liebert’s Web site www.liebert.com). 3.1.5 Load Bus Synch An optional Load Bus Synch (LBS) system can be used to synchronize two Liebert NXL UPSs or an Liebert NXL UPS to a Liebert Series 610 UPS. 3.1.6 Remote Alarm Panel The remote alarm panel has LED alarm lights. -
Page 24: Installation Drawings
Installation Drawings NSTALLATION RAWINGS Figure 11 Main components location, 250kVA Liebert NXL N+1 multi-module unit without static bypass EMO Button HMI Screen (optional) Liebert ® IntelliSlot Bays Customer Interface Board Main Input Circuit Module Output Breaker (CB1) Circuit Breaker (CB2) -
Page 25: Figure 12 Outline Drawing, 250Kva Liebert Nxl N+1 Multi-Module Unit Without Static Bypass
Installation Drawings Figure 12 Outline drawing, 250kVA Liebert NXL N+1 multi-module unit without static bypass 33.5" (850mm) 71.8" (1823mm) 76.8" (1950mm) 34.8" (884mm) 17.6" (448mm) 26.1 (664mm) 4.7 (120) (typ.) 56.8" (115) (216) (216) (216) (210) (1443mm) 27" (685mm) Top View (Doors Open) 9.8"... -
Page 26: Figure 13 Main Components Location, 300Kva Liebert Nxl N+1 Multi-Module Unit Without Static
Installation Drawings Figure 13 Main components location, 300kVA Liebert NXL N+1 multi-module unit without static bypass EMO Button Liebert (optional) HMI Screen ® IntelliSlot Bays Customer Interface Board Main Input Module Output Circuit Circuit Breaker (CB2) Breaker (CB1) Backfeed Breaker... -
Page 27: Figure 14 Outline Drawing, 300Kva Liebert Nxl N+1 Multi-Module Unit Without Static Bypass
Installation Drawings Figure 14 Outline drawing, 300kVA Liebert NXL N+1 multi-module unit without static bypass 16.5" (418mm) 78.5" (1993mm) 76.8" (1950mm) 30.3" (770mm) 29.9" 33.4" (759mm) (849mm) 4.7" (120mm TYP) 4.5" (253) (253) (253) (253) (115mm) 63.8" 27.0" (1620) (685mm) Top View 11.5... -
Page 28: Figure 15 Input/Output Conduit Detail Drawing, 250-300Kva Liebert Nxl N+1 Multi-Module Unit
Installation Drawings Figure 15 Input/output conduit detail drawing, 250-300kVA Liebert NXL N+1 multi-module unit without static bypass O .56 Output (14) .87 ( 22) (2) 3" Conduit (2) 3.5" Conduit Bypass Input ( 25) (2) 3.5" Conduit (2) 3" Conduit... -
Page 29: Figure 16 Top Cable Entry Routing And Installation Order
Installation Drawings Figure 16 Top cable entry routing and installation order Output Conduit Input Conduit Bypass Conduit DC Conduit DC (Positive) DC (Positive) DC (Negative) DC (Negative) Ground (Top Entry) Bypass Neutral Bypass Bypass Input Neutral (Phase C) Fault Brace Fault Brace Bypass Input Bypass Input... -
Page 30: Figure 17 Bottom Cable Entry Routing And Installation Order
Installation Drawings Figure 17 Bottom cable entry routing and installation order DC (Positive) DC (Negative) DC (Positive) Ground (Top Entry) DC (Negative) Bypass Neutral Bypass Neutral Fault Brace Bypass Input Fault Brace Bypass Input (Phase C) Bypass Input Bypass Input Fault Brace Rectifier Fault Brace... -
Page 31: Figure 18 Input/Output Terminal Detail, 400Kva Liebert Nxl
Installation Drawings Figure 18 Input/output terminal detail, 400kVA Liebert NXL OUTPUT .87 (22) (2) 3" CONDUIT (2) 3.5" CONDUIT (14)Typ. .98 (25) BYPASS INPUT (2) 3.5" CONDUIT (2) 3" CONDUIT INPUT BYPASS 1.75 (44) (2) 3" CONDUIT (2) 3.5" CONDUIT Typ. -
Page 32: Figure 19 Main Components, 400Kva Liebert Nxl N+1 Multi-Module Unit Without Static Bypass
Installation Drawings Figure 19 Main components, 400kVA Liebert NXL N+1 multi-module unit without static bypass EMO BUTTON OPTIONAL HMI SCREEN EXTERNAL INTERFACE BOARD (EIB) MAIN INPUT MODULE OUTPU T BACKFEED CIRCUIT BREAKER (CB1) CIRCUIT BREAKER (CB2) BREAKER (BFB) FRONT DOORS REMOVED... -
Page 33: Figure 20 Outline Drawing, 400Kva Liebert Nxl N+1 Multi-Module Unit Without Static Bypass
Installation Drawings Figure 20 Outline drawing, 400kVA Liebert NXL N+1 multi-module unit without static bypass 39.4 78.5 (1995) (1000) 76.8 (1950) 25.8 (655) 14.5 29.5 ( 368) ( 749) RIGHT SIDE VIEW FRONT 10.6 12.4 12.4 10.6 (95) (269) (316) -
Page 34: Figure 21 Single-Input Busbar Arrangement
Installation Drawings Figure 21 Single-input busbar arrangement 3 Places Isometric View 250, 300 and 450kVA Units Not all parts shown for clarity Figure 22 Low-voltage cable entry FLIP PLATES INSTALL REMOVE PLATES Low-voltage cables can be install through the top of each unit. The entry conduit landing plate is shipped inverted. To install, remove conduit plate, flip and reinstall. -
Page 35: Specifications
Specifications PECIFICATIONS Table 7 Liebert NXL UPS specifications Input Parameters Input Voltage to Rectifier, VAC 480V 3-phase, 3-wire Input Voltage to Bypass, VAC 480V 3-phase, 3-wire or 4-wire +10% to -15 -15% to -20%* Input Voltage Range, VAC -20% to -30%** <-30%***... -
Page 36: Table 7
Specifications Table 7 Liebert NXL UPS specifications (continued) 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, Unpacked, lb. (kg) approx. -
Page 37: Table 8 Current Ratings-Bypass Input
3. For units with an input transformer, the Rectifier Input Feed Breaker must be set to handle the Liebert NXL transformer inrush of up to eight times the nominal current. 4. For breaker coordination while the module is overloaded, see the current-versus-time values on the overload curves, Figures 23 and 24. -
Page 38: Table 12 Recommended Conduit And Cable Sizes
Specifications Table 12 Recommended conduit and cable sizes Rectifier Input UPS Rating Voltage, VAC Nominal Selection Input Bypass Output (#) Conduit Size, Ph, G (2) 2.5C 3-250kcmil, #1/0AWG (2) 3C 3-350kcmil, #1/0AWG (2) 3.5C 3-500kcmil, #1/0AWG Bypass Input UPS Rating Voltage, VAC Nominal Selection Input... -
Page 39: Figure 23 Inverter Overload Data
Specifications Figure 23 Inverter overload data... -
Page 40: Figure 24 Bypass Overload Data
Specifications Figure 24 Bypass overload data... -
Page 41: Table 13 Recommended Lug Sizes
Specifications Table 13 Recommended lug sizes T&B Series 54000 T&B Series 54000 Cable Size One Hole 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... - Page 42 Specifications...
- Page 44 +39 049 9719 111 Fax: +39 049 5841 257 While every precaution has been taken to ensure the accuracy and completeness of this literature, Liebert Corporation assumes no Asia responsibility and disclaims all liability for damages resulting from use of 29/F, The Orient Square Building this information or for any errors or omissions.
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