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.
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 per- sonnel.
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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.
(see Environmental Parameters in Table 10). The Liebert NXL UPS is cooled with the aid of internal fans. To permit air to enter and exit and pre- vent overheating or malfunctioning, do not cover the ventilation openings.
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 24in (610mm) between the top of the UPS and any over- head obstacles to permit adequate circulation of air coming out of the unit.
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 If the cabinets are to be bolted Liebert...
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 10 - Liebert NXL UPS specifications for overload capacity. Power Cables The UPS requires both power and control cabling.
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. See the back page of this manual for contact information.
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).
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...
Power Supply (304m) Remote Status Panel TB-3 Remote Status Panel TB-4 2.3.2 Analog Load Bus Synch Connection to Non-Liebert NXL Equipment Refer to Figures 29 through 31 for layouts. Table 5 UPS control contacts with analog LBS Terminal Designation From...
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UPS Electrical Installation Table 5 UPS control contacts with analog LBS (continued) Terminal Designation From Signal Name Wire Range/Max Length Analog LBS Signals from UPS LBS Transformer Box Assembly to LBS Box - System #2 TB27-7 TB3-4 SYNCH PH A TB27-8 TB3-5 SYNCH PH B...
UPS Electrical Installation 2.3.3 Multi-Module Communication Paralleling cables that connect the module to the system are connected to terminals P3101 and P3103 on the Inter-Module Communication (IMC) board (refer to 4.0 - Installation Drawings). Table 6 Parallel from UPS module Inter-Module Communication Board to other Inter-Module Communication Board in system Terminal Designation Wire Size/...
UPS Electrical Installation Figure 6 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 2.3.4 Remote Input Breaker (RIB) For systems that use Remote Input Breakers (RIB), the controls for the Aux contacts, UVR, Motor Operator (optional) and voltage sense will go between the Remote breaker and the UPS Input I/O sec- tion.
UPS Electrical Installation RIB must be Listed UL 489 (Molded Case Circuit Breaker) or UL 1066 (Low Voltage AC Power Cir- cuit Breaker) that are required to be used in UL-listed switchgear or switchboards. The circuit breaker must have a short-time rating not exceeding 480 Volts at 150K Amperes, for 5 cycles. See Table 11 for required current ratings.
UPS Electrical Installation 2.3.5 Inverter Output Breaker (IOB) For systems that use Inverter Output Breakers (IOB), the controls for the Aux contacts, UVR, Motor Operator (optional) and voltage sense will go between the Remote breaker and the UPS Output I/O section.
UPS Electrical Installation Figure 9 Inter-Module Communication Board wiring diagram—Digital LBS P3108 P3108 P3108 02-806730-xx 02-806730-xx 02-806730-xx P3109 P3109 P3109 UPS 3 UPS 1 UPS 2 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.
UPS Electrical Installation 2.5.2 Three-Wire Input connections This configuration must NOT be used when single-phase loads are directly connected to the UPS. The UPS output transformer is considered a separately derived source. The UPS module neutral is bonded to the UPS ground, which is connected to a local grounding electrode in accordance with NEC 250-26.
The optional Module Battery Disconnect (MBD) can be used as a battery disconnect between a battery system and the Liebert NXL UPS. The battery cabinets are designed to be either attached to the UPS or battery cabinet or installed in a separate battery room (for details, see the Liebert NXL Battery Cabinet installation manual, SL-24530, available at Emerson Network Power’s Liebert Web site:...
Installation Drawings NSTALLATION RAWINGS Figure 10 Main components, 500kVA Liebert NXL 1+N multi-module or SMS with static bypass LIEBERT INTELLISLOT HOUSINGS INTER-MODULE COMMUNIC ATION BOARD, LOC ATED BEHIND HMI SCREEN HMI SCREEN KEYLOCK OR EMO BUT TON BACK FEED (OPTIONAL)
Installation Drawings Figure 11 Outline drawing, Liebert NXL 500kVA UPS 1+N multi-module or SMS with static bypass CONTRO L CABLE BYPASS/OUTPU T ENTRY/EXIT CABLE ENT RY/EXIT RECTIFIER / DC CABLE ENT RY 25.8" [654mm] 15.6" 10.6 [396mm] [269mm] 2.92" 69.8"...
Installation Drawings Figure 12 Output terminal details, Pg. 1, Liebert NXL 500kVA UPS 1+N multi-module or SMS with static bypass NOTES: 1. All dimensions are in inches (mm). Ø0.50 Ø0.50 1.75 1.75 2. Control wiring and power wiring must (13)
Installation Drawings Figure 14 Base drawing, Liebert NXL 500kVA UPS 1+N multi-module or SMS with static bypass REAR SEE A 21.0 21.0 12.1 13.9 13.9 12.1 33.3 [61] [535] [535] [307] [354] [354] [307] [56] [845] NOTES: RIGHT SIDE 1. All dimensions are in inches (mm).
Installation Drawings Figure 24 Input/output terminal detail, 750kVA Liebert NXL with static bypass (SMS or 1+N) continued NOTES: 1. ALL DIMENSIONS ARE IN inches (mm). 2. CONTROL WIRING AND POWER WIRING MUST BE RUN IN SEPARATE CONDUITS. 1.75 3. ALUMINUM AND COPPER-CLAD ALUMINUM CABLES ARE NOT RECOMMENDED.
Installation Drawings Figure 25 Shipping split 750kVA Liebert NXL without static bypass 531985GI 531988G2 531983G1 02-806704- 02-806707- Phase A 531985G2 02-806704- Hardware Phase B for Detail A Included 531985G3 in This Box 532061G1 02-806716- 02-806704- Phase C Part A (Rectifier) - Wire Starting Point...
Installation Drawings Figure 27 Shipping Split, 750kVA Liebert NXL with static bypass (SMS/1+N) continued 532049G1 532065G1 02-806710- 532063G1 02-806708- 532065G1 Fig12A-ShippingSplit750kVANXLwStaticBypass-SMS1plusNcontd PART A - WIRE FINISHING POINT. PART B - WIRE STARTING POINT. Low Voltage Wire Connections Between Parts B and A Wires are coiled and tied in Part B.
Installation Drawings Figure 28 Single-input wire cabinet Reference of Rectifier Corner Post See Detail A Remove upper and lower internal panels before attaching wire cabinet to UPS Reference of Wire Cabinet Corner Post See Detail A Wire Cabinet Rectifier Cabinet Corner Posts Corner Posts M10 Hardware...
Installation Drawings Figure 29 Control cable layout, UPS active analog load bus sync, 250-750kVA units CG #14A CG #14C ANALOG LBS BOX ANALOG LBS BOX Bypass Volts Phase A TB27-1 TB2-2 Bypass Volts Phase A TB3-1 TB27-1 Transformer V & I Bypass Volts Phase B V &...
Installation Drawings Figure 31 Control cable layout, UPS analog load bus sync, ELBS, 250-750kVA units CG #30A ANALOG LBS BOX TB27-1 TB2-2 Bypass Volts Phase A V & I TB27-2 TB2-5 Bypass Volts Phase B Transformer BOARD TB27-3 TB2-9 Bypass Volts Phase C TB27-4 TB3-4 Critical Bus Volts Phase A...
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