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Related Manuals for Liebert NX 10kVA
Summary of Contents for Liebert NX 10kVA
- Page 1 OWER VAILABILITY NX™ NSTALLATION ANUAL 10-30kVA 208V, 60Hz...
- Page 2 For repair or maintenance service outside the 48 contiguous United States, contact Liebert Global Services, if available in your area. For areas not covered by Liebert Global Services, the authorized distributor is responsible for providing qualified, factory-authorized service.
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Page 3: Table Of Contents
TABLE OF CONTENTS ......I ONTACTING IEBERT FOR UPPORT NSIDE RONT OVER . - Page 4 ..........20 ATTERY NSTALLATION Introduction .
- Page 5 Configuring Parallel System Operation ......... 34 5.2.1 General .
- Page 6 Liebert -supplied interconnect wiring ........
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Page 7: Important Safety Instructions
SAVE THESE INSTRUCTIONS This manual contains important instructions that should be followed during installation of your Liebert NX™ UPS and batteries. 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 8 • Battery cabinets contain non-spillable batteries. • Keep units upright. • Do not stack. • Do not tilt. Failure to heed this warning could result in smoke, fire or electric hazard. Call 1-800-LIEBERT before moving battery cabinets (after initial installation).
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Page 9: Glossary Of Symbols
LOSSARY OF YMBOLS Risk of electrical shock Indicates caution followed by important instructions AC input AC output Requests the user to consult the manual Indicates the unit contains a valve-regulated lead acid battery PbH2SO4 Recycle DC voltage Equipment grounding conductor Bonded to ground AC voltage... -
Page 10: Installation
NSTALLATION The Liebert NX™ UPS is designed primarily for telecommunications and data processing applica- tions. Liebert Corporation neither recommends nor knowingly sells this product for use with life sup- port and other designated “critical” devices. This section describes the NX’s environmental requirements and mechanical considerations that must be taken into account when planning the positioning and cabling of the UPS equipment. -
Page 11: Storing For Delayed Installation
Installation 1.2.1 Storing for Delayed Installation If the equipment will not be installed immediately, it must be stored indoors where the humidity is no higher than 90% and the temperature is no higher than 104°F (40°C). The storage area must protect the NX from excessive moisture (see 5.1 - Dual Bus Synchronizer). -
Page 12: System Composition
Installation 1.5.1 System Composition A UPS system can comprise a number of equipment cabinets, depending on the individual system design requirements—e.g., UPS cabinet and External Bypass cabinet. In general, all cabinets used will be the same height and are designed to be positioned side-by-side to form an aesthetically appeal- ing equipment suite. -
Page 13: Clearances
Leave a minimum of 2 ft. (610mm) between the top of the UPS and the ceiling to permit adequate air circulation above the unit. Liebert recommends against using air conditioning or other systems that blow air onto the top of the unit. -
Page 14: Optional Cabinets
Battery cabinets may be bolted to either side of the NX, unless used in configurations that include a Maintenance Bypass Cabinet; refer to 1.5.7 - Optional Cabinets. Figure 1 Cabinet arrangement ALL UNITS VIEWED FROM ABOVE Liebert Liebert Maintenance Maintenance Bypass... -
Page 15: Electrical
Electrical Connections LECTRICAL ONNECTIONS The UPS requires both power and control cabling once it has been mechanically installed. All control cables must run separate from power cables in metal conduits or metal ducts that are electrically bonded to the metalwork of the cabinets to which they are connected. WARNING Before connecting input power to the NX, ensure that you are aware of the location and operation of the overcurrent protection devices that connect the UPS input/bypass supply to... -
Page 16: Ups Input Configuration
Electrical Connections 2.1.2 UPS Input Configuration Figure 2 illustrates the NX in a split bypass (dual-input) configuration. In this configuration the Static Bypass and the Maintenance Bypass lines are supplied from a separate feed from the Main input. Both sources must be protected externally with properly sized protective devices. By default, the unit ships with internal links installed between the Bypass input and Main input (Single Input configuration). -
Page 17: Cable Connections
Electrical Connections 2.1.4 Cable Connections The rectifier input, bypass and output are accessible from the left side of the unit for installation. All require lug type terminations. They are connected to busbars on the left side of the NX and below the switch, as shown in Figure 3. -
Page 18: Safety Ground
Electrical Connections 2.1.5 Safety Ground The safety ground busbar is located below the neutral input and output busbars as shown in Figure 5 below. The safety ground cable must be connected to the ground busbar and bonded to each cabinet in the system. All cabinets and cable conduit should be grounded in accordance with local regulations. -
Page 19: Cabling Procedure
Cabling Procedure CAUTION The operations described in this section must be performed by authorized electricians or qualified technical personnel. If you have any difficulties, contact your local Liebert representative or Liebert Global Services. NOTE Hydraulic pressure pliers, combinative tools and piston ring pliers should be used to connect AC wiring. -
Page 20: Control Cables
Electrical Connections Control Cables 2.2.1 Monitor Board Features Based on your site’s specific needs, the UPS may require auxiliary connections to manage the battery system (external battery circuit breaker, battery temperature sensor), communicate with a personal computer or provide alarm signaling to external devices or for Remote Emergency Power Off (REPO). The monitor board, arranged for this purpose, is located on the rear of the operator access door. -
Page 21: Dry Contacts
Electrical Connections Dry Contacts The UPS provides input dry contacts and output dry contacts. 2.3.1 Input Dry Contacts There are several input dry contacts at the X3 slot. Figure 8 Input dry contacts Table 1 Input dry contacts at X3 Position Name Description... -
Page 22: Bcb Box Interface
Electrical Connections 2.3.3 BCB Box Interface J10 is the BCB box interface. Table 3 BCB box interface Position Name Description J10.1 BCB Driver Signal - Output (N.O.) J10.2 BCB Contact State - Input (N.O.) J10.3 Power Ground BCB On-Line - Input - This pin will become active when J10.4 BCB interface is connected. -
Page 23: Epo Input-Optional
Electrical Connections 2.3.5 EPO Input—Optional The UPS has an Emergency Power Off (EPO) function that operates by a button on the control panel and a dry contact. The EPO button is under a hinged, clear plastic shield. The X2 slot, shown in Figure 9, is the EPO input interface. It is active when shorted from EPO-L to EPO-H. - Page 24 Electrical Connections 3. Close CB1. The bypass contactor (M2) closes automatically and the LCD begins to show startup screens. The Rectifier indicator flashes green while the rectifier is starting up. It stops flashing and becomes solid green about 30 seconds after the rectifier enters the normal operation state. After initialization, the bypass static switch closes.
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Page 25: Switching The Ups From Normal To Maintenance Bypass
Electrical Connections Switching the UPS from Normal to Maintenance Bypass Follow the procedure below to transfer the load from the inverter output to the Maintenance Bypass line of the UPS. CAUTION Before performing this operation, read the messages on the LCD to be sure that bypass supply is regular and the inverter is synchronous with it. -
Page 26: Battery
ATTERY NSTALLATION Introduction Liebert recommends that the batteries in external cabinets match the internal batteries be the same type used internally in the NX. If using multiple sets of batteries connected in parallel to provide the required battery backup run times, fit each set with an isolating device to permit working on one of the battery sets while leaving the others in service and providing backup protection. -
Page 27: Battery Protection
Web site. When replacing batteries, Liebert recommends that the batteries in external cabinets be the same type used internally in the NX. See Table 10 for a list of batteries that are approved for use with this product. -
Page 28: Figure 10 Narrow Battery Cabinet, 27 In. (690Mm) - Rear View
Battery Installation Figure 10 Narrow battery cabinet, 27 in. (690mm) - rear view Top cable entry BCB plate and BCB Battery trays Bottom cable entry Figure 11 Wide battery cabinet, 57 in. (1488mm) - front view Top cable entry Batteries BCB plate and BCB Anderson... -
Page 29: Figure 12 Battery Cabinet-Details
Battery Installation Figure 12 Battery cabinet—details Removable retainer Tray handle Insulated post for cabling... -
Page 30: Matching Battery Cabinets
68 to 86°F (20-30°C). Position—Liebert battery cabinets come in versions specific to either the left or right side of the UPS. Control wires and power cables are cut to different lengths for the different versions. For sys- tems with multiple battery cabinets, the cabinets have different part numbers indicating placement of the cabinet relative to the UPS. -
Page 31: Connecting The Battery Cabinet To The Ups
Battery Installation Figure 13 Battery tray and supports ... and notched end of support Slot in support secured by screw-in slips into slot at top corner connector at corner of battery tray ... of battery compartment Battery tray supports attach to interior surface of NX front door 3.7.2 Connecting the Battery Cabinet to the UPS... -
Page 32: Non-Standard Batteries
Non-Standard Batteries When batteries other than a matching battery cabinet are used, a remote battery disconnect switch with overcurrent protection is required per the National Electrical Code. Contact your local Liebert sales representative about this option. Install battery racks, cabinets and batteries in accordance with the manufacturer's instructions. -
Page 33: Maintenance
Maintenance Bypass Cabinet AINTENANCE YPASS ABINET The Maintenance Bypass Cabinet is designed to operate in UPS mode, bypass mode and maintenance mode. The mode is selected using the Bypass Switch. Figure 14 Single UPS with external Maintenance Bypass Cabinet—typical configuration Bypass Switch The Bypass Switch allows easy and rapid transfer of connected loads between the UPS and Bypass source. -
Page 34: Bypass Mode
Maintenance Bypass Cabinet Bypass Mode When the Maintenance Bypass Cabinet is in the Bypass mode it provides an alternate path for power to the connected equipment. Should the UPS need to be taken out of service for limited maintenance or repair, manual activation of the bypass will cause an immediate transfer of the equipment from the UPS inverter to the bypass source. -
Page 35: Power Cable Installation
Maintenance Bypass Cabinet 4.6.2 Power Cable Installation Refer to Table 22 when selecting cables. NOTE Transient and steady state earth leakage currents may occur when starting the equipment. This should be taken into account when selecting ground current detection devices because these will carry the earth leakage currents of both the UPS equipment and the load. -
Page 36: Bolting Cabinets Together
Maintenance Bypass Cabinet Figure 17 Dry contact for X3 Dry contact for X3 Bolting Cabinets Together NOTE UPS wiring must be completed before the cabinets are bolted together. 1. Line up cabinets so that mounting holes are aligned. Place cabinets so mounting holes are aligned. -
Page 37: Operating Procedures
Maintenance Bypass Cabinet Operating Procedures 4.8.1 Startup and Initialization Follow these steps to startup the UPS while connected to the Maintenance Bypass. 1. Set Maintenance Bypass switch to the Normal position on Maintenance Bypass Cabinet. 2. Close the system input circuit breaker. 3. -
Page 38: Input And Output Transformer Voltages
Appendix Input and Output Transformer Voltages The UPS is able to display the primary voltage of the input transformer and the secondary voltage of the output transformer. 1. Using configuration software, enable the input transformer configuration. 2. Calculate the input-to-output voltage ratio and enter into software. Example: a step-down transformer from 480VAC to 208VAC is determined by dividing 480 by 208, which equals 2.31. -
Page 39: Options
For two parallel systems, the DBS cable can be mounted between any two units belonging to different parallel systems. For information about the DBS kit or to order the optional equipment, see your local Liebert representative. The DBS cable is connected as illustrated in Figure 18. -
Page 40: Configuring Parallel System Operation
5.2.3 Features of Parallel System • The hardware and firmware for parallel UPS module operation is standard in the Liebert NX, and the configuration can be set up by changing the settings in configuration software. • It is easy to install the parallel cables in a ring, providing high reliability and redundancy. And the intelligent paralleling logic provides the user with maximum flexibility. -
Page 41: Operating Principles
Options Figure 19 1+1 system block diagram SUPPLIED BY OTHERS INPUT MAINS INPUT MAINS SUPPLY A B C SUPPLY A B C UPS1 UPS2 RECTIFER RECTIFER SW1-C SW1-C FUSE FUSE STATIC STATIC SWITCH SWITCH CHARGER CHARGER BATTERY 1 BATTERY 2 INVERTER INVERTER SW1-D... -
Page 42: Intermodule Control
X2_3 connector of the second Liebert NX. • Connect one end of the DB-9 interconnecting cable the X1_1 connector of the first Liebert NX and the other end to the X1_2 connector of the second Liebert NX. -
Page 43: Commissioning A Parallel System
CAUTION The operations described in this section must be performed by authorized electricians or qualified technical personnel. If you have any difficult, do not hesitate to contact Liebert Global Service at 1-800-LIEBERT. Check the input and output wiring of each UPS module. Ensure that the phase rotation sequence of the main inputs and the bypass inputs and outputs of each UPS module are the same. -
Page 44: Parallel System Startup
Options Parallel System Startup 1. Start each UPS normally as described in the Liebert NX installation manual. SL-25215. 2. Turn on the inverter of each UPS module one at a time. 3. Apply the load after the last UPS module transfers to inverter. The total load can be determined through the LCD of either UPS. -
Page 45: Table 7 Available Battery Circuit Breaker Boxes
Options Two boxes are available depending on the UPS power rating. Table 7 Available battery circuit breaker boxes Dimensions (in) H-W-D Circuit Breaker 10-15 kVA 32.25x20.25x8.3 20-30 kVA 32.25x20.25x8.3 125A The weights listed above do not include package. The circuit breaker has the following features: •... -
Page 46: Figure 22 Battery Circuit Breaker Box Connections
Options Figure 22 Battery circuit breaker box connections CUSTOMER GROUND .38" 3.86" .25" STUD FOR 5.39" 5.39" 9.53mm 97.95mm 137mm 137mm 6GA - 2/0 WIRE NEUTRAL BUSBAR 3.98" 101.2mm 8.34" 211.72mm .50" 12.7mm CONDUIT ENTRY TOP & BOTTOM 20.24" 514.21mm 2.62"... -
Page 47: Specifications
Specifications PECIFICATIONS These specifications describe requirements for the Liebert NX Uninterruptible Power System (UPS). Conformity and Standards The UPS has been designed to conform to the following standards: • IEEC1000-4-5 • ASME • CSA 22.2, No. 107.1 • FCC Part 15, Class A •... -
Page 48: Ups Electrical Characteristics
UPS Electrical Characteristics 6.4.1 Battery Manufacturers and Models Either of two manufacturers’ batteries will be installed in the Liebert NX for 10-30 kVA 208V NX as shipped. Below are the battery makers and the models they supply. Table 10 Approved batteries... -
Page 49: Inverter Output
Specifications 6.4.4 Inverter Output Table 13 Inverter output Rated Power 10kVA 15kVA 20kVA 30kVA Rated voltage, VAC 120/208 Supply 3-phase, 4-wire plus ground Frequency, Hz 50 / 60 Rated Power, kVA Rated Power, kW 10 minutes - 105-125% load Three -phase transient overload, min. -
Page 50: Installation Drawings
Installation Drawings NSTALLATION RAWINGS The diagrams in this section illustrate the key mechanical and electrical characteristics of the NX UPS System cabinets. Figure 23 Dimensional view- front and left side views 10mm dia. threaded Monitoring mounting holes Panel Leveler 1600 Detail “A”... -
Page 51: Figure 24 Dimensions Continued-Top And Bottom Views
Installation Drawings Figure 24 Dimensions continued—top and bottom views 10mm dia. threaded mounting holes 4 (typ). See Notes 9 and 10 above. Rear stabilizing foot (optional) Air Intake Air Exhaust Power Cable Entry Area Top and Bottom TOP VIEW BOTTOM VIEW... -
Page 52: Figure 25 Main Components-Typical Unit
Installation Drawings Figure 25 Main components—typical unit Battery Start (optional) Fans in left side Monitor Board - U2 Parallel Logic Board - M3 POWER MODULE Fans Rotary Switch Surge Protection (optional) Batteries NOTES 1. Main components are shown in the drawing. 2. -
Page 53: Figure 26 Cable Connections
Installation Drawings Figure 26 Cable connections AC output cable connections Bypass AC input cable connections Input Neutral Bus (side view) Input/Output Output Neutral Bus Neutral (side view) Earth Power Earth (side view) Battery connections (+ N -) 4.1 to battery 4.2 to external battery cabinet NOTES 1. -
Page 54: Figure 27 Location Of Internal Batteries
Installation Drawings Figure 27 Location of internal batteries Battery 417mm 687mm... -
Page 55: Figure 28 Battery Connections
Installation Drawings Figure 28 Battery connections DYNASTY BATTERY TOP LAYER MIDDLE LAYER W501 3pcs W500 18pcs W510 to W511 W502 to W503 W503 to W502 W504 to W505 BOTTOM LAYER W511 to W510 W507 to W506 W509 to W508 CON4 W505 to W504 W508 to W509... -
Page 56: Figure 29 Electrical Connections
Installation Drawings Figure 29 Electrical connections TO CUSTOMERS SAFETY EARTH EARTH TO CRITICAL LOAD 200/208V SWITCH POWER CABLES INPUT SUPPLY 200/208V MONITOR BOARD INPUT X2 EXT EPO BATTERY BATT... -
Page 57: Figure 30 Battery Cabinet Interconnection
NOTES: 1. All Liebert-supplied cable must be repositioned prior to and while the cabinets are being placed in their final installed location. 2. All interconnection hardware supplied by Liebert 3. All interconnection cables supplied by Liebert when bolted together. -
Page 58: Figure 31 Maintenance Bypass Interconnection
NOTES 1. All Liebert-supplied cable must be repositioned prior to and while the cabinets are being placed in their final installed location. 2. All interconnection hardware supplied by Liebert. -
Page 59: Specifications And Technical Data
Specifications and Technical Data PECIFICATIONS AND ECHNICAL Lug Size and Torque Requirements Use commercially available solderless lugs for the wire size required for your application. Refer to Table 18. Connect wire to the lug using tools and procedures specified by the lug manufacturer. Table 18 Torque specifications Nut and Bolt CombinationS... -
Page 60: Table 20 Ups Terminal
Specifications and Technical Data Table 20 UPS terminal Bypass input (single or dual input unit) Maximum Recommended Lug Nominal Maximum Unit Input Input Device Lug T&B Lug T&B Rating Current Current Current Rating Bolt Size One Hole 54000 One Hole REDDY 6M (1/4”) 54105 62204... -
Page 61: Table 21 Maintenance Bypass Cabinet
Specifications and Technical Data Table 21 Maintenance Bypass Cabinet I/P Voltage Max Input Input OCP O/P Voltage Nominal O/P Output Type (VAC) Current CB Size (A) (VAC) Current Rating (A) OCP CB Size (A) A, J B, K B, K B, K C, L C, L... -
Page 62: Table 22 Maintenance Bypass Cabinet Lug Sizes
Specifications and Technical Data Table 22 Maintenance Bypass Cabinet lug sizes Input Maximum Recommended Lug Unit Nominal System OCP Device Lug T&B Lug T&B Rating Input Voltage Rating Bolt Size One Hole 54000 One Hole REDDY 6M (1/4”) 54105 62204 6M (1/4”) 54106 62204... -
Page 63: Cable Lengths: Floor To Connection Point Inside Ups
Specifications and Technical Data Table 23 Battery cabinet physical characteristics Battery Cabinet Dimensions Net Weight Without Type WxDxH in. (mm) Batteries, lb. (kg) 27.2x31.4x63 Short Narrow (690x825x1600) (250) 58.5x31.4x63 Short Wide (1488x825x1600) (400) Table 24 Maintenance Bypass Cabinet weights Maintenance Bypass Cabinet Style, lb. (kg) Rating 10kVA 408 (185) 545 (247) 675 (306) 602 (273) 732 (332) - Page 64 Specifications and Technical Data NOTES...
- Page 65 Specifications and Technical Data...
- Page 66 Specifications and Technical Data...
- Page 68 The Company Behind the Products Technical Support/Service Web Site With over a million installations around the globe, www.liebert.com Liebert is the world leader in computer protection Monitoring systems. Since its founding in 1965, Liebert has 800-222-5877 developed a complete range of support and monitoring@liebert.com...