AC Power For Business-Critical Continuity™ Liebert NX™ UPS User Manual–40-120kVA, 480V, 60Hz
TABLE OF CONTENTS IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 GLOSSARY OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 1.1 1.2 External Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 3.5 3.6 Non-Standard Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 BCB Shunt Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Alber Monitoring System—Optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.0 OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.10 8.11 8.12 Current Date and Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 UPS Status Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Types of LCD Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 8.12.1 8.12.2 8.12.3 8.12.4 8.13 Opening Display . . . . . . . . . . . . . . . . . . . . . .
11.0 SPECIFICATIONS AND TECHNICAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 11.1 11.2 11.3 11.4 Lug Size and Torque Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cable Lengths: Floor to Connection Point Inside UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cable size and tightening torques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 41 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Figure 47 Figure 48 Figure 49 Figure 50 Figure 51 Figure 52 Figure 53 Figure 54 Figure 55 Figure 56 Figure 57 Figure 58 Mimic display indicators location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Location of control buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Buzzer location . . . . . . . . . . . . . . . . . . . .
Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 Lead/Lag ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cable size tightening torque at Liebert NX 40kVA UPS terminals. . . . . . . . . . . . . . . . . . . . . . . . Cable size tightening torque at Liebert NX 60kVA UPS terminals. . . . . . . . . . . . . . . . . . . . . . . . Cable size tightening torque at Liebert NX 80kVA UPS terminals. . . . . .
IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that should be followed during installation of your Liebert NX™ UPS and ancillary equipment. 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. ! WARNING Exercise extreme care when handling UPS cabinets to avoid equipment damage or injury to personnel.
! ! WARNING Under typical operation and with all UPS doors closed, only normal safety precautions are necessary. The area around the UPS system should be kept free of puddles of water, excess moisture and debris. Special safety precautions are required for procedures involving handling, installation and maintenance of the UPS system and the batteries. Observe all safety precautions in this manual before handling or installing the UPS system.
GLOSSARY OF SYMBOLS Risk of electrical shock ! Indicates caution followed by important instructions AC input AC output i - Requests the user to consult the manual + Indicates the unit contains a valve-regulated lead acid battery PbH2SO4 R Recycle DC voltage Equipment grounding conductor Bonded to ground AC voltage 3
Installation 1.0 INSTALLATION Liebert’s NX Uninterruptible Power Supply system provides continuous, high-quality AC power to your business-critical equipment, such as telecommunications and data processing equipment. The Liebert NX UPS supplies power that is free of the disturbances and variations in voltage and frequency common to utility power, which is subject to brownouts, blackouts, surges and sags.
Installation 1.2 Internal Inspections 1. Remove any packaging material, then visually examine the UPS and battery equipment for transit damage, both internally and externally. Report any such damage to the shipper and to Liebert immediately. 2. Check the nameplate inside the cabinet door to verify that the model number and rating correspond to the ones specified. Record the model number and serial number in the front of this installation manual. This information is necessary should service be required. 3.
Installation Battery Location Batteries must be installed in Liebert NX 480V battery cabinets or battery room. Temperature is a major factor in determining battery life and capacity. Battery manufacturers recommend an operating temperature of 77°F (25°C). Ambient temperatures higher than this reduce battery life; temperatures lower than this reduce battery capacity. In a typical installation, battery temperature should be maintained between 74°F and 80°F (23-27°C).
Installation 1.6.1 Clearances There are no ventilation grilles on the sides or rear of the UPS. The unit may be placed with the rear against a wall and optional cabinets on either side. To enable routine tightening of power terminations within the UPS, make sure there is sufficient clearance in front of the Liebert NX to permit free passage of personnel with the door fully opened. Leave a minimum of 8 in. (203mm) between the top of the UPS and the ceiling to permit adequate air circulation above the unit.
Installation Figure 1 Cabinet arrangement—Liebert NX units and battery cabinets Liebert NX UPS Battery Cabinet Battery Cabinet Front of Units Battery Cabinet Battery Cabinet Battery Cabinet Liebert NX UPS Front of Units Liebert NX UPS Liebert NX UPS Liebert NX UPS Battery Cabinet Battery Cabinet Battery Cabinet Front of Units Front of Units Battery Cabinet Battery Cabinet Liebert NX UPS Multi-Module Parallel Cabinet Front of Units 8 Liebert NX UPS Battery Cabinet Liebert NX UPS
Installation Figure 2 Cabinet arrangement—Liebert NX units, battery cabinets and Liebert FPC Liebert Foundation Power Center Liebert NX UPS Battery Cabinet Battery Cabinet Front of Units Battery Cabinet Battery Cabinet Liebert NX UPS Battery Cabinet Front of Units Liebert Foundation Power Center Liebert Foundation Power Center Liebert NX UPS Front of Units Liebert Foundation Power Center Multi-Module Parallel Cabinet Liebert NX UPS Liebert Foundation Power Center Liebert NX UPS Battery
Electrical Connections 2.0 ELECTRICAL CONNECTIONS 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.
Electrical Connections 2.1.2 UPS Input Configuration Figure 3 illustrates the Liebert 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).
Electrical Connections 2.1.4 Cable Connections The rectifier input, bypass and output are easily accessible from the front of the unit for installation. All require lug type terminations. They are connected to busbars on the front side of the Liebert NX and below the circuit breaker, as shown in Figure 4. These busbars are accessible when the front side panel is removed. Busbars to connect external batteries are accessible from the front of the UPS.
Electrical Connections 2.1.5 Safety Ground The safety ground busbar is located below the Maintenance Bypass circuit breaker as shown in Figure 4. 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. ! WARNING Failure to follow proper grounding procedures can result in electric shock hazard to personnel or the risk of fire, should a ground fault occur.
Electrical Connections 2.1.7 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.
Electrical Connections Frequency Converter Mode If a frequency converter configuration is used, connect the AC input supply cables to the rectifier input busbars (A-B-C terminals). Torque to 88 lb-in (10N-m) for M8 bolts. Ensure correct phase rotation. There will not be any AC bypass supply cables to the bypass input (A-B-C terminals) and tighten the connections. NOTE The operations described in this section must be performed by authorized electricians or qualified technical personnel.
Electrical Connections Figure 6 Auxiliary terminal block detail (Monitoring Board) J8 J3 J1 LCD J22 X7 J23 X6 J12 J9 J2 J15 PWR MODEM SNMP CARD X5 J16 J17 Liebert IntelliSlot 2 J13 J21 J25 J28 J4 Liebert IntelliSlot 1 J26 J30 J10 X4 X4 J24 Liebert IntelliSlot 3 BFP INV ACF X2 X1 2.3 EPO Dry in MBC BCB NOTE: The black square ( ) on each slot indicates Pin 1. X3 Dry Contacts The UPS provides input dry contacts and output dry contacts.
Electrical Connections 2.3.1 Input Dry Contacts There are several input dry contacts at the X3 slot. Figure 7 Input dry contacts +12V +12V +12V +12V DRV FB GND OL FUSE F_FAN J10 T_0T T_IT AUX_0 J30 AUX_I GND BtG ENV J26 GEN +12V J4 +12V X3 NOTE: The black square ( ) on each slot indicates Pin 1. Table 1 Input dry contacts at X3 Position Name Description J4.1 ENV3 Battery Room Alarm (N.C.) J4.2 BtG J4.3 GEN1,2 J4.4 +12V Battery Ground Fault Detection (N.C.
Electrical Connections 2.3.3 BCB Control Interface J10 is the BCB box interface. Table 3 BCB control interface Position Name Description J10.1 DRV BCB Driver Signal J10.2 FB BCB Contact State J10.3 GND J10.4 OL Power Ground BCB On-Line - Input - This pin will become active when BCB interface is connected. (N.O.) NOTE All auxiliary cables of terminal must be double-insulated. Wire should be 20-16AWG stranded for maximum runs between 82 and 197 feet (25-60m), respectively.
Electrical Connections 2.3.4 Output Dry Contacts There are three output dry contact relays at the X1 slot (see Figure 9 and Table 4). Output dry contacts and EPO wiring for firmware before M170 NOTE: The black square on each slot Table 4 ACF_O ACF_S ACF_C INV_O J25 INV_C J21 BFP_O BFP_C J13 INV_S X1 BFP_S Figure 9 indicates Pin 1. Output dry contact relays Position Name Description J13.2 BFP_O Bypass feedback protection relay. Normally open. Closed when bypass SCR is shorted. J13.
Electrical Connections 2.3.5 EPO Input—Optional The UPS has an Emergency Power Off (EPO) function operated by a button on the control panel or by a remote contact provided by the user. The local EPO button is under a hinged, clear plastic shield. The X2 slot, shown in Figure 10, is the remote EPO input interface. The EPO has a NO/NC contact point that becomes active when shorting terminals X2: 3 and 4 or open terminal connection X2: 2 and 1.
Battery Installation 3.0 BATTERY INSTALLATION 3.1 Introduction 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. When replacing batteries, replace with the same manufacturer and type, or equivalent. See your Liebert representative for a list of approved batteries. 3.
Battery Installation 3.3 External Battery Cabinet Installation 3.3.1 Battery Cabinets Figure 11 Battery cabinet Top Cable Entry Optional Alber Data Collector Module Optional Alber Controller Module BCB Plate and BCB Battery Trays The same model battery cabinet may be installed in parallel in multiple cabinet strings for additional capacity. Battery run time depends on the cabinet model, the number of cabinets and the load on the UPS.
Battery Installation 3.3.2 Connecting the Batteries If the Liebert NX battery cabinets are installed on a raised floor, the battery power cables and circuit breaker control cables may be routed to the UPS cabinet via the floor of the cabinet (bottom entry). If the Liebert NX battery cabinets are installed adjacent to one another on a solid floor, these cables may be passed between the cabinets through lifting slots in the lower sides of the cabinets.
Battery Installation Figure 13 Battery tray and supports Slot in support secured by screw-in connector at corner of battery tray ... 3.3.4 ... and notched end of support slips into slot at top corner of battery compartment Connecting the Battery Cabinet to the UPS After the battery cabinet equipment has been positioned and secured for operation and the batteries have been connected, connect the power cables as described below. (See Figure 28.) 1.
Battery Installation 3.6 Alber Monitoring System—Optional The Liebert matching battery cabinet allows installing an optional Alber Battery monitoring system in the cabinet. The Alber Battery Monitoring by Liebert continuously checks all critical battery parameters, such as cell voltage, overall string voltage, current and temperature. Automatic periodic tests of internal resistance of each battery will verify the battery’s operating integrity.
Options 4.0 OPTIONS 4.1 Load Bus Synchronization The Load Bus Synchronizer (LBS) keeps the output of two independent UPS systems or parallel UPS systems in synchronization even when the systems are operating in different modes and even when either or both systems are operating on batteries. When the LBS is used, one UPS system is designated as master, the other as slave.
Options Figure 15 Load Bus Synchronization cable connection with multi-module systems UPS 8 X2-1 X2-2 X1-1 X1-2 P4 X1-2 X2-1 P1 P2 P1 X1-1 X1-2 X4 P3 X2-2 P1 DBS Cable P4 X1-1 P3 X1-2 X2-1 Parallel Board X3 P5 X4 P4 X2-2 P2 P1 X2-1 P4 P2 P3 X1-1 X4 P2 X4 X2-2 Parallel Board X3 P5 Parallel Board X3 P5 P3 Parallel Board X3 P5 UPS 8 Parallel System I A Parallel System II B The LBS function is activated with configuration software; when the LBS takes effect, the gra
Options Figure 16 Parallel system block diagram 480V 3W+G 480V 3W+G Tie breaker Output Input CB 3 CB 3A CB 1 CB 4 Optional additional systems Optional additional systems I Line FPC SBS AC AC UPS 4.2.3 Operating Principles Redundancy Paralleling The parallel redundant system can noticeably improve system reliability. In normal condition, none of the UPS modules work at full load. That means that even if the load is increased, the system will not transfer to bypass.
Options 4.3.1 Conditions for Parallel System • Each UPS module must have the same bypass source. • The outputs of all UPS modules are connected altogether. • The main inputs can be from different sources, but the phase rotation sequence of main inputs, bypass inputs and outputs must be correct and the same. • The parallel logic cable and load sharing cable must be connected in a ring correctly (see Figure 17).
Options Figure 17 Connecting system parallel control cables 1 Parallel Board X3 P5 Parallel Board X3 P5 X4 X2-2 UPS 2 3 Parallel Board X3 P5 X4 X2-1 X2-2 4 Parallel Board X3 P5 X4 X2-1 X2-2 X4 X2-1 X2-2 X2-1 X1-1 P1 X1-2 P4 P2 P1 X1-2 P3 X1-1 P4 P2 P1 X1-2 P3 X1-1 P4 P2 P1 X1-2 P3 P3 X1-1 P4 P2 Interconnecting Cables Auxiliary Dry Contact Cables The external output breaker of each UPS must have Normally Open auxiliary contacts.
Options Figure 19 Dry contacts, multiple UPS modules with distribution panel Input Distribution UPS 1 UPS 2 UPS N M 3 Board X3 Ext. Maint. Ext. Out M3 Board X3 Ext. Maint. Ext. Out M 3 Board X3 Ext. Maint. Ext.
Options 4.3.6 Emergency Power Off (EPO) The external emergency stop facility is identical to that described for the single unit installation— that an individual emergency stop button is provided for each unit.
UPS Specifications 5.0 UPS SPECIFICATIONS These specifications describe requirements for the Liebert NX UPS. 5.1 Conformity and Standards The UPS has been designed to conform to the following standards: • • • • • • • • • IEEC 61000-4-5 ASME CSA 22.2, No. 107.1 FCC Part 15, Class A ISO 9001 National Electrical Code (NFPA-70) NEMA PE-1 OSHA UL Standard 1778 The UPS system has UL and c-UL approval. 5.
UPS Specifications 5.4 Table 8 UPS Electrical Characteristics UPS terminal Input (For Single-Input Unit) Maximum Recommended Lug (Thomas & Betts part number) Unit Rating Nominal Input Current Maximum Input Current OCP Current OCP Device Rating Bolt Size Compression 2-Hole; 3/8" Bolt Mechanical 2-Hole; 40 48 66.8 80.2 90 8M 54106 ADR21 60 72 100.2 120.3 125 8M 54108 ADR21 80 96 133.6 160.4 175 8M 54157 ADR21 100 120 167.1 200.5 225 8M 54167 ADR50 120 144 200.
UPS Specifications Table 8 UPS terminal (continued) Battery Maximum Recommended Lug (Thomas & Betts Part Number) Unit Rating Nominal Input Current Maximum Input Current OCP Device Rating Bolt Size Compression 2-Hole; 3/8" bolt Mechanical 2-Hole; 40 82 at 480VDC 98 at 400VDC 70 8M 54106 ADR21 60 122 at 480VDC 146 at 400VDC 110 8M 54107 ADR21 80 163 at 480VDC 195 at 400VDC 150 8M 54152-TB ADR21 100 204 at 480VDC 244 at 400VDC 175 8M 54157 ADR21 120 244 at 480VDC 293 at
UPS Specifications 5.4.2 DC Intermediate Circuit Table 12 DC intermediate circuit 40 Rated Power kVA 60 80 100 Total 40 battery blocks of 12VDC (240 cells of 2VDC) will be supported by UPS Recommended number of lead-acid batteries Recommended float charge voltage 2.27VDC * Recommended boost charge voltage 2.4VDC * Recommended end of discharge voltage 1.67 - 1.75 VDC Maximum recharge battery current, A * 14.8 22.2 Maximum boost charge duration, min. * 29.6 37.0 0.
Installation Drawings 6.0 INSTALLATION DRAWINGS The diagrams in this section illustrate the key mechanical and electrical characteristics of the Liebert NX UPS System cabinets. Figure 21 Dimensional view- front and left side views Center of Gravity Without Internal Battery 600 mm (23.6") Liquid Crystal Display 2000 mm (78.7") 997mm (39.3") 39.6mm (1.6") 360mm (14.2") 301mm (11.9") Left Side Front 9. Each mounting location is supported by (2) 10ga. (.135") galvanized steel.
Installation Drawings Figure 22 Dimensions continued—top and bottom views 152 (6") 671.6 (26.4") 77 (3") 87.6 (3.5") 367.7 (14.5") 120.7 (4.8") 120.7 (4.8") 113.5 (4.5") 841 (33.1") 120 (4.7") 150 600 (5.9") (23.6") 150 (5.9") 514.5 (20.3") 987.1 (38.
Installation Drawings Figure 24 Cable connections 600 (23.6") 965 (38") 2000 (78.7") LEFT SIDE VIEW (with side panel removed) FRONT VIEW (with door removed) 20 (.79") 25.4 (1") CB1 CB2 35 (1.38") CB3 CB5 NOTES 158.1 (6.22") 6 (.24") DC 35 (1.38") Output Main 36 (1.42") GND Bypass 39 1. All dimensions are millimeters (in.). 2. Top and bottom cable entry available through removable access plates. Remove, punch to accommodate conduit size and replace. 3.
Installation Drawings Figure 25 Outline drawing, 33" battery power pack system, single cabinet 896.6 (35.3) 26.8 (1.1) 172.1 (6.8) 609.3 (24) 322.9 (12.7) 169.5 (6.7) 372.7 (14.7) 474.3 575.9 (18.7) (22.7) 322.9 (12.7) 779.1 (30.7) 872.2 (34.3) Bottom (Viewed From Below) 965 (38) Max. Door Swing: 120° Top (Viewed From Above) 845 (33.2) Center of Gravity 490.3 (19.3) Center of Gravity 418.9 (16.5) Leveling Feet (See Note #9) 2000 (78.7) Right Side 683 (26.9) Front (Without Door) 1.
Installation Drawings Figure 26 Terminal details, 33" battery power pack system, single cabinet Liebert NX 59 (2.32) PCB (-) Negative Transformer For Alber Monitoring System (Optional) 9 (0.30) 76.2 (3) Fused Input for Alber Monitoring System (Optional) Terminal Block Aux. Contacts DETAIL B B (+) Positive A Top (Without Protective Plates) NOTES: 1. All dimensions are in millimeters (inches). 2. All cables should be routed before bolting cabinets together. 3.
Installation Drawings Figure 27 Battery connections Bay #2 5 P OS ITIV E + 32 Pcs 8 NE GA TIV E 6 AUX 12 14 C2 - 13 MX 11 C1 Ext. Batt.
Installation Drawings Figure 28 Battery cabinet interconnection NOTES: 1. All cables must be repositioned prior to and while setting the cabinets in their installed location. 2. Refer to the individual drawing of each piece of equipment for additional details.
Installation Drawings Figure 29 Outline drawing, Liebert NX480V, 80-120kVA Type E and E2 parallel cabinet 800 (31.5) 965 (38) Top Right Side NOTE: 2000 (78.7) Front 1. All dimensions are in millimeters (in). 2. Eight-inch minimum clearance above unit required for air exhaust. 3. Keep cabinet within 15 deg. of vertical while handling. 4. Top and bottom cable entry available through removable access plates. Remove access plate, punch to suit conduit size and replace. 5. Color - black. 6.
Installation Drawings Figure 30 Outline drawing, Liebert NX480V, 80-120kVA Type E1 parallel cabinet 1240 (48.8) 965 (38) Top Right Side 2000 (78.7) NOTE: Front 1. All dimensions are in millimeters (in). 2. Eight-inch minimum clearance above unit required for air exhaust. 3. Keep cabinet within 15 deg. of vertical while handling. 4. Top and bottom cable entry available through removable access plates. Remove access plate punch to suit conduit size and replace. 5. Color - black. 6.
Installation Drawings Figure 31 Main component location drawing Liebert NX 480V, Type E parallel cabinet System Input System O/P Tie Breaker UPS Output Breaker UPS Input Breakers Kirk - Key Fuse Disconnect Ground Busbar System Bypass Tie Breaker Rear Front 46 System Output Busbar
Installation Drawings Figure 32 Main component location drawing Liebert NX 480V, Type E1 parallel cabinet System Input 1240 (48.8) UPS Input Ground Bus 2000 (78.
Installation Drawings Figure 33 Main component location drawing Liebert NX 480V, Type E2 parallel cabinet System O/P Tie Breaker UPS Output Breakers Kirk-Key Fuse Disconnect Bround Busbar FRONT 48 System Output Busbars
Installation Drawings Figure 34 Lineup detail—Parallel Type E connection to Liebert NX G1-G4 H1-H4 A B1-B4 G1-G4 H1-H4 FRONT (Without Covers) C1-C4 B1-B4 FRONT (Door Open) C1-C4 E1-E4 F D REAR (Without Covers) E1-E4 Run From To Conductors A Utility Source Parallel Cabinet Ph A, B, C - System Input B1-B4 Parallel Cabinet UPS #1-UPS #4 Module AC Input Ph A, B, C - UPS Inputs C1-C4 UPS #1-UPS #4 Module AC Output Parallel Cabinet Ph A, B, C UPS Outputs D Parallel Cabinet Critical
Installation Drawings Figure 35 Lineup detail—Parallel Type E1 connection to Liebert NX A G1-G4, H1-H4 B1-B4 E1-E4, F G1-G4, H1-H4 FRONT (Without Covers D B1-B4 E1-E4 C1-C4 FRONT (With Door Open) REAR (Without Covers C1-C4 Run From To Conductors A Utility Source Parallel Cabinet Ph A, B, C - System Input B1-B4 Parallel Cabinet UPS #1-UPS #4 Module AC Input Ph A, B, C - UPS Inputs C1-C4 UPS #1-UPS #4 Module AC Output Parallel Cabinet Ph A, B, C - UPS Outputs D Parallel Cabinet Cr
Installation Drawings Figure 36 Lineup detail—Parallel Type E2 connection to Liebert NX G1-G4 H1-H4 C1-C4 E1-E4 F G1-G4 H1-H4 D C1-C4 B1-B4 FRONT (Without Covers) FRONT (Door Open) E1-E4 Run From To Conductors B1-B4 Utility UPS #1-UPS #4 Module AC Input Ph A, B, C - UPS Inputs C1-C4 UPS #1-UPS #4 Module AC Output Parallel Cabinet Ph A, B, C - UPS Outputs D Parallel Cabinet Critical Loads Ph A, B, C - System Outputs E1-E4 Parallel Cabinet UPS #1-UPS #4 Module Gnd Ground - UPS F
Installation Drawings Figure 37 Line-up detail, bolt together description, 40-120 kVA Liebert NX LEFT SIDE (Without Exterior Panels) 965 (38 in.) LEFT SIDE (Isometric View) NOTES: 1. All dimensions are in millimeters (inches) 2. All cables should be routed before bolting cabinets together. 3. The cables between the auxillary cabinets and the UPS cabinet must be supplied by customer. 4. All hardware supplied with ancillary cabinets for bolting cabinet to UPS. 5. Use M6 hardware provided.
Operation 7.0 OPERATION 7.1 General Description Liebert’s NX provides continuous, high-quality AC power to your business-critical equipment, such as telecommunications and data processing equipment. The Liebert NX UPS supplies power that is free of the disturbances and variations in voltage and frequency common to utility power, which is subject to brownouts, blackouts, surges and sags.
Operation 7.1.1 Bypass Supplies The Liebert NX contains an electronically controlled switching circuit that enables the critical load to be connected to either the inverter output or to a bypass power source via the static bypass line. During normal system operation the load is connected to the inverter and the inverter contactor is closed; but in the event of a UPS overload or an inverter failure, the load is automatically transferred to the static bypass line.
Operation Maintenance Mode For maintenance or repair, the Liebert NX may be operated in maintenance mode. To place the Liebert NX in maintenance mode, the load must be transferred to bypass and the inverter must be turned off. When those conditions are met, the CB3 may be turned on and the UPS may be shut down, permitting disconnecting the batteries for maintenance. ! CAUTION ! WARNING The internal maintenance bypass must not be used when the UPS system is in a parallel system.
Operator Control and Display Panel 8.0 OPERATOR CONTROL AND DISPLAY PANEL 8.1 Operator Control Panel The control panel and LCD on the front of the Liebert NX let the operator: • • • • turn the UPS On or Off transfer into the various operating modes silence alarms check the status of the UPS and its batteries, including all measured parameters, events and alarms The main areas of the control panel are shown below in Figure 39 and detailed in Figure 40.
Operator Control and Display Panel Figure 40 Detailed view of control panel 1 2 3 4 5 6 8 9 10 11 7 12 13 14 Mimic indicators 1. Rectifier indicator 2. Battery indicator 3. Inverter indicator 4. Bypass indicator 5. Load indicator 6. Status indicator 7. Buzzer 15 16 17 18 19 Control buttons 8. Inverter Off Button 9. Emergency Power Off Button 10. EPO Cover 11. Fault Clear Button 12. Silence On/Off Button 13. Inverter On Button 14. LCD 57 Navigation keys 15. F1 16. F2 17. F3 18. F4 19.
Operator Control and Display Panel 8.2 Mimic Display Indicators The Mimic display on the front panel consists of six indicators arranged in a single-line diagram depicting the various paths of UPS power, as shown in Figure 41. Figure 41 Mimic display indicators location Load indicator Bypass indicator Inverter indicator Liebert NX 80kV A-3X 3 Main LED1 Rectifier indicator LED2 LED4 LED5 LED3 Buzzer STATUS 09:20:37 Norm al Bypass L1-N/L 2 L-N current (A) 71. 4 Frequency (HZ) 59.
Operator Control and Display Panel 8.3 Control Buttons The Control Buttons on the front panel may be used to shut down the UPS completely, turn the inverter On or Off, restart the UPS after a fault and silence the alarm, as shown in Figure 42. The function of each button is described in Table 16. NOTE To activate a button properly, press and hold until you hear a short beep—about two seconds.
Operator Control and Display Panel 8.4 Audible Buzzer The buzzer produces three types of sounds: • Single beep - when any control button is pressed • Single beep repeating every two seconds - the system has a general alarm • Continuous - the system has a serious fault If the buzzer makes no sound, the system may be operating properly, or an alarm may have been silenced manually.
Operator Control and Display Panel 8.6 Navigation Keys The navigation keys on the front panel—F1 through F4 and Help—are used to access the LCD to view the current status and other information about the Liebert NX. Navigation key icons on the LCD appear above each key to indicate its operation (see Table 17). The keys are “soft keys” that can change functions according to the icon. • Use F1 either to move to a different portion of the LCD (Shift icon) or to escape to a previous view (ESC icon).
Operator Control and Display Panel 8.8 LCD Menus and Data Items The LCD menus provide access to the following categories of information and settings for the UPS. Selecting a menu changes the information displayed in the UPS data items portion of the LCD. The menu choices are listed below and described in detail in Table 19.
Operator Control and Display Panel Table 19 Descriptions of UPS menus and data window items Menu Type Mains (input) TX Input Bypass Output TX Output Load System Battery Item Type Explanation L-N current (A) Phase current Frequency (Hz) Input frequency L-L voltage (v Line-line voltage Power factor Power factor L-L voltage (V) Line-line voltage Frequency (Hz) Bypass frequency L-L voltage (A) Line-line voltage L-N current (A) Phase current Frequency (Hz) Output frequency L-L voltag
Operator Control and Display Panel Table 19 Descriptions of UPS menus and data window items (continued) Menu Type Command (start / stop battery & system tests) Item Type Explanation Battery maintenance test This test performs a partial discharge of the battery to obtain a rough estimate of the battery capacity. Load must be between 20% and 80%. Battery capacity test This test performs a full discharge of the battery to obtain a precise measure of the battery capacity.
Operator Control and Display Panel 8.10 Current Date and Time To change the system date and time: • From the main menu, press the F1 (shift) key to move the cursor to the menu at the top of the screen. • Press F2 and F3 (left and right arrows) as needed to select the Settings menu. • Press F1 (shift) to move the cursor to the data and settings area of the LCD. • Use F2 and F3 (up and down) to select the Date & Time option, then press F4 (enter).
Operator Control and Display Panel 8.11 UPS Status Messages The Liebert NX displays status changes as they occur in the current status window of the LCD, then stores that data in the history log, as shown in Figure 48. • Current Status Window: The status messages are displayed chronologically and include the date and time of the events. Three status messages are visible in the window at a time. To see other messages, use the navigation keys to scroll up or down the list.
Operator Control and Display Panel 8.12 Types of LCD Screens This section provides a quick guide to the main types of LCD screens. 8.12.1 Opening Display As the UPS begins powering up, the opening display appears, as shown in Figure 49. Figure 49 Opening display F1 F2 F3 HELP F4 8.12.2 Default Screen After the UPS has powered up and completed a self-test, the output screen appears, as shown in Figure 50. This window is the default screen.
Operator Control and Display Panel 8.12.3 UPS Help Screen Press the HELP key below the LCD to display the Help window shown in Figure 51. (Press the HELP key again to exit the Help window.) Figure 51 Help screen Help information Select the current record window Select the previous menu item Select the next menu item Press ENTER key to view KVA history Press ENTER Q3 key to view KVA history Q2 Q5 Q1 Press help key back to main menu Press help key back to main menu F1 F2 F3 F4 ? HELP 8.12.
Operator Control and Display Panel 8.13 Pop-Up Windows Pop-up prompt windows appear when the user must confirm a choice or perform an operation. This section describes the pop-up windows. 8.13.
Operating Instructions 9.0 OPERATING INSTRUCTIONS 9.1 Liebert NX Operating Modes The Liebert NX can operate in any of four modes, as shown in Table 20. This section provides instructions on switching between modes, resetting the UPS, switching the inverter On and Off and performing other operations. Table 20 UPS operating modes Operating Mode Circuit Breaker State Description Normal Operation CB1:ON CB2:ON CB3:OFF CB5:ON The UPS is powering the load.
Operating Instructions 9.1.1 Circuit Breakers The UPS can be isolated by means of circuit breakers, mounted inside the cabinet and accessible after opening the front door. The location of the UPS power switches is shown in Figure 53. Figure 53 Circuit breakers The UPS unit circuit breakers are CB1, CB2, CB3 and CB5. • • • • CB1—Main Input circuit breaker; connects the utility supply to the UPS main input. CB2—Bypass circuit breaker; connects the utility supply to the UPS bypass.
Operating Instructions 9.2 UPS Startup The Liebert NX must be fully installed and commissioned before startup, and external power isolators must be closed. Once those general conditions are met, the UPS may be started. 9.2.1 Startup Procedure To start the UPS from a fully powered-down condition: 1. Open the UPS door to gain access to the main input circuit breakers. ! WARNING During this procedure the output terminals will become live.
Operating Instructions 6. Press the INVERTER ON control button for 2 seconds. The inverter will start and the inverter indicator will flash green. After the inverter is ready, the UPS will transfer from bypass to inverter, the bypass indicator will turn off and the inverter and load indicators will turn on. The UPS is operating normally. The UPS Mimic display indicators will: 9.2.
Operating Instructions 9.3 Maintenance Bypass Procedure and Powering Down the UPS 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. If those conditions are not present, there is a risk of a short interruption in powering the load.
Operating Instructions 9.4 Auto Restart When the main and bypass sources fail, the UPS draws power from the battery system to supply the load until the batteries are depleted. When the UPS reaches its end of discharge (EOD) threshold, it will shut down.
Operating Instructions 9.7 Battery Protection 9.7.1 Battery Undervoltage Pre-Warning Before the end of discharge, the Liebert NX displays a Low Battery pre-warning. After this pre-warning, the battery has the capacity for 5 minutes discharging with full load (default time). The Liebert NX can be user-configured to display this warning from 3 to 60 minutes before end-of-discharge. 9.7.
Operating Instructions Figure 54 Typical parallel system block diagram with common input supply, with separate batteries and optional output / bypass distribution panel 480V 3W+G 480V 3W+G Tie breaker Output Input CB 3 CB 3A CB 1 CB 4 Optional additional systems Optional additional systems I Line FPC SBS AC AC UPS NOTE All equipment servicing procedures must be carried out only by trained personnel.
Operating Instructions 9.8.2 Inserting One Module into a Multi-Module System This procedure outlines how to integrate a UPS module that has been previously isolated from other modules of a group of paralleled UPS modules. It is assumed that the installation is complete, the system has been commissioned by authorized personnel and the external power isolators are closed. WARNING ! Mains voltage will be applied to UPS output terminals.
Operating Instructions 9.8.3 Shutdown Procedure—Complete UPS and Load Shutdown This procedure must be followed to completely power down the UPS and the load. All power switches, isolators and circuit breakers will be opened and power will be removed from the load. In multi-module systems, perform each step of the procedure in every UPS module before proceeding to the next step. ! CAUTION This procedure will shut off power to the load.
Operating Instructions 9.10 Parallel System Start Up 1. Start each UPS normally as described in 9.2 - UPS Startup 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. 4. Verify the load rate of each UPS module. If the load rates are roughly the same, then the parallel system may be assumed to be operating normally.
Options 10.0 OPTIONS Several items of optional equipment are available for connection to the Liebert NX UPS. 10.1 Communication and Other User Terminals The UPS can be integrated into advanced networking environments via UPS monitoring software such as Windows-based UPS Monitor, MultiLink™, Nform™, SiteNet, Modbus / Jbus, SiteScan, SiteScan 2, SNMP, etc. They allow UPS status monitoring and automatic and safe shutdown of the server and PCs.
Options 10.1.4 Communication and Monitoring Liebert IntelliSlot Web Card - SNMP/HTTP Network Interface Card This network interface card provides all real-time data and status information as SNMPv1 traps for connection to a 10/100-baseT Ethernet connection. The same card also will transmit the same status information and all measured parameters for display through a Web browser.
Options 10.1.5 Configuring Baud Rates The default baud rate for Liebert IntelliSlots is 9600. To communicate with the OCWEB-LB, Modbus/ Jbus, or the MultiLink cards, the baud rate must be set to 2400. To change the baud rate (refer to Table 21): 1. Use the Navigation keys directly below the LCD to highlight the Settings Screen. 2. Press F1 to move the highlight into the Data & Settings area of the LCD. 3.
Options Figure 56 Liebert IntelliSlot Web card display 84
Options Relay Card The relay card provides voltage-free contact closures for remote monitoring of alarm conditions. Delivering On Battery, On Bypass, Low Battery, Summary Alarm, UPS Fault and On UPS signals, the easy-to-install card integrates with AS/400 computers (additional cable required) and other relay contact monitoring systems. The relay card is rated for 24 VAC/DC at 1A and supported in any of the three Liebert IntelliSlot bays on the Liebert NX.
Options MultiPort 4 Card The MultiPort 4 card provides four sets of voltage-free contact closures for remote monitoring of alarm conditions UPS operation On Battery and Low Battery condition. A typical application is to allow a maximum of four computer systems to simultaneously monitor the status (e.g., utility power failure-low battery) of a single UPS. This card is supported in any of the three Liebert IntelliSlot bays on the Liebert NX.
Options 10.2 LBS Mode—Load Bus Synchronization The function of LBS is to keep the output of two independent UPS systems (single unit or multiple unit) in synchronization even when the two systems are operating in different modes (bypass/ inverter) or on batteries. It is usually used with a Static Transfer Switch connected to the critical load to achieve dual bus configuration. NOTE In LBS configuration, both units must be supplied from the same utility source. 10.2.
Specifications and Technical Data 11.0 SPECIFICATIONS AND TECHNICAL DATA 11.1 Lug Size and Torque Requirements Use commercially available solderless lugs for the wire size required for your application. Refer to Table 24. Connect wire to the lug using tools and procedures specified by the lug manufacturer. Table 24 Torque specifications Nut and Bolt CombinationS Grade 2 Standard Electrical Connections with Belleville Washers Bolt Shaft Size Lb-in N-m Lb-in N-m 1/4 5/16 3/8 1/2 53 107 192 428 6.
Specifications and Technical Data Liebert NX, then add the appropriate length from the table and adequate slack for repair and maintenance. Table 26 Distance to connection points on the Liebert NX UPS Distance From Floor in. (mm) From Top of Unit in.
Specifications and Technical Data Table 28 External cabinet dimensions, including side panels Type E1 Parallel Cabinet Unit Width mm (inch) Depth 1240 (48.8) 965 (38) Height 2000 (78.7) Type E Parallel Cabinet Unit Width Depth Height mm (inch) 845 (33.2) 965 (38) 1956 (77) Matching Battery Cabinet Unit Width Depth Height mm (inch) 845 (33.2) 965 (38) 1956 (77) Table 29 Lead/Lag ratings Load Power Factor kVA Rating kW Rating -0.5 100% 50% -0.6 100% 60% -0.7 100% 70% -0.
Specifications and Technical Data Table 32 Cable size tightening torque at Liebert NX 80kVA UPS terminals Cable Size (Copper Wire Only) Torque to Tighten Terminal Bus & Lug Body Main Input (Single Input) 2/0 10 N*m Main Input (Dual Input) 2/0 10 N*m Bypass Input (Dual Input) 1/0 10 N*m Output 1/0 10 N*m Bus Type Table 33 Cable size tightening torque at Liebert NX 100kVA UPS terminals Cable Size (Copper Wire Only) Torque to Tighten Terminal Bus & Lug Body Main Input (Single Input) 4/0 1
Specifications and Technical Data 11.
UPS Status Messages APPENDIX A - UPS STATUS MESSAGES Table 36 shows all event messages as they appear in the current status area of the LCD and in the history log, along with a description and recommended actions, if any. For further information on the current status area and the history log, see 2.11 UPS Status Messages. Table 36 UPS status messages Event Message Description / Suggested Action (if any) Inverter Comm. Fail The RS-485 communication between internal monitor and inverter has failed.
UPS Status Messages Table 36 UPS status messages Event Message Description / Suggested Action (if any) Bypass Unable to Trace This alarm is triggered by an inverter software routine when the amplitude or frequency of bypass voltage is beyond the normal range. The amplitude threshold is fixed for positive and negative 10% rating. This alarm automatically resets once the bypass voltage goes normal. First verify that the bypass voltage and frequency displayed on the panel is within the selected range.
UPS Status Messages Table 36 UPS status messages Event Message Description / Suggested Action (if any) Inverter STS Fail At least one of the static switches of inverter side is open or short circuit. This fault is locked until power off. Contact Liebert Global Services for assistance at 800-543-2378 for assistance. Bypass STS Fail At least one of the static switches of bypass side is open or short-circuited. This fault is locked until power off.
UPS Status Messages Table 36 UPS status messages Event Message Description / Suggested Action (if any) DC Bus Overvoltage Rectifier, inverter and battery converter were shut down because DC bus voltage is too high. Check whether there is a fault in rectifier side. If not, check whether overload occurs. Restart the inverter after resetting the fault. If fault does not clear, contact Liebert Global Services at 800-543-2378 for assistance.
UPS Status Messages Table 36 UPS status messages Event Message Battery Float Charging Description / Suggested Action (if any) Battery is float charging Battery Boost Charging Battery is boost charging Battery Discharging Battery is discharging Battery Period Testing Battery is period self-testing. Batt. Capacity Testing Battery is capacity self-testing. Batt. Maint. Testing Battery is maintenance self-testing.
UPS Status Messages 98
Ensuring The High Availability 0f Mission-Critical Data And Applications. Emerson Network Power, the global leader in enabling business-critical continuity, ensures network resiliency and adaptability through a family of technologies—including Liebert power and cooling technologies—that protect and support business-critical systems. Liebert solutions employ an adaptive architecture that responds to changes in criticality, density and capacity.
