Liebert NX UPS System - Manuals

iv FIGURES Figure i Model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi Figure 1 Residual current circuit breakers (RCCB) symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure ...

v TABLES Table 1 Maximum steady state AC and DC currents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 2 Distance from floor to connection point on the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 3 Input dry contact...

vi Figure i Model number nomenclature UPS Single Module Liebert NXe UPS module ratings: 10, 15, 20, 30kVA (with internal battery) Example: NXE0A0010U = 10kVA module for Europe and Middle East, 400V/230V output Options Model Identification Note Battery cabinet NXE0NBCS Battery Ground Fault detection ...

1 SAFETY PRECAUTIONS This manual contains information concerning the installation and operation of this Emerson Network Power Liebert NX ™ Uninterruptible Power System (UPS). This manual should be read before commencing installation.The UPS must be commissioned and serviced by an engineer approved b...

2 User-Serviceable Parts All equipment maintenance and servicing procedures involving internal access requires the use of a tool and should be carried out only by trained personnel. There are no user-serviceable parts behind covers requiring a tool for removal.This UPS is fully compliant with safety...

Single Module UPS Installation 3 1.0 S INGLE M ODULE UPS I NSTALLATION 1.1 Introduction This following section describes the requirements that must be taken into account when planning the positioning and cabling of the Liebert NX uninterruptible power supply and related equipment.This chapter is a g...

Single Module UPS Installation 4 1.3 Location 1.3.1 UPS Room The UPS and its internal battery is intended for indoor installation and should be located in an envi- ronment with clean air and with adequate ventilation to keep the ambient temperature within the specified operating range (see Table 30 ...

Single Module UPS Installation 5 1.4 Positioning The cabinet is mounted on four castor-wheels for ease of positioning and for short distance movement. Jacking feet are provided to prevent the UPS from moving once it has been wheeled to its final posi- tion.For optimal design life, the place chosen m...

Single Module UPS Installation 6 1.4.4 Clearances The Liebert NX has no ventilation grilles at either side of the UPS. To enable routine tightening of power terminations within the UPS, in addition to meeting any local regulations, Liebert recom- mends providing adequate clearance in the front of th...

Single Module UPS Installation 7 Earth Leakage (RCD): Any residual current detector (RCD) installed upstream of the UPS input supply must be: • sensitive to DC unidirectional pulses (Class A)• insensitive to transient current pulses, and• must have an average sensitivity, adjustable between 0.3 and ...

Single Module UPS Installation 8 1.6 Power Cables The cable design must comply with the voltages and currents provided in this section, follow local wir- ing practices and take into consideration the environmental conditions (temperature and physical support media).For cable entry terminal, refer to...

Single Module UPS Installation 10 Output System Connections 6. Connect the system output cables between the UPS output (oA-oB-oC-N terminals) and the critical load and tighten the connections to 5 Nm (M6 Bolt). Ensure correct phase rotation. Internal UPS Battery Connection 7. The battery consists of...

Single Module UPS Installation 11 1.7 Control Cables and Communication 1.7.1 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 ...

Single Module UPS Installation 12 1.8 Dry Contacts The UPS provides input dry contacts and output dry contacts. 1.8.1 Input Dry Contacts There are several input dry contacts at the X3 slot. Figure 3 Input dry contacts X3 Ancillary Control and Alarms X3 IN DRY: Environmental, Battery Ground Fault and...

Single Module UPS Installation 13 1.8.3 External Circuit-Breaker Interface J10 is the interface to any external battery circuit breaker (BCB). Figure 4 Jumper connection for BCB interface Table 5 External circuit-breaker interface Position Name Description J10.1 DRV BCB Driver Signal - (reserved) J1...

Single Module UPS Installation 14 1.8.4 Output Dry Contacts There are three output dry contact relays at the X1 slot (see Figure 5 and Table 6 ) Figure 5 Output dry contacts and EPO wiring Table 6 Output dry contact relays Position Name Description J13.2 BFP_O Bypass feedback protection relay; norma...

Single Module UPS Installation 15 1.8.5 Emergency Power Off Input The UPS has an Emergency Power Off (EPO) function that operates by a button on the control panel or by a remote contact provided by the user. The EPO button is under a hinged, clear plastic shield.The X2 slot, shown in Figure 5 , is t...

Single Module UPS Installation 16 Serial Ports RS232-1 and RS232-2 RS232-1 provides serial data and is intended for direct use with Liebert MultiLink monitoring and server shutdown software.RS232-2 provides serial data and is intended for use by authorized commissioning and service person- nel.These...

Battery Installation 17 2.0 B ATTERY I NSTALLATION 2.1 Introduction The UPS battery bank consists of battery blocks connected in series to provide a D.C. string voltage as required by the UPS converter. The 'AUTONOMY TIME' (the time during which the battery can maintain supply to the load in the eve...

Battery Installation 18 2.2 Safety Special care should be taken when working with the batteries associated with the Liebert NX UPS system. When all the cells are connected together, the battery terminal voltage is potentially hazard- ous. The battery installation must be segregated from all but appr...

Battery Installation 19 2.3 Battery Cabinet 2.3.1 Introduction This cabinet can also be used in conjunction additional cabinets, to provide the necessary accommoda- tion required by the larger cells associated with system’s having a long autonomy time.Where two (or more) cabinets are used they are p...

Battery Installation 20 2.3.6 Battery Temperature Sensor (Optional) The optional external battery temperature sensor kit contains one probe and one temperature trans- port board as illustrated in Figure 7 . It is connected to the UPS Monitor Board. Figure 7 Single temperature sensor and monitor boar...

Battery Installation 21 2.3.9 General Arrangement Drawings Refer to Figures 8 and 10 for general arrangement of battery cabinet models. Figure 8 Battery cabinet bottom cable entry location 828 620 1400 100 700 83 82,5 250 All dimensions areexpressed in millimeters. Bottom View

Battery Installation 22 Figure 9 Battery cabinet with fuse or optional circuit breaker locations Bottom cable entry

Battery Installation 23 Figure 10 Battery cabinet internal layout Minimum service space 65mm 3 Layers:Largest battery dimensions:201x170x190 (LxWxH) Positions of captive nuts for grille mounting 1 Layer:Largest battery dimensions:201x170x190 (LxWxH) Captive nut M6 Hex flangescrew M6x16 1. 15 29 43 D...

Battery Installation 24 Figure 11 Battery cabinet, bottom entry 2.4 Battery Power Cables 2.4.1 Connection Principles The following notes, in conjunction with the diagrams, illustrate the broad principles to be followed when fitting and connecting the majority of battery installations. Item # Item Na...

Battery Installation 25 2.4.2 Fitting the Batteries 1. In general, at least 10mm (3/8") must be left unobstructed on all vertical sides of the battery blocks to permit free air movement around the cells. 2. Clearance should be allowed between the top of the cells and the underside of the shelf a...

UPS Multi-Module Installation 26 3.0 UPS M ULTI -M ODULE I NSTALLATION 3.1 General The installation of a multi-module UPS configuration must follow the installation procedure for a sin- gle UPS module with the additional requirements detailed in this chapter.In addition to the local EPO push button ...

UPS Multi-Module Installation 27 3.2 Paralleled UPS Modules The basic installation procedure of a parallel system comprising two or more UPS modules is the same as that of single module system. The following sections only introduce the installation proce- dures specific to the parallel system. 3.2.1...

UPS Multi-Module Installation 28 Figure 15 Dry contacts, multiple UPS modules with distribution panel 3.2.2 External Protective Devices Refer to the instructions in 1.0 - Single Module UPS Installation . 3.2.3 Power Cables The wiring of power cables is similar to that of single module system. The By...

UPS Multi-Module Installation 29 3.2.4 Control Cables Intermodule Control Shielded and double insulated control cables available in lengths of 5, 10 and 15 meters must be must be interconnected in a ring configuration between UPS modules as shown below. The parallel control board is mounted on the t...

UPS Multi-Module Installation 30 3.3.3 Power Cables The wiring of power cables is similar to that of single module system except that the output of the upstream UPS is fed into the bypass input of the downstream UPS, and the load is fed by the down- stream UPS through its inverter or bypass. The byp...

UPS Multi-Module Installation 31 3.4 Dual Bus System 3.4.1 Cabinet Installation The Dual Bus System consists of two independent UPS configurations each consisting of one or more UPS modules. Dual Bus Systems are high availability configurations suitable for loads with multiple input terminals. For s...

UPS Multi-Module Installation 32 3.4.4 Control Wires For Liebert NX to NX dual bus configuration, interconnect the optional DBS cable between any DBS ports of two parallel systems as illustrated in Figure 19 . Figure 19 Connections of a typical dual bus system utilising Load Bus Synch 3.4.5 Extended...

Installation Drawings 33 4.0 I NSTALLATION D RAWINGS Figure 20 Electrical connections X5 X3 X4 X1 X2 Ext EPO BCB Monitor Board Input MBC External Battery Batt UPS Parallel Board To Customer’s SafetyEarth Earth A B C N A B C N To Critical Load Main/Bypass InputSupply PowerCables + N - J28-1J28-2 X3 X...

Installation Drawings 34 Figure 21 General arrangement—10-30kVA UPS module FRONT VIEW LEFT SIDE VIEW Leveling feet Detail A, rear of unit shown without side panel Leve 10mm dia threaded mounting holes 86.5 7 2 1 700 600 1400 90 867.5 1380 TOP VIEW BOTTOM VIEW 625 420 180 3 5 4 6 572 210 166 236 346 ...

Installation Drawings 35 Figure 22 10-30kVA NX front view with doors open 1 2 3 4 5 External Battery Input Bypass Input Main Input Output T1 T2 1) Main/Bypass Input terminal (T1) 2) Battery /Output terminal (T2) 3) Input circuit breaker (CB1) 4) Rotary switch (SW1) 5) Monitor board (U2)

Installation Drawings 36 Figure 23 Location of parallel logic board M3 BatteryStartInterface NXe 10-30kVA Top View ParallelLogicBoard

Installation Drawings 38 Figure 26 Internal battery layout 136 mm 160 mm 160 mm 160 mm 160 mm 151 mm Battery 562mm 347mm

Operation 39 5.0 O PERATION 5.1 Introduction Liebert’s NX™ Uninterruptible Power System system provides continuous, high-quality AC power to your business-critical equipment, such as telecommunications and data processing equipment. The NX UPS supplies power that is free of the disturbances and vari...

Operation 40 5.1.2 Static Transfer Switch The circuit blocks labeled Static Switch in Figure 27 contain electronically controlled switching cir- cuits that enable the critical load to be connected to either the inverter output or to a bypass power source via the static bypass line. During normal sys...

Operation 41 5.1.4 Redundant Control Power Supply Board The UPS is equipped with two identical and fully redundant control power supply boards. Each of them takes inputs from the AC and DC sources. When one of the sources or even if one of the control power boards fails, the UPS system can still ope...

Operation 42 5.2.1 Features of NX Multi-Module UPS Configurations 1. The hardware and firmware of single module UPS units is completely compatible with the requirements of a multi-module system. Multi-module configuration is achieved merely through settings in configuration software. 2. Parallel con...

Operation 43 5.3.4 Bypass Mode If the inverter overload capacity is exceeded, or if the inverter becomes unavailable for any reason, the static transfer switch will perform a transfer of the load from the inverter to the bypass source, with no interruption in power to the critical AC load. Should th...

Operation 44 5.4 Battery Management—Set During Commissioning 5.4.1 Normal Function • Constant charging current— Current can be set up to limit charging power. • Constant boost voltage boost (if applicable) — Voltage of boost charging can be set as required by the type of battery.For Valve Regulated ...

Operating Procedures 45 6.0 O PERATING P ROCEDURES 6.1 Introduction The NX can operate in any of four modes, as shown in Table 9 . This section provides instructions on switching between modes, resetting the UPS, switching the inverter On and Off and performing other operations. 6.1.1 Power Switches...

Operating Procedures 46 6.2 UPS Startup The 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. 6.2.1 Start-Up Procedure To start the UPS from a fully powered-down condition:1. Open th...

Operating Procedures 47 5. Turn the rotary switch to NORMAL, then 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 transfers from bypass to inverter, the bypass indicator turns off and the in...

Operating Procedures 48 6.3 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. This procedure assumes that UPS is operating normally.1. Press the INVERTER OFF button on the right side...

Operating Procedures 49 6.5 Powering Down the UPS and Maintaining Power to Load If the UPS needs to be shut down completely while maintaining power to the load, follow these steps:1. Perform Steps 1 through 5 in 6.3 - Switching the UPS from Normal to Maintenance Bypass . 2. Close the external mainte...

Operating Procedures 50 6.6 Emergency Shutdown With EPO This circuit has been designed to switch off the UPS in emergency conditions (i.e., fire, flood, etc.). The system will turn off the rectifier, inverter and stop powering the load immediately (including the inverter and bypass), and the battery...

Operating Procedures 51 6.9 Language Selection The LCD menus and data display are available in 12 languages: Chinese, Dutch, English, French, German, Italian, Japanese, Polish, Portuguese, Russian, Spanish and Swedish.To select a different language than the one being displayed:1. From the main menu,...

Operating Procedures 52 6.12 Isolating One Module in a Multi-Module System 1. With all UPS modules in the system in Normal mode, open the external output isolator. 2. Press the UPS EPO to isolate the batteries.3. Open the UPS door to gain access to the main power switches SW1 and CB1.4. Turn the rot...

Operating Procedures 53 6.13 Inserting One Module into a Multi-Module System This procedure is indicated to reintegrate 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 sys- tem has been commi...

Operator Control Panel and Display 54 7.0 O PERATOR C ONTROL P ANEL AND D ISPLAY 7.1 Introduction The operator control panel and display is located on the front door of the UPS. The panel is the access point for operator control and monitoring of all measured parameters, UPS and battery status and o...

Operator Control Panel and Display 55 7.1.1 Mimic Power Flow The LEDs mounted on the mimic flow chart represent the various power paths and current UPS oper- ational status. 7.1.2 Audible Alarm (Buzzer) UPS activity is accompanied by the following sounds Table 12 Rectifier indicator—1 Green Rectifie...

Operator Control Panel and Display 56 7.1.3 Direct Access Push Buttons (Keys) Press and hold Direct Access key briefly until acknowledged by a single beep. 7.1.4 LCD Monitor and Menu keys The user-friendly and menu-driven 320 x 240 dot graphic LCD monitor displays real time data and at the same time...

Operator Control Panel and Display 57 The function of keys F1 to F4 is shown by a self-explanatory icon as appropriate for the particular window. As shown in Figure 32 above, pressing F1 moves the cursor (resting in “OUTPUT”) from the UPS Menu Window (2) to current record window (4) where it would f...

Operator Control Panel and Display 58 7.1.5 Detailed Description of Menu Items The description that follows refers to the graphic LCD monitor window shown on Figure 32 . UPS System Window: This fixed-pane window displays current time and date and identifies the UPS, its configuration and its status....

Operator Control Panel and Display 59 System Sout (kVA) Sout: Apparent power Pout (kW) Pout: Active power Qout (kVAR) Qout: Reactive power Single unit, no parallel data When configured as a single unit, UPS has only native load, no system load. Battery Battery voltage (V) Battery bus voltage Battery...

Operator Control Panel and Display 60 Current Record Window Keeps a log the events that resulted in the current mode of operation. Ignores transient conditions that have been resolved.Use “page” (F1) and up / down arrow to read the events.For a complete history log, refer to the Records tab of the M...

Operator Control Panel and Display 64 7.3 Prompt (Pop-Up) Windows The prompt window is displayed during the operation of the system to alert the user to certain condi- tions and / or to require user confirmation of a command. 7.4 Dynamic Energy Flow Chart and UPS Help Screen This screen displays a m...

Operator Control Panel and Display 65 7.5 Default Screen Saver This default screen is displayed following at least 2 minutes of operation with no new alarm. After another delay, the backlight turns off. Press any key (F1-F4 or Help) to reactivate the screen. Figure 35 Default screen F2 F3 F4 HELP F1...

Options—For Assembly Inside the UPS Cabinet 66 8.0 O PTIONS —F OR A SSEMBLY I NSIDE THE UPS C ABINET Several items of optional equipment are available for connection to the Liebert NX UPS. These are described in this section of the manual and should be fitted prior to installation. 8.1 Protection 8....

Options—For Assembly Inside the UPS Cabinet 67 8.1.2 Redundant Fan for Power Module In addition, to ensure sufficient cooling power at various operation modes with 100% rated load, a redundant power module fan set can be supplied, thus ensuring continuity of UPS operation even with the failure of so...

Options—For Assembly Inside the UPS Cabinet 68 8.1.3 OC 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 network and in addition the same card will also transmit the sa...

Options—For Assembly Inside the UPS Cabinet 69 8.1.4 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 ...

Options—For Assembly Inside the UPS Cabinet 70 Figure 41 SiteNet MultiPort4 Intellislot pin configuration Table 27 SiteNet MultiPort4 Intellislot pin assignment Pin Assignment Description 1 Low Battery 2 Not Used 3 Not Used 4 Not Used 5 Not Used 6 Not Used 7 Low Battery Common 8 Utility Fail Common ...

Options—For Assembly Inside the UPS Cabinet 71 8.2 OC485 Web Card – Modbus, Jbus, IGM Net The OpenComms 485 Card facilitates SiteScan Web or Building Management Systems monitoring.The RS232 port is used for connection to a personal computer for setting up.The RS-485 port supports IGM Net and Modbus/...

Options—For Assembly Inside the UPS Cabinet 72 8.2.2 Dust Filter for 10-30kVA Installing the two dust filters in the Liebert NX requires only a Phillips screwdriver. Each filter is held in place by a bracket on either side of each filter. To install each filter:1. Open the UPS door and locate the fi...

Technical Specifications 73 9.0 T ECHNICAL S PECIFICATIONS 9.1 Conformity and Standards The UPS has been designed to conform to the following European and international standards: The product standards in Table 29 incorporate relevant compliance clauses with generic IEC and EN standards for safety (...

Technical Specifications 74 Table 32 Mechanical characteristics Rated Power, kVA Unit of Measurement 10 15 20 30 Dimensions, WxDxH mm (in) 600x700x1400 (23-9/16x27-5/8x55) Mass Mass without batteries kg (lb) 180 (397) 204 (450) 204 (450) 210 (463) Finish N/A Pantone 877 (Silver grey) equivalent Beck...

Technical Specifications 75 Table 34 Battery Intermediate DC Circuit Rated Power, kVA Unit of Measurement 10 15 20 30 Battery Bus Voltage VDC Nominal: 480V (VRLA Float charge is 540V) Range: 400V - 616V Number of Lead-Acid Cells Nominal 240 = [40 x 6-cell (12V) blocks] Maximum 264 = [44 x 6-cell (12...

Technical Specifications 76 Table 36 Bypass mains input Rated power, kVA Unit of Measurement 10 15 20 30 Rated AC Voltage 1 VAC 380/400/415 V three-phase four-wire, sharing neutral with the rectifier input and providing neutral reference to the output Rated Current 380V A 15 23 30 45 400V A 15 22 29...

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