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AC Power
For Business-Critical Continuity
Liebert NX™
User Manual
50 and 60 Hz, 30-200kVA, 400V
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TABLE OF CONTENTS 1.0 SINGLE MODULE UPS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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2.4 Battery Power Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 2.4.1 Connection Principles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 2.4.2 Fitting the Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 2.4.3 Connecting the Battery . . . . . . . . . . . . . . . . . . . .
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6.3 Modes of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 6.3.1 Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 6.3.2 Battery Mode (Stored Energy Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 6.3.3 Auto-Restart Mode . . . . . . . . . . . . . . . . . . . . . . . . . . .
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8.3 Prompt (Pop-Up) Windows. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 8.4 Dynamic Energy Flow Chart and UPS Help Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 8.5 Default Screen Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 9.0 OPTIONS—FOR ASSEMBLY INSIDE THE UPS CABINET . . . . . . . . . . . . . . . . . . . . . . . . . .105 9.1 Protect
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FIGURES Figure i Model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Figure 1 Residual current circuit breakers (RCCB) symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 2 Monitoring board (U2) auxiliary terminal block detail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 3 Input dry contacts . . . . . . . . . . . . . . . . . . . . . . . .
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Figure 47 Front view doors open—60-80kVA NX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Figure 48 Cable terminal layout—60-80kVA NX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Figure 49 General arrangement—100-120kVA NX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Figure 50 Front view, door open—100-120kVA NX. . . . . . . . . . . . . . . . . . . .
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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 contacts at X3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 4 Maintenance bypass cabinet interface. . . . . . . . . . . . . . .
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Dear Customer: Please allow us to congratulate you on choosing a Liebert manufactured Uninterruptible Power System. If this is your first Liebert UPS, we cordially welcome you to a lifetime relationship of after-sales support designed to keep your Liebert UPS and your systems permanently at their peak performance. If you already own and use a Liebert UPS, then we are doubly honoured by your decision to continue this valued relationship. Our philosophy is reflected in our mission statement “Kee
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Figure i Model number nomenclature NXa0A0 200 U Feature Set for Region Input & 50/60Hz A0 - EMEA Output Voltage Voltage Code B0 - Aust/NZ 220/380 F Revision C0 - Japan to Base 230/400 U Unit D0 - China 240/415 G Output kVA E0 - Latin Amer NX Product Line F0 - Other UPS Single Module Liebert NXa UPS module ratings: 30 & 40kVA (with internal battery) 60, 80, 100, 120, 140, 160, 200kVA (without internal battery) Example: NXA0A0200U = 200kVA module for Europe and Middle East, 400V/230V output
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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 by the manufacturer (or agent). Failure to do so could result in personnel safety risk, equipment malfunction and invalidation of war- ranty. The Liebert NX has been designed for Commercial/Industrial u
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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 regulations for equipment located in an operator accessible area. Hazardous voltage is present within the UPS and battery enclosure but out of reach of non-ser- vice personnel. Contact with hazardo
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Single Module UPS Installation 1.0 SINGLE MODULE UPS INSTALLATION 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 guide to general procedures and practices that should be observed by the installing engineer. The particular conditions of each site will determine the applicability of such procedures. WARNING ! Profess
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Single Module UPS Installation 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 33). All models in the Liebert NX UPS range are air-cooled with the aid of internal fans. Cold air enters through ventilation grilles at the front of the cabinet for NXa 30-120kVA and through ventilation
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Single Module UPS Installation 1.4 Positioning The cabinet is mounted on four casters for ease of positioning and for moving short distances. Jacking feet are provided to prevent the UPS from moving once it has been wheeled to its final position. For optimal design life, the place chosen must offer: •Easy connection • Enough space to easily work on the UPS • Sufficient air exchange of enough to dispel heat produced by UPS • Protection against atmospheric agents • Protection against excessive hu
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Single Module UPS Installation 1.4.5 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 the equipment for unimpeded passage of person- nel with the doors fully opened. It is important to leave 800mm (31.5") clearance above the UPS to permit adequate circulation of air coming out of the uni
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Single Module UPS Installation 1.5.1 Rectifier and Bypass Input Overcurrent protection must be installed at the distribution panel of the incoming main supply. The protection must discriminate with the power cables current capacity and with the overload capacity of the system (see Table 38). As a guideline, a thermomagnetic circuit breaker, with an IEC 60947-2 trip curve C (normal) for 125% of the current listed in Table 1 is suitable. Split-Bypass—If a split-bypass is used, install separate
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Single Module UPS Installation 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 Figures 43, 48, 52 and 56. WARNING ! Before starting the UPS, ensure that you are aware of the location and operation of the external isolators that connect the ups input/bypass supply to the main
