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AC Power
For Business-Critical Continuity
Liebert NX UPS
User Manual–10-30kVA, 400V, 50/60Hz
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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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.4.1 Connection Principles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.4.2 Fitting the Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2.4.3 Connecting the Battery . . . . . . . . . . . . . . . . . . . . .
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5.5 Battery Protection (settings by commissioning engineer) . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 6.0 OPERATING PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 6.1.1 Power Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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FIGURES Figure i Model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi Figure 1 Residual current circuit breakers (RCCB) symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 2 Auxiliary terminal block detail monitoring board (U2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 3 Input dry contacts . . . . . . . . . . . . . . . . . . . . . . . . .
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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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Figure i Model number nomenclature NXe0A0 010 U Feature Set for Region Input & 50/60Hz Output A0 - EMEA Voltage Voltage Code B0 - Aust/NZ Output kVA 220/380 F C0 - Japan 230/400 U D0 - China 010 240/415 G Revision E0 - Latin Amer 015 to Base Unit F0 - Other 020 NX Product Line 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 cab
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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
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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 as to general procedures and practices that should be observed by the install- ing engineer. The particular conditions of each site will determine the applicability of such proce- dures. WARNING !
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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 30). 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 and hot air is released through the grill
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Single Module UPS Installation 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 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 exc
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Single Module UPS Installation 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 the equipment for unimpeded passage of person- nel with the doors fully opened. It is important to leave of 150mm (5.9") clearance behind the UPS to permit adequate circulation of air coming out of the
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Single Module UPS Installation 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 1A. Figure 1 Residual current circuit breakers (RCCB) symbols To avoid false alarms, earth leakage monitoring devices when used in systems with split-bypass input or when used in paralleled UPS conf
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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 Figure 22. 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 mains distribution
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Single Module UPS Installation 1.6.1 Cable Termination NOTE The operations described in this section must be performed by authorised electricians or qualified technical personnel. If you have any difficulties, do not hesitate to contact our Customer Service and Support Department. See the back page of this manual for contact information. Once the equipment has been finally positioned and secured, connect the power cables as described in the following procedure. Refer to the appropriate ca
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Single Module UPS Installation 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. WARNING ! If the load equipment will not be ready to accept power on the arrival of the commissioning engineer, ensure that the system output cables are safely isolated at their ends. Internal UPS Battery Connection 7. The battery consists of a series string
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Single Module UPS Installation 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 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. The
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Single Module UPS Installation 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 12V 12V 12V 12V X3 J4 J26 J30 J10 X3 Ancillary Control and Alarms X3 IN DRY: Environmental, Battery Ground Fault and Generator Contacts The UPS accepts external signalling from voltage-free (dry) contacts connected to finger-proof, push-in ter- minal X3 IN DRY. Subject to prior softw
