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Liebert® NXCfrom 10 to 20kVA User Manual

1. 19 3 2 Ee do ee 20 3 2 ENVIFOMIMEN tal 20 23 IS FAN AION 2 22 3 Rectifier And Bypass INPUT 22 3 3 2 Battery Input for external esses 24 3 4 lt POWER Cables eto etn op 24 2 4 D Connecting O e o vos TI ep a eu i t EB UNI Uu 25 3 4 2 Connecting and Installing External eene eene 30 3 5 cuin 31 239 POWE M eredi abun RR EE 31 3 5 2 Single UPS Paraimeters eode qoas aedes ves Suus e eed dec Ue SUE 3 3 5 3 NOU ial Mode SEIPESUD 33 Battery Mode 33 CHAPTER 4 PARALLEL UPS INSTALLATION AND COMMISSIONING 34 VE ACN OS ose tect eater cet ee E E n 34 z ogc 6 6 Ui eee ne ne ee eee ee ee
2. 42 CHAPTER S OPERATIQN AND DISPERY PANEL dec eee E RV deb eint eder oue T 43 p VEE oduc ION TORRE 43 STI PED MAIC IOS tios bis b ehe ia ed latu acta a Reels bod e Pbi abra c CRUS 43 51 2 Audible Alarm BUZZ OF sudo tesa ud va 43 5 153 COMTO BURON ee on RE RT E A Dein RE 44 S EAEGD Ana Menu Saad De RR OE ONU n ERO 44 EEMI YDES P 44 cris AE 44 522 2 bia 45 Do Daralt E 45 5 9 Detaled Description 46 BAPTON oim a 48 5 5 WPS Alarri Message 48 CHAPTER 6 UPS OPERATION INSTRUCTIONS iaa 51 IIPS E 51 6 2 Transfer Procedures Between Operation 51 6 2 1 Transfer From Normal Mode To Battery 51 6 2 2 Transfer From Inverter Mode To Bypass 51 6 2 3 Transfer From Bypass Mode To Inverter MOde cccccscsesseseeeeeeeeeeseeeseseeeeeeseeeeeeeeeeceeeeee
3. xxl IE MAINS INPUT 400V 50 60Hz o NT OPE OPE CHARGER COMMUNICATION AND DISP o BAT Pa PORTS PANEL Bat M e o BAT H OUTPUT 3AC N 400V 50 60Hz EXT BATTERY WARNING remove the connection between neutral and earth on the transformer secondary terminal for IT use The customer must install the isolation control device Figure 10 3 UPS with output isolating transformer User Manual 10H52188UM60 Rev 2 09 2012 65 Appendix 1 Abbreviations Appendix 1 Abbreviations AC CSA DC DSP EMC EOD EPO LCD LBS MCB PE RCCB RCD RFI SCR STS UPS VRLA 66 Liebert NXC Alternating current Cross sectional area Direct current Digital signal processor Electromagnetic compatibility End of discharge Emergency power off Liquid crystal display Load bus synchronizer Miniature circuit breaker Protective earth Residual current circuit breaker Residual current detector Radio frequency interference Silicon controlled rectifier Static transfer switch Uninterruptible power system Valve regulated lead acid User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Appendix2 Information for the protection of the Environment Appendix2 Information for the protection of the Environment This unit makes use of components dangerous for the environment electronic cards electronic components and batteries The components remov
4. L N current A 0 0 0 0 0 0 Frequency Hz 0 00 0 00 0 00 L L voltage V 0 0 0 0 0 0 Power factor 0 00 0 00 0 00 NA till ur lg Menu window Keypad window F1 F2 FS F4 HELP Figure 5 3 Primary screen The current icons on top of the F1 F4 and HELP menu buttons give the explanations of each button From any menu in the primary screen pressing the F1 button will return to the Output menu For details about the primary screen refer to 5 3 5 2 3 Default Screen During the UPS operation if there is no alarm within 2 minutes the default screen shown in Figure 5 4 will appear After a short while the LCD backlight will turn off Press any menu button F1 F4 HELP the primary screen will appear again NXC 20kVA 14 30 30 EA EMERSON Network Power Press any button ta return ta the main menu F1 F2 F3 F4 HELP Figure 5 4 Default screen User Manual 10H52188UM60 Rev 2 09 2012 45 Operation And Display Panel Liebert NXC 5 3 Detailed Description Of Menu Items The description in the following refers to the LCD primary screen shown in Figure 5 3 System information window The system information window displays the current time and the UPS name This window is purely for information no settings are adjustments are made here For details see Table 5 5 Table 5 5 System information window Explanation Liebert NXC 020kVA UPS name which stands for Liebert Liebert
5. Output yMains Fr o input d ECO mode jFRC mode Figure 1 7 Operation schematic diagram For the LED indicators introduced in this section refer to 5 1 1 10 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NX Product Introduction 1 5 1 Normal Mode When the mains input is normal the load is provided with voltage stabilized and frequency stabilized power by the inverter and meanwhile the battery is charged In Normal mode the inverter indicators are on green 1 5 2 Bypass Mode If the overload time out inverter or rectifier failure appears during the UPS operation in Normal mode the UPS will transfer to Bypass mode that is the load is powered by the bypass source which comes directly from the mains input if the rectifier is normal the internal charger will charge the battery In Bypass mode the inverter indicators are off In the event of mains failure or mains voltage out of range in Bypass mode the UPS will shut down and stop the output 1 5 3 Battery Mode Upon mains failure rectifier overload or mains voltage out of range the rectifier and internal charger will become inoperative and the battery will supply power to the load through the inverter The inverter indicators are on together with buzzer alarming which notifies you that the UPS is in Battery mode 1 The battery has been fully charged before delivery However transportation and sto
6. 34 4 CONNECTING Power Cables 34 4 3 T Connectingl O Cables aci OP Or 34 4 3 2 Connecting coit oO nbn e be teneis i 36 4 3 3 Connecting external Battery once er nive m mea rv AERE Ot ette 37 4 4 Commissioning Parallel System s ssssssssssssssssssssssssssssssssssssssssssssssseceecccceccecececceecececeeeceseceeeeeeeseeees 39 1 side E dimus ee NP MUNI 39 4 4 2 Parallel System Parameters Setting cccccccccsecccessecceeeeeesccsccccccccecccccceccecccccccececsececcesesesesesscesens 39 4 4 3 Power On Commissioning For Parallel System eeeeeeeeeeeeeeeeen enne nnne nnne nnns 40 4 5 Installation And Commissioning For Double Bus System with common neutral 40 Zo DEO 0 dt datae eto cunda RR RENT E MU MN eM EU MU 40 4 5 2 Installing External Protective Device ceti Inr Rr odeur NOE S ROSE VEU EUR 41 4 5 3 Connecting mobs Pu edid ba 41 AS 4 Cables spedito eo dcm 41 User Manual 10H52188UM60 Rev 2 09 2012 3 Contents Liebert NXC 4 5 5 Setting up the Double Bus System
7. Stopteting Manually stop the test including the maintenance test capacity test and system test Forcing Foringcharge Manually conduct the battery forcing charge Sis Manually stop the battery forcing charge Provide the monitor software version Version Rectifier Version Version Provide the rectifier software version eme ear o Version Provide the inverter software version Keypad The function of menu buttons F1 4 and HELP is shown in icon mode for the current display screen see Figure 5 4 User Manual 10H52188UM60 Rev 2 09 2012 47 Operation And Display Panel Liebert NXC 5 4 Prompt Window A prompt window is displayed during the operation of the system to alert you to certain conditions and or to require your confirmation of a command The prompts and meanings are given in Table 5 7 Table 5 7 Prompts and meanings Wearing SS ee Inverter and bypass supplies are not synchronized and the load transfer between the Transfer with interrupt confirm or cancel bypass and inverter will cause a brief power supply interruption This operation leads to output shutdown i E The bypass is abnormal inverter shutdown will cause the load power off confirm or cancel The number of paralleled inverters already turned on is insufficient to carry the current Turn on more UPS to carry current load load thus more inverters are required The battery maintenance test discharges the
8. Charge the battery for at least 12 hours if the battery hasn t been charged for three months at specified ambient temperature or two months at high ambient temperature 1 Make sure that the safety equipment are complete and that the function is normal especially that the settings of the battery management parameters are normal 2 Measure and record the internal temperature of the battery room 3 Check whether the battery terminals are damaged or hot and whether the cases and the covers are damaged If liquid leakage and damage to the battery are found place the battery in the anti vitriol tank and deal with it according to the local regulations The waste lead acid battery is dangerous waste material It is one of the national emphases to control the waste battery pollution Its storage transportation usage and disposal must follow the national and local law and other criterions about the dangerous waste material and the waste battery pollution prevention According to the related regulations recycle the waste lead aid battery and other disposal methods are prohibited Throwing away randomly the waste lead aid battery and other improper disposal methods can result in serious environment pollution which will be investigated the legal responsibility As the provider of the lead acid battery Emerson has built perfect service network and recycle system for the waste battery to assist users to deal with the waste battery by law
9. Parallel comm Fail Battery float charging Battery status floating charge mode Normal mode Battery mode Check UPS output Battery boost charging Battery status boost charge mode Battery discharging Battery status discharge mode Battery period testing Automatic periodic battery maintenance test 20 capacity discharge User initiated battery capacity test 100 capacity discharge User initiated maintenance test 20 capacity discharge Reconnect the battery and check the battery wiring Check the battery and battery wiring UPS is off when the battery discharges completely the inverter will automatically start after the mains is uto star restored REC FLASH UPDATE Ongoing update of rectifier firmware INV FLASH UPDATE Ongoing update of inverter firmware MONITOR FLASH Ongoing update of monitor firmware UPDATE DSP software error Inverter software does not match the rectifier software Operation invalid and Alarm combination when the two alarms appear at the same time the UPS I O cable connection mode is not Bypass unable to trace suitable with the setting mode 3 in 3 out or 3 in 1 out Note If the alarm is caused through setting the software value by Emerson authorized engineer and you wish to change the setting values please get in touch with the Emerson local customer service center 50 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC UPS Operation Instructions Chapter6 UPS Op
10. Storage If the UPS and or battery is to be stored for any length of time before being installed it must be kept indoors in a cool dry well ventilated environment The ideal battery storage temperature is between 20 and 25 C During the battery storage the battery must be periodically charged according to the battery instructions You can connect the UPS to the mains temporarily when charging the battery so as to charge the battery for battery activation 3 2 3 Installation Tools The tools must be insulated User Manual 10H52188UM60 Rev 2 09 2012 2 Single UPS Installation And Commissioning Liebert NXC 3 3 External protection devices This device is equipped with manual switches intended only for Service Bypass and Internal Service operations It is therefore essential that the customer install external protection devices at the installation site These must be installed near the unit and labeled as the line power separation device for the UPS see IEC EN 62040 1 The following label must be displayed on all switching devices installed in the same electrical system as the UPS even when they are located far from the area where the system is located according to European standard IEC EN 62040 1 MAKE SURE THE UNINTERRUPTIBLE POWER SYSTEM IS ISOLATED BEFORE WORKING ON THIS CIRCUIT Use of differential protection devices N Note Differential Current Breakers The UPS does not require differential protection device
11. DO GOLD aes output NXC port 3 10mA status Port Signal Who supply the Rated Maximal resistance Maximal resistance l P type power of signal voltage of EPO_NO of EPO_NC Input port of remote EPO NXC port 4 12V DC 100hm 100hm Dorem Signal Who supply the Rated voltage and Rated voltage and P type power of signal current for NO contact current for NC contact 5 Or P Il output External 5A 250V AC 24V DC backfeed User Manual 10H52188UM60 Rev 2 09 2012 55 Communication Liebert NXC Description of the dry contact ports S_ALARM The pen level is 12V when the system alarms 7 1 Um oe signal level is 12V when the system runs in battery mode um 1 m a BYPASS Hi level is 12V when the system runs in bypass mode 2 8 NC EPO activated when opened to 4 2 4 2 12V EPO activated when opened to 4 1 4 Input port of remote EPO ES pP 12V EPO activated when shorted to 4 4 m IN EPO activated when shorted to 4 3 Bypass backfeed protection relay normally open Closes when BFP_O short circuit of bypass silicon controlled rectifier SCR leads to Output port of bypass backfeed packeed 33 es The midde point ofthe bypass Backfeed protection tday ss ome Bypass backfeed protection relay normally open Opens 5 3 BFP C PM when short circuit of bypass SCR leads to backfeed Note 1 and 2 or pin3 and pin4 of the dry contact port 4 reserves the corresponding terminals for configuring the REP
12. Contact Emerson or the nearest service center for the detailed information of the recycle system about the waste battery Emerson is not liable for the environment results caused by failure to comply with the notices in this section or to use the waste battery recycle system provided by Emerson 58 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Maintenance 8 3 Cleaning UPS Clean the UPS periodically especially the ventilation holes to ensure free airflow inside the UPS If necessary clean the UPS with a vacuum cleaner Confirm that the ventilation holes are unobstructed 8 4 Checking UPS State It is recommended to check the UPS operation status once every half year Check the following items 1 Check if the UPS is faulty Is the FAULT indicator on Is the UPS giving any alarm 2 Check if the UPS is operating in Bypass mode Normally the UPS operates in Normal mode if it is operating in Bypass mode you should find out the reason such as operator intervention overload internal fault and so on 3 Check if the battery is discharging When AC mains is normal the battery should not discharge if the UPS operates in Battery mode you should find out the reason such as mains failure battery test operator intervention and so on 8 5 Checking UPS Functions UPS functional check procedures may cause power interruption to load It is recommended to check the UPS functions once every half year Backup the load da
13. 1 Configuration of the UPS with external maintenance bypass In the case of UPS installation that use the customer s power distribution system to isolate the UPS from AC power it is necessary to open the external input MCB If the mains and bypass are independently powered close the two input MCBs Open the maintenance bypass input in order to prevent the physical injury EPO switch is designed to switch off the UPS in emergency conditions such as fire flood The system will turn off the rectifier inverter and stop powering the load immediately inverter and bypass output included and the battery stops charging or discharging If the mains input is present the UPS control circuit will remain active however the output is opened To remove all mains power from the UPS the external input switch should be disconnected 6 5 Auto Restart When the mains power failure the UPS draws power from the battery to supply the load until the batteries end of discharge is reached then the UPS will shut down The UPS will automatically restart and recover output power supply After the mains power is restored The UPS Auto Restart function is enabled After the Auto Restart is delayed default 10 minutes During the Auto Restart delay the UPS will charge the battery to provide a safety margin for equipment shutdown if input power fails again If the Auto Restart function is disabled you can restart the UPS manually by pressing
14. ALARM CLEAR button can silence the alarm but the alarm message of the the LCD does not disappear until the alarm status is cleared 2 Close the maintenance bypass MCB QS3 on the UPS rear panel and the maintenance bypass can supply power to the load If you wish to maintain the UPS module open the battery MCB 056 057 and you should wait 10 minutes for the internal DC bus capacitance voltage discharging 3 Disconnect the main bypass input switch and output switch MCB QS1 QS2 and QS4 ution 1 When the UPS is in Maintenance Bypass mode the load does not have the mains abnormal protection 2 After the UPS transfers to the maintenance bypass the UPS is not in operation and the LCD is not displayed and only the user terminal block is electrified Be careful when removing the UPS module for maintainance 6 2 5 Transfer From Maintenance Bypass Mode To Inverter Mode After UPS maintenance you can use this procedure to transfer the load from the maintenance bypass to the inverter As no auxiliary contact information of the maintenance bypass MCB QS3 is introduced into the UPS UPS operation restoration after maintenance must be done strictly following this procedure Failure to observe this may cause damage to the equipment 1 Close the output MCB QS4 on the rear panel of the UPS 2 Close the mains input MCB QS1 and bypass input MCB QS2 on the rear panel of the UPS 3 Wait until the UPS starts to ope
15. O terminal block U1 1 W1 and N1 and PE terminals of the UPS 3 Connect the live lines bypass input phase L1 bypass input phase L2 and bypass input phase L3 and N line respectively to the I O terminal block U2 V2 W2 and N2 terminals of the UPS 4 Connect the live lines output phase L1 output phase L2 and output phase L3 N line and PE line respectively to the I O terminal block U3 V3 W3 and N3 terminals and PE terminal of the UPS 26 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Single UPS Installation And Commissioning UPS 053 BYPASS INPUT MAINS INPUT OUTPUT EXT BATTERY Figure 3 6 3 in 3 out split bypass configuration cable connection 3 in 1 out common source configuration The factory default of this UPS is 3 in 3 out common source configuration Change the power distribution mode of the UPS to 3 in 1 out according to the steps described in the following section Changing power distribution mode Continue the following input and output power cable connection and power on commissioning after confirming that the change has been successful 1 Confirm that the power distribution mode of the main UPS has been changed to 3 in 1 out according to the steps described in the following section Changing power distribution mode 2 As shown in Figure 3 7 attach the self adhesive insulating film accessory on the copper shorting bar 10 and insert the buckles into the correspondin
16. battery completely A prompt screen will Battery will be depleted confirm or cancel appear to require your confirmation Cancelling the test will end the battery discharge and return to the Normal mode System self test finished everything is ok No operation is required System self test finished please check the Check the current alarm message current warnings Enter control password Control password is required for battery test or UPS test Battery self test condition is low please check Battery test condition is not met Please check whether the battery is in boost charge battery state and load level state and the load level is more than 20 Forcing charge condition is low please check The prompt appears when you select the forcing charge command while the forcing battery state charge condition is not met such as no battery charger failure Check the wiring according to the settings After the menu 3 Phase Output or 1 Phase Output is set you can power off the system power off takes effect 3 phase 1 phase completely and then power on the system again after the wiring is changed according output to the settings 5 5 UPS Alarm Message List Table 5 8 gives the UPS alarm message list based on the Event and Records menus Table 5 8 UPS alarm message list Alarm message Description Inverter comm fail Internal communication failure between the monitoring board and the inverter Rectifier comm fail Inter
17. be selected Set the parameter according to the actual power grid Output voltage level 400V E 9 380V 400V 415V can be selected 3 Phase Output or 1 Phase Th Select Three when is 3 Phase Output select Single ree Output when is 1 Phase Output Note output frequency level and output voltage level will be active after power off but will not be displayed on LCD panel the settings will be valid after manual power off The default values of other parameters are listed in Table 3 4 For the parallel system with N X 2 lt N X lt 4 set System Configuration to Parallel Parallel requisite units to N 1 lt N lt 4 Parallel Redundant Units to X 0 x X lt 3 Take the 3 1 parallel system for example set System Configuration to Parallel Parallel requisite units to 3 Parallel Redundant Units to 1 User Manual 10H52188UM60 Rev 2 09 2012 39 Parallel UPS Installation And Commissioning Liebert NXC 4 4 3 Power On Commissioning For Parallel System Power on and commission each UPS of the parallel system respectively namely power on one UPS at a time and other UPS are in the powered down status the specific commissioning procedures are as follows 1 Close the external output MCB and input MCB of one UPS the UPS is powered on Ensure that other UPS MCBs are opened Close the corresponding internal input Output Circuit Breaker bypass MCB and
18. communication The communication ports include Intellislot cards port opto coupled port dry contact port and USB port 7 1 Installing Intellislot cards 7 1 1 Intellislot card Port UPS provides an Intellislot card port see Figure 7 1 which is used to install the communication device options including global connectivity cards and LIFE net adapter The Intellislot card port and USB port can be used at the same time Intelligent card port Figure 7 1 Intellislot card installation Refer to UPS Extended Dry Contact Card User Manual for the installation and operation quide 7 2 Connection cables for dry contact port and opto coupled port The UPS provides two dry contact ports and three opto coupled ports see Figure 1 3 for the specific positions The silk prints of the five ports are 1 2 3 4 and 5 The pin layout of each port is shown in Figure 7 2 and the port description is shown in Figure 7 1 Cable cross sectional 0 1 1 5mm pm pum E uw Q gt gt Z 9 d 9 2 8 2 Z co S 7 a a 4 9 Q Q 2 9 LL eo v c Opto coupled port 1 Opto coupled port 2 Opto coupled port 3 Dry contact port 4 Dry contact port 5 Figure 7 2 Pin layout of dry contact and opto coupled ports Bot Description Signal Who supply the Rated Rated type power of signal voltage current Output port of alarm NXC port 1 12V DC ours NXC port 2 12V DC 10mA status
19. is found please notify the dealer immediately Safety manual User manual Test bulletin e Insulating material 28010935 Copper busbar kit 21500904 1x connector 3 PIN pitch 3 81mm 14120115 3x connector 2 PIN pitch 3 81mm 14120116 e 7 1095 1417230 3 2 Installation Preparation Prior to transportation make sure of the height of any doors are sufficient and there not other obstacles standing in the passage of the UPS Refer to the following for dismantling of machine cabinet Remove outer packaging and side supporting plates first Place dismantled wooden cover in front of the pallet and then fix the wooden cover to the pallet with the hook provided so as to form a ramp push UPS down the ramp Routine maintenance operations may involve removal of front and rear panels Space must be provided to permit the unit to be rolled back and forward Always install the Stabilizing Brackets to enhance the stabilizing of the UPS If the UPS needs to be moved after Stabilizing Brackets have been attached the Brackets must be removed To remove the Stabilizing Brackets unscrew all the nuts and bolts holding it in place and slide it out from under the UPS When the UPS has reached its new position push the Brackets into its down position again and tighten the screws User Manual 10H52188UM60 Rev 2 09 2012 19 Single UPS Installation And Commissioning Liebert NXC Brake Pad wi
20. out the parallel commissioning check whether the connection of the parallel cables is correct and whether the pin1 pin9 are connected Setting parallel addresses The parallel addresses for all UPS in parallel system should be set The parallel addresses can be set through the DIP switch on the UPS front panel see Figure 1 2 Remove the DIP switch cover and set the DIP switch according to Table 4 1 Table 4 1 DIP switch settings Parallel addresses Parallel 14 Parallel 2 Parallel 34 Parallel 4 DIP switch position 36 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Parallel UPS Installation And Commissioning 1 The default setting for DIP switch is 1 However you should set the DIP switch position for the parallel system according to the description listed in Table 4 1 Otherwise the UPS fault will occur 2 The parallel address must be unique for each UPS unit 4 3 3 Connecting external Battery Cables All the UPS in parallel system can either share the battery strings or use battery strings independently Each UPS should be equipped with the independent battery MCB Refer to Table 3 3 for selection of the battery MCB Using battery string independently When each UPS of the pa
21. output MCB of the UPS After closing the UPS external output MCB and UPS internal output MCB the UPS output terminal block the distribution output terminals and load will be live pay attention to the personnal safety to avoid electric shock Note whether it is safe to feed power to load 2 LCD displays the self test screen the fault indicator red and inverter indicator green are on at the same time for about 5 seconds After the self test UPS enters the bypass mode the fault indicator turns on and the buzzer beeps for 1 second 3 After about 30 seconds the rectifier start up is finished and the rectifier runs in normal mode 4 Finish and check the parallel parameter settings 5 Press the ON button for 2 seconds the inverter indicator green is blinking the inverter starts and the inverter indicator turns green 6 If the battery is not connected the fault indicator is blinking If the battery is connected the fault indicator turns off 7 If the UPS is working normally turn off the UPS 8 Repeat the preceding step 1 step7 to power on and commission the other UPS respectively Carry out the parallel commissioning after each UPS is working A Confirm that each UPS has been powered on and working normally commission the parallel system the specific procedures are as follows 1 Close the external output MCB and input MCB and the corresponding UPS internal MCBs of one UPS The UPS is powered on and enters Byp
22. power to the load through the electronic transfer switch 3 If the mains supply is outside the normal operating limits the rectifier PFC circuit boosts the battery voltage and supplies it to the inverter The inverter then converts it into pure sine wave AC power and supplies AC power to the load through the electronic transfer switch 4 After the mains returns to normal state the UPS will automatically transfer from battery mode to Normal mode the mains supplies DC power to the inverter through the rectifier PFC circuit and then the electronic transfer switch supplies AC power to the load User Manual 10H52188UM60 Rev 2 09 2012 9 Product Introduction Liebert NXC 1 5 UPS State And Operation Mode The UPS state and operation mode include Normal mode Bypass mode Battery mode FRC Frequency Converter mode ECO mode Fault state and Maintenance Bypass mode The operation schematic diagrams of Normal mode Bypass mode Battery mode Maintenance Bypass mode ECO mode and FRC mode are shown in Figure 1 7 iBypass input Mains input Output Mains input _ Output Bypass input Normal mode Bypass mode Bypass input m Bypass input ol Ps i n Output Mains input Output Mains input Maintenance Battery mode a Bypass mode 3E Bypass input gant m Mains input jf
23. shorting bar 4 with N1 and N2 terminals and one screw hole of the copper shorting bar 10 6 Connect the output L line N line and PE line respectively to the copper shorting bar 5 copper shorting bar 4 with two N3 terminals and the other screw hole of the copper shorting bar 10 3 in 1 out split bypass configuration The factory default of this product is 3 in 3 out common source configuration Change the power distribution mode of the main UPS to 3 in 1 out according to the steps described in the following section Changing power distribution mode Continue the following input and output power cable connection and power on commissioning after confirming that the change has been successful 1 Confirm that the power distribution mode of the main UPS has been changed to 3 in 1 out according to the steps described in the following section Changing power distribution mode 2 As shown in Figure 3 7 attach the self adhesive insulating film accessory on the copper shorting bar 10 and insert the buckles into the corresponding holes on the copper shorting bar 10 3 As shown in Figure 3 9 short connect the two PE terminals of the I O terminal block of the UPS using the copper shorting bar 10 with insulating film short connect U2 V2 and W2 terminals using the copper shorting bar 7 short connect U3 V3 and W3 terminals using the copper shorting bar 5 short connect N1 and N2 terminals and two N3 terminals using the two copper shorting b
24. system are the same as those of the single UPS The basic parameters of the parallel system refer to 4 4 2 and the detailed parameters can be set through the Service Software for service engineers only For all UPS of the parallel system the requirements of the parameter settings are same 2 The parallel cables form a ring connection Refer to 4 3 2 for details to provide reliability and redundancy for system The intelligent parallel logic provides the user with maximum flexibility For example each UPS in the parallel system can be switched off or on in random order seamless transfer can be achieved between Normal mode and Bypass mode and the transfer is automatically recoverable that is after the overload condition is removed the system will return to the original operation mode automatically 3 The total load of the parallel system can be queried through the LCD of each UPS 4 2 Requirements A UPS system composed of multiple parallel connected UPS units is equivalent to a large UPS system Nevertheless it provides increased system reliability To ensure equal utilization of all UPS units and compliance with relevant wiring regulations the following requirements must be met 1 All single UPS must have the same capacity and must be connected to the same bypass source 2 The bypass input power and rectifier input power must be connected to the same neutral line input terminal 3 If a residual current detector RCD is required
25. the FAULT CLEAR button User Manual 10H52188UM60 Rev 2 09 2012 53 UPS Operation Instructions Liebert NXC 6 6 UPS Reset The EPO action or the following reasons such as inverter overtemperature power off overload battery overvoltage and excessive switching may result in the UPS power off After all appropriate measures have been taken to clear the faults indicated by the alarm message appearing on the LCD you can carry out the following steps to restore the UPS to normal operation state 1 Press the FAULT CLEAR button to make the system exit the EPO state 2 Press the ON button for 2s 1 The rectifier restarts and the bypass supplies power to the load When the rectifier starts the fault indicator blinks When the rectifier runs in normal operation state about 30 seconds later the fault indicator will turn off 2 5 minutes after the overtemperature signal disappears that is when the overtemperature fault is eliminated the rectifier will automatically start 3 After the EPO button is pressed if the mains input is disconnected the UPS will shut down completely When the mains input is available the UPS will start and run in Bypass mode and also the output is available 6 7 Language Selection The LCD menus are available in 17 languages English German Italian French Spanish Portuguese Chinese Japanese Swedish Russian Polish Czech Turkish Arabic Dutch Finnish and Norwegian Procedures for selectin
26. the LBS cable to any LBS port of the two parallel systems respectively as shown in Figure 4 7 The third port on the left is DB9 male port needle shape the fourth port on the left is DB9 female hole shape 1 The appearances of the LBS ports see Figure 1 3 and the parallel ports see Figure 1 3 are the same but the positions are different Be careful when inserting and connecting to avoid incorrect connnection 2 For the double bus system formed by parallel UPS it is recommended to prepare two LBS cables one is used to connect any of the two LBS ports of the two parallel system the other is redundant cable which is used for reliable connection 3 As shown in Figure 4 7 one cable is LBS cable others are parallel cables User Manual 10H52188UM60 Rev 2 09 2012 41 Parallel UPS Installation And Commissioning DB9 male port DB9 female port UPS 1 gt L4 EE IC Es UPS 2 Dn DENE LBS cable UPS 3 UPS4 H L III I iS E Figure 4 7 LBS cable connection 4 5 5 Setting up the Double Bus System parameters Liebert NXC Using the double bus system formed by 1 1 parallel system as an example set System Configuration to Parallel Parallel requisite units to 1 Parallel Redundant Units to 1 Fo
27. 2 Cominaunicationt 3bles coder eret VI Iud 64 10 3 Battery Cables EE t 64 10 4 Liebert NXC Input Transformer Version cccccccccccccceeceeeeeceeeesesseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeesseeeeeeeceeeeeeeeeeeens 65 10 5 Liebert NXC Output Transformer Version ccccssssssssessssssssssessssssssesseeeeeesecseeeeeeeeeeeeeeeeeeeeeeeeeceeeeeeees 65 APPENDIX TABBREVIA NONS Erat our Eno nus ERU RENS PRO S Ra ev c ea oaa ob Ou Fax Orge 66 APPENDIX 2 INFORMATION FOR THE PROTECTION OF THE ENVIRONMENT 67 4 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NX Product Introduction Chapter1 Product Introduction Liebert NXC UPS UPS for short is an intelligent online UPS system with sine wave output developed by Emerson Network Power The UPS offers reliable and high quality AC power to the precision instrument The UPS is suitable for supplying AC power to small scale computer centers networks communication systems automatic control systems and precision instruments This chapter introduces the features model configurations appearance and components operating principle UPS state and operation mode and specifications of the UPS 1 1 Features The UPS features include Compatible with two modes 3 phase and single phase outputs The system wiring must be checked and the pan
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29. AC Power for Business Critical Continuity Liebert NXC from 10 to 20kvA User Manual gt EMERSON Liebert NXC 10 15 20kVA UNINTERRUPTIBLE POWER SUPPLY USER MANUAL 10H52188UM60 rev 2 All rights including rights of translation reproduction by printing copying or similar methods even of parts are reserved Offenders will be liable for damages All rights including rights created by patent grant or registration of utility model or design are reserved Delivery subject to availability Right of technical modification reserved Liebert NXC may differ from the one displayed on the front cover Liebert NXC User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Contents Contents CHAPTER T PRODUCT INTRODUCTIO vatssecanostoxecievswehcacucdsaecdesaandaisdaas desworaguaasdeatnne 5 UM Sr c CP H PE 5 1 2 Model COMIC a tioN S 5 To Appearance And COMPONEN Siia eiit sedan BAe ese 6 1d AWAD DE Ana NGO mee 6 T32 Gui UP ae 6 oed cci 8 14 e 9 1 5 5 State And Operation NW OGG e Pee Duas Ru 10 1 5 W
30. I O cable connections can be configured into four types e3 in 3 out common source configuration factory default e3 in 3 out split bypass configuration e3 in 1 out common source configuration e3 in 1 out split bypass configuration Self distribution The four I O cable connection procedures of the self distribution are as follows 3 in 3 out common source configuration factory default 1 Connect the live lines input phase L1 input phase L2 and input phase L3 N line and PE line respectively to the I O terminal block U1 V1 W1 and N1 and PE terminals of the UPS Short connect U1 and U2 V1 and V2 W1 W2 of the UPS I O terminal block using the copper shorting bar 3 respectively factory default 2 Connect the live lines output phase L1 output phase L2 and output phase L3 N line and PE line respectively to the I O terminal block U3 V3 W3 and N3 and PE terminals of the UPS as shown in Figure 3 5 User Manual 10H52188UM60 Rev 2 09 2012 25 Single UPS Installation And Commissioning Liebert NXC UPS MAINS INPUT OUTPUT EXT BATTERY QS6 3 a ete Hi aia Figure 3 5 3 in 3 out common source configuration cable connection 3 in 3 out split bypass configuration 1 Remove all the copper shorting bars 3 from the UPS I O terminal block 2 Connect the live lines mains input phase L1 mains input phase L2 and mains input phase L3 N line and PE line respectively to the I
31. INONA Mode o cos dp a OO EE a inna a adn db eom uid 11 1 5 2 a 11 1 5 Bakten OGG LIEU RM TUNI cu adum PME 11 1 5 4 ECO Mode For Single UPS System 2 2 22 nennen nennen nennen nnns nsns sane 11 55 ERG Frequency Converter eoa IR PER ESOS 11 125 ort Stake eon op E vM NE idu e EA david e ebd cv E E 11 1 5 Maintenance 465 edet opua Rosas Seance ea lau 12 CHAPTER 2 BATTERY ed Ur dO UE 13 A T Brier introducHON A 13 DPS AN CY 13 23 Battery POWER Cable 14 Pac OV CIN OWN 14 2 3 2 Stalling VINE BALL OTIOS c oe e m n 14 2 33 COMMECLING Batteries sie eost eost o E rrr on ENSE tae 15 2 4 battery aC a uetus uet n oen 18 2 5 eel ML 18 CHAPTER 3 SINGLE UPS INSTALLATION AND COMMISSIONING eene eene eene nnne nnne nnne 19 3 1 Se 19 3 2 PrepaliatiOki
32. NXC 20kVA UPS 12 30 36 Current time format 24 Hours h min s Menu window and data window The menu window displays the menu name of the data window The data window displays the items of the menu selected from the menu window UPS parameters can be browsed and functions can be set through the menu window and data window Details are given in Table 5 6 Table 5 6 Menu window and data window Meu em Bem ENcurent S Neuen A Load Options are displayed in 13 languages Swedish Spanish Russian Chinese Language Language selection Portuguese Polish Italian German French English Dutch Czech and Turkish 46 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Operation And Display Panel Displa Item Explanation ParamSet pey m Display contrast Adjust the LCD contrast the LCD contrast MM DD YYYY DD MM YYYY DD formats be Date format set selecte Date amp time Set Setthedateandtime date and time Settings Comm baud rate Set the communication baud rate I O the USB port Comm 2 baud rate For internal communication only which cannot be set Comm3 baud rate Set the communication baud rate of the SNMP card port Communication address For RS485 communication MEER Single Group Batt Cap Set the total battery capacity according to the configuration Lo Set the battery block Optio
33. O function The REPO device also needs the shielded cable to connect to the normally open closed remote REPO switch between the two terminals If not necessary you should disconnect pin3 and pin4 of the dry contact port 4 or short pin1 and pin2 of the dry contact port 4 Pin1 and pin2 of the dry contact port 4 have been shorted before delivery The EPO action of the UPS will stop the rectifier inverter and static bypass but it cannot disconnect the UPS mains input inside If you want to disconnect the UPS completely just disconnect the upstream input MCB when generating the EPO In emergency conditions close the REPO switch prepared by users to shut down the rectifier and inverter and the UPS is powered off In normal condition the REPO switch cannot cut off the UPS input power If a switch of electronic control tripping function is adopted at the UPS input the REPO switch can help the switch trip and thus cut off the UPS input power The position of the REPO switch is shown in Figure 1 3 and the REPO cable connection is shown in Figure 7 3 EPO IN lt A 12V di EPO NC REPO plug Figure 7 3 REPO cable connection The cable connection procedures are as follows 1 Loosen the 12V and EPO_IN connection terminals of the REPO port 2 Insert the two ends of the copper core cables with the insulation stripped back into the 12V and EPO_IN connection terminals of the REPO port and press down
34. P VIEW BATTERY 1 BATTERY 2 BATTERY 3 BATTERY 4 BATTERY 5 i BATTERY 6 N BATTERY 7 mm 8 Figure 2 1 Internal Battery Cable Connection User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Battery CONNECT THE BATTERY CABLES AS ILLUSTRATED IN Figure 2 2 qd 23 BATTERY STRING 3 q BATTERY STRING 1 Figure 2 2 Internal Battery Cable Connection For safety reasons a female connector has been inserted on male connector of battery shelf disconnect the female connector in order to connect the XBS male connector of the battery shelf to the female connector on the UPS N B The 3 and 4 strings may also be installed in the field during the initial installation User Manual 10H52188UM60 Rev 2 09 2012 17 Battery Liebert NXC 2 4 Battery Maintenance For battery maintenance and maintenance precautions refer to IEEE Std 1188 2005 and the relevant manuals provided by the battery manufacturer 1 Check that all safety devices are present and that they function correctly Check that the battery management parameters are set correctly 2 Measure and record the air temperature inside the battery room 3 Check the battery terminals for damage and heating and ensure that there is no evidence of corrosion Check the
35. Pollution level 9 3 Mechanical Characteristics Table 9 3 Mechanical Characteristics Rated power kVA Item Unit _ 10 10 0 20 OER Dimensions WxDxH WxDxH Dimensions WxDxH mm 500x860x 1240 Net Gross Weight kg 115 145 excluding battery Net Gross Weight kg 215 245 one string of battery Net Gross Weight 315 345 two strings of battery Net Gross Weight kg 415 445 three strings of battery Net Gross Weight 520 550 four strings of battery Protection degree IEC 60529 60 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Product Specifications 9 4 Electrical Characteristics Input Rectifier Table 9 4 Rectifier AC Input Mains Rated power kVA GE UEM NEN O o GAMME ONE GEN Rated AC voltage E 380 400 415 default 400 E Power factor full load 20 99 Q full load gt 0 98 half load half load kVA kVA rated 10 Input power kVA Rep max A om Input current A Der max Harmonic current Harmonic current distortion THDI FL lt 15 3 Note 1 Rectifier operates at any of the rated supply voltages and frequencies without further adjustment At 305 V mains input the UPS maintains the specified output voltage at rated load without discharging a previously charged battery EN IEC 62040 3 EN50091 3 at rated load and input voltage 400V batt
36. age indicated on the LCD to determine which Unit over load or phase is being overloaded 2 If the alarm is true measure the actual output current to verify that the indications are valid Disconnect the unnecessary load if possible Byp abnormal 6 Both bypass and inverter voltages abnormal Load interruption shutdown Inverter over current Inverter pulse width modulation module is over current The phase sequence direction of the bypass voltage is reversed Normally the phase of phase B lags 120 degrees behind phase A and the phase of phase C lags 120 degrees behind phase B B h Verify that the phase rotation of the bypass supply presented to the UPS is correct and rectify it if the fault is found User Manual 10H52188UM60 Rev 2 09 2012 49 Operation And Display Panel Liebert NXC Alarm message Description Load impact transfers A transfer to bypass occurred due to a large step load The UPS will recover automatically Turn on the load in bypass sequential order to reduce the step load of the inverter The load is on bypass power due to the excessive number of transfers that occurred within the last hour The Transfer time out M UPS will recover automatically and will transfer the load to inverter power within an hour Bus abnormal DC bus voltage is abnormal Inverter shuts down Load transfers to bypass Rectifier and inverter are off because the DC bus voltage is too high Check whether there is a fau
37. al 10H52188UM60 Rev 2 09 2012 Liebert NXC Single UPS Installation And Commissioning Select Enabled in Shared Battery according to whether the battery is shared Set System Configuration to Single if the system is single system Select Normal or ECO according to the UPS working mode select 50Hz or 60Hz in Output Frequency Level according to the power grid frequency level Set Output Voltage Level and LBS Function according to the user requirement set Command password to 12345 the default value of Protocol is Velocity select Three or Single in 3 Phase Output or 1 Phase Output as shown in Figure 3 13 NXC 20kVA 14 30 36 Protocol YDN23 YDN23 Velocity 3 Phase Output or 1 Phase Output Three Three Single Settings Figure 3 13 Settings interface 3 3 5 3 Normal Mode Start Up 1 Close the UPS output MCB QS4 the input MCB QS1 and the bypass MCB QS2 on by one The maintenance bypass MCB QS3 must be opened After closing the above mentioned MCBs the UPS output terminal block of the load will be live pay attention to the personnal safety to avoid electric shock Note whether it is safe to feed power to load 2 LCD displays the self test screen the fault indicator red and inverter indicator green are on at the same time for about 5 seconds After the self test UPS enters the bypass state the faul
38. allowed to install and maintain the battery To ensure safety the external batteries are to be installed inside a lockable cabinet or in a purpose designed dedicated battery room so that they are only accessible to qualified maintenance personnel During battery maintenance pay attention to the following items Ensure that the UPS is in maintenance mode The battery block number setting in the background software must be consistent with the actual battery block number The battery complete Ah setting must be done in the background software e f the battery fuses are blown the UPS must be repaired by authorized service personnel The fuses must be replaced using the same type as those that were delivered with the UPS and must be supplied by the same manufacturer Full safety instructions concerning the use and maintenance of UPS batteries are provided in the appropriate battery manufacturers manuals The battery safety information contained in this section relates to key considerations that must be taken into account during the installation design process and might affect the design outcome depending on localized conditions User Manual 10H52188UM60 Rev 2 09 2012 13 Battery Liebert NXC N AN Warning Hazardous battery voltage present behind covers 1 No user serviceable parts are located behind covers that require a tool for their removal Only qualified service personnel are authorized to remove such covers 2 Before
39. ar 4 28 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Single UPS Installation And Commissioning Copper shorting bars Na 5 MAINS INPUT BYPASS INPUT OUTPUT EXT BATTERY Figure 3 9 3 in 1 out split bypass configuration cable connection 4 Connect the live lines input phase L1 L2 and input phase L3 N line and PE line respectively to the I O terminal block U1 V1 and W1 terminals of the UPS one screw hole of the copper shorting bar 4 with N1 and N2 terminals and one screw hole of the copper shorting bar 10 5 Connect the copper shorting bar 8 to one end of the copper shorting bar 7 see Figure 3 9 and connect the live line bypass input phase L to the copper shorting bar 8 6 Connect the bypass input N line to the copper shorting bar 4 with N1 and N2 terminals of the UPS I O terminal block 7 Connect the output L line N line and PE line respectively to the copper shorting bar 5 copper shorting bar 4 with two N3 terminals and the other screw hole of the copper shorting bar 10 of the UPS I O terminal block Before the commissioning engineer arrival if the load is not ready for accepting the power please take good care of the safety insulation located at the end of the output cable After the output cable connection find the label shown in Figure 3 10 on the enclosure of the UPS and put a tick after AC OUTPUT and BYPASS INPUT according to the actual situation for ease of ma
40. ass mode The rectifier starts Press the ON button for 2 seconds the inverter indicator turns on Measure whether the inverter output voltage is normal 2 Close the external output MCB and input MCB and the corresponding UPS internal MCBs of the second UPS Follow the preceding steps to start the inverter of the second UPS check whether there is any alarm on the LCD and confirm that the UPS parallel works normally 3 Follow the methods to start up the inverter of the third or fourth UPS to connect the UPS into the parallel system During the parallel system power on confirm that the external output MCB of each UPS has been closed and that all the inverter outputs of the UPS are connected in parallel 4 5 Installation And Commissioning For Double Bus System with common neutral 4 5 1 Introduction The double bus system consists of two independent UPS systems each UPS system consists of one single UPS or two or more parallel connected UPS The double bus system has high reliability which is suitable for the load with dual input terminals For single UPS input load you can add a static transfer switch STS optional and enable the standard Load Bus Synchronization LBS system Place the UPS side by side and connect the UPS as follows 40 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Parallel UPS Installation And Commissioning The double bus system uses the LBS system to realize the output synchronization of the tw
41. battery enclosure and terminal covers for damage 2 5 Battery Recycling If the battery leaks electrolyte or is otherwise physically damaged it should be placed in a container resistant to sulphuric acid and disposed of in accordance with local regulations Disused lead acid storage batteries are classified as dangerous waste and are critical elements in disused battery pollution control Storage transportation use and disposal of batteries must comply with the national and local laws and regulations on dangerous waste disused battery pollution prevention and other standards In accordance with the relevant national regulations disused lead acid storage batteries must be recycled and must not be disposed of by other methods Illegal dumping or any other improper disposal of disused lead acid storage batteries may cause severe environmental pollution and those responsible may be liable for prosecution As a lead acid storage battery supplier Emerson has created an excellent service network and disused battery recycling system to help customers dispose of lead acid storage batteries legally and properly For detailed information about Emerson s disused battery recycling system please consult the local customer service center or Emerson sales office If the customer disregards these instructions or does not use Emerson s disused battery recycling system Emerson cannot be held responsible for any environmental consequences of the failure to d
42. cally Check Rectifier overtemp PC the environment and ventilation Battery charger fault Battery charger is over voltage Control power 1 fail UPS operates but the control power is not available Mains phase reversed AC input phase sequence is reversed Rectifier overcurrent Rectifier is over current Soft start fail Rectifier cannot start due to the DC bus low voltage 48 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Operation And Display Panel Alarm message Description This alarm is triggered by an inverter software program when the amplitude or frequency of bypass voltage is beyond the normal range The amplitude threshold is fixed at 10 of nominal rating This alarm will automatically recover when the bypass voltage is normal 1 First verify that the bypass voltage and frequency displayed on the LCD are within the selected range Note Bypass unable to trace that the rated voltage and frequency are specified by the Output Voltage Level and Output Frequency Level respectively 2 If the displayed voltage is abnormal please verify the actual bypass voltage and frequency presented to the UPS Check the external power if any fault is found This alarm is triggered by an inverter software program when the amplitude or frequency of bypass voltage is too high or too low The amplitude threshold is fixed at 10 of nominal rating This alarm will automatically recover when the bypass voltage is normal 1 Firs
43. city is recommended LI6020 20kVA User Manual 10H52188UM60 Rev 2 09 2012 5 Product Introduction Liebert NXC 1 3 Appearance And Components 1 3 1 Appearance The UPS device appearance is shown in Figure 1 1 Front view Rear view Figure 1 1 UPS appearance 1 3 2 Components UPS module front panel As shown in Figure 1 2 the UPS module front panel provides ventilation holes operation and display panel LED indicators DIP switch and battery cold start button DIP switch and battery cold start button with protective cover Ventilation hole Operation and display panel Figure 1 2 UPS module front panel 6 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NX Product Introduction UPS module rear panel As shown in Figure 1 3 and Figure 1 4 the UPS module rear panel provides parallel ports Load Bus Synchronization LBS ports Intellislot cards port dry contact ports opto coupled ports USB port and ventilation holes The SIC SNMP card in the Intellislot cards port is optional it is sold separately Parallel port LBS port NE M NM DM BM D CU Intelligent card port with protective cover Dry contact port USB port and opto coupled ports Figure 1 3 UPS module rear panel Figure 1 4 User dry contact and opto coupled connectors Non authorized personnel are prohibited from opening the UPS chassis cover User Manual 10H52188UM60 Rev 2 09 2012 7 Product Intr
44. cleared after about 20 minutes the inverter will start again automatically The UPS will switch to bypass if the alarm is triggered more than one time in 2 hours and a manual power on of the UPS is required to stitch back to inverter working state after the alarm is cleared Note Wait for 20 minutes after the alarm is cleared then Inverter overtemp manual power on will be suceesful 1 high ambient temperature 2 blocked cooling airway 3 any fan failure 4 prolonged inverter overload Fan fault At least one of the cooling fans has failed At least one of the relays of inverter side is open or short circuit This fault is latched until power off for a 3 in Inverter relay fail 1 out system possible causes for relay fault type inverter fuse open inverter IGBT open Bypass STS fail At least one of the static switches of bypass side is open or short circuit This fault is latched until power off Operation invalid Incorrect operation Neighbour bypass STS At least one of the bypass static switches of a UPS unit in parallel system is open or short circuit This fault is fail latched until power off Output fuse fail At least one inverter output fuse failure The inverter shuts down the load transfers to bypass The UPS is confirmed to be overloaded when the load is above 105 nominal rating The alarm automatically recovers after the overload condition is removed 1 Confirm that the alarm is true by checking the load percent
45. d Synchronous 2 ms S inverter Asynchronous 20 ms 40 60 80 100 120 can be set Upper limit 10 15 or 20 default 15 Lower limit 10 20 30 or 40 default 20 Synchronization window ET Rated E 8 Note 1 Factory set to 400V 380V or 415 V selectable by commissioning engineer Bypass voltage tolerance 2 Factory set to 50Hz 60 Hz selectable by commissioning engineer 62 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Product Specifications 9 8 Efficiency Heat Losses and Air Exchange Table 9 8 Efficiency Heat Losses and Air Exchange Rated power kVA Item Unit Overall efficiency 100 Toa Normal mode MEL double conversion EE i ECO Mode EINE RN Battery mode 92 5 92 8 93 Heat losses amp air exchange o 3 Ned W MM _ Maximum forced air cooling L sec 208 front intake rear exhaust Note 400Vac input and output battery fully charged full rated linear load User Manual 10H52188UM60 Rev 2 09 2012 63 Options Liebert NXC Chapter 10 Options This chapter introduces the options of the UPS 10 1 Option list See Table 10 1 for the option list Table 10 1 Option list NXC 10 15 20kVA UPS parallel communication cable LBS Communication cables 00B46158P77 Communication cable 10 2 Communication Cables Communication cable is compulsory in parallel
46. d Commissioning Note for exchanging the UPS Power Module or the Battery Tray a front clearance of 950mm 15 necessary General view Figure 3 1 Installation clearances Note The UPS should be installed only on the concrete surface or other non flammable surfaces UPS room when Battery is integrated A small amount of hydrogen and oxygen will be generated at the end of battery charging therefore you must ensure that the fresh air ventilation of battery installation environment meets the EN50272 2001 requirements The battery ambient temperature should be the constant temperature for the ambient temperature is the main factor to affect the battery capacity and life The battery standard operating temperature is 20 C operation above this temperature will shorten the battery life and operation below this temperature will reduce the battery capacity If the battery average temperature in operation rises from 20 C to 30 C the battery life will be reduced by 50 if the battery temperature in operation exceeds 40 C the battery life will be decreased exponentially In general the ideal ambient temperature of the battery is 15 C 25 C The battery should be kept away from heat and ventilation holes When the UPS uses an external battery you must install a battery protective device such as fuse or circuit breaker near to the battery and use the shortest wiring distance between the protective device and battery connection
47. d fault indicator Table 5 1 gives the indicators description Table 5 1 Description of LED indicators Load power is supplied by the inverter Inverter indicator Green Inverter on starting up synchronizing or standing by ECO mode Inverter not operating General fault such as no battery Fault indicator E etel fault such as inverter fault No fault 5 1 2 Audible Alarm Buzzer The UPS activity is accompanied with the following two different kinds of audible alarms shown in Table 5 2 Table 5 2 Audible alarm description One beep every second Sound is generated when the UPS alarm appears such as AC input failure Sound is generated when the UPS fault appears such as fuse or hardware failure User Manual 10H52188UM60 Rev 2 09 2012 43 Operation And Display Panel Liebert NXC 5 1 3 Control Buttons The operation and display panel provides five control buttons the functions of which are described in Table 5 3 Table 5 3 Description of control buttons Control button Silk print po Description ee to disconnect the load power and close the rectifier inverter static bypass EPO switch and battery Inverter off OFF Used to Used to stop the inverter the inverter Fault recovery on off FAULT Restore aoo UPS function clear fault advance When an audible alarm is active press this button to silence the audible alarm Alarm sound silence on off ALARM CLEAR Pres
48. e 3 1 the recommended min cable CSA is listed in Table 3 2 Select the appropriate cables according to Table 3 1 and Table 3 2 Table 3 1 Max steady state AC and DC current Rated current A UPS rated Mains input current upon battery Battery discharging current at min Gross output current at full load power kVA charging with max ability battery voltage EOD SV Go blocks 5 ea NAMEN QUME QUE NUM MEE gL os lg c DONIS E Yos MUN MU I 31 3 3 9 9 Note When selecting the battery cables according to the current value shown in table the max allowable voltage drop is 4Vdc Do not ring the cables so as to avoid increasing the electromagnetic interference EMI 1 The mains current input of the rectifier and bypass 2 Non linear load switch mode power affects the neutral cable design of output and bypass The neutral cable current may exceed the rated phase current in general 1 732 times as large as the rated current not applicable when 3 in 1 out mode Table 3 2 Single UPS cable CSA unit mm ambient temperature 25 meu Output Bypass PE Battery _ 33 00 4 4 4 4 4 6 4 10 39 1 7 9 DWAQn xo 6 6 6 6 6 J 1 mmn w ww w 9 20KVA 3 in 1 out 25 The UPS is high leakage current
49. e settings 2 For the parallel system used the shared battery strings the Single Group Batt Cap on the Service Software setting of each UPS stands for the total capacity of battery strings and each UPS can calculate the battery capacity itself automatically 3 Close the battery MCB of each UPS 38 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Parallel UPS Installation And Commissioning 4 4 Commissioning Parallel System 4 4 1 Check Before Power On 1 Check and confirm that the power distribution mode of the UPS is correct that the connections of the power cables and signals cable are correct and there is no short circuit 2 Check that the battery installation and cable connection is correct and there is no short circuit and that the positive pole and negative pole of the battery is correct Especially when each UPS of the parallel system shares battery string check these items carefully 3 Check all the working status of the parallel system ensure that the phase sequence of the mains bypass and output of each UPS is correct and consistent that the parallel cable connection is reliable and that the user load is not connected during power on 4 Measure and confirm that the mains voltage and frequency is normal 5 The output terminals of the UPS are energized upon the power on If the load is connected with the output terminals make sure that the power to the load is safe The UPS will be live upon
50. ed must be taken to specialized collection and disposal centers In case of complete unit dismantling this operation shall be carried out by specialized personnel and the unit must be taken to centers specialized in collection and disposal of dangerous substances Hazardous Substances or Elements Announcement Part name PBDE P H 0d PBDE Hexcopperstud o o o o o PA 0 o o o ACcapacitor J gt o o o o o __ fn eem c e magnetic components switch a device when applicable o Means the content of the hazardous substances in all the average quality materials of the part is within the limits specified in SJ T 11363 2006 x Means the content of the hazardous substances in at least one of the average quality materials of the part is outside the limits specified in S T11363 2006 Emerson Network Power Co Ltd has been committed to the design and manufacturing of environment friendly products It will reduce and eventually eliminate the harzardous substances in the products through unremitting efforts in research However limited by the current technical level the following parts still contain hazardous substances due to the lack of reliable substitute or mature solution 1 All solders in the products contain lead 2 Copper alloy contains lead 3 Backlight bulb contains Mercury 4 The ce
51. eeeeeeeeeees 51 6 2 4 Transfer From Inverter Mode To Maintenance Bypass 51 6 2 5 Transfer From Maintenance Bypass Mode To Inverter MOde cccccccceeeeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 52 6 2 6 Operation with the external Maintenance Bypass in parallel 52 6 9 UPS Complete SHEIEdOWL EO Ru eve cate Evae vos eo Suv 53 AEP H 53 RESTI cL 53 P 54 6 7 Language 54 6 0 Changing CurrentDate And eoo estu 54 Control ia Chatten nd ERR 54 CHAPTER 7 COMMUNICATION s cise ss as seis outa 55 7 1 Installing Intellislot ase 55 1 1 er To rez ra SO HM ER 55 7 2 Connection cables for dry contact port and opto coupled 55 7 2 Connecting USB Communication GER eset arai eroe evt tematic 57 CHAPTER amp MAINTENANCE tone R
52. el setting must be conducted manually Up to 4 units maybe connected in parallel in order to form a n 1 redundant parallel system e High frequency double conversion topology with high input power factor wide input voltage range and output immunity to grid interference thus suitable for use in areas with unstable mains supply e High power density e Full digital control technology based on digital signal processor DSP to achieve high system reliability with self protection and fault diagnosis functions e Intelligent battery management to extend the battery life Operation and display panel with both LCD and LED indication to help you learn about the system operating state and operating parameters Capable of ECO power supply mode which helps you save energy to the maximum extent e Flexible network management with Emerson monitoring software e Fan fault self test and automatic recognition functions SNMP card option providing network communication function Can be connected to multiple battery strings in order to increase autonomy when in battery supply mode 1 2 Model Configurations Three power ratings are available for Liebert NXC UPS 10kVA 15kVA and 20kVA The model configurations are shown in Table 1 1 Table 1 1 Model configurations 116010 10kVA 16015 15kVA For single UPS system for 1 1 parallel system and above 1 1 parallel system the external battery cabinet 15k with larger capa
53. equipment it is not recommended to configure the MCB with leakage current protection function Table 3 3 UPS MCB selection Recommended capability of input Input interface Battery MCB Output interface a 3 in 3 out 3 in 3 out Terminal block block DC DC35A Terminal block 3 in 1 out Terminal block ee 63A 1P DC a Terminal block 15kVA 3 in 3 out Teminal block E EM EM DC 63A Terminal block 15kVA 3 in 1 out 80A 1P Terminal block 50 Terminal block a ut Temi St Terminale Note The 3 in 1 out MCB 125A is used to connect the bypass input upon split bypass configuration The main MCB 63A can be used only upon common source configuration 24 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Single UPS Installation And Commissioning 3 4 1 Connecting I O Cables The power cables of the UPS should be connected through the I O terminal block located on the UPS rear panel Figure 3 4 gives the terminal layout of the I O terminal block 3 in 3 out max cable cross sectional area 16mm 3 in 1 out with copper shorting bars n 4 5 7 8 10 max 25mm BAT N3 U3 V3 W3 PE PE 1 2 U1 U2 V1 V2 1 W2 BATN ao0000000000000000026 Screw terminal M6 OUTPUT MAINS INPUT BYPASS INPUT EXT BATTERY Figure 3 4 Terminals layout of the I O terminal block Power distribution mode According to the user s requirements the
54. er The battery backup time that is the time that the battery can continue to supply the load for when the mains supply is interrupted depends on load level and the ampere hour capacity of the batteries Therefore it may be necessary to connect several battery strings in parallel The NXC UPS includes a battery compartment that can accommodate the internal batteries In the case of UPS configurations without internal batteries the unit must be connected to an external battery cabinet The external battery is fitted with a protective device that can be used to isolate the battery in the event of maintenance work This device is mounted inside or in close proximity to the battery cabinet 1 The external battery cabinet for the UPS can hold up to 128 12 V batteries 2 It must be possible to disconnect the battery from the UPS when carrying out maintenance or service work The fuse holder can be switched on or off manually 3 The requirements of the EC directives are satisfied when battery cabinets are used with original accessories If alternative batteries are used you must ensure that the applicable EC directives are met and declare conformity 2 2 Safety Take special care when working with the batteries associated with the UPS When all the blocks are connected together the battery string voltage can be up to 460 Vdc This is potentially lethal Please follow the precautions for high voltage operation Only qualified personnel are
55. er according to the actual power grid Output frencency level 50Hz X 50Hz 60Hz can be selected 380V 400V 415V can be selected 3 Phase Output or 1 Phase Th Select Three when is 3 Phase Output select Single when ree Output is 1 Phase Output Note output frequency level and output voltage level will be active after power off but will not be displayed on LCD panel the settings will be valid after manual power off The parameter descriptions and default values of the other parameters are listed in Table 3 5 you can set the parameters according to the actual requirements User Manual 10H52188UM60 Rev 2 09 2012 3 Single UPS Installation And Commissioning Liebert NXC Table 3 5 Parameter descriptions and default values Display Parameters Notes Default value ParamSet E M Y and TOM D formats can be selected eni secession Set the communication baud rate of the SNMP card Comm3 baud rate Dor 9600 Communication address For For 5485 communication communication Set i co NE parameter according to the actual total Single Group Batt Cap paene 0014 y Set total _Settotal battery number number Peas Care Naval E Temp Compensation tmbedordsbid x Batt Temp Sensor Postion Setthe postion ofthetemperaturesensor x Each UPS in parallel system shares the battery s
56. eration Instructions This chapter gives a detailed description of the UPS operation procedures During the operation the buzzer alarm may appear at this point you can press the ALARM CLEAR button to silence the audible alarm AN Warning hazardous mains and or battery voltage exists behind the protective cover No customer operation parts are located behind the protective covers that require a tool for removal Only qualified service personnel are authorized to remove such covers 6 1 UPS Start Up The start up procedures can be performed after the installation is finished the system has been commissioned by authorized engineer and the external input MCBs are closed This procedure results in mains voltage being applied to the UPS output terminals Confirm that the load power is safe if there is a load to be connected with the UPS output terminal Ensure that the load is isolated from the UPS output terminals if the load is not ready for accepting the power The start up mode of the single UPS includes normal mode start up and battery mode start up refer to 3 5 3 and 3 5 4 for details For the detailed information of the parallel UPS refer to 4 4 3 6 2 Transfer Procedures Between Operation Modes The Inverter operation mode include Normal mode mains inverter and Battery module battery inverter 6 2 1 Transfer From Normal Mode To Battery Mode In the event of mains failure the UPS will transfer to Battery mode I
57. ery cables between the UPS cabinet and the battery cabinet The shielding must be connected to both the UPS and the battery cabinets 3 Make the ground connections PE 4 When multiple battery strings are used they must be connected in series and then in parallel Before applying load and commencing power up be sure to measure the total voltage of the battery strings and make sure that it is correct The negative and positive terminals of the battery must be connected to the corresponding negative and positive battery terminals of the UPS in accordance with the labels on the battery and the UPS Reverse battery connection may result in explosion fire damage to the battery damage to the UPS or personal injury 5 After connecting the battery cables install an insulating shroud for each terminal 6 The bending radius of the cable is to be larger than 10D where D is the outer diameter of the cable 7 After connecting the cables do not pull on the battery cables or the cable terminals 8 Do not cross the battery cables during connection and do not tie the battery cables together 9 To connect the cables for the internal batteries refer to Figure 2 1 and Figure 2 2 To connect the cables for the external batteries refer to the Battery Installation Manual User Manual 10H52188UM60 Rev 2 09 2012 15 Battery Liebert NXC ARRANGE THE BATTERIES AND CONNECT THEM AS ILLUSTRATED IN Figure 2 1 16 BATTERY SHELF a TO
58. ery charged EN IEC 62040 3 EN50091 3 at rated load and input voltage 400 battery charging at maximum rated power 9 5 Electrical Characteristics Intermediate DC Circuit Table 9 5 Battery Rated power kVA Item Unit Battery bus voltage Nominal 384 VRLA float charge is 436 V range 300 to 576 Other possible 30 34 36 38 40 values ica s Vl 2 27 selectable between 2 2 V cell and 2 3 V cell oat voltage VRLA Constant current and constant voltage charge mode pple voltage Vo 2 35 selectable between 2 3 V cell and 2 4 V cell ce Boost voltage VRLA Constant current and constant voltage charge mode Programmable automatic trigger or inhibit of boost mode Quantity of lead acid blocks Float boost current trigger 0 050 C10 selectable between 0 001 and 0 070 Boost float current trigger 0 010 C10 selectable between 0 001 and 0 025 Boost control 24h safety time timeout selectable between 8h and 30h Boost mode inhibit also selectable Lower limit 1 63 selectable between 1 60 V cell and 1 67 V cell Upper limit 1 75 selectable between 1 67 V cell and 1 85 EOD voltage os VRLA Automatic inverse EOD voltage x discharge current mode the EOD voltage increases at low discharge currents charging current adjustable Note At low input voltage the UPS recharge capability increases as the load decreases up to the maximum capacity indicated Max currents
59. f you wish to transfer the UPS from Battery mode to Normal mode you should wait few seconds for mains input recovery 10 seconds later the rectifier will restart automatically and the rectifier will restore the power 6 2 2 Transfer From Inverter Mode To Bypass Mode In Inverter mode press the OFF button for 2 seconds you can transfer the UPS to Bypass mode In Bypass mode the load accepts the power not from the pure power generated by the inverter but from the mains power directly For the detailed information of the Normal mode Bypass mode Battery and Maintenance Bypass mode please refer to 1 5 6 2 3 Transfer From Bypass Mode To Inverter Mode In Bypass mode press the ON button for 2 seconds After the inverter runs in normal state the UPS transfers to Normal mode 6 2 4 Transfer From Inverter Mode To Maintenance Bypass Mode When the UPS is running in Normal mode you can use this procedure to make the load transfer from inverter output to maintenance bypass User Manual 10H52188UM60 Rev 2 09 2012 51 UPS Operation Instructions Liebert NXC Before performing this procedure you should check the LED information first and make sure the bypass is normal and inverter synchronized Otherwise it may result in the load power interruption for a while 1 Press the OFF for 2 seconds The inverter indicators are off and the buzzer alarms The load transfers to the static bypass and the inverter shuts down Press the
60. fore use personal protective equipment such as goggles rubber gloves and an apron when working on the battery The diluted sulfuric acid may cause blindness if it enters the eyes and burns if it comes into contact with the skin 11 The battery will be affected by shorting electrolyte dry up or positive pole plate erosion at the end of its life If it is still used in this state thermal runaway bulging or electrolyte leakage may occur Please replace the battery before it reaches this state 12 Before connecting or disconnecting the battery connection cables please isolate the charging power 13 Check if the battery has been unexpectedly earthed If this is the case remove the earth connection Contact with any part of the earthed battery may result in an electric shock 2 3 Battery Power Cable 2 3 1 Overview Please install and connect the batteries according to the following description and graphic representation 2 3 2 Installing the Batteries 1 Before installation check the batteries for signs of damage inspect and count the accessories and carefully read this manual and the user manual or installation instructions provided by the battery manufacturer 2 There must be a clearance of 10 mm between the vertical sides of the batteries to allow for the flow of air around the batteries 3 A sufficient amount of clearance must be maintained between the battery top and the underside of the layer above it to facilitate batte
61. g holes on the copper shorting bar 10 Copper bar 10 pem eet d IF Ej T at II i 2 IL cor Lot E a TE 1 Buckle Insulating film Assembling Completed status Figure 3 7 Attaching the insulating film to the copper shorting bar 10 3 As shown in Figure 3 8 short connect U2 V2 and W2 terminals using the copper shorting bar 7 short connect the PE terminals of the I O terminal block of the UPS using the copper shorting bar 10 with insulating film short connect U3 V3 and W3 terminals using the copper shorting bar 5 short connect U1 and U2 terminals using the copper shorting bar 6 short connect N1 and N2 terminals and two N3 terminals using the two copper shorting bar 4 User Manual 10H52188UM60 Rev 2 09 2012 27 Single UPS Installation And Commissioning Liebert NXC UPS Copper shorting bars No 6 No 7 O52 Copper sharing bars 5 it i i HN i i j a cm F MAINS INPUT OUTPUT EXT BATTERY 2 Figure 3 8 3 in 1 out common source configuration cable connection 4 Connect the copper shorting bar 8 to one end of the copper shorting bar 7 see Figure 3 8 and connect the live line input phase L1 to the copper shorting bar 8 5 Connect the live lines input phase L2 and input phase L3 N line and PE line respectively to the I O terminal block V1 and W1 terminals of the UPS one screw hole of the copper
62. g the language 1 From the Output menu press F3 or F4 left or right arrow to select the Language menu 2 Press F5 Enter to move the cursor to the data window of the LCD 3 Use F3 and FA up and down arrow to select the required language 4 Press F5 Enter to confirm 5 Return to the Output menu by repeatedly pressing F2 ESC At this point all texts on the LCD will be displayed in the selected lanquage 6 8 Changing Current Date And Time Procedures for changing the system date and time 1 From the Output menu press F3 or FA left or right arrow to select the Settings menu 2 Press F5 Enter to move the cursor to the data window of the LCD 3 Use and F4 up and down arrows to select Date amp time option then press F5 Enter 4 Move the cursor to the row in which the date and time are displayed then press F5 Enter 5 Use or FA up or down arrows and enter the current time and date information 6 Press F5 Enter to confirm and then press F2 ESC to return to the Output menu 6 9 Control Password The system provides the password protection for the UPS operation control The default password of the background software is 12345 Only through the password verification can you conduct the UPS and battery test operation 54 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Communication Chapter 7 Communication This chapter briefly introduces the UPS
63. he other end to the USB port of the computer After the connection you need to install the USB drive program in the installation disk User Manual 10H52188UM60 Rev 2 09 2012 57 Maintenance Liebert NXC Chapter 8 Maintenance This chapter focuses on the UPS maintenance including the fan maintenance battery maintenance UPS cleaning UPS state check UPS function check 8 1 Fan Maintenance The UPS fans are expected to run for 20000 hours 40000 hours continuously The higher the ambient temperature the shorter the fan life is During the UPS operation please verify the fan status once every half year by confirming that air blows out from the ventilation holes on the rear panel 8 2 Battery Maintenance 1 Never reverse connect the battery otherwise the fire will occur 2 Never open the battery to prevent physical injury because of the electrolyte If you accidentally touch the electrolyte wash the area immediately with plenty of clean water and go to hospital The internal battery module of the UPS is sealed lead acid maintenance free battery The battery life depends on the ambient temperature charge and discharge times High ambient temperature and deep discharge shortens the battery life To ensure the battery life it is required to Keep the ambient temperature ranging from 15 C to 25 Prevent small current discharge Continuous battery operation time exceeding 24 hours is strictly prohibited
64. intenance EMERSON ficteronrhk Power MODEL OUTPUT CAPACITY 20kVA 185kW AC OUTPUT 220 230 240V 18 50 60Hz 90A MAX 380 400 415V 32 N PE 50 60Hz 30AMAX AC INPUT 380 400 415V ig N PE 50 60Hz BYPASS INPUT 220 230 240V 1 50 60Hz 9 LI 380 400 415V 50 60Hz 30A MAX O BATT INPUT 432V 67AMAX SERIAL NO Emerson Network Power Co Ltd X 69 MADE IN CHINA Figure 3 10 Label User Manual 10H52188UM60 Rev 2 09 2012 29 Single UPS Installation And Commissioning Liebert NXC Changing power distribution mode This product is compatible with 3 in 3 out 3 in 1 out factory default 3 in 3 out Change the format according to the following steps if you need to change the power distribution mode e From 3 in 3 out to 3 in 1 out 1 Remove all the copper shorting bars 3 shown in Figure 3 5 of the 3 in 3 out system connect the main input cables only It is prohibited to connect the bypass input cables output cables and battery cables at this stage as shown in Figure 3 11 to UPS Rectifier VO TERMINAL BLOCK Lo GET vd BAT BAT N3 U3 V3 W3 PE PE N1 N2 U1 U2 V1 V2 W1 2 BATN soooooooooooooooooo Mains input cables only Figure 3 11 Main input 2 Remove the EPO jumpers of the dry contact port 4 see Figure 7 2 and 0 3 Power on the system with MCB QS1 Set the system to Single through the LCD
65. ispose of disused battery products correctly 18 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Single UPS Installation And Commissioning Chapter 3 Single UPS Installation And Commissioning This chapter describes the installation cable connection and commissioning of the single UPS Each site has its peculiarity so this chapter provides the guidance with general installation procedures and methods for the installation engineer who should conduct the installation according to the actual conditions The UPS should be installed by a qualified engineer according to the information contained in this chapter If any problem is found please get in touch with Emerson local service center immediately The UPS shall not be powered on without approval of the commissioning engineer For other equipments which are not introduced in this manual the detailed information about mechanical installation and electrical installation are delivered with the equipment J N soe 3 phase 5 line for power input The UPS can be connected to 3 phase 5 line L1 L2 L3 N PE TN and TT AC power distribution system IEC EN 60364 3 3 1 Unpacking Inspection After the UPS arrival you should unpack it and check the following items 1 Visually inspect the UPS appearance for transportation damage If any problem is found please notify the carrier immediately 2 Check the accessories and models against the below delivery list If any problem
66. it must be set correctly and installed before the same neutral line input terminal or it must monitor the protective earth current of the system Refer to Safety Manual 4 The outputs of all single UPS must be connected to the same output bus 5 As the UPS parallel system is not fitted with any auxiliary contact detection devices for the UPS unit output MCB or maintenance bypass MCB Removing the single UPS from the parallel system before maintenance and adding the single UPS into the parallel system after maintenance must be conducted strictly following the procedures provided in 6 2 Failure to observe this may affect the load power supply reliability 4 3 Connecting Power Cables For each single UPS of the parallel system you need to configure the MCB and cable respectively refer to 3 4 for the specification 4 3 1 Connecting I O Cables The UPS power cables are connected to the I O terminal block of the UPS rear panel the layout of the I O terminal block is shown in Figure 3 4 Power distribution mode The I O cable connections are divided into four types 3 in 3 out common source configuration factory default 3 in 3 out split bypass configuration 3 in 1 out common source configuration 3 in 1 out split bypass configuration The input and output cable connection procedures of the four power distribution modes are as follows Distribution for the parallel system 34 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Pa
67. listed are for EOD voltage of 1 67 V cell for 240 cells User Manual 10H52188UM60 Rev 2 09 2012 61 Product Specifications Liebert NXC 9 6 Electrical Characteristics Inverter Output Table 9 6Inverter Output to Critical Load Rated power kVA Item Unit 3 In 3 Out 230Vac 1 3 phase balanced 8 E S S lt 200 ms K duse ea Waxnewrcrentormoinewkad ARMS 88 o Transient voltage response for 100 st 5 within 60ms rated linear load step Total harmonic voltage 0 100 load 2 linear load 5 non linear load Synchronization window Rated frequency 8 Slew rate max change rate of 9 0 6 single UPS 0 2 parallel system synchronization frequency Note Factory set to 400V 380V or 415V selectable by commissioning engineer Factory set to 50Hz 60Hz selectable by commissioning engineer Note that the system frequency can be changed only when the UPS is on bypass It is strictly prohibited to change the system frequency when the UPS is on inverter 3 IEC 62040 3 annex E crest factor 3 1 9 7 Electrical Characteristics Bypass Input Table 9 7 Bypass Input Rated power kVA Item Unit 380 400 415 three phase five wire sharing neutral with the rectifier input and Rated AC voltage MN providing neutral reference to the output 380V Rated current 400V 415V Current rating of neutral cable mm Overload Frequency 50 60 Transfer time between bypass an
68. lt in rectifier DC bus over voltage side If not check whether there is an overload After recovering the fault restart the inverter Bypass over current Bypass current is over limit above 135 rating The UPS just alarms without any action Setting save error Historical records are not saved Reserved Input Disconnect Fault AC mains input neutral line is not checked out Protocol version clash Firmware incompatibility between monitor board and Digital Signal Processor DSP board Manual on Manually turn on the inverter through pressing ON on the operation and display panel Manual off EPO Press the EPO button directly or receive the external EPO command Manually turn off the inverter through pressing OFF on the operation and display panel Transfer confirm Prompt to press the Enter button to acknowledge that an interrupted load transfer to bypass will happen Prompt to press the ESC button to avoid that an interrupted load transfer to bypass will happen Press FAULT CLEAR Press ALARM CLEAR Inverter failed to turn on manually The reason may be the invalid operation maintenance bypass breaker Transfer cancel Fault clear Alarm silence Turn on fail closed or DC bus or rectifier not ready Press FAULT CLEAR or ALARM CLEAR The UPS is in Bypass mode Alarm silence cancle Bypass mode The UPS is in Normal mode The UPS is in Battery mode 1 Whether the EPO terminal is on the dry contact port 4 2 Whether the LCD displays
69. menu Settings gt 3 Phase Output or 1 Phase Output default password 12345 and power off the system completely then power on the system again enter this menu to confirm the setting is valid 4 Power off the system completely and replace the EPO jumpers of the dry contact port 4 and remove the main input cable From 3 in 1 out to 3 in 3 out 1 Remove all copper shorting bars shown in Figure 3 8 and Figure 3 9 of the 3 in 1 out system connect the main input cables only It is prohibited to connect the bypass input cables output cables and battery cables at this stage as shown in Figure 3 11 2 Remove the EPO jumpers of the dry contact port 4 see Figure 7 2 and 0 3 Power on the system Set the system to Three through the LCD menu Settings gt 3 Phase Output or 1 Phase Output default password 12345 and power off the system completely then power on the system again enter this menu to confirm the setting is valid 4 Power off the system completely replace the EPO jumpers of the dry contact port 4 and remove the main input cable 3 4 2 Connecting and Installing External Battery Notes For the installation and commissioning of an external Battery refer to Liebert NXC Battery User Manual 30 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Single UPS Installation And Commissioning 3 5 Single UPS Commissioning 3 5 1 Check Before Power On 1 Check and confirm that the powe
70. n 30 block 32 block 34 block 36 x lt x lt Battery blocks Numb RNS UNEITELDET block 38 block 40 block Shared Battery Each UPS parallel system sharesthebatterystingornot x System Configuration SetheUPssngepsal X PParaleTRequste Units Settheparalelunits Set the ae level ho xw l1 UsFundion Set85Tunction Option NONE SLAVEOFWASTER X _ command password You can change the command password T2345 X Protocol Setthe communication protocoloftheUPS ooo X Set the output system 3 in 3 out or 3 in 1 out This setting can only be carried out after the EPO operation After the setting you must power off the system and confirm that the X system actual wiring mode complies with the setting Power on the system again and the setting can take effect The battery maintenance test will partly discharge the battery to get rough assessment of Battery maintenance test the battery capacity The load ranges from 20 to 100 The battery capacity test will completely discharge the battery to get accurate assessment of Batterycapaciytest Batterycapaciytest test ai Wt 3 in 3 out 3 in 1 out the battery capacity The load ranges from 20 to 100 The UPS self test The user starts this function 5 seconds later a pop window will appear to memes d show the test result
71. nal communication failure between the monitoring board and the rectifier The communication failure between different UPS within a parallel system 1 Check if there are some UPS not powered on in parallel system If so power on these UPS and check if the Parallel comm fail alarm disappears 2 Press the FAULT CLEAR button Battery fault Battery is depleted reserved Battery replaced Battery test failure and the battery should be replaced Before the end of the discharge battery undervoltage pre warning may occur After this pre warning the Battery Saree battery should have the capacity for 3 minutes discharging with full load The time is user configured ranging pre warning e from 3 minutes to 60 minutes Shut down the load in time Battery stop discharge Inverter is off due to the battery end voltage Check the mains failure and try to recover it Mains voltage exceeds the upper or lower limit and results in rectifier shutdown Check the input phase voltage Mains volt abnormal fth tifi of the rectifier Mains undervoltage Mains is undervoltage reduce load to keep running Check the input line voltage Mains freq abnormal Mains frequency is out of the limit range and results in rectifier shutdown Check the input frequency Rectifier block Rectifier failure The rectifier shuts down and the battery discharges The temperature of heat sink is too high to keep the rectifier running The UPS can recover automati
72. o ECT stead 58 Sel Foil Wal UCI AIG Caresser 58 5 2 Battery Mam ena Nee sekos Dto aes caeteris Loon 58 56 9 Cleaning UPS 59 e tha ies catia o p bm REA iota Pda 59 8 5 Checking eid EM ud So 59 CHAPTER 9 PRODUCT SPECIFICATIONS tu C eU Or Na un 60 cedes 60 9 Characteristics A 60 9 3 Mechanical Characteristics decet hae ub avete in e Ha Rut QV DO 60 9 4 Electrical Characteristics Input Rectifier nnn nnn nhan nana nana ananas 61 9 5 Electrical Characteristics Intermediate DC Circuit 61 9 6 Electrical Characteristics Inverter OutpuUt eeeeeeeeeeee eee nnnn nana nana nana anna aas 62 9 7 Electrical Characteristics Bypass Per Lead Deest utut 62 9 8 Efficiency Heat Losses and Air Exchange o Cerere ees 63 feme TES 64 DES 64 TO
73. o independent or parallel UPS systems One is the master system and the other is the slave system The operation mode of the double bus system contains master system and or slave system running in normal mode or bypass mode The schematic diagram of the LBS system consisting of 1 1 parallel system is shown in Figure 4 6 Bypass input 7 ypass Output Main input UPS 1 e Main re a O a Bypass F UPS 2 Output Main AX LBS cable Connect to load AX Bypass input Bypass Output Main input UPS 3 e Main 2 O a Bypass UPS 4 Output Main Note UPS1 and UPS2 are master systems UPS3 and UPS4 are slave systems Figure 4 6 LBS system schematic diagram Note For the DIP switch settings and the parallel commissioning refer to 4 3 2 and 4 5 respectively 4 5 2 Installing External Protective Device See 3 3 for details of installation and type selection 4 5 3 Connecting Power Cables In double bus system refer to 3 4 and 4 3 to select the power cables for single UPS and parallel system respectively The bypass input power and mains input power must use the same neutral input terminal The leakage current protective device should be installed before the input terminal 4 5 4 Connecting LBS Cables In double bus system connect the two ends of
74. oduction Liebert NXC 1 3 3 UPS device rear As shown in Figure 1 5 the UPS comprises UPS module Input Output MCBs and I O terminal block UPS MODULE QS4 UPS OUTPUT QS3 MAINTENANCE BYPASS INPUT OUTPUT MCBs QS6 7 INTERNAL BATTERY QS1 PRIMARY MAINS INPUT QS2 BYPASS MAINS INPUT FU1 FU2 Supply fuses for LIFE AC 230V max cables cross sectional area 2 5mm I O TERMINAL BLOCK ils terminals M6 BAT BAT BAT N3 W3 pe pe wo ui v2 vi va wi va x N Figure 1 5 Rear view terminal housing cover removed 8 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NX Product Introduction 1 4 Operating Principle The operating principle of the UPS is shown in Figure 1 6 Bypass input Input filter Mains input 3 Rectifier PFC Battery Figure 1 6 UPS operating principle 1 The UPS is composed of mains input mains and bypass I O filter rectifier PFC charger inverter bypass battery DSP controller System Control Power and UPS output 2 Under normal mains supply conditions the rectifier switches on and the charger supplies recharge power to the battery Before the UPS is switched on the load is connected directly to the mains supply via the Bypass Once the UPS has been switched on the mains input supplies DC power to the inverter via the rectifier PFC section The inverter then converts DC power into pure sine wave AC power and supplies AC
75. onment Do not install the battery in a sealed battery chamber or a sealed room The battery room ventilation must comply with EN50272 2001 as a minimum requirement Failure to follow this instruction may result in battery bulging fire or even injuries 6 The battery must be kept away from heat sources such as transformers or fire sources Do not burn the battery or set the battery on fire as this may result in electrolyte leakage battery bulge fire or explosion 7 Do not connect any conductor directly between the positive and negative terminals of the batteries Remove rings watches necklaces bracelets and other metal objects before working on the batteries and ensure that the tools for example wrenches are insulated Failure to do so may result in battery burning explosion human death or injury 8 Do not dismantle modify or damage the battery This may result in a battery short circuit electrolyte leakage or even injury 9 Clean the battery enclosure with a damp cloth To avoid any static or arcing do not use dry cloths or dusters to clean the battery Do not use organic solvent such as thinner gasoline or volatile oil as this may crack the battery enclosure In the worst case scenario this may result in a fire 10 The battery contains diluted sulfuric acid In normal use the diluted sulfuric acid is absorbed by battery the baffle and pole plates However if the battery is damaged the acid may leak from the battery There
76. pass mains the UPS will shut down and interrupt the supply of energy to the load in the event of an inverter failure or UPS overtemperature In the Fault state the fault indicators will turn on the buzzer will keep beeping and the corresponding fault information will be displayed on the LCD User Manual 10H52188UM60 Rev 2 09 2012 11 Product Introduction Liebert NXC 1 5 7 Maintenance Bypass Mode If the maintenance and repair for UPS is needed you can switch the load to the Maintenance Bypass through maintenance bypass MCB Miniature Circuit Breaker and the power to the load is uninterrupted The maintenance bypass Miniature Circuit Breaker is located on the rear panel of the UPS device and the capacity meets the requirements of total load capacities If the UPS has malfunctions and can not work normally please get in touch with the nearest Emerson branch office or local service center It is prohibited to repaire by yourself as the personnel injury and damage to the equipment may occur 12 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Battery Chapter2 Battery This chapter provides relevant information about the battery including a short introduction and information on battery safety battery power cables battery maintenance and recycling 2 1 Brief Introduction The UPS battery string consists of batteries connected in series in order to supply the rated DC input voltage for the UPS invert
77. r distribution mode of the UPS is correct that the connections of the power cable and signal cable are correct and there is no short circuit 2 When using an external Battery check that the battery installation and the cable connections are correct and that the connection cables are connected correctly to the positive and negative battery poles 3 Measure and confirm that the mains voltage and frequency are normal 4 The output terminals of the UPS are energized upon the power on If the load is connected with the output terminals make sure that the power to the load is safe 3 5 2 Single UPS Parameters Setting Power on the UPS according to step 1 step 4 in 3 5 3 it is prohibited to start the inverter For display setting press the menu key to enter the function setting option according to Table 3 4 The other settings can be done only by service software ParamSet Table 3 4 Single UPS parameters setting Display Parameters Default value Parameters setting ParamSet Setting Single Group Batt Cap 0014 Set the parameter according to the actual battery capacity Lo o o l Battery Cells Number Set the parameter according to the actual battery number o oo Set the parameter according to the actual batter Equalize Charge Allowed Enabled j y characteristic ECO ECOMode J Normal Normal Set the parameter according to the actual power arid Output voltage level 400V g P g Set the paramet
78. r the master system set LBS Function to MASTER For the slave system set LBS Function to SLAVE Ensure that the setting for 3 Phase Output or 1 Phase Output of each single UPS in the double bus system is same as shown in Figure 4 8 Unit 1 NXC 20kVA 14 30 36 Protocol YDN23 YDN23 Velocity 3 Phase Output or 1 Phase Output Three Three Single Settings Figure 4 8 Setting interface 42 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Operation And Display Panel Chapter5 Operation And Display Panel This chapter introduces the functions and use of the components on the UPS operation and display panel and provides LCD display information including the LCD screen types detailed menu messages prompt windows message and UPS alarm list 5 1 Introduction The operation and display panel is located on the front panel of the UPS Through the operation and display panel you can conduct the UPS operation control and query UPS parameters UPS and battery states and alarm message As shown in Figure 5 1 the operation and display panel provides LCD menu buttons F1 F4 HELP LED indicators inverter indicator and fault indicator control buttons FAULT CLEAR ON OFF ALARM CLEAR EPO LCD Fault indicator Inverter indicator Menu buttons Control buttons Figure 5 1 Operation and display panel 5 1 1 LED Indicators The LED indicators are composed of inverter indicator an
79. rage will inevitably cause some capacity loss Therefore it is required to charge the battery for eight hours before putting the UPS into operation so as to ensure the adequate backup time for battery 2 The battery cold start can also be used to start the UPS from the Battery charged mode upon mains failure Therefore the battery power can be used independently for improving the system availability to some extent 1 5 4 ECO Mode For Single UPS System Only In ECO mode the load is powered by bypass when the bypass voltage is normal and the load is powered by inverter when the bypass voltage is abnormal ECO mode is an energy saving operation mode For power equipment that is immune to power grid quality you can use the ECO mode for power supply through bypass to reduce the power loss 1 In ECO mode if the bypass failure or abnormal bypass voltage appears when the output is not overloaded the UPS will transfer to Normal mode However if the bypass failure or abnormal bypass voltage appears when the output is overloaded the UPS will not transfer to Normal mode but shut down the bypass 2 In ECO mode the efficiency of the UPS is up to 98 1 5 5 FRC Frequency Converter Mode This mode can be used for mains and load with different frequencies 60 50Hz or 50 60Hz 1 5 6 Fault State In Normal mode the UPS will transfer to Bypass mode in the event of an inverter failure or UPS overtemperature In Battery mode with no by
80. rallel UPS Installation And Commissioning The diagram of three UPS parallel system is shown in Figure 4 1 Refer to Power distribution mode in 3 4 1 for the cable connection of each UPS Refer to 3 4 for the measurement of the input output and battery cables Qin Qin Qin UPS1 UPS UPS3 Qin Ext Supplied by others Byp Bypass input Mains input Bypass input Mains input i n L1 L2 L3 N 11 12 13 Li 12 L3 N N ES ESTEE ES ES r EB 45 e mm r EB 48 ap um K oe r GE GE GERD amp Um i 4 4 r r 4 i AE eae I I al int al m is n L1 L2 L3 N UPS 1 output L1 L2 L3 N UPS 2 output L1 L2 L3 N UPS 3 output Qout UPS1 Qout UPS2 Qout UPS3 Qout BYP Qout of allUPS Output distribution Figure 4 1 1 NUPS System with External Maintenance Switch For 1 N installations an external bypass rated for the total system load must be installed and the UPS internal maintenance bypass must be locked to prevent it from being operated When planning and installing the system the power cables between input distribution and the Bypass and rectifier must be the same length 10 The same applies to the power cables between the UPS outputs and the parallel connection point on the load side Each UPS m
81. rallel system uses the battery string independently the battery cable connection of each UPS in parallel system is the same as that of the single UPS refer to 3 4 2 The schematic diagram of battery strings in 1 1 parallel system when using battery strings independently is shown in Figure 4 3 Make sure that the LCD settings are correct when using the battery strings independently refer to 4 4 2 for details sixteen Block UPS 1 5 12W _ EI in 5 ch sixteen Block Bat N ws gt 10V aw 12V ssm 12V _ i 1 5 a eat o c sixteen Block UPS 2 8 E v 1 T Ee s 9 EN E NH 12 1 S amp 5 cC sixteen Block Bat N c 1 E aw 12V 12V 12V l 5 d Figure 4 3 Connection principle diagram upon using battery strings independently Sharing battery string Using the shared battery string in parallel system can reduce equipment costs Aw To ensure the abundant backup time of the battery it is recommended to use the external battery cabinet with larger capacity 1 Wiring Power off the parallel system completely disconnect the battery MCBs of all single UPS and then use battery cables refer to 3 4 for the cables and the MCBs to connect N and PE terminals of the battery string respectively to Bat Bat N U
82. ramic materials of the ceramic capacitor the copper terminals and copper leads of metallic film capacity contain lead 5 The glass of resistor contains lead 6 The glass of LCD contains lead and the backlight lamp contains Mercury 7 The lead in the battery is determined by the battery feature and technical levels 8 The insulation monitoring device contains lead and PBDE NOTICE TO EUROPEAN UNION CUSTOMERS DISPOSAL OF OLD APPLIANCES This product has been supplied from an environmentally aware manufacturer that complies with the Waste Electrical and Electronic Equipment WEEE Directive 2002 96 CE The crossed out wheelie bin symbol at right is placed on this product to encourage you to recycle wherever possible Please be environmentally responsible and recycle this product through your recycling facility at its end of life Do not dispose of this product as unsorted municipal waste Follow local municipal waste ordinances for proper disposal provisions to reduce the environmental impact of waste electrical and electronic equipment WEEE For information regarding the scrapping of this equipment please contact your closest Emerson Representative User Manual 10H52188UM60 Rev 2 09 2012 67 Ensuring The High Availability Of Mission Critical Data And Applications Locations Emerson Network Power Via Leonardo Da Vinci 16 18 Zona Industriale Tognana 35028 Piove di Sacco PD Italy Tel 39 049 9719 111 Fax
83. rate in Bypass mode and open the maintenance bypass MCB QS3 on the rear panel of the UPS 4 Press the ON button on the operation and display panel of the UPS and the UPS transfers to Inverter mode 6 2 6 Operation with the external Maintenance Bypass in parallel systems Refer also to Figure 4 1 In parallel UPS systems the internal maintenance bypass switches QS3 must be switched off and locked in this position Ensure that all the internal bypass switches STS are in ON status check status on displays before switching the maintenance bypass switch Qout BYP on There is no interruption in the power supply to the load Ensure that all the internal bypass switches STS are in ON status check status on displays before switching the maintenance bypass switch Qout BYP off There is no interruption in the power supply to the load To disconnect the load switch off the Qout of all UPS switch followed by the external maintenance bypass switch 52 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC UPS Operation Instructions 6 3 UPS Complete Shutdown If you need to shut down the UPS completely transfer the UPS from Inverter mode to Maintenance Bypass mode according to the procedures in 6 2 4 so as not to effect the load during the UPS power off Then if the power to the load is not needed open the maintenance bypass MCB directly as shown in Figure 6 1 e e e e eo Figure 6
84. ry monitoring and maintenance 4 The batteries must be installed from the bottom layer upwards to avoid creating a high center of gravity The battery must be installed properly and protected from vibrations or shock 5 An isolating device shall be fitted as close as possible to the battery in accordance with the local installation requirements 14 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Battery 6 In the case of a parallel UPS system that uses a common battery bank an additional isolating device switch must be installed in the dedicated common battery connection to each individual UPS so that system maintenance can be carried out correctly In any event we advise against using common battery solutions as they reduce the reliability of the system 7 Measure the battery voltage and calibrate the battery voltage after starting up the UPS 2 3 3 Connecting the Batteries 1 Check that the battery fuses are not inserted These must be fitted during commissioning NOT during installation 2 If the battery cabinet is installed on a raised floor or side by side with the UPS on a solid floor the battery power cables and other cables can enter the UPS cabinet through the base of the cabinet The cables for connecting the UPS to the battery cabinets are not included in the delivery They can be provided by the manufacturer upon request For the best interference suppression to reach class C2 EM we recommend using shielded batt
85. s connected ahead of it However when these devices are installed in compliance with local regulations note that separate DCBs in the line power and bypass line power circuits may trip unexpectedly thus interrupting the power supply to the unit Therefore if a DCB must be installed only one should be used for both primary and bypass inputs In parallel distributed systems only one common differential protection device should be installed ahead of the point where the line divides into the UPS primary and bypass line power circuits If separate DCBs are installed in different configurations they may trip unexpectedly In order to quarantee correct distribution in the neutral cables installation personnel shall make sure that the lengths of the cables are as equal as possible However if the bypass lines lead from sources that are electrically isolated from each other a differential protection device may be installed on each line In this case and in cases when the load is supplied from the Bypass via the Static Bypass Switch the isolated sources are connected in parallel A case bycase analysis should be made as to whether any resulting imbalance between the currents on the Bypass lines is compatible with the respective protection devices 3 3 1 Rectifier And Bypass Input Overcurrent The appropriate overcurrent protective device should be installed at the mains input power distribution and the current capacity of power cable and the sys
86. s this button again can restart the buzzer 5 1 4 LCD And Menu Buttons The operation and display panel is composed of an LCD and five menu buttons F1 F2 F3 F4 HELP Table 5 4 gives the menu buttons function description Table 5 4 Menu buttons function description Functi Function 1 ie ES LCD provides you with the user friendly interface and the 320 x 240 dot matrix image display The menu driven LCD allows you to easily browse through the input output load and battery parameters learn about the current UPS status and alarm message perform functional setting and control operation The LCD also stores up to 512 historical alarm records that can be retrieved for reference and diagnosis 5 2 LCD Screen Types 5 2 1 Start Screen Upon UPS start the UPS executes the system self test and the start screen will appear and remain about 15 seconds as shown in Figure 5 2 EMERSON Network Power E HELP Figure 5 2 Start screen User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Operation And Display Panel 5 2 2 Primary Screen After the UPS system self test the primary screen shown in Figure 5 3 will appear The primary screen is composed of four windows system information window data window menu window and keypad window System Unit 1 NXG 20kVA 14 30 36 Ate information window A L N voltage V 0 0 0 0 0 0
87. ser Manual 10H52188UM60 Rev 2 09 2012 37 Parallel UPS Installation And Commissioning Liebert NXC Bat and PE terminals of the corresponding UPS I O terminal block in parallel system through each battery MCB as shown in Figure 4 4 UPS 1 UPS2 Bat Bat N Bat PE Bat Bat N Bat PE ejeje UPS 1 MCB UPS 2 MCB PE Positive battery string Negative battery string Figure 4 4 Connection diagram of shared battery string in 1 1 parallel system Refer to Figure 4 5 to configure the positive battery string and negative battery string Battery cabinet first Block second Block third Block sixteen Block 12V 12V 12V 1 12V Battery string Figure 4 5 Internal connection diagram for positive battery string and negative battery string 2 Setting Power on the system set each single UPS to shared battery string configuration through the Service Software Settings gt Shared Battery from each UPS unit set the Service Software Settings gt Battery Cells Number and Single Group Batt Cap from each UPS unit and each UPS unit setting must be the same 1 For the parallel system used the shared battery strings make sure that the Service Software settings are correct Refer to 4 4 2 for details of th
88. system See Table 10 2 for cable description Refer to 4 3 2 for the methods to connect the parallel cables Table 10 2 Description of the communication cable For N 1 parallel system N 1 communication cables are needed For example two communication cables are needed Communiation D 00B46158P77 in 1 1 parallel system three communication cables are cable 2 needed in 2 1 parallel system four communication cables are needed in 3 1 parallel system 10 3 Battery Cabinet For extra long back up time an external battery cabinet is available Figure 10 1 Appearance of the battery cabinet 64 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Options 10 4 Liebert NXC Input Transformer Version This UPS includes an isolation transformer at the UPS input This transformer is installed in place of the batteries and provides electrical isolation between the load and the input mains utility UPS must be nat connected N2 free Transformer MAINS INPUT 400 50 60Hz OUTPUT 400V 50 60Hz EXT BATTERY p OR PANE Bat N Sc Bat C Figure 10 2 UPS with input isolating transformer 10 5 Liebert NXC Output Transformer Version This UPS includes an isolation transformer at the UPS output This transformer is installed in place of the batteries and provides electrical isolation between the UPS output and the load UPS n OW UL
89. t check if there are some relevant alarms such as Bypass Phase Reverse Input Disconnect Fault If so solve them first Bypass protection 2 Then verify that the bypass voltage and frequency displayed on the LCD are within the selected range Note that the rated voltage and frequency are specified by the Output Voltage Level and Output Frequency Level respectively 3 If the displayed voltage is abnormal please verify the actual bypass voltage and frequency presented to the UPS Check the external power if any fault is found If the utility is likely to trigger this alarm frequently the bypass limit can be increased through the configuration software according to the user feedback This alarm is triggered by an inverter software program when the inverter and bypass waveforms are misaligned by more than 6 degrees in phase The amplitude threshold is fixed at 10 of nominal rating This alarm will recover automatically when the alarm condition disappears Inverter asynchronous 1 First check if the alarm Bypass Unable To Trace or Bypass Protection exits If so solve it first 2 Verify the waveform of the bypass voltage If too distorted ask the user to verify it and seek any possible measurement The temperature of the inverter heat sink is too high to keep the inverter running This alarm is triggered by the signal from a temperature monitoring thermostat on the inverter bridge heat sink The alarm is
90. t indicator turns on and the buzzer beeps for 1 second 3 The rectifier runs in normal state about 30 seconds the rectifier start up is finished 4 Finish and check the parameter settings of the single UPS 5 Press the ON button for 2 seconds the inverter indicator green are blinking the inverter starts and the inverter indicator turns on 6 Measure whether the inverter output voltage is normal 7 If the battery is not connected the fault indicator is blinking If the battery is connected internal battery with MCB QS6 and QS7 the fault indicator turns off 3 5 4 Battery Mode Start Up 1 Close the battery MCB press the battery cold start button on the UPS front panel for 2 seconds the LCD displays the start screen The fault indicator red will blink and the buzzer will beep continuously after the rectifier finish the start 2 Press the ON button for 2 seconds the inverter starts and the inverter indicator green turns on User Manual 10H52188UM60 Rev 2 09 2012 33 Parallel UPS Installation And Commissioning Liebert NXC Chapter4 Parallel UPS Installation And Commissioning This chapter describes the features requirements installation and commissioning of the parallel system The UPS parallel system provides the user with N X 2 x N X x 4 parallel configuration N stands for the basic parallel sets X stands for the redundant sets 4 1 Features 1 The software and the hardware of each UPS in parallel
91. ta before conducting the UPS functional check Procedures are as follows 1 Press the OFF button to check if the buzzer beeps indicators are on and the LCD display is normal 2 Press the ALARM CLEAR button to check again if the indicators are on the LCD display is normal and the UPS has been transferred to the inverter mode User Manual 10H52188UM60 Rev 2 09 2012 59 Product Specifications Liebert NXC Chapter9 Product Specifications The chapter lists the UPS specifications 9 1 Conformity and Standards The UPS has been designed to conform to the European and international standards listed in Table 9 1 Table 9 1 European and International Standards Item Normative reference General and safety requirements for UPS EN IEC 62040 1 EMC requirements for UPS EN IEC 62040 2 category C2 Note The product standards in this table incorporate relevant compliance clauses with generic IEC and EN standards for safety IEC EN 60950 electromagnetic emission and immunity IEC EN 61000 series and construction IEC EN 60146 series and 60529 9 2 Environmental Characteristics Table 9 2 Environmental Characteristics Rated power kVA Item Unit rr 9p s E O TmWomWeWon dik 98 48 me 22000 derating according to ELA 2 when higher that 2000 m and transport temperature for je 20 to 70 EE battery storage 20 to 30 20 C for optimum battery storage temperature Overvltage eve oT
92. tem overload requirements should be taken into account in installation It is recommended to use the thermo magnetic circuit breaker which satisfies with IEC EN 60947 2 tripping curve C normal when the current value reaches 125 of the current value listed in Table 3 1 Split bypass When the system adopts split bypass separate protective devices should be installed at the mains input power distribution respectively for the mains and bypass Bypass backfeed protection When using the bypass backfeed protection function it is necessary to install a protective device with auxiliary contact function upstream of the UPS bypass input the auxiliary contact should be connected to the system opto coupled contact port refer to section 7 2 and Figure 3 2 The same neutral line must be used for the rectifier and bypass power 22 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Single UPS Installation And Commissioning LINE POWER SUPPLY BYPASS LINE POWER SUPPLY X External X X External V X Protection X Protection Protection Disconnector UPS feel _furvapa nana u2 vae 1 5 5 Dry Contact Port 5 To Loads Figure 3 2 External protective device for backfeed protection Earth leakage current The residual current detector RCD for the UPS upstream input power distribution should be Sensitive to the DC unidirectional pulse level A in power distribution network Insensitive to the transient c
93. th 19mm wrench in clockwise direction to screw the Brake Pads down to the ground to prevent the UPS moving 3 2 1 Location To extend the UPS life the place chosen must offer The UPS must be installed vertically on a level and even surface Convenient wiring Adequate operator access area Adequate ventilation to meet the heat dissipation requirement No corrosive gas such as sulfur dioxide and so on No excessive moisture or heat source No excessive dust Compliance with fire fighting requirements Operating temperature compliant with the specifications see Table 9 2 for details 3 2 2 Environmental Requirement UPS room The UPS is designed for indoor installation which should be installed in a clean and well ventilated environment so as to keep the ambient temperature within the specifications The internal fans provide the forced air cooling for the UPS Cooling air enters the UPS through the ventilation holes on the front panel and exhausts the hot air through the back ventilation holes Therefore do not obstruct the ventilation holes Maintain at least 200mm clearances between the front rear side panels of the UPS and the wall or adjacent equipment see Figure 3 1 so as not to obstruct the UPS ventilation and heat dissipation Otherwise the UPS internal temperature will rise which will shorten the UPS life 20 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Single UPS Installation An
94. the power on When the bypass of the single unit in the parallel system is not consistent a system fault may occur check and confirm the bypass before power on 4 4 2 Parallel System Parameters Setting The parallel parameters for all the UPS units in parallel system should be set Power ON the each UPS of the parallel system according to step 1 step 4 in 4 4 3 it s prohibited to start the inverter Set the parallel parameters according to Table 4 2 Table 4 2 Parallel parameters setting Display Parameters Default value Parallel parameters setting ParamSet Ing Single Group Batt Cap Group Batt Cap 0014 4 Set the parameter according to the actual battery capacity X Battery Cells Number Set the parameter according to the actual battery number Set the parameter according to the actual batter characteristic Select Enabled if th h tt lect Disabl Shared Battery Disabled elect Enabled if there is shared battery select Disabled if there is no shared battery System Configuration Parallel 2 Set the paramerter to 3 if there are four UPS to form 3 1 Parallel requisite units 1 X parallel system Set the paramerter to 1 if there are four UPS to form 3 1 Parallel Redundant Units parallel system ECO ECOMode Normal Set the parameter to the actual power grid Output frencency level 50Hz 50Hz 60Hz can
95. the terminals The REPO cable is complete Ensure that the REPO cable is firmly connected to avoid no action or wrong action of the REPO caused by accidental dropping or rough handling 3 For parallel UPS when connecting the REPO cable users should parallel connect 12V of the REPO port with one end of the electronic switch and parallel connect IN with the other end of the electronic switch Note the difference between the port silkscreen and during connection When the REPO switch at the user end closes the UPS will generate an alarm and cut off the output immediately and the UPS will not return to the normal operation state automatically At this point you must change the REPO switch state and power on the UPS manually 56 User Manual 10H52188UM60 Rev 2 09 2012 Liebert NXC Communication 1 It is recommended to use 0 82mm 0 33mm signal cable of 18AWG 33AWG copper core cable 2 If the switch you have configured is of electronic control tripping function when the REPO signal takes action you need to close the switch before restart the UPS 7 3 Connecting USB Communication Cables The USB port is located on the rear panel of the UPS as shown in Figure 1 3 The USB port can connect the monitoring software The methods to connect the communication cable are as follows Insert one end of the USB communication cable to the USB port see Figure 1 3 on the rear panel of the UPS and connect t
96. trin Shared Battery en i Disabled a r Sten Configuration e Set the parallel e ert edna Kovo Nomi x FourpueFequencyLeve x FoutputVoragetevel Sette outputvoageleel X x Set the LBS function NONE SLAVE or MASTER be LBS Function x C Command password 12345 12345 3 Phase Output or 1 Phase Output Set the output mode Three or Single UN Set Display contrast Date format set and Date amp time according to the actual requirements For Comm1 Comm2 and Comm3 baud rate 1200 2400 4800 9600 or 19200 can be selected The interface is shown in Figure 3 12 x x Xx x lt n lt x lt Xx NXC 20kVA 14 30 36 a Display contrast E Date format set Y M D D M Y M D Y Y M D Date amp Time 2010 08 13 15 12 06 Settings Figure 3 12 Settings interface 1 Set Single Group Batt Cap according to the actual total battery capacity for Battery Blocks Number 30 32 34 36 38 or 40 can be selected set Equalize Charge Allowed Temp Compensation and Batt Temp Sensor Position battery temperature sensor is optional according to the user requirement Nw The default value of Battery Cells Number is 32 set the paramerter according to the atcual requirement 32 User Manu
97. urrent pulse The residual current circuit breaker RCCB must be sensitive to the DC unidirectional pulse level A in power distribution network but insensitive to the transient current pulse as shown in Figure 3 3 respectively awl DY Figure 3 3 RCCB symbols When using the earth RCD in split bypass system or parallel system the RCD should be installed at the upstream input power distribution terminal to avoid generating false alarms The earth leakage current introduced by the RFI filter in the UPS ranges from 3 5mA to 1000mA It is recommended to confirm the sensitivity of each differential device of the upstream input power distribution and downstream power distribution to load User Manual 10H52188UM60 Rev 2 09 2012 23 Single UPS Installation And Commissioning Liebert NXC 3 3 2 Battery Input for external Battery The overcurrent protective device has been placed in the battery cabinet when you choose the battery cabinet option provided by Emerson Otherwise the external battery cabinet should provide DC compatible fused circuit breaker so as to provide the overcurrent protection for the UPS and its batteries 3 4 Connecting Power Cables I O cables and battery cables are required for connection When connecting the cables you should follow the local wiring regulations take the environmental situation into account and refer to Table 3B of IEC EN 60950 1 The max current in different operating modes is listed in Tabl
98. ust configure extenal input MCB and extenal output MCB when carring out the power distribution for the parallel system as shown in Figure 4 1 When operating the external Bypass Qout BYP refer to 6 2 6 Changing power distribution mode This product is compatible with 3 in 3 out 3 in 1 out factory default 3 in 3 out Carry out the parallel connection after changing the single system to the required system refer to Changing power distribution mode in 3 4 1 for the changing method if you need to change the mode from 3 in 3 out to 3 in 1 out or from 3 in 1 out to 3 in 3 out User Manual 10H52188UM60 Rev 2 09 2012 35 Parallel UPS Installation And Commissioning Liebert NXC 4 3 2 Connecting Parallel Cables In case of parallel system the optional cable is supplied The parallel cables form a ring connection through the parallel ports on the UPS rear panel The cable connection schematic diagram of 3 1 parallel system is shown in Figure 4 2 The first port on the left is DB9 male port needle shape and the second port on the left is DB9 female port hole shape Doel le DB9 male port 089 female port m UPS 1 wT N rnH ollo O O 1 ixi bB mC UPS 2 NERA I oN oN i UPS 3 m UPS 4 1 The Emerson parallel cables must be used for the parallel system 2 The parallel communication fault occurs when carrying
99. working on the copper bars connected to the external battery please ensure they are disconnected from all power supplies 3 Observe the following safety precautions when working on the batteries 1 The battery must be firmly and reliably connected After the connection is completed all connections between the terminals and the batteries must be calibrated The requirements for torque specified in the instructions or user manual provided by the battery manufacturer must be satisfied All connections between the terminals and the batteries must be inspected and tightened at least once a year Failure to observe this may result in fire 2 Inspect the battery appearance before accepting and using the battery If there is any damage to the packaging dirty battery terminals terminal erosion rust or cracks in the enclosures deformation or electrolyte leakage replace it with a new product Failure to do so may result in battery capacity reduction electrolyte leakage or fire 3 Batteries are very heavy Please use the proper method when moving and lifting batteries to prevent any injuries or damage to the battery terminals Severely damaged batteries may catch fire 4 The battery terminals must not be subject to any force such as the pulling force or twisting force exerted by cables This may damage the internal connection of the battery and severe damage may result in fires 5 The battery must be installed and stored in a clean cool and dry envir

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Liebert® NXCfrom 10 to 20kVA User Manual