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Liebert NXC 30kVA And 40kVA UPS User Manual

1. ON RENO NOTS i communication port INTE E a RS232 Intellislot port communication port zo iS T Ss 6 User dry contact port I UY IL TL E a oe ERE d rra s Se EST a p i o o 250008 2 2000 E J EOL Oo ET r i i ee e gt ji 10 I Cel Figure 3 5 Illustration drawing of communication box ports 3 2 2 Input Dry Contact Port The input dry contact ports J1 and J2 are shown in Figure 3 6 and described in Table 3 5 The input dry contact voltage is 12Vdc and the current is 20mA Q Z 0 UPS inside External ports J1 J2 4 3 2 1 4 3 2 1 Figure 3 6 Input dry contact ports J1 and J2 Table 3 5 Description of input dry contact ports J1 and J2 Silkscreen Port Pin No Pin name Meanings Generator 11 GEN Generator is connected Shorted to 1 2 is normal mode Ji mode input and opened to 1 2 is generator mode 1 2 GND 1 1 and 1 2 have been shorted in factory External External maintenance bypas switch state The auxiliary maintenanc
2. 5 W46 BATN BOX W57 BAT BUS w55 _ te BAT BUS H El jal Layer 2 Layer 3 Layer 4 Layer 5 E Ej ws7 Battery tray 3 a h g H El Front view 32 block battery RE K AQA OO ae BR o 111 ss jbl W37 ot BAT BUS was F BAT BUS T Layer 1 5 a0 Li Layer 2 31 W36 ey w46 N a Layer 3 Black Black T 3 5 LE pema ey Ly O O OO aa Layer 4 W45 Battery tray 3 Layer 5 BAT k r W37 i OS de Front view 38 block battery Back view E BS Figure 8 5 Connection between battery trays and batteries T Back view W36 BAT N BUS 5 According to Figure 8 5 connect the positive terminal of battery tray 1 to cabinet positive terminal connect the neutral line terminal of battery tray 3 to cabinet neutral line terminal and connect the negative terminal of battery tray 5 to cabinet negative terminal Liebert NXC 30kVA And 40kVA UPS User Manual T 0 Chapter 8 Options AA At this moment the battery voltage over 384V has been input to the UPS cabinet Insulated gloves and other protective measures are required
3. W39 CROSS1 5 m W39 CROSS1 ide o qu E E E W39 CROSS1 W39 CROSS1 w39 CROSS1_ i B A a W39 CROSS1 W39 CROSS1 9 a El E w39 CROSS W39 CROSS1 E ocios l B tt t 2 E 3 W43 DOWN s 3 attery tray T El las El y LES E Ta W44 BAT BOX W50 1DOWN PP75 terminal of W50 connects W42 UP to PP75 terminal of W42 Battery tray 1 PP75 terminal of W43 connects to PP7S terminal of W42 PP75 terminal of W43 connects to PP75 terminal of W42 W39 CROSS1 W39 CROSS1 W39 CROSS1 ee E a E a E W39 CROSS1 sl L was cross1 oo I was cross 60 E E 5 E 5 g W39 CROSS1 39 CROSS1 W39 CROSS1 T W39 CROSS1 ml W39 CROSS1 pL aw ag E E 0 g E lW39 CROSS1 sb W39 CROSS1 W39 CROSS1 W39 CROSS1 5 E w39 cross A EI w39 CROSS 5 wss cross A 0 pl a W39 CROSS1 a W39 CROSS1 g a W39 CROSS1 gt SI 5 El a E g W46 BATN BOX
4. i i 4 F z Air filter i a See Do E aD Figure 10 1 Replacing air filter 10 2 3 Replacement Of Fuse 10 3 When replacing the fuses on copper bars of the battery input terminals use fuses of the same model as the original ones Note that the AC fuses and DC fuses in the system are not interchangeable Maintenance Of UPS And Options UPS and the options need common maintenance 1 Keep good history record Keeping good history record facilitates failure treatment 2 Keep clean so as to prevent UPS from the invasion of dust and moisture 3 Maintain appropriate ambient temperature The most appropriate temperature for battery is 20 C to 25 C Too low temperature will reduce the battery capacity and too high temperature will reduce the battery life 4 Check the wiring Check the tightening of all connected screws and there should be routine tightening at least once a year 5 Check regularly if there is any abnormity in the superior or subordinate switch to ensure cutting off the import or export when the current is too large Maintenance staff should be familiar with the typical ambient conditions where UPS is working in order to rapidly position which ambient conditions are unusual the setting of UPS operation control panel should
5. Hem Unit Rated power kVA 30kVA 40kVA Rated AC voltage Vac 380 400 415 3 phase 4 wire sharing neutral with the rectifier input and providing neutral reference to the output 380V A 46 60 fea 400V A 43 58 415V A 41 56 Based on nominal voltage and rated load current under apparent power lt 105 continues Overload 105 125 of rated load 5min 125 150 of rated load 1min 150 400 of rated load 1s gt 400 200ms Frequency Hz 50 60 Bypass voltage tolerance Savas Upper limit 10 15 or 20 default 15 Lower limit 10 20 30 or 40 default 20 Bypass frequen y 10 or 20 default 20 tolerance Synchronisation window Hz Rated frequency 0 5 1 2 3 optional Note 1 Factory set to 380V 400V or 415V selectable by service engineer 2 Factory set to 50Hz 60Hz selectable by service engineer Efficiency And Loss Table 11 8 Efficiency and loss Item Unit Rated power kVA Liebert NXC 30kVA And 40kVA UPS User Manual 84 Chapter 11 Specifications 30kVA 40kVA Efficiency 100 load 94 7 94 4 75 load 94 8 94 7 eee ee 67 load 94 8 94 7 50 load 94 6 94 8 33 load 93 5 94 3 25 load 91 7 93 6 ECO mode 98 4 98 4 Loss Normal mode no load kW 1 116 1 116 Normal mode full load kW 1 620 2 240 Note 400Vac input and outp
6. W59 BPLI bC W58 BPLI bB W57 BPLI bA E G a ice ES H 1 2 1 2 1 2 alla 5 W62 BPLO bC W61 BPLO bB W60 BPLO bA Top view Step 1 Lead W62 cable through the cabling hole of the upper battery tray A amplified view Step 2 Connect W62 cable to the transfer terminal bC then use M6 screw to fasten it Side view Step 4 Insert W59 cable terminal into Do the cabling hole bC at bottom of switch Step 3 Lead W59 cable through the cabling E Q2 then use cross head screwdriver to hole of the cabinet front distribution area B amplified view fasten screw on switch Q2 Figure 8 3 Connection of inductor 1 2 Respectively connect one end of W61 and W58 to terminal1 and terminal 2 of inductor 2 and use the M6 x 16 sems screws M6 flat washers and nuts to fasten the terminals The torque value is 4 8N m Then respectively connect the other end of W61 and W58 to the transfer terminal bB in UPS cabinet and the corresponding cabling hole Q2 4 of bypass input switch Q2 Refer to inductor 1 for the detailed connection method of inductor 2 3 Respectively connect one end of W60 and W57 to terminal1 and terminal 2 of inductor 3 and use the M6 x 16 sems screws M6 flat washers and nuts to fasten the terminals The torque value is 4 8N m Then respectively connect the other end of W60 and W57 to the transfer terminal bA in UPS cabinet and the corresponding cabling hole Q2 2 of bypass input switch Q2 Refer to induc
7. E 5 Parallel Parallel Qs cable cable To load Figure 7 5 LBS system parallel system A In a dual bus system the two UPS systems must have the same power rating voltage and frequency and the load must not exceed the power rating of a UPS module system 7 4 2 External Protective Device Refer to 3 7 9 External Protective Device 7 4 3 Power Cable The power cable of dual bus power system is similar to that of single system Refer to 3 1 Wiring Of Power Cable 7 4 4 LBS Cable The shielded and double insulated parallel cables are available in lengths 5m 10m and 15m Connect the two optional LBS cables in a ring configuration from the LBS1 port of one UPS module to LBS2 port of another UPS module and from the LBS2 port of one UPS module to LBS1 port of another UPS module as shown in Figure 7 6 and Figure 7 7 LBS cable Figure 7 6 Connection of typical LBS system UPS module Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 7 Parallel System And LBS System 63 Parallel cable Parallel cable LBS cable Figure 7 7 Connection of typical LBS system parallel system Liebert NXC 30kVA And 40kVA UPS User Manual 64 Chapter 8 Options Chapter 8 Options This chapter provides the UPS option list and introduces the functions installation and configuration
8. LET ICO 1 W63 DOWN W62 UP W39 CROSS1 Le W39 CROSS1 lw39 CROSS ws9CROSssi_ 41 ES T E W39 CROSS1 E 5 w3o cross I EA W39 CROSS1 W63 DOWN Battery tray 2 PECHO El W64 BAT BOX PP75 terminal of W63 connects to PP75 terminal of W62 Chapter 6 Battery PP75 terminal of W63 connects to PP75 terminal of W62 W39 CROSS1 W39 CROSS1 a W39 CROSSI w39 CROssi_ 1 E ao W39 CROSS1 El Iwas CROSS Al W39 CROSS1 H qu LET bee es lal W63 DOWN W62 UP Battery tray 3 W66 BATN BOX Liebert NXC 30kVA And 40kVA UPS User Manual Battery tray 4 32 block battery W39 CROSS1 e W39 CROSS1 w39 CROSS ws9crosst_ ES T P W39 CROSS1 E lws cross k 0 1 W39 CROSS1 ley OEA w65 BAT Box W62 UP Battery tray 5 49 50 Chapter 6 _ Battery W38 CROSS4
9. a o l ee dl 8 Sy Sa E ES S gt os GQ 4 Ss 2 22 at MIE o IC IL IL Ji IL I I IC ja J E E OS cs 2 sl Se PE EE cs cs e e BURTI Peje 5 Bars d kleene ea ae Step 2 Lead cables out from U type hole at the bottom of power distribution frame and connect them to corresponding terminals ko Figure 3 3 Power cables wiring route top cable access Liebert NXC 30kVA And 40kVA UPS User Manual 20 Chapter 3 Electrical Installation e a ESp22t 2 5 SSS Remove this cover board lead cables into the cabinet and connect as T gt 6 them to corresponding t
10. A 1 After the UPS shutdown the load is transferred to maintenance bypass If required operate the maintenance bypass switch at any time 2 Only qualified personnel shall finish the UPS installation This procedure can be executed after the system runs normally A J ris hazardous battery voltage The battery terminals still have hazardous voltage after the UPS is completely shut down 5 6 2 Procedures For Completely Powering Down UPS While Maintaining Power To Load The following procedures are applicable for completely powering down the UPS and still keeping the power supply to the load Refer to the procedures in 5 3 4 Transfer From Normal Mode To Maintenance Mode Liebert NXC 30kVA And 40kVA UPS User Manual 42 Chapter 5 UPS Operation Introduction 5 7 EPO Procedures The EPO is designed to switch off the UPS in emergency conditions that is fire flood etc To carry out EPO you just need to press the EPO button then the system will turn off the rectifier inverter and stop powering the load immediately including the inverter and bypass and the battery stops charging or discharging After EPO if the input mains is present the UPS s control circuit will remain active however the output will be turned off To remove all power from the UPS first disconnect the external power switch of the UPS and then pull the battery terminals see Figure 5 3 for details 5 8 UPS Reset Procedures After
11. Communic BCB box port ation box Meaning Signal state port J4 DRV DRV Tripping control signal of BCB Normal high level BCB closed from the UPS Abnormal low level BCB open Auxiliary contact of BCB Normal OV BCB closed INGA FEAN contact off means BCB off Abnormal open BCB open GND1 GND Signal ground GND1 to GND Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 6 Battery 53 Note The cable of the X102 BCB port must be routed separately from the power cable lt uses the dual insulated shielded cable the CSA is generally 0 5mm 1mm when the wiring distance is 25m 50m length and the two ends of the shielding coat must be connected to the enclosure reliably The separate safety earth must be connected A Caution If the corresponding functions are not required just do not connect corresponding ternimals between the UPS and BCB box 6 10 BCB Reference Current And Connection Table 6 6 provides recommended BCB rated current and battery maximum discharge current at full load Refer to Table 3B in IEC60950 1 and select the appropriate cable CSA according to local electrical regulations Table 6 6 BCB rated current and battery max discharge current at full load recommended UPS rating kVA I en unit 3OKVA AOKVA 32 block Maximum battery discharge A 95 127 Datter current at full load y Reference rated current of BCB A 160 Maxi
12. Alarm Explanation Output disabled EOD event happened Check the battery voltage System Bypass STS fail The adjacentbypass STS open circuit fault or shoet circuit fault Mains volt abnormal The mains voltage is outside specifications and results in rectifier shutdown Mains undervoltage At least one phase main input voltage is within 132V 176V thus the load should be derated Mains freq abnormal The mains frequency is outside specifications and results in rectifier shutdown Mains phase reversed The AC input phase rotation is reversed Input feedback Battery voltage fed back to rectifier input Mains neutral lost AC rectifier input neutral line not detected Input current abnormal Battery load sharing imbalance or rectifier input current abnormal Input curr over limit Input current over limit Bypass unable to trace The bypass frequency is outside specifications This alarm automatically resets once the bypass voltage goes normal Bypass abnormal Bypass STS fail Byp abnormal shutdown Bypass phase reversed Bypass overcurrent Rectifier fault Rectifier overtem DC bus over voltage The amplitude or frequency of the bypass voltage exceeds the limit This alarm automatically resets once the bypass voltage returns to normal At least one of the STSs at the bypass side is open or shorted This fault is locked until power off Both the bypass and inverter v
13. EPO is triggered when pins 3 and 4 of J3 are shorted or pins 2 and 1 of J3 are opened If an external EPO facility is required pins 1 and 2 or 3 and 4 of J3 are reserved for this function The external EPO facility is also connected to the normally open or normally closed remote EPO switch between these two terminals using shielded cable If this function is not used pins 3 and 4 of J23 must be opened and pins 1 and 2 of J3 must be shorted A The UPS EPO action shuts down the rectifier inverter and static bypass but it does not internally disconnect the mains input power To disconnect all power to the UPS open the external power switch bypass input switch output switch and BCB after EPO is activated RS232 Communication Port See Figure 3 5 for the position of RS232 port RS232 port monitors and sets parameters through connecting with computer The RS232 port provides serial data and is intended for use by authorized commissioning and service personnel in UPS commissioning and service USB Communication Port See Figure 3 5 for the position of USB port This port does not open to the customers just for UPS engineer commission and update the corresponding software parameters Method Connect one end of the USB communication cable to the USB port in the communication box and the other end to the USB port of the computer The USB port provides serial data and is intended for use by authorized commissioning and ser
14. mC mB mA N bA bB oN e oA a oB oC bC Shorting copper bar of common input configuration Note 1 N battery input terminals 2 PE PE input terminal 3 mA mB mC rectifier input terminals 4 bA bB bC N bypass input terminals 5 oA 0B oC ON output terminals Figure 3 2 Power cable connection terminals Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 3 Electrical Installation Step 1 Remove this left top cover lead cables into cabinet and route cables along left side panel to cabinet base Left top cover
15. 100 stable output 2 Battery in fully charged state battery float charge at least 5h and generator not connected 3 Current system is in float charge state Self test exit conditions 1 Confirm that the system is not in self test state at least 10 seconds and satisfies the following conditions in battery mode or rectifier is closed and then the system will shift to battery supply state 2 During the self test the system will shift to float charge state if the load fluctuation UPS module overload or no battery occurs 3 During the self test if the battery voltage is lower than the calculated pre alarm voltage or the battery discharge exceeds the protection time then the system will shift to float charge state 4 The user can manually stop the maintenance test via the LCD Note After the self test is successful the system will fully clear the self test interval counter If the self test fails this time then exits the system when self test conditions are satisfied again enters self test once more Procedures for manual maintenance self test 1 Select the Command menu on the LCD screen Use the F3 left key or F4 right key to display the Command menu Press the F5 enter key to confirm it 2 Select the desired test Use the F3 up key or F4 down key to highlight the desired test item Press the F5 enter key to confirm it After the prompt use the F3 up and F4 right keys to input the password and then press
16. 6 Close the battery compartment door install the removed fixing screws then close the UPS front door Refer to Chapter 6 Battery for more information of the battery 8 2 3 Battery Temperature Compensation Kit A battery temperature sensor is used to measure the battery temperature The battery temperature is installed next to the battery for measuring battery temperature The sensor signal output cable is connected to the UF RS485 card of Intellislot 1 port At this moment the temperature sensor is connected with the UPS internal logic circuit With this feature fitted the nominal float voltage supplied to the battery is adjusted so as to be inversely proportional to the ambient temperature of the battery cabinet or battery room This prevents the battery being over charged at high ambient temperatures Preparation 1 Prepare the installation tools including a cross head screwdriver 2 Check that all installation materials are present and complete including a battery temperature sensor a UF RS485 card Procedures AAs 1 Connect the cables strictly following the instructions Failure to observe this may cause damage to the UPS and the battery 2 Shut down the UPS when installing the battery temperature sensor During installation do not touch the battery terminals bared copper bars and components 1 Shut down the UPS completely 1 Close the load 2 Refer to 5 6 1 Procedures For Completely Powering Down UPS fo
17. Loin power supply interruption danger of the load 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 key of each UPS in turn for two seconds The inverter indicators are off and the buzzer alarms The load transfers to the static bypass and the inverter shuts down At last all UPSs are transferred to load supply mode A Press the 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 UPS external total maintenance bypass switches and do not close the internal maintenance bypass switch Q3 of each UPS 3 At this moment the external total maintenance bypass should be parallel connected with each UPS s static switch 4 At this moment the LCD of each UPS displays Maint sw closed 5 Disconnect the output switch Q5 and neutral line switch Q6 of each UPS in turn and the maintenance bypass can supply power to the load ZN cion Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 7 Parallel System And LBS System 59 When the UPS is in maintenance mode the load does not have the mains abnormal protection 6 Pressing the EPO button of each UPS stops the operation of rectifier inverter static switch and battery but this
18. el Tee Ee S alo o o 1 1 IL IL IL IL IL IL IL Bypass input switch Q2 mi oe e o en o 93 L IL IL IL IL IL IL IL IL IL E IL IL IL IL IL IL IL IL IL fol i 11 IL IL IL IL IL IL IL IL e D a e a LASi 7 CIO Rectifier input switch Q1 Y AO Sydohde e pe isl eS al fol els o al lo le e o e fal es el 2 Bie o 18 lal el He Figure 5 1 UPS power switch UPS Startup Procedures The UPS must be completely installed and tested by authorized engineer and external power supply switch is closed then you can start the UPS Startup Procedures In Normal Mode AAs 1 These procedures result in mains voltage being applied to the UPS output terminals 2 If any load equipment is connected to the UPS output terminals check with the user that it is safe to apply power If the load is not ready to receive power please disconnect the downstream load switch and stick a warning label on the connection point of the load Use the following procedures to turn on the UPS from a fully powered down condition 1 Open the front door of the UPS ensure that the internal maintenance bypass switch Q3 is disconnected and switch Q6 is closed while the input cables and copper bars are reliably connected AAs All operations relating to disconnect or close the switch of maintenance bypass switch shall be finished within three seconds in case of
19. including Q1 Rectifier input switch which connects UPS to the main circuit power Q2 Bypass input switch which connects UPS to the bypass Q3 Maintenance bypass switch locked which supplies power to the load when UPS is being maintained Note If the UPS system is composed of more than 2 paralleled UPS modules do not use the internal maintenance bypass switch Q5 Output switch which connects UPS output to the load Q6 Neutral line switch locked Liebert NXC 30kVA And 40kVA UPS User Manual 36 5 2 5 2 1 Chapter 5 UPS Operation Introduction 00 E o lo ao E po 2 222 L IL 11 IL IL IL IL IL IL IL Ple le p q SSSSSSSSaSee Ea es O O O O O ae Ouput switch Q5 2 o oj Neutral line switch Q6 SSSSSSSSsaa Le 2222592922 it IL IL IL IL IL JL JL JL JL bi L IL IL IL IL IL IL IL IL IL pe L IL IL IL IL IL IL IL IL IL o 9 El o it IL IL IL IL IL IL IL IL IL ole e Maintenance bypass switch Q3 on o lt
20. is not met 4 5 Alarm List Table 4 9 provides the complete list of UPS alarm messages for display either on the Event menu or on the Records menu described in Table 4 7 Table 4 9 UPS alarm list Alarm Explanation Fault reset FAULT CLEAR key on the operator control and display panel pressed Rectifier in setting The rectifier starts up and is in synchronization Inverter in setting The inverter starts up and is in synchronization Manual turn on ON key on the operator control and display panel pressed to turn on the inverter Manual turn off OFF key on the operator control and display panel pressed to turn off the inverter Turn on fail The inverter failed to turn on when the ON key is pressed This may be the result of an invalid operation maintenance bypass switch closed or DC bus or rectifier not ready Soft start fail Owing to low DC bus voltage the rectifier will report this alarm Alarm silence ALARM CLEAR key on the operator control and display panel pressed Audible alarm reset ALARM CLEAR key on the operator control and display panel pressed in alarm silence state Bypass mode The UPS is in bypass mode Normal mode The UPS is in normal mode Battery mode The UPS is in battery mode UPS shutdown UPS shutdown with no output power Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 4 Operator Control And Display Panel 33
21. 5 Environmental REQUIrSMnerit s ccil ac seeds td delia r tit 11 25 41 UPS Location Selection curan 11 2 5 2 Battery Location Selection isi aaa a 12 20 93 SOU miis ra lola Mee ede eee es 12 2 6 Mech nical Requirements ne tyt an ii eee 12 2 6 1 Moving Cabilet ennn mpe ana a oae a e a a ie a a ae 12 216 2 Clearance mi AN 12 2 6 3 Gable Access Mode iii a AA ee ee 13 2 6 4 Final Positioning ANA EII iia A AA A AA 13 2 7 Installation DraWwi g Saeni A ee aE aia 13 Chapter 3 Electrical Installation is a ns atid ion Ae dee aed a erie eee 15 3 1 Wiring Of Power Cable uta iaa 15 SledsSystem Configuration TE 15 3 1 2 Maximum Steady State AC And DC Currents ccooccccncccnoccconncnoncnnoncnnnnnnnnnncnnnnnnnn nc nn cn nn nn nn nan n cn nn cc nnnnnnnnrs 15 3 4 3 GSA OFUPS Gable se ita tal rta 16 3 1 4 Selection OFUPSI O Within tdi di 16 3 1 5 Distance Between The UPS Connection Point And The Floor ooococinccccococicoccnocccononanancconana nac c nan ca rancia 16 IL NOLES ii o tata fas Me Sects ay ania th dau tees e desl Va US 16 3 1 7 Power Cable Connecting Terminal ccceeseeseseeeeeeeeeneeeeeeseeeeeaeeseaeeeeaeeseaeeeeaeeseaeeseaeeseeeseaeeeeieeeeneeeeaes 16 3218 PrOtSCtiOn O aaa 16 3 1 9 External Protective Device oooomcccinnnncccnnnccnnsnocnnmnncn nr 17 3 1 10 Power Cable Connection StepS ooconnccononcconcconoccnnncnononcnnnanononcnnnn con nc non nano nn nen cnn n cnn n rara n eran cn rare nanncnnnnes 17 3 2W
22. B Procedures 1 Shut down the UPS completely 1 Close the load 2 Refer to 5 6 1 Procedures For Completely Powering Down UPS for UPS module shutdown and 7 3 5 Procedures For Completely Powering Down UPS for parallel system shutdown 3 All the LCDS are off wait five minutes for the internal DC bus capacitors of the UPS complete discharging 2 Open the cabinet front door remove the screws to open the battery compartment door see Figure 8 4 and reserve the removed screws Battery compartment door Figure 8 4 Opening battery compartment door Liebert NXC 30kVA And 40kVA UPS User Manual 68 Chapter 8 Options AAs The following operations of battery and battery tray shall be operated by authorized service engineer with insulated gloves worn 3 Place the battery into corresponding position in battery tray one by one according to internal battery connection shown in Figure 6 1 and then use the spanner and sleeve to connect the battery cables After all the batteries are placed into the battery trays lead the connection terminals between battery trays 4 According to Figure 8 5 insert the trays with batteries installed into the battery compartment one by one and ensure the No 1 No 5 battery trays correspond to No 1 No 5 layers from top to bottom of the battery compartment otherwise the battery voltage may be abnormal AAs The battery tray shall be installed fr
23. Charger fault Battery charger has failure Dischg curr limit Discharge current is over limit close the discharger Auto start After UPS shutdown at EOD the inverter automatically starts upon mains restoration Freshening boost charge The battery is forced to be in boost charge state Rec flash update Rectifier software being updated Inv flash update Inverter software being updated Liebert NXC 30kVA And 40kVA UPS User Manual 34 Chapter 4 Operator Control And Display Panel Alarm Explanation Monitor flash update Monitoring software being updated FLASH operate fail Historical record not saved Remote turn ON Turn on the inverter through the service command Remote turn ON failed Caused by invalid operation maintenance bypass switch closed DC bus or rectifier not ready Remote turn OFF Turn off the inverter through the service command Load sharing abnormal Each UPS module is parallel system cannot execute load sharing Communication fail Interruption in communication between internal monitoring board and inverter rectifier Parallel comm fail No battery Batt converter fault Communication between the UPS modules of a parallel system failed Check if any UPS modules in the parallel system are not on if yes power on these UPSs and then check if the alarm disappears Check the battery and battery connection Bus voltage abnormal Battery re
24. EOD voltage is settable from 1 6V cell to 1 9V cell VRLA 7 Battery low pre warning time The battery low pre warning time is adjustable between 3min and 60min The default setting is 5min 8 Maximum battery discharge time Liebert NXC 30kVA And 40kVA UPS User Manual 1 5 2 1 5 3 1 6 Chapter 1 Overview When the battery has small current discharge for a long time the battery is over discharged and even has unrecoverable damage thus setting a battery discharge time to protect the battery is essential The limit of time setting shall be configured by service engineer through the Emerson setting software 9 Maximum boost charge protection time To protect against the battery overcharge damage caused by long time boost charge a protect time setting is essential The limit of time setting shall be configured by service engineer through the Emerson setting software Advanced Function The UPS provides battery maintenance test function At periodic intervals 20 of the rated capacity of the battery will be discharged automatically and the actual three phase load must exceed 20 of the nominal UPS capacity If the load is less than 20 the automatic discharge cannot be executed The periodic interval can be set from 30 to 360 days The battery maintenance test function can be disabled through the Emerson setting software Conditions Battery at float charge for at least 5h load equal to 20 100 of rated UPS capacity Trigger Aut
25. Manual Describes The Following Equipment Product Model Liebert NXC 30kVA NXC 0030kTJ1AFNO2000 Liebert NXC 40kVA NXC 0040kTJ1AFNO2000 Contents Chapter T Overview iunii nuien n e E o i a es 1 tI FOalureS nia al a 1 1 2 Design Conceptual o 1 1 2 1 System DesidN ciutat iaa pais 1 e ID PS a ee cee es 2 1 2 3 System GontrolPrinciple curia iaa aa 2 1 2 4 UPS Power Supply Switch Configuration oooncccnncnnccnonccnnnccnnncnnonnncnncn cnn cn ran cnr acc rnr rca 3 1 2 5 Battery Circuit Breaker BCB eccceesceeseeeseeeeseeeeeeeeeaeecaeeesaeeseaeeesaeeseaeeesaeesaaesesaeesaaesesaeeseaeeeaeeseaeeeaees 4 13 Parallel SM AAA AAA AAA Ea 4 1 3 1 Parallel System Features cion e e ied ete a 4 1 3 2 Parallel System Requirements cecceessceseeeeeseeeceeeeeseeeceaeeesaeesaeeesaeessaeeesaeessaeeesaeeseaesesaeesaeeeaeeseaeeeaees 4 1 4 Operation Modes tr a A te Sede t 5 1 5 Battery Manage Miri A A A ee 7 AN O EE 7 1 5 2 Advanced A O a Eio A d a Aaa Ae pode EE AAEE EEEa FE LARS 8 1 5 3 Battery Temperature COMpensatiON ooocccnccnnnccconcnconccnoncnnnnnnnnncn nan nn ronca ran nnr narran 8 AS A shevibeeastehtgaadbesdasaaceeanesievsnasiieseuaaseeants 8 Chapter2 Mechanical Installation ci 9 21 Preca iiO Srta ds a tdi dao al salle ede 9 22 Transportation ap a it is ii do di des 9 2 3UNPack Iguana dd docs dd dida tdo Dicta E hate oil eye rece 9 2 4 Initial MSPS COM cocino ii a eo illa des toe es 11 2
26. Q3 when the UPS is in single module mode 3 At the moment the maintenance bypass parallels with the UPS static bypass 4 The LCD displays Maint sw closed 5 Disconnect the output switch Q5 and neutral line switch Q6 At the moment the load is powered by the maintenance bypass directly Caution When the UPS is in maintenance mode the load is not protected against abnormal mains supply 6 Pressing the EPO button stops the operation of rectifier inverter static switch and battery but this action will not affect the maintenance bypass power the load normally Note In maintenance mode the load is directly fed by the mains power instead of the pure AC power from the inverter Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 5 UPS Operation Introduction 39 7 If the UPS has internal battery use the special tool to open the battery compartment door then disconnect the three terminals BAT BAT and BAT N see Figure 5 3 for details If the UPS has external battery disconnect the corresponding switch of the external battery Figure 5 3 Disconnecting terminals of the internal battery 8 Disconnect the rectifier input switch Q1 and bypass input switch Q2 At the moment all the internal power supply is closed and the LCD does not display any more AAs 1 If the maintenance is required wait 10 minutes for the internal DC bus capacitance discharging 2 The parts of UPS
27. Screen After the UPS starts and finishes self test the primary screen appears as shown in Figure 4 3 The primary screen is divided into four windows system information window data window menu window and keypad window NXC 30kVA 16 21 17 ETE System information window L N voltage V A AB O 01 07 9 L N current V 220 220 220 Frequency HZ 20 5 20 5 20 5 50 1 50 1 50 1 Data window L L voltage V 380 380 380 Power factor V 0 99 0 99 0 99 OutPut Menu window Keypad window Figure 4 3 Primary screen The functions of the menu keys F1 F5 for the current screen are shown by self explanatory icons in the keypad window as appropriate From any menu on the primary screen pressing the F1 key returns to the OutPut menu 4 2 3 Default Screen During UPS operation if there is no alarm or key action within two minutes the default screen will appear as shown in Figure 4 4 After a short delay the LCD backlight will turn off Pressing any menu keys F1 F5 restores the default screen Liebert NXC 30kVA And 40kVA UPS User Manual 30 Chapter 4 Operator Control And Display Panel 4 3 NXC 30kVA 16 21 17 4 u EMERSON Network Power Liebert F2 F3 F4 HELP Figure 4 4 Default screen Detailed Description Of Menu Items The description that follows refers to the LCD primary screen shown in Figure 4 3 System information window The system information window displays the current time UP
28. T 40 0 le Ap ll POR Tal le Sy Tal W43 DOWN W42 UP W43 DOWN W42 UP W45 BAT BOX W42 UP Battery tray 3 Battery tray 4 Battery tray 5 38 block battery Figure 6 1 Connection for internal batteries 6 8 Design Of Battery Room No matter which type of installation system is adopted the following items shall be paid special attention to refer to Figure 6 2 OLayout of cells No matter which battery installation system is used the battery shall be located in a matter that it will not contact two naked live parts with the potential difference over 150V at the same time If it is unavoidable insulated terminal shield and insulated cable shall be used for the connection Workbench The workbench or pedal must be skid proof and insulated and at least 1m wide 8 Wiring All the wiring distances shall be minimized BCB The BCB is generally installed in the wall mounted box near the battery Liebert NXC 30kVA And 40kVA UPS User Manual 6 9 Chapter 6 Battery 51 Figure 6 2 Battery room design BCB Box Optional The BCB box contains a BCB and a BCB control board Emerson provides the BCB box and BCB signal cables length 30m for use when the battery does nat install in the battery cabinet In this situation The BCB box is fitted as close as possible to the battery and connected to the UPS Refer to Figure 6 3 and Table 6 4 for description of the BCB box and its components The BCB box protects the battery against
29. Transfer From Normal Mode To Maintenance Mode oooocccnoccccnonoccnononcncnononcnnnnnnnonnnonnnnnnnnn cnn nana nnnnnennnennnos 38 5 3 5 Transfer From Maintenance Mode To Normal Mode ooccconoccccnonoccnononcnonononcnnnannnonnnonn nc nana cnn nano nnnnnnnnnnnnnos 39 5 4 Battery Self test Procedures ui A ev dae 40 5 5 UPS Self test Procedures 2 scene al a ee a es 41 0 UPS Shutdown PTOCedUreS a A ii 41 5 6 1 Procedures For Completely Powering Down UPS ccecceeeeceeeeeeeeeeeeeeeeseaeeeeaeeeeaeeseaeeseeeseeeseeeeeneeeeaes 41 5 6 2 Procedures For Completely Powering Down UPS While Maintaining Power To Load oocconocccccinoccccnn 41 5 VEPRO Procedures coi Me eid A A AN AA Ai ee 42 5 8 UPS Reset Procedures After EPO aecaieaii cin eici in ee Eea ei oen rI AEE Eas aS ae ae abs 42 S9Aut matic Ost diia A A AA a ee da 42 ISE A le oo EUS elt ee a ee eee ee 43 5 1 1 Ghanging Current Date Arnd Time esaia ee dai 43 5t2Control ae ENOO ATENTE ATEETAN 43 Chapter 6 Batterye iunn a aa o o ad 44 61 Introduction era lol io e E NA esa 44 6d ida ie ans 44 GSU PS Battery sits sic sac tt dd id ani a a e a ET 45 6 4 Preca tions For Installation DesidM iriadin ato tes eee eee deci da cease 46 6 5 Battery Installation Environment And Number Of Batteries oooooncccnnnccnnnccnoncccnncccnnncnnnccnnnca nac n nan cc nan cc nan cannnccnnnr 46 6 9 1 Installation ENVIO MENE vicios tics ie dia rl pde aa aid 46 6 5 2 Number Of Batteries cui
30. action will not affect the maintenance bypass power the load normally A In maintenance mode the load is directly fed by the mains power instead of the pure AC power from the inverter 7 If the UPS has internal battery use the special tool to open the battery compartment door then pull the three terminals BAT BAT and BAT N see Figure 5 3 for details If the UPS has external battery disconnect the corresponding switch of the external battery All UPS modules should be disconnected from the batteries 8 Disconnect the rectifier input switch Q1 and bypass input switch Q2 of each UPS in turn At the moment all the internal power supply is closed and the LCD does not display any more AAs 1 If the maintenance is required wait 10 minutes for the internal DC bus capacitance discharging 2 The parts of UPS circuits also have hazardous voltage though the rectifier input switch bypass input switch and battery switch are disconnected Therefore the UPS maintenance is suitable for qualified personnel only 7 3 3 Procedures For Isolating One UPS Module From Parallel System A Important These procedures shall only be carried out by service personnel of Emerson or under their guidance AAs Before operation confirm that the system capacity has redundancy to avoid system shutdown due to overload The following procedures apply when one UPS module must be isolated from the paral
31. adjust the corresponding parameters through the operator control and display panel Liebert NXC 30kVA And 40kVA UPS User Manual 1 5 1 5 1 Chapter 1 Overview 7 The operation method of ECO mode is the same as the description in Chapter 5 UPS Operation Introduction However in normal mode the load is powered by the bypass the inverter indicator is off and the LCD displays Bypass mode and the transfer interval time is less than 20ms AAs In ECO mode the load is not protected against mains distortion Parallel redundancy mode system expansion For higher capacity or higher reliability or both the outputs of multiple UPS modules can be programmed for directly paralleling while a built in parallel controller in each UPS module ensures automatic load sharing The parallel system can be composed of up to four UPS modules For the operation principle diagram of the parallel redundancy mode see Figure 7 1 LBS mode A dual bus system consists of two independent UPS systems each containing one or more parallel UPS modules The dual bus system has high reliability and is suitable for load with multiple inputs For single input load an STS can be installed to power the load For the operation principle diagram of the LBS mode see Figure 7 4 and Figure 7 5 Common battery string mode It means that when the UPS modules up to four UPSs are parallel connected each UPS module can use the same battery string to ac
32. at this time its output power will increase gradually and supply the load and charge the battery again Therefore the power supply to the load will not be interrupted Battery disconnection To disconnect the external battery from the UPS system for maintenance use the external isolating switch At this time except for the battery backup function upon mains failure other functions and all the steady state performance of the UPS will not be affected UPS module failure In case of inverter failure inverter switch failure output fuse blowout and bypass STS failure the load will automatically transfer to the bypass and the output power supply will not be interrupted In this situation please contact the local customer service center of Emerson Network Power Co Ltd for technical support Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 1 Overview 3 Parallel System In the event of a fault in a UPS module it will automatically exit from the parallel system If the system is still capable of providing the required load the remaining modules will continue to supply the load with no interruption If the remaining modules are no longer capable of fulfilling power requirements the load will automatically transfer to the bypass Overload If the inverter is overloaded or the inverter current remains outside the specifications refer to Table 11 6 longer than the specified time the load will automatically transfer to the bypass with
33. be known as well For information of the UPS battery maintenance refer to 6 11 Battery Maintenance Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 11 This chapter lists the UPS specifications Chapter 11 Specifications 81 Specifications 11 1 Conformance And Standards The UPS has been designed to comply with the European and international standards listed in Table 11 1 Table 11 1 European and international standards Item Normative reference General safety requirements for UPS EN62040 1 1EC62040 1 AS62040 1 EMC requirements for UPS EN62040 2 IEC62040 2 AS62040 2 Method of specifying the performance and test requirements of UPS EN62040 3 IEC62040 3 AS62040 3 VFI SS 111 and 60529 Note The product standards in this table incorporate relevant compliance clauses with generic IEC and EN standards for safety IEC EN AS60950 electromagnetic emission and immunity IEC EN AS61000 series and construction IEC EN AS60146 series 11 2 Environmental Characteristics Table 11 2 Environmental characteristics Item Unit Rated power kVA 30kVA 40kVA Noise within 1m in the front dB A 56 58 Altitude m lt 1000 derate power by 1 per 100m when above 1000m Relative humidity RH 0 95 non condensing Operating temperature C 0 40 C Note Battery life is halved for every 10 C increase above 20 C Storage and transport ation C temperature
34. bypass switch Q3 is closed and UPS has input power it means UPS has outputs 5 9 Automatic Restart In the case of a mains failure the UPS draws power from the battery system to supply the load until the batteries are depleted When the UPS reaches its EOD threshold it will shut down The UPS will automatically restart and enable output power only when the following conditions are met 1 If Auto Recovery after EOD Enabling is enabled 2 After the Auto Recovery after EOD Delay Time expires the default delay is 10 minutes the UPS restarts bypass then inverter During the automatic recovery delay the UPS will charge its batteries to provide a safety margin for equipment shutdown if input power fails again 3 If the Auto Recovery after EOD Enabling feature is disabled the user may restart the UPS manually by pressing the FAULT CLEAR key first for two seconds and then ON key for two seconds A During the automatic restart process manual startup is disabled Automatic restart must be set by Emerson s authorized service engineer through Emerson setting software Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 5 UPS Operation Introduction 43 5 10 Selecting Language 5 11 5 12 The LCD menu and data display is available in 17 languages simplified Chinese traditional Chinese English Dutch French German Italian Japanese Polish Portuguese Russian Spanish Swedish Finnish Norwegian C
35. circuits also have hazardous voltage though the rectifier input switch bypass input switch and battery switch are disconnected Therefore the UPS maintenance is suitable for qualified personnel only 5 3 5 Transfer From Maintenance Mode To Normal Mode The following procedures will transfer the maintenance bypass supply mode of the UPS to the normal mode 1 Open the front door close the neutral line switch Q6 2 Close the output switch Q5 3 Close the bypass input switch Q2 4 After the LCD startup the system will transfer to the Event menu window till the system confirms that the record displays Bypass mode AA You must start the bypass first and then disconnect the maintenance bypass switch or it will cause output load power failure 5 Disconnect the internal maintenance bypass switch Q3 6 Close the rectifier input switch Q1 then the alarm indicator red is flashing 7 Press the ON key for two seconds The inverter starts up and the inverter indicator green is flashing After the inverter runs normally the UPS will be transferred from the bypass to inverter and then the inverter indicator green is on At the moment the load has transferred to UPS normal mode Liebert NXC 30kVA And 40kVA UPS User Manual 40 5 4 Chapter 5 UPS Operation Introduction Battery Self test Procedures The battery self test includes periodical self test and manual maintenance self test The b
36. contormity and standards This product complies with CE 2006 95 EC low voltage safety and 2004 108 EC EMC EMC standards of Australia and New Zealand C Tick and the following UPS product standards IEC62040 1 General safety requirements for UPS IEC62040 2 EMC 1EC62040 3 Performance requirements and test methods For details refer to Chapter 11 Specifications Continued compliance requires installation in accordance with these instructions and the use of manufacturer approved accessories only A J aming high earth leakage current Earth connection is critical before connecting the input supply including both mains supply and battery This equipment is installed with EMC filter Earth leakage current is 0 1000mA Transient and steady state earth leakage currents which may occur when the equipment is started should be taken into account in the selection of instantaneous RCCBs or RCD devices RCCB which is sensitive to unidirectional DC pulse class A and insensitive to transient state current pulse must be selected Note also that the earth leakage currents of the load will be carried by the RCCBs or RCDs The equipment must be earthed in accordance with the local electrical authority codes of practices The selection of the prestage distribution protection equipment of the UPS system must comply with the local electric regulations A J Warming backfeeding protection This
37. isch 34 bolck aximum battery discharge A 88 116 Batter current at full load y Reference rated current of BCB A 160 36 block Maximum battery discharge A 82 108 balt n current at full load ARI Reference rated current of BCB A 160 Maxi isch 38 block aximum battery discharge A 76 101 batter current at full load coma Reference rated current of BCB A 160 Maxi isch 40 block aximum battery discharge A 72 95 batter current at full load ae Reference rated current of BCB A 160 Note Refer to Figure 6 5 for the connections between the battery BCB and UPS Figure 6 5 Connections between the battery BCB and UPS 6 11 Battery Maintenance For the battery maintenance and maintenance precautions refer to IEEE Std 1188 2005 and the relevant manuals provided by the battery manufacturer A 1 Periodically check the screws of the battery connection parts and confirm that they are firmly tightened If there is any loosened screw tighten it immediately 2 Ensure that all safety devices are in place and operate normally and that the battery management parameters are set properly 3 Measure and record the air temperature inside the battery room 4 Check to ensure that the battery terminals have no damage or heat generating trace and the battery enclosure and terminal shields are intact Liebert NXC 30kVA And 40kVA UPS User Manual 54 Chapter 6 Battery 6 12 Disposal Of Used Battery If the battery has liquid leakage or is d
38. misreporting as faults 2 Close the bypass input switch Q2 rectifier input switch Q1 output switch Q5 and all external output isolating switches if any of the UPS in turn At the moment the system is power on and the startup screen pops up Refer to 4 2 1 Start Screen About 25 seconds later confirm that the LCD shows the rectifier power supply and the bypass power supply are normal if not check whether the switches Q1 and Q2 are closed Then the rectifier starts up and the alarm indicator red is on At the same time the bypass static switch is closed About 30 seconds later the alarm indicator red is flashing and then the rectifier startup is finished Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 5 UPS Operation Introduction 37 3 Press the ON key for two seconds The inverter starts up and the inverter indicator green is flashing After the inverter runs normally the UPS transfers from the bypass to inverter then the inverter indicator green is on 5 2 2 Startup Procedures In ECO Mode 1 Open the front door of the UPS ensure that the internal maintenance bypass switch Q3 is disconnected and switch Q6 is closed while the input cables and copper bars are reliably connected AAs All operations relating to disconnect or close the switch of maintenance bypass switch shall be finished within three seconds in case of misreporting as faults 2 Close the bypass input switch Q2
39. of each option 8 1 Option List See Table 8 1 for option list of the UPS Table 8 1 Option list No Option name Remark 1 Bypass load sharing inductor kit Common for 30kVA and 40kVA 3E DOCK battery Ki Or select the battery cable and battery tray battery string is user prepared 3 38 block battery kit 4 Battery temperature compensation kit Used together with UF RS485 card 5 Seismic anchor kit Common for 30kVA and 40kVA 6 Air filter 4 PCS 7 IS WEBL card Intellislot ports 1 3 Intellislot port 2 recommended 8 IS Relay card Intellislot ports 1 and 3 Intellislot port 1 recommended 9 IS 485L card Intellislot ports 1 and 3 Intellislot port 3 recommended 10 BCB box Used to connect and control the external battery string 11 Parallel cable Available in 5m 10m 15m 12 LBS cable Available in 5m 10m 15m 8 2 Opertion Introduction 8 2 1 Bypass Load Sharing Inductor Kit Install the bypass load sharing inductors for the parallel system comprised of two or more UPS modules to ensure the bypass output load sharing for the parallel system The bypass load sharing inductor is used to compensate the impedance differentia between SCR and cable See Table 8 2 for the specifications Table 8 2 Specifications of bypass load sharing inductor UPS kVA Dimensions H x W x D mm Inductor value uH 30 40 140 x 80 x 90 122 Each UPS cabinet has three bypass load sharing ind
40. power supply quality will be uncertain System Control Principle Normal operation Normal mode It means that the UPS has normal input mains the rectifier and inverter operate normally the load is supplied by the inverter the battery circuit breaker is closed and the battery is in stable floating charge state Parallel System Note As the single UPS module outputs are connected in parallel the system checks that the inverter control circuits are perfectly synchronized with one another and with the bypass in terms of both frequency and phase and that they have the same output voltages Current supplied to the load is automatically divided among UPSs A warning message appears while synchronization is in progress Mains abnormal When the mains fails or is abnormal the rectifier will stop working automatically and the system will transfer to battery output through inverter The length of the operation time in battery mode depends on the load and the battery capacity During this period if the battery voltage falls to the EOD voltage and the mains still has not been recovered the inverter will stop working automatically and the UPS operator control and display panel will display corresponding alarm messages If the system uses split bypass configuration and the bypass is normal the system will transfer to bypass Mains recovery When the mains resumes normal within allowable time the rectifier will start automatically
41. rectifier input switch Q1 output switch Q5 and all external output isolating switches if any of the UPS in turn At the moment the system is power on and the startup screen pops up Refer to 4 2 1 Start Screen About 25 seconds later confirm that the LCD shows the rectifier power supply and the bypass power supply are normal if not check whether the switches Q1 and Q2 are closed Then the rectifier starts up and the alarm indicator red is on At the same time the bypass static switch is closed About 30 seconds later the alarm indicator red is flashing then the rectifier startup is finished 3 Press the ON key for two seconds The inverter starts up and the inverter indicator green is flashing At this time the UPS is in ECO mode and powered by the bypass UPS operated in ECO mode 5 2 3 Startup Procedures In Battery Mode Battery Cold Start Note The startup function of battery mode is only applicable to the UPS equipped with internal battery 1 Verify that the battery has been connected and that the battery voltage is transferred to the input terminal of the battery 2 Open the front door and press the battery cold start button see Figure 5 2 for its position At the moment the startup screen pops up Refer to 4 2 1 Start Screen About 25 seconds later the rectifier starts up and the alarm indicator red is on About 30 seconds later the alarm indicator red is flashing and then the rectifier star
42. the precondition that the average temperature will not exceed 25 C it is allowed to have short time temperature deviation Number Of Batteries Set the DC bus voltage and battery float charging voltage which is usually 490Vdc according to the rated input output voltage of the UPS to ensure that the expected cell float charging voltage is 2 27V The number of batteries EOD voltage and float charging voltage under the 380V 400V 415V voltage system are consistent as shown in Table 6 2 Table 6 2 Number of batteries Parameter 380V 400V 415V Number of cells standard 192 240 PCS EOD voltage 1 60Vdc Cell 1 85Vdc Cell 1 62V cell recommended that is the EOD voltage is 389V Float charging voltage 2 15Vdc Cell 2 3Vdc Cell 2 27V cell recommended that is the float charging voltage is 490V Battery Protection The UPS inside has a fuse switch to protect the internal battery The Emerson BCB optional is recommended to protect the external battery The external battery is connected to the UPS through the BCB The BCB can be manually closed and has the electronic tripping device controlled by the UPS control circuit If the battery adopts rack mounting or is far away from the UPS cabinet the BCB shall be installed as close to the battery as possible and the wiring distance of the power and signal cables connected to the UPS shall be minimized The BCB has the following features 1 Isolated with the battery safe a
43. voltage Power factor Power factor Load Sout kVA Sout apparent power Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 4 Operator Control And Display Panel 31 Menu Item Explanation Pout kW Pout active power Qout kVAR Qout reactive power Load level Load expressed in percentage of the UPS rating load Crest factor Output current crest factor Sout kVA Sout apparent power Pout kW Pout active power System Qout kVAR Qout reactive power single nite Parallel Displayed on this data window when the UPS is configured as a single unit system data Battery voltage V Battery bus voltage Battery current A Battery bus current Banery temperature Built in battery temperature C oy pane Remaining battery backup time Battery Min Battery capacity Percentage of battery life when compared to a new battery Battery boost charging Battery is boost charging Battery float charging Battery is float charging Pantery 1s niot Battery is not connected connected Event active alarm Display the active alarms Records alarm history Display the alarm history Language language option Provide 17 optional LCD languages Display contrast Adjust the LCD contrast Date format set Three formats selectable MM DD YYYY DD MM YYYY YYYY MM DD Date 4 time Set the date and time Comm1 bau
44. voltage if the mains is recovered the UPS will restart automatically after a certain time of delay This function and the automatic restart type can be set by the service engineer authorized by Emerson Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 1 Overview During the process of automatic restart time of delay the UPS will charge the battery to protect against the power off risk of the load device caused by mains power failure If the automatic restart function has not been set the user can manually start the UPS through pressing the FAULT CLEAR key first and ON key next Bypass mode As shown in Figure 1 5 in normal mode in case of inverter failure inverter overload or inverter manual shutdown the static switch will transfer the load from the inverter side to bypass side with no interruption in power to the load At this time if the inverter and bypass are not synchronized the power of the load has transitory interruption with time of less than 20ms Static switch UPS output Bypass input e a Bypass input switch Output switch Figure 1 5 Schematic diagram of bypass mode Maintenance mode As shown in Figure 1 6 if the UPS maintenance or service is required you may use the manual maintenance bypass switch to transfer the load to maintenance bypass with no interruption in power to the load This maintenance bypass switch is fitted in all UPS modules and rated for full load of one module Maintenanc
45. 3 Battery switch control board 4 Battery switch 5 Cabling hole for confirming the cable size and opening hole 6 Wall mounted installation hole 7 Grounding bar 8 Insulating plate 9 Base plate 10 Visible cover Note The BCB box generally uses bottom cabling mode but you can rotate its bottom plate to use top cabling mode External battery string BCB eet 2100 X103 ups Batey UV T i N O AUX1 X104 terminal O Aux2 X105 Auxiliary ae J4 A me contactor BCB control board ommunication OO0OM box X101 X107 11509 O 2 HO 30 X108 X102 ololo olol GND GND1 FB AUX DRV DRV Note 1 See Table 6 5 for definition of port X102 2 X101 Hazardous Voltage Do not conncet this port to the battery unless a permission given by the service engineer 3 X103 X106 are used to connect temperature sensors from multiple battery cabinets 4 X107 is used to set jumpers according to whether the UPS has been installed a battery cold button If yes jumpers 1 2 setting is recommended if not jumpers 2 3 setting is required Figure 6 4 Connection of BCB box Table 6 5 Battery control port X102
46. EPO After shutting down the UPS through EPO or reasons of inverter overtemperature overload battery overvoltage and DC bus voltage clear the fault according to the alarm message displaying on LCD screen Then carry out the following reset procedures to make UPS resume normal operation After confirming the fault has been cleared and no remote EPO signal is received the user can carry out the following procedures 1 Press the FAULT CLEAR key over two seconds the system will exit the EPO state and the alarm indicator red is flashing 2 Press and hold the ON key over two seconds the inverter starts up and the inverter indicator green is flashing After the inverter runs normally the UPS will be transferred from the bypass to inverter and then the inverter indicator green is on Ar 1 The rectifier will start and the bypass will begin to power the load The rectifier indicator flashes while the rectifier is starting up When the rectifier enters normal operation about 30 seconds later the rectifier indicator turns solid green 2 The rectifier will start automatically when the overtemperature fault disappears five minutes after the disappearance of overtemperature signal 3 After the EPO switch is pressed if the mains input is cut off the UPS will shut down completely When the mains input returns the UPS will start up on bypass There will be power at the output terminals of the UPS AA If the maintenance
47. Figure 1 2 UPS power supply switch configuration 1 2 5 Battery Circuit Breaker BCB 1 3 1 3 1 1 3 2 The external battery shall be connected to the UPS through the BCB The BCB box is a standard option which shall be installed near the battery The BCB is closed manually or electrically The BCB has undervoltage tripping coil Upon the DC bus undervoltage the UPS control circuit will send a signal to the coil to trip the BCB It also has a magnetic trip facility for overload protection Parallel System Up to four UPS modules can be parallel connected to form a parallel system to increase the system capacity or reliability or both The load is equally shared between the paralleled UPS modules Moreover two UPS modules or parallel system can comprise a dual bus system LBS Each UPS module or parallel system has independent output Output synchronization is achieved through the LBS cable thus enabling seamless load transfer between the two systems Parallel System Features 1 The hardware and software of parallel system are completely the same as those of the single module The parallel system configuration is achieved through settings in configuration software or panel buttons 2 Parallel cables are connected in a ring providing both system reliability and redundancy LBS cables are connected between any two UPS modules of each bus The intelligent parallel logic provides the user with maximum flexibility For example shutting d
48. Inverter turning on starting up synchronizing or in stand by state ECO mode Liebert NXC 30kVA And 40kVA UPS User Manual 28 Chapter 4 Operator Control And Display Panel Off Inverter off Solid red Rectifier not ready or critical fault fro example inverter relay short circuit bypass STS short circuit bypass backfeed and inverter fault etc Alarm indicator Flashing red General fault for example module overload battery disconnected fan failure and parallel load sharing failure etc Off No fault 4 1 2 Audible Alarm Buzzer UPS activity is accompanied by the two kinds of sound listed in Table 4 3 Table 4 3 Description of audible alarm Alarm sound Meaning Alarm upon a general fault for example module overload battery disconnected fan failure parallel load sharing failure and battery discharge pre alarm etc Alarm upon a general fault for example inverter relay short circuit bypass STS short circuit bypass backfeed and inverter fault etc Beep every other second Continuous beep 4 1 3 Control Keys The operator control and display panel provides five control keys as described in Table 4 4 Table 4 4 Description of control keys Control key Silkscreen Description EPO switch EPO Cut off the load power and battery shut down the rectifier inverter static bypass Inverter start switch ON Start the inverter Inverter shutdown OFF
49. Liebert NXC 30kVA And 40kVA UPS User Manual Version V1 0 Revision date December 25 2012 BOM 31012710 Emerson Network Power provides customers with technical support Users may contact the nearest Emerson local sales office or service center Copyright 2012 by Emerson Network Power Co Ltd All rights reserved The contents in this document are subject to change without notice Emerson Network Power Co Ltd Address No 1 Kefa Rd Science amp Industry Park Nanshan District 518057 Shenzhen China Homepage www emersonnetworkpower com cn E mail support emersonnetwork com cn Special Declaration Personnel Safety 1 This product must be installed and commissioned by professional engineers of the manufacturer or its authorized agent Failure to observe this could result in product malfunction or personnel safety risk 2 Take the time to read this product manual and the safety precaution thoroughly before installing and commissioning this product Failure to observe this could result in product malfunction or personnel safety risk 3 This product cannot be used as power supply of life support equipment 4 Never dispose of the internal or external battery of this product in a fire as it may explode and jeopardize personnel safety when exposed to flame Product Safety 1 Ifthis product will be stored or remain de energized for a long period it must be placed in a dry and clean environment within specified temperature rang
50. PS overload status continues and the overload times out When the time has expired the load automatically transfers to the bypass Load impact transfer A transfer to bypass occurred due to a large step load The UPS can recover automatically Turn on the load equipment in stages to reduce the load impact on the inverter Transfer time out The load remains on bypass power owing to excessive number of transfers that occurred within the one hour Load sharing abnormal The UPSs in a parallel system are not sharing the load current correctly System transfer All UPSs in the parallel system transfer to bypass at the same time when one of them needs to transfer to bypass This message appears on the LCD of the UPS with passive transfer to bypass Control power fail The auxiliary power failure or power off EPO EPO button on operator control and display panel pressed or external EPO command received Fan fault At least one fan has fault Operation invalid Maintenance bypass switch is off when the parallel system is on inverter or output switch and maintenance bypass switch are off when the inverter is on LBS active The LBS setting is active LBS abnormal LBS is abnormal Maint sw open Maintenance bypass switch is open Maint sw closed Maintenance bypass switch is closed Output sw closed Output switch is closed Output sw open Output switch is open
51. S name configuration and alarm silencing state This window requires no user operation For details see Table 4 6 Table 4 6 Item description of system information window Item Explanation NXC UPS series name Configuration Single UPS module system with dual conversion ECO The UPS is set as a UPS module system and runs in ECO mode Single id Unit1 1 of the parallel system formed by up to four UPS modules POR VA UPS power is BOKVA COW I 16 2117 Currenttime format 24 hours hour minute second An Audible alarm enabled or disabled RL disabled OL enabled Menu window and data window The menu window provides the menus of the data window The data window displays the items of the menu selected in the menu window UPS parameters can be browsed and functions can be set through the menu window and data window Details are provided in Table 4 7 Table 4 7 Item description of menu window and data window Menu Item Explanation L N voltage V Phase voltage L N current A Phase current Mains Frequency Hz Input frequency L L voltage V Line voltage Power factor Power factor L N voltage V Phase voltage Bypass Frequency Hz Bypass frequency L L voltage V Line voltage L N voltage V Phase voltage L N current A Phase current OutPut Frequency Hz Output frequency L L voltage V Line
52. Shut down the inverter switch Fault reset switch FAULT CLEAR Clear fault to restart the UPS When an alarm is active pressing this key silences the audible alarm Pressin Alarm silencing switch ALARM CLEAR l i Pi SSSI S Ey 9 this key again enables the buzzer again Note It is required to hold and press the preceding keys for 2s to initiate the key function 4 1 4 LCD And Menu Keys 4 2 4 2 1 The operator control and display panel provides an LCD screen and five menu keys F1 F5 The menu keys are described in Table 4 5 Table 4 5 Description of menu keys Key F1 F2 F3 F4 F5 Esc lt ce ot Function 1 f gt ba HOME Escape Left Right Enter O Function 2 y Lb Up Down Providing 320 x 240 dot matrix graphic display the user friendly and menu driven LCD allows you to easily browse through the input output load and battery parameters of the UPS get current UPS status and alarm information and perform functional setting and control operation The LCD also stores up to 2048 historical records that can retrieve for reference and diagnosis LCD Screen Type Start Screen Upon UPS start the UPS executes self test and the start screen appears and remains approximately 25 seconds as shown in Figure 4 2 Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 4 Operator Control And Display Panel 29 EMERSON Network Power lO Liebert Figure 4 2 Start screen 4 2 2 Primary
53. UPS is fitted with a dry contact closure signal for use with an external automatic disconnect device supplied by others to protect against backfeeding voltage into the incoming terminal through the rectifier or bypass static switch circuit A label must be added at the external incoming bypass supply disconnect device to warn service personnel that the circuit is connected to a UPS The text of the label has the following meaning Risk of voltage backfeed Isolate the UPS then check for hazardous voltage between all terminals including the protective earth before working on this circuit A Ay corer safety precautions Like other types of large power equipment the UPS and battery circuit breaker box battery cabinet have high voltage inside Because the components with high voltage can be accessed only when the front door which is locked is opened the risk of contacting high voltage has been minimized This equipment meets the IP20 standard and other safety shields are provided inside the equipment There will not be any danger when operating this equipment according to the general instructions and the steps recommended in this manual A A serviceable components All the equipment maintenance and servicing procedures involving internal access need tools and should be carried out only by trained personnel The components that can only be accessed by opening the protective cover with tools special key cannot be main
54. UPS to allow a parallel system to perform an interrupted transfer from bypass to inverter This operation leads to output shutdown confirm or cancel The bypass is abnormal turning off the inverter will cause the load to be disenergized This operation leads to inverter overload confirm or cancel Turn on more UPS to carry current load Turning off this inverter will lead to the overload of the remaining inverter s in a parallel system The number of inverters already turned on is insufficient to carry the existing load The user is required to turn on more UPSs Battery will be depleted confirm or cancel If you select battery maintenance test the battery will discharge until the UPS shuts down This prompt appears to require your confirmation Canceling the test will ends the test and transfers the UPS to inverter mode System self test finished everything is OK No action required Please check the current warnings Check the active alarm messages Enter control password Required for battery or UPS test default 12345 Battery Self Test aborted conditions not met Battery self test condition is not met Please check if the battery is in boost charge state and the load is more than 20 Battery Refresh Charge aborted conditions not met This prompt appears when you select the Freshening charge command while the a battery freshening charge condition such as no battery charger failure
55. XC 30kVA And 40kVA UPS User Manual 18 Chapter 3 Electrical Installation Connection terminal and cable routing method Figure 3 2 shows the UPS power cable connection terminals Figure 3 3 and Figure 3 4 show the power cable entry and routing methods Av 1 The power cables should be routed through tunnels or cable troughs to prevent cable damage due to mechanical stress 2 When routing the cables inside the cabinets it is required to bind and fix the cables as instructed in Figure 3 3 and Figure 3 4 in the cabinets so as to prevent cable damage due to mechanical stress _ OMNI O 9 ao ce o o e e o BITS 5 SS SS 262656555 E q SSeS Sse eo 8 og SS SS SSS55555 nN N ro olf 6 0 Oh L I JL IL I I 1 I JL I i h SSSal Seles es acc SSeS SS S655 F eel 2 o So E E Bl L EE PE A lo e o o o lef jc L I I JL I I 1 I I I o o o o e a a a a L I I I 11 I 1 I I I lo 00 SSE SEE SESE L JL JL JL JL JL I JL JL JL o I 11 I JE Il I 11 IL 11 j ee
56. a deaescasaleascehnsaazsdueesintandasestapaseasduincaaicedeaniftac eskidaeuliasTisaesetediats 77 9 3 1 Communication Through IS Relay Card ecccceccecesceceseeeeneeseneeseeeseeeeeeeseeeeeaeeseeeseaeeseneeseeeeeeieeeseeeeeaes 77 9 3 2 Communication Through Dry Contact Port cecceecceeeeeeeeeeeeeneeeeeeeeeneeeeaeeseaeeeeaeeseaeeseeeseaeeeeeeseeeeeneeeeaes 78 Chapter 10 Service And Maintenance c ceccecescecesceeeneeeesceseaeeeeaeeeeaeeseaeeseaeeseaeesaeeseaeeseaeeeeaaeseaeeseaeeseaeeseaeeseaeeseeeseaeeee 79 10 Salesiana ni tdi sot naires ethan di lus la eleva ced N 79 10 2 Key Components And Service Life Of UPS oooococonccccoccccnnccnoncnnnnncnoncnnnncn non cn nan cc nan cnr arc r rra 79 10 2 1 Life Parameters And The Proposed Replacement Time Of Key Components c ccoocccnccccnoccconccnanccnanccnnnos 79 10 2 2 Replacement OfAir Fiter casio Sk head li tine ia de 79 10 2 3 Replacement Of Fuse rieien ira iaa icons 80 10 3 Maintenance Of UPS And OPptiOMS ooooccoccccccccinoccnacccnnnnnnanccnnncn nan cc nnn cn ran cnr rca 80 Chapter T1 Specifications vesical dida 81 V4 Conformance And Standards ci Adan hai 81 11 2 Environmental Characteristics sss cciriaiehseh sacs a a eee cnet al shled oa seth a RIE a aa aaa ice rial ares 81 11 3 Mechanical Characteristics a e ra aa A aa aa a aaa aa A aa oA a A a aia aa aE a iS sia 81 11 4 Electrical Characteristics Input Rectifier oonoccncninncdicnccnonocnnccnnoncnnnnnnnoronnnnn c
57. ads 29 4 3 Detailed Description Of Menu ltemS 0ooncccnnnccinccononononccononcnnnncon nn ccoo ronca cnn 30 44 Prompt WN dO es riada Rao 32 A EE EEEE A E TE EE 32 Chapters UPS Operation Introduction iienaa aa e naaa e E a aae eaa E aE Eaa ar aaa 35 9 1 Briet ntroduciON ctas a a ite eaten a a a S 35 Sha Precautions miyim an a aa olaa a al a a a ia 35 Di2 Power SWite heas aan eatin a a ei o E 35 5 2 UPS Startup Procedures iid of excised isere e ada htc tias 36 5 2 1 Startup Procedures In Normal Mode cecceeecceseeeeeeeeeeeeeeeeeseeeeeeeeeaeesaaeeseaeesaeeseaeesaeeseaeeesaeeseaeeeates 36 5 2 2 Startup Procedures In ECO Mode oooooccccnccccocccconononnncnonononnnnnononcnnnn cono ncnnn cnn cnc nn acc n errar cnc nene rre 37 5 2 3 Startup Procedures In Battery Mode Battery Cold Start ooonnccnnnccinnccnnnccnnnconncccnoncncnnnnnoncnnanncrarccnancnnnc 37 5 3 Procedures For Transfer Between Operation MOdeS cooocconccccoociconcconoccnnnncnoncnnnncnnnncnnnn cc nan cn nnn cn nan cara n cnn caracas 38 5 3 1 Transfer From Normal Mode To Battery Mode ooococccoocccconoccnonanancnononcncnnnon cnn nano cnn crono rn rnnnn nn r rana nennnnnnnn canos 38 5 3 2 Transfer From Normal Mode To Bypass Mod oooocccccooccccononcnonononcnononcnonanon cnc nanonnnnnon ore rnnnn nn n nano nen naar nnennnes 38 5 3 3 Transfer From Bypass Mode To Normal Mode oococcioncccconoccconononcnononcnononon cnn nano ncnnnonnnnr anno rnn rana nen nnen creces 38 5 3 4
58. amaged place the battery into the container that can withstand sulphuric acid and discard it according to the local regulations Used lead acid storage battery belongs to dangerous waste and it is a key item for used battery pollution control The storage transportation use and disposal of the battery shall comply with the national and local laws and regulations on dangerous waste and used battery pollution prevention and other standards According to the relevant national regulations the used lead acid storage battery must be recycled and shall not be disposed of with other methods Random discard or any other improper disposal of the used lead acid storage battery may cause severe environment pollution and the relevant person will be investigated of corresponding legal responsibilities Liebert NXC 30kVA And 40kVA UPS User Manual 7 1 7 2 7 2 1 7 2 2 Chapter 7 Parallel System And LBS System 55 Chapter 7 Parallel System And LBS System This chapter gives details on the installation of parallel system and LBS system General The parallel system can comprise of up to four UPS modules of the same power rating and connected in parallel without the need for a centralized mains static bypass Instead the bypass static switches of each UPS share the load when the system transfers to the mains bypass supply From a power viewpoint each module is internally identical to the single module configuration A parallel system req
59. and BAT to BAT N to N but disconnect one or more battery cell links in each tier Do not reconnect these links and do not close the BCB before authorized to do so by the service engineer Note When connecting the cables between battery terminals and BCB the connection should begin from the BCB terminal A 6 Replace the protective covers After connection take appropriate measures to seal the cable entry holes 3 2 Wiring Of Signal Cable 3 2 1 Overview For on site specific needs the UPS needs auxiliary connection to realize battery system including the external battery switch management communicate with PC provide alarm signal to external devices realize remote EPO or provide bypass back feed circuit breaker signal and parallel communication These functions are realized through the communication box in the UPS cabinet As shown in Figure 3 5 the communication box provides the following ports User dry contact port RS232 communication port USB communication port Parallel communication port LBS communication port RS485 communication port e Intellislot port Liebert NXC 30kVA And 40kVA UPS User Manual 22 Chapter 3 Electrical Installation LBS communication port RS485 communication port Parallel communication port USB li LBS 1
60. apter 3 Electrical Installation CSA Of UPS Cable The minimum CSA of the UPS cable is listed in Table 3 2 Table 3 2 Min CSA of the UPS cable unit mm ambient temperature 25 C Model Input Output Bypass Neutral line Earth cable Battery 30kVA 3 in 3 out 16 16 16 25 16 35 40kVA 3 in 3 out 16 16 16 25 16 35 Selection Of UPS I O Switch Table 3 3 is the recommended UPS I O switch capacity and the user can select it according to actual needs Table 3 3 Selection of the UPS I O switch Recommended capacit Output Recommended Model Input port x p i y BCB B capacity of output of input external switch port external switch Terminal 63A 3P bypass 100A Terminal kVA 3 in 3 DC 160A 4P A 3P 30 3 in 3 out block 3P C 160A 4P blcok 63A 3P Terminal 100A 3P bypass 125A Terminal A 3 DC 160A 4P 100A 3P 40kVA 3 in 3 out block 3P C 160A 4P block OOA 3P Note The BCB 125A is recommended for common input configuration Distance Between The UPS Connection Point And The Floor See Table 3 4 for details Table 3 4 Min distance between UPS connection point and floor Min distance mm UPS c cti oint Aa 30kVA 40KVA Rectifier input 345 345 Bypass input 284 284 AC Output 250 250 Battery 994 994 PE terminal 740 740 Notes The following points are for general guidance only If there are relevant local regulati
61. apter 4 Operator Control And Display Panel This chapter expounds the functions and use of the components on the operator control and display panel of the UPS provides LCD display information including the LCD screen types detailed menu messages prompt windows and UPS alarm list 4 1 Introduction The UPS front provides the operator control and display panel It is the access point for operator control and query all measured parameters UPS and battery status and alarms The operator control and display panel is divided into three functional areas LCD screen LED indicator and control keys as shown in Figure 4 1 and as described in Table 4 1 EMERSON Network Power O Liebert ALARM EPO LED indicators CLEAR LCD and control keys Figure 4 1 Operator control and display panel Table 4 1 Description of components of the operator control and display panel No Function Key Function 1 Alarm indicator Red F1 F5 LCD menu keys 2 Inverter indicator Green FAULT CLEAR Fault reset switch ON Inverter start switch OFF Inverter shutdown switch ALARM CLEAR Alarm silencing switch EPO EPO switch 4 1 1 LED Indicators The two indicators show the current working state of the UPS see Table 4 2 for details Table 4 2 Definition of indicators Indicator Status Description Po Solid green Load powered by the inverter Inverter indicator Flashing green
62. ass is normal the system will transfer to bypass The battery EOD voltage is preset When the mains is abnormal the battery maintains the UPS operation till the battery voltage is reduced to EOD voltage and the UPS shuts down this time is called Backup Time The length of backup time depends on the battery capacity and the loads Bypass Through the intelligent control of the Static Switch module as shown in Figure 1 1 containing the controllable electronic switch the loads can be supplied by the inverter or the bypass In normal situation the loads are supplied by the inverter in which case the inverter switch at inverter side is closed In the case of overload the overload delay time expires or inverter failure the inverter switch is opened and the Static Switch module will automatically transfer the loads to the bypass In normal operating state to realize the uninterrupted transfer between inverter and bypass the inverter output must be synchronized with the bypass Therefore when the bypass frequency is within the synchronization range the inverter control circuit will synchronize the inverter output frequency with the bypass frequency and phase Besides the UPS has a manual maintenance bypass switch for shutdown of the UPS upon maintenance In this situation the bypass will directly supply the critical loads through the maintenance bypass A When the load is supplied by the bypass or maintenance bypass the
63. attery discharge outputs 20 energy of the total battery energy Periodical self test is to test the battery activity The periodical self test is regular and the self test period can be configured via the Emerson setting software During the periodical self test if the battery maintenance requirement is satisfied the system will generate audible visual alarm and corresponding records The periodical self test does not update the battery curve table The mode of the manual maintenance self test is similar to that of the periodical self test except for the maintenance self test mode is started manually and this operation is valid only one time that is the system will not be automatically start up once you exits During the maintenance self test if the battery maintenance requirement is satisfied the system will generate audible visual alarm and corresponding records The maintenance self test does not update the battery curve table Note The periodical self test should satisfy the conditions of battery float charge at least 5h and generator not connected while the manual maintenance self test just satisfies the conditions of battery fully charged Achievement 1 Manual maintenance self test via the LCD 2 Periodical self test self test period can be configured via the Emerson setting software The range of battery self test period is 30 days 360 days default 60 days Self test startup conditions 1 System load rate is within 20
64. battery backup time i e the time for battery to supply load upon mains failure is subject to the ampere hour value of the battery Sometimes it is necessary to connect several strings of battery in parallel To facilitate the UPS installation the battery is generally installed on the specially designed battery rack or in the battery room During the maintenance or repair the battery must be disconnected from the UPS This operation may be realized by the battery circuit breaker of proper capacity This circuit breaker shall be located as close as possible to the battery connecting terminal and the wiring distance of the power and signal cables connected to the UPS shall be minimized When several strings of battery are paralleled to increase the battery backup time disconnecting device shall be equipped so that the maintenance operation on a certain battery string will not affect the normal operation of other battery strings 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 432Vdc This is potentially lethal Please follow the precautions for high voltage operation Only qualified personnel are 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 service pers
65. bert NXC 30kVA And 40kVA UPS User Manual 6 5 2 6 6 Chapter 6 Battery 47 Type Temperature Remark value Short time battery is over 40 C the service life of the battery will be reduced exponentially each allowable 15 C 45 day temperature The higher the temperature is the shorter the battery service life will be At low temperature the charge discharge performance of the battery will be significantly reduced The battery must be installed in cool and dry environment with the humidity less than 90 and be protected from the heat source and direct sunshine The ambient temperature ventilation space float boost charge voltage and ripple current will affect the battery temperature Uneven temperature among the battery strings will cause uneven voltage distribution and thus result in problem Therefore it is very important to maintain balanced temperature in the battery string and the temperature difference between batteries of different layers shall be kept within 3 C Valve regulated battery is very sensitive to the temperature therefore valve regulated battery shall be used in 15 C 25 C If the battery cabinet is installed near the UPS the maximum design ambient temperature shall be determined according to the battery rather than the UPS That is if valve regulated battery is used the indoor ambient temperature shall be 15 C 25 C rather than the operating temperature range of the main equipment Under
66. cautions This chapter describes the environmental and mechanical requirements and mechanical considerations that must be taken into account when planning the positioning and cabling of the UPS equipment Because each site has its particular characteristics this chapter does not provide the detailed installation steps it only acts as a guide for the general procedures and practices that should be observed by the installing engineer so that they can properly handle the specific situation of the site A AX ers professional installation required 1 Do not disassemble the package without permission of authorized service engineer 2 The UPS should be installed by an authorized engineer in accordance with the information contained in this chapter A eros battery danger Take special care when installing batteries When connecting batteries the battery terminal voltage will reach 320Vdc which is fatal to human being 1 Please wear safety glasses to protect the eyes from being damaged by arc 2 Remove all the metal items including finger rings watch etc 3 Use tools with insulated handle 4 Wear rubber gloves 5 If the battery has electrolyte leakage or the battery is damaged it must be replaced Place the battery into the container that can withstand sulfuric acid and dispose of it according to the local regulations 6 If the skin contacts the electrolyte flush it with water immediately 2 2 Transportat
67. connect any conductor between the positive and negative terminals of the battery Remove the finger rings watch necklace bracelet and other meta items before operating the battery and ensure that the tools e g wrench are covered with insulating material Otherwise battery burning human death injury or explosion may be caused 8 Do not disassemble modify or demolish the battery Otherwise battery short circuit liquid leakage or even human injury may be caused 9 Clean the battery enclosure with the wringed wet cloth To avoid any static or arcing do not use dry cloth or duster to clean the battery Do not use the organic solvent such as thinner gasoline volatile oil to clean the battery Otherwise the battery enclosure may be cracked In worst case fire may be caused 10 The battery has diluted sulfuric acid In normal use the diluted sulfuric acid will be absorbed to the baffle and polar plate of the battery However if the battery is damaged the acid may leak from the battery Therefore personal protective equipment e g protective glasses rubber gloves and apron must be used when operating the battery Otherwise if the diluted sulfuric acid enter the eyes blindness may be caused if it contacts the skin the skin may be burnt 11 The battery may have short circuit electrolyte dry up or positive pole erosion failure at the end of its life If it is still used under this state the battery may have thermorunaway bulging or
68. connection before starting up the system Figure 7 2 Parallel signal cables connection Parallel system Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 7 Parallel System And LBS System 57 7 2 5 Remote EPO 7 3 7 3 1 In addition to the EPO switch provided on the operator control and display panel of each UPS module for controlling the EPO of each module respectively the parallel system also provides remote EPO function for controlling all UPS modules to shut down simultaneously from a remote terminal as shown in Figure 7 3 A 1 The remote EPO switch must provide dry contact signal which is normally open or normally closed 2 The open circuit voltage provided is 12Vdc lt 20mA 3 The external EPO device can be composed of another control system which can disconnect UPS mains supply or bypass input J3 3 3 Communication J3 3 4 board Communication board EPO Communication board EPO Figure 7 3 EPO circuit diagram Note In Figure 7 3 the upper one is Normally Open type and the lower one is Normally Closed type Operation Procedures For Parallel System AAs If UPS input uses RCD differential switch is only used in the system s bypass mains supply At the moment of electrical connection current may not be immediately separated which may result in the tripping of RCCB respectively Only one step is needed for once a
69. d The IS 485L card can realize the conversion from UPS internal protocol to Modbus RTU protocol so the user can use the Modbus RTU protocol to manage the UPS acquire the UPS parameters operating status and fault types to achieve UPS monitoring For more information of the IS 485L card refer to the Liebert IntelliSlot Modbus 485 Modbus IP And BACnet IP Reference Guide in accessory The installation method of the IS 485L card is the same as that of the IS WEBL card described in 8 2 6 S WEBL card Refer to 3 2 11 Signal Cable Connection Steps for the cabling and routing of the signal cables 8 2 9 BCB Box Refer to 6 9 BCB Box for more information about the specifications battery connection of the BCB box Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 9 Communication 77 9 1 9 2 9 3 9 3 1 Chapter 9 Communication The UPS supports SNMP communication Modbus protocol communication dry contact communication and Velocity protocol communication This chapter provides information relevant to these types of communication Refer to corresponding settings in Table 4 7 for communication protocol transfer Selecting Velocity means the system supports the Velocity protocol communication selecting YDN23 means the system supports SNMP communication Modbus protocol communication dry contact communication SNMP Protocol Communication If you need to monitor the UPS through network you may select the IS WEBL card pro
70. d rate Set the communication baud rate of the Intellislot port 1 Comm2 baud rate Set the communication baud rate of the Intellislot port 2 Comm3 baud rate Set the communication baud rate of the Intellislot port 3 Communication Applicable to RS485 communication address Single Group Batt Cap Set the capacity of battery unit Battery Cells Number Set the battery cells connected to the UPS Equalize Charge Battery boost charge is enabled or not Allowed Temp Compensation Enabled Disabled Settings 3 Shared Battery Enabled Disabled System Configuration Single Parallel Parallel Requisite units Basic number of single modules in parallel system Skah necungant Redundant number of single modules in parallel system Parallel ID Provide one ID code for single module in parallel system when Parallel is set ECO Mode Normal ECO ve Frequency Set the system output frequency unit Hz 50 60 Output Voltage Level The voltage between phase line and phase line LBS Function NONE SLAVE MASTER Command password The user can modify the command password Protocol YDN23 Velocity Battery maintenance 20 battery capacity is out upon battery maintenance test Load must be between test 20 and 80 Command initiate stop battery system test or Battery capacity test Perform a full discharge of the battery to obtain a precise measure of the battery capacity Load must be between 20 and 80 System test Self test of the UPS When the user activates t
71. dimensions shown in Figure 2 7 5 Rotate the nuts from top to bottom till the nuts firmly press the foot fixing pieces and then use the fixing bolts M10 to fix the UPS on the floor Nut Foot fixing piece Installation hole Foot Lower left corner of the cabinet amplified view Figure 2 6 Schematic diagram for UPS positioning and fixing 2 7 Installation Drawings Figure 2 7 describes the key mechanical characteristics of the UPS Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 2 Mechanical Installation Top view door open 600 Air Air outlet outlet 1528 Right side view Front view Left side view L192 219 1 L 84 i o i access area 32 84 i i 863 724 gt i fet ste ea 1 C O 40 Y 55 1 e 600 11 foot installation hole Bottom view Figure 2 7 Top front side bottom view of the UPS unit mm Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 3 Electrical In
72. e 2 This product should be used in an appropriate operating environment For details refer to the section on the environmental requirement in this manual 3 It is prohibited to use this product in places where the temperature and relative humidity are outside the specifications subject to vibrations or shocks where conductive dusts corrosive gases salts or flammable gases are present near heat sources or strong electromagnetic interferences Disclaimer Emerson disclaims any and all responsibility or liability for the defection or malfunction caused by application range or operating environment outside the specifications unauthorized modification improper installation or operation force majeure other actions not in compliance with the instructions in this manual Safety Precaution This manual contains information concerning the installation and operation of single UPS module and parallel system of the Emerson NXC 30kVA and 40kVA UPS Read this manual thoroughly before installing using and servicing the UPS The UPS must be commissioned and serviced by trained engineers approved and qualified by the manufacturer or its agent Failure to observe this could result in personnel safety risk equipment malfunction and invalidation of warranty This UPS is a product for commercial and industrial application in the second environment Installation restrictions or additional measures may be needed to prevent disturbances N
73. e 21 EXT Q3 contact requirement of the external maintenance bypass bypass switch j switch Auxiliary contact of external bypass closed upon switch closed J2 2 2 GND GND External External output switch The auxiliary contact requirement output switch 2 3 EXT_OUT of the external output switch Auxiliary contact of external bypass closed upon switch closed 2 4 GND 2 3 and 2 4 have been shorted in factory 3 2 3 BCB Port J4 is the BCB port The port is shown in Figure 3 7 and described in Table 3 6 Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 3 Electrical Installation 23 UPS inside External ports J4 4 3 2 1 Figure 3 7 BCB port J4 Table 3 6 Description of BCB port J4 Silkscreen Port Pin No Pin name Meanings 41 DRV oe undervoltage release Normally 12V tripping at OV BCB backfeeding signal input normally open J4 BCB Normally open auxiliary contact signal of BCB 4 2 FB Auxiliary contact closed upon circuit breaker closed while auxiliary contact open upon circuit breaker open 4 3 GND GND 3 2 4 Backfeed Protection Dry Contact Port The backfeed protection dry contact port J5 is shown in Figure 3 8 and described in Table 3 7 The rated capacity of the backfeed protection dry contact is 240Vac 24Vdc 5A AA The voltage of the dry contact signal connected to J5 backfeed protection dry contact port may be dangerous Before connection make sure that you are connecting th
74. e 3 5 in the UPS For the installation and setting information of the IS WEBL card refer to the Liebert IntelliSlot Web Card Quick Start Guide in accessory Modbus Protocol Communication The UPS can achieve Modbus communication through the optional IS 485L card For the installation and use of the IS 485L card refer to the Liebert IntelliSlot Modbus 485 Modbus IP And BACnet IP Reference Guide in accessory Dry Contact Communication The UPS provides the following two dry contact communication approaches e S Relay card option eDry contact port Communication Through IS Relay Card The UPS provides an optional IS Relay card for the user to use dry contact signals to monitor the UPS The IS Relay card should be installed in an Intellislot port see Figure 3 5 of the communication box in the cabinet For the installation and use of the IS Relay card refer to the Liebert IntelliSlot Relay Card User Manual in accessory Liebert NXC 30kVA And 40kVA UPS User Manual 78 Chapter 9 Communication 9 3 2 Communication Through Dry Contact Port For on site specific needs the UPS may need auxiliary connection to achieve functions like acquiring external equipment status information providing alarm signals to external devices and remote EPO These functions are realized through the following interfaces on the external interface board EIB 6 nput dry contact port eOutput dry contact port eEPO input port For the functions and detailed i
75. e bypass switch Maintenance bypass Bypass input UPS output Figure 1 6 Schematic diagram of maintenance mode ECO mode If ECO mode is selected the double conversion UPS operation is inhibited most of time for the purpose of saving energy In this mode the bypass is the preferred source and only when the voltage and or frequency of the bypass supply are is beyond the pre defined threshold the critical AC load is transferred to the inverter if the inverter is synchronized with the bypass source the transfer will be instantaneous and during the transfer the output waveform will not exceed the limits set by IEC EN 62040 3 for a UPS to be classified as VFI SS 111 If the inverter is not synchronized with the bypass in order to avoid hazardous cross current bypass inverter changeover is triggered only after a few milliseconds maximum 20ms from when bypass has been disconnected from the load Then after bypass frequency and voltage have came back and remained within the predefined limits for at least five minutes the load is automatically and instantaneously transferred back to bypass source In this mode the system can normally charge the battery Static switch Bypass input Bypass input switch Rectifier Inverter Inverter switch Mains input la UPS output O O Rectifier input switch Output switch Battery Battery charger Figure 1 7 Schematic diagram of ECO mode If ECO mode is required
76. e cable to the right port LJ UPS inside External ports J5 4 3 2 1 Figure 3 8 Backfeed protection dry contact port J5 Table 3 7 Description of backfeed protection dry contact port J5 Silkscreen Port Pin No Pin name Meanings Rectifier oypass backfeed normally open contact Rectifier Bypass Open when there is no backfeed J5 backfeed output 5 3 BFP_S Rectifier bypass backfeed common contact Rectifier bypass backfeed normally closed contact Closed when there is no backfeed 5 2 BFP_O 5 4 BFP_C 3 2 5 Remote EPO Input Port The UPS has an EPO function that operates by an EPO button on the operator control and display panel of the UPS or by a remote contact provided by the user The EPO switch has a protective cover J3 is the remote EPO input port The port is shown in Figure 3 9 and described in Table 3 8 Liebert NXC 30kVA And 40kVA UPS User Manual 24 3 2 6 3 2 7 3 2 8 3 2 9 Chapter 3 Electrical Installation 12V UPS inside External ports J3 4 3 2 1 Figure 3 9 Remote EOP input port J3 Table 3 8 Description of remote EPO input port Silkscreen Port Pin No Pin name Meanings 31 EPO NC EPO activated when opened to 3 2 Pins 3 1 and 3 2 have been shorted in factory J3 Remote EPO input 3 2 12V EPO activated when opened to 3 1 3 3 12V EPO activated when shorted to 3 4 3 4 EPO_NO EPO activated when shorted to 3 3
77. e safety it is necessary to install external circuit breaker for the input and battery of the UPS Because of the difference of the specific installations this section only provides general practical information for the installation engineer The qualified installation engineer should have the knowledge of the local wiring regulations on the equipment to be installed Rectifier and bypass input power supply 1 Input overcurrent and short circuit protection Install suitable protective devices in the distribution line of the incoming mains supply The protective devices should provide functions such as the overcurrent protection short circuit protection isolation protection and tripping upon backfeed When selecting the protective devices consider the power cable current carrying capacity system overload capacity see Table 11 6 and Table 11 7 and the short circuit capability of the upstream power distribution It is generally recommended to use the thermomagnetic circuit breaker of IEC60947 2 tripping curve C normal when the current value reaches 125 of the current value listed in Table 3 1 2 Split bypass configuration If the UPS adopts split bypass configuration independent protective device shall be installed respectively on the rectifier input and bypass input distribution lines A The rectifier input and bypass input must use the same neutral line 3 Ground fault protection If the pre stage input power supply ha
78. el redundancy mode system expansion eL BS system mode eCommon battery string mode Normal mode As shown in Figure 1 3 the mains is rectified by the UPS rectifier and then inverted by the inverter to supply uninterrupted AC power to the loads At the same time the charger will charge the battery Rectifier Inverter Inverter switch Mains input UPS output O O Rectifier input switch Output switch Battery Battery charger Figure 1 3 Schematic diagram of normal mode Battery mode As shown in Figure 1 4 the operation mode in which the battery provides backup power supply to the loads through the rectifier and inverter is called battery mode Upon mains failure the system will automatically transfer to the battery mode with no load power interruption When the mains is recovered the system will automatically transfer back to the normal mode without any manual intervention and the power to the load will not be interrupted Rectifier Inverter Inverter switch UPS output O O Output switch Battery Figure 1 4 Schematic diagram of battery mode Note Battery cold start function is available for switching the UPS on from Battery charged mode directly during mains failure Therefore the battery power supply can be used independently to improve the availability of the UPS Automatic restart mode The UPS has automatic restart function When the inverter shuts down because the mains fails and the battery discharges to EOD
79. ere is any damage report to the carrier immediately 3 Verify the UPS label and confirm the correctness of the UPS The UPS label is attached on the back of the door The UPS model capacity and main parameters are marked on the label Environmental Requirement UPS Location Selection The UPS should be located in a cool dry clean air indoor environment with adequate ventilation and should be located on concrete or other nonflammable and flat surfaces The ambient environment should be free of conductive powder such as metallic powder sulfide sulfur dioxide graphite carbon fiber conductive fiber etc acid mist or other conductive media strongly ionized substances The environment specifications should comply with relevant international standard amp specifications and the operating range see Table 11 2 specified in this manual The UPS uses forced cooling by internal fans Cooling air enters the UPS through the ventilation grills at the front of the cabinet and exhausted through the ventilation grills at the back of the cabinet Do not obstruct the ventilation holes ventilation grills The rear of the UPS should be kept a distance at least 200mm from the wall to avoid blocking the UPS heat dissipation thus reducing the UPS internal temperature and improving the UPS life If necessary install indoor extractor fans to aid cooling air flow to avoid room temperature buildup Air filters optional should be used when the UPS is to ope
80. erminals z z Es ee UU Figure 3 4 Power cables wiring route bottom cable access Connection steps AAs Before cables connection make sure that all external and internal power switches of the UPS are off and post necessary warning signs to prevent inadvertent operation of the switches Meanwhile measure the voltages between the UPS terminals and the voltages between the terminals and the earth Refer to Figure 3 2 Figure 3 4 connect the power cables as described in the following procedures 1 Open the front door of the UPS and remove the protective cover located at the lower left corner to reveal the power cable connection terminals see Figure 3 2 2 Connect the protective earth cable to the PE input terminal in the cabinet AA 1 The earth cables and neutral line must be connected in accordance with local and national codes of practice 2 Failure to observe this could result in electric shock or fire risk 3 Identify and make power connections for the input cables according to one of the following two procedures depending on the type of installation Connection of common input 1 Connect the AC input cables to the bypass input terminals bA bB bC in the cabinet and ensure that the three shorting copper ba
81. esign A Precautions for installation use and maintenance of the battery are described in the relevant battery manual provided by the battery manufacturer The safety precautions described in this section include the important matters that must be considered during the installation design The design results may be changed according to the local situations Battery Installation Environment And Number Of Batteries Installation Environment Fresh air volume EN50272 2001 The operating environment of the battery must be ventilated During the operation of the battery the following requirement for the fresh air ventilation shall be satisfied Q 0 05xnxIgasxCrtx10 m h Where Q The fresh air ventilation volume per hour the unit is m h n Number of cells Igas The gas evolving current density under battery float charging or boost charge conditions the unit is mA Ah Igas 1 under the float charging condition of 2 27V cell Igas 8 under the boost charge condition of 2 35V cell Crt 20hr battery rated capacity Temperature Table 6 1 Ambient temperature range Te yes emperature Remark value Recommended The ambient temperature for the battery operation shall not be too high or too low optimal 20 C 25 C If the average operating temperature of the battery rises from 25 C to 35 C the temperature service life of the battery will be reduced by 50 If the operating temperature of the Lie
82. for UPS 40 C 70 C Over voltage level Overvoltage level 2 Pollution level Pollution level 2 11 3 Mechanical Characteristics Table 11 3 Mechanical characteristics haa Unit Rated power kVA i 30kVA 40KVA Dimensions W x D x H mm 600 x 850 x 1600 Net weight kg 210 Gross weight kg 245 Color Black ZP7021 Protection degree IEC 60529 IP20 front door open or closed Liebert NXC 30kVA And 40kVA UPS User Manual 82 Chapter 11 Specifications 11 4 Electrical Characteristics Input Rectifier Table 11 4 Rectifier AC input mains hon Unit Rated power kVA 30kVA 40kVA Rated AC input voltage Vac 380 400 415 3 phase 4 wire PE TN TT power distribution system Input voltage range Vac 305 477 Frequency Hz 50 60 range 40 70 kW kVA full load Power factor half load 0 99 0 98 Input current A rated 50 64 Linear full load lt 4 battery float Linear full load lt 4 battery float F charge charge e ali SS full load lt 6 battery dea full load lt 6 battery boost boost charge charge Puletone cad 5s to reach full rated current selectable 10s through 25s in 5 second intervals power walk in Note 1 Rectifiers operate at any of the rated supply voltages and frequencies without further adjustment 2 At 305V input mains the UPS maintains the specified output voltage at rated load without discharg
83. ge of certain battery At last the battery will have premature failure and the entire string of battery will have insufficient backup time The battery must be stored in fully charged state The battery will lose certain capacity because of self discharge during the transportation or storage Charge the battery before use During the storage ensure that the ambient temperature shall not exceed the range of 15 C 45 C and the optimal temperature is 20 C 25 C To compensate for the self discharge of the battery during the storage the battery shall be charged every 3 months during the storage The specific time may differ for different batteries For details refer to the requirement of the battery manufacturer It is very important to fully charge the battery before carrying out onsite test on the battery backup time The test may take several days Therefore it should be conducted after the battery has been subject to uninterrupted float charging for at least one week When the battery has been running for several weeks or subject to two to three charge and discharge cycles the battery performance will be increased To avoid the battery over charge or under charge please set the battery management parameters according to the equalizing float charge voltage and temperature compensation factor specified in the manuals provided by the battery manufacturer Please charge the battery immediately after discharge Precautions For Installation D
84. hed Two connection modes are available top cable access bottom cable access See Figure 3 10 and Figure 3 11 Step 1 Remove this right top cover and lead cables into cabinet Step 2 Lead cables to front Step 3 Connect cables to ic panel through cable trough corresponding terminals Figure 3 10 Signal cables wiring route top cable access Liebert NXC 30kVA And 40kVA UPS User Manual 26 Chapter 3 Electrical Installation Step 5 Route cables through cable trough Step 1 Remove this cover board and lead cables into cabinet Step 4 Remove this LiL cover board of the transfer terminal block Step 2 Use cable ties to fasten cables onto the cabling mount A A amplified view lero EEEE EE is eer 3H HELE Peis HHE Si Step 3 Remove this power distribution board Step 1 2 A Step 6 Use cable tie to fasten cable onto the cabling mount next to each port and connect cables to corresponding terminals B amplified view Figure 3 11 Signal cables wiring route bottom cable access Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 4 Operator Control And Display Panel 27 Ch
85. hieve the aim of cost saving clearance saving A The batteries of different manufacturers different types and different use time are not allowed to be used together The common battery string mode is suitable for parallel system only and does not support the LBS mode Battery Management The following battery management functions are set by the service engineer through the Emerson setting software Normal Function 1 Constant current boost charge The charge current can be set 2 Constant voltage boost charge The maximum boost charge voltage should not exceed 2 4V cell 3 Float charge The float charge voltage should be between 2 2V cell and 2 3V cell 4 Automatic transfer to float charge When the charge current is less than Threshold of Equalize Charge to Float Charge or 0 5A the charger will automatically transfer from boost charge to float charge When boost charge time exceeds the limit of Equalize Charge Protect Time Limit the charger will be forcibly transferred to float charge for protecting the battery 5 Float charge temperature compensation optional This function must be used together with the battery temperature detection device The Emerson battery temperature sensor is a standard option for your selection 6 EOD protection When the battery voltage drops to the EOD voltage the battery converter shuts down automatically and the battery is isolated to avoid further battery discharge The
86. his function a window appears about 5s later to show the test result freshening n charge Stop testing Manually SIOP a battery mamtenance test battery capacity test or system test Freshening charge Manually initiate a battery freshening charge Stop freshening charge Manually stop a battery freshening charge Eff Curve Eff Curve Display the system efficiency at current load Liebert NXC 30kVA And 40kVA UPS User Manual 32 Chapter 4 Operator Control And Display Panel Menu Item Explanation Run Time UPS Run time Display UPS accumulated run time Byp Run time Display UPS accumulated run time on bypass Version UPS version Provide UPS inverter rectifier and monitoring software versions UPS model Provide UPS model information for example 208V 60Hz Keypad window The functions of the menu keys F1 F5 for the current screen are shown by self explanatory icons in the keypad window as appropriate 4 4 Prompt Window A prompt window is displayed during the operation of the system to alert you to certain conditions or to require your confirmation of a command The prompts are provided in Table 4 8 Table 4 8 Prompts and meanings Prompt Meaning Transfer with interrupt confirm or cancel The load executes interval transfer between the inverter and bypass The load is too high to be transferred with interrupt The total load must be less than the capacity of one
87. hor 5 onto seismic anchor 3 6 Use four M12 expansion bolts to fix seismic anchor 5 on the ground as shown in Figure 8 14 Seismic anchor 5 M12 expansion bolt 4 pcs Figure 8 14 Fixing seismic anchor 5 on the ground 8 2 5 Air Filter The air filters need regular inspection and replacement The inspection and replacement intervals are related to the environmental conditions of the UPS See Table 8 4 for dimensions of the four air filters The life parameters and recommended replacement time of the air filter is listed in Table 10 1 and the replacement method of the air filter is shown in 10 2 2 Replacement Of Air Filter Table 8 4 Dimensions of air filter UPS kVA Dimension L x W mm PCS 30 40 455 x 376 3 30 40 200 x 152 1 8 2 6 IS WEBL Card Figure 8 15 shows the appearance of the IS WEBL card Liebert NXC 30kVA And 40kVA UPS User Manual 74 Chapter 8 Options IS WEBL Figure 8 15 IS WEBL card The IS WEBL card is a network management card It can make the UPS made by Emerson Network Power Co Ltd real network equipment It can also be connected to the IRM series sensor to provide environment monitoring function When the intelligent equipment generates an alarm the IS WEBL card can notify the user by recording the log sending trap information and sending a mail Preparation 1 Prepare the installation tools including a cross head screwdriver 2 Check that all installation materials are
88. in Figure 8 9 No J Remove the adjustable feet gt Adjustable foot 4 pcs i E Figure 8 9 Removing adjustable feet 2 Use four M16 x 50 sems screws to install seismic anchor 1 and seismic anchor 2 on the rear bottom of the UPS cabinet as shown in Figure 8 10 M16X50 sems screw 4 pcs Seismic anchor 2 Seismic anchor 1 Figure 8 10 Installing seismic anchor 1 and seismic anchor 2 3 Use four M16 x 50 sems screws to install seismic anchor 3 on the front bottom of the UPS cabinet as shown in Figure 8 11 then carefully place the UPS cabinet on the ground Seismic anchor 3 M1650 sems screw 4 pcs i Figure 8 11 Installing seismic anchor 3 4 As shown in Figure 8 12 use four M12 expansion bolts to fix seismic anchor 4 on the ground then push the UPS backward to insert seismic anchor 1 and seismic anchor 2 into the two holes of seismic anchor 4 respectively Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 8 Options 73 E J M12 expansion bolt 4 pcs AVE a AS Ze a A Seismic anchor 1 lt 2 Seismic anchor 4 Seismic anchor 2 Figure 8 12 Fixing seismic anchor 4 on the ground and fixing the cabinet ix seismic anchor 5 onto seismic anchor 3 as shown in Figure 8 13 gt O 5 Use four M10 x 30 sems screws Seismic anchor 5 M10X30 sems screw 4 pcs Seismic anchor 3 Figure 8 13 Fixing seismic anc
89. ing a battery 3 IEC62040 3 EN50091 3 at rated load and input voltage 400V battery fully charged 11 5 Electrical Characteristics Intermediate DC Circuit Table 11 5 Battery Rated power kVA ty of lead acl Quantity orlead acid Block 32 34 36 38 40 12Vdc blocks 2 27 selectable from 2 2V cell to 2 3V cell FI I V cell VRLA Cal vols a Constant current and constant voltage charge mode 7 emperature mV C cl 3 0 selectable from 0 to 5 0 around 25 C or 30 C or inhibit compensation Ripple voltage float lt 1 414 charge 2 le f 2 2 4 Boostvoltag V cell VRLA 35 selectable from 2 3 to 2 4 Constant current and constant voltage charge mode Float boost current trigger 0 050C selectable from 0 001 to 0 070 Boost float current trigger 0 010C selectable from 0 001 to 0 025 24h safety time timeout selectable from 8h to 30h Boost mode inhibit also selectable Boost control EOD voltage V cell VRLA 1 60 1 85 2 35 Battery Boost charge V cell Constant current and constant voltage charge mode Programmable automatic trigger or inhibit of boost mode 11 6 Electrical Characteristics Inverter Output Table 11 6 Inverter output to critical load Item Unit Rated power kVA BOKYA 40kVA Rated AC voltage Vac 380 400 415 3 phase 4 wire with neutral reference to the bypass neutral Frequency Hz 50 60 Liebert NXC 30kVA A
90. ion Railroad transportation and shipping are the recommended means of transportation If truck transportation is unavoidable choose roads that are less bumpy in order to protect the equipment The UPS cabinet is heavy see Table 11 3 for the weight It is recommended to use mechanical equipment such as an electric forklift to unload and move the equipment to the place closest to the installation site If an electric forklift is used insert the tines of the forklift below the bottom pallet as shown in Figure 2 1 to prevent the equipment from falling over x E a B Figure 2 1 Inserting and movement 2 3 Unpacking Unpack the UPS and battery packages under the guidance of authorized service engineer Steps 1 Remove the side panels and top cover Liebert NXC 30kVA And 40kVA UPS User Manual 10 Chapter 2 Mechanical Installation Use a hammer or straight screwdriver to straighten the connection hook that connects the side panels to the top cover as shown in Figure 2 2 Figure 2 2 Straightening the hook At first straighten all the hooks that fix side panel I and remove side panel Then straighten all the hooks that fix side panel II and remove side panel II At last remove top cover lll as shown in Figure 2 3 pe Figure 2 3 Removing side panels and top cover 2 Remove the fixing bolts of the bottom pallet see Figure 2 4 and
91. iring Of Signal Cable viii nia E Ln a NE TAE 21 322 1 O A ek 21 3 2 2 IMputiDiy Contact PO ninia obra 22 97253 BCB ONE 22 3 2 4 Backfeed Protection Dry Contact Port ceecceecceeeeeeeeneeeeeeeseeeeeaeeteaeeseaeeseaeeeeaeeseaeeseaeeseeeseaeeseeeeeneeeeaes 23 3 2 5 Remote EPO Input E E Ei 23 9 2 6 RS5232 Communication Po rindan 24 322 7 USB COmMUNICATION POMt 2 2204 224 anaa a A a a a aa a a a 24 3 2 8 Parallel And LBS Communication Ports ccccceesceeeeeeeeeeeeeneeeeaeeseaeeeeaeeseaeeeeaeeseaeeseaeeseeeseieeseneeenieeeeaes 24 3 2 9 RS485 Communication Port cecceesceceseeeeseeceneeeeaeeceaeeseaeeseaeeseaeeseaeeeeaeeseaeeseaeeseaeeseaeeseaeeseaeeseeeeeeeseaes 24 3 2 10 IntolliSiOt Porta chad tases o Meditn sa sekcapessancahdesesdenishdacag AA T TTT 25 3 2 11 Signal Cable Connection Steps eececceeeseceneeeeeeceseeeeaeeseneeeeaeeseaeeseaeeseaeeeeaeeseaeeseaeeseaeesnaeeseaeeseeeteaes 25 Chapter 4 Operator Control And Display Panel oonoonnnccnonccinnccnoncconancnnnncnnnncnnnncnnn nc non nc nan cnn ora nnn carne narran nn narran n na nnncnnnncinns 27 Ad INtTOdUCHION anae e E E AET a ai a 27 4 141 LED Indicators cios a as 27 4 1 2 Audible Alarm BUZZO ccoo ads 28 4 1 3 Gontrol KEYS vaciar a ii 28 4 4 4 LCD And Menu Keys aa hace eid atrial ed a did Ilo bdo de ia 28 4 2 LCD SCren TY Pess aa aa et 28 42A Stat Sor eNe sisi Uist A en dida aA 28 4 2 2 Primary SCre N visas A a eA ee ds 29 4 2 3 Defaul SOMA ee AA
92. iring according to Figure 8 8 pack the cables in order Note that the cables should be routed separately from the power cables to avoid EMI 8 2 4 Seismic Anchor Kit The UPS provides seismic anchor kits to avoid and reduce the damage to UPS caused by earthquake or vibration See Table 8 3 for dimensions of the seismic anchor kits Table 8 3 Dimensions of the seismic anchor kits UPS KVA Width mm Length mm 30 40 55 375 After fixing the UPS onto the concrete floor the seismic anchor kits should achieve Class 2 requirement of Table 2 in IEC60068 3 3 and satisfy the UBC 1994 standard earthquake area 4 from fierceness to very fierceness Liebert NXC 30kVA And 40kVA UPS User Manual 7 2 Chapter 8 Options AAs 1 Only Emerson authorized engineers shall carry out the installation 2 Carry out the installation strictly following the instructions Failure to observe this could cause personnel injury or damage to the UPS and seismic anchor kits Preparation 1 Prepare the installation tools including a cross head screwdriver a torque spanner and an adjustable spanner 2 Check that all installation materials are present and complete including five seismic anchors four M10 x 30 sems screws eight M16 x 50 sems screws eight M12 expansion bolts Procedures The installation procedures are as follows 1 Lift up the UPS cabinet and remove the four adjustable feet on the bottom as shown
93. lel system for repair due to serious fault 1 Pressing the EPO button stops the operation of rectifier inverter static switch and battery but this action will not affect other UPSs in parallel system to power the load normally 2 If the UPS has internal battery use the special tool to open the battery compartment then pull the three terminals BAT BAT and BAT N see Figure 5 3 for details If the UPS has external battery disconnect the corresponding switch of the external battery 3 Disconnect the rectifier input switch Q1 and bypass input switch Q2 and disconnect the output switch Q5 and neutral line switch Q6 At the moment all the internal power supply is closed and the LCD does not display any more AAs 1 Post a label at the AC input distribution generally far away from the UPS to alert that the UPS maintenance is being operated 2 Wait 10 minutes for the internal DC bus capacitance discharing Then the UPS is completely shut down 7 3 4 Procedures For Inserting One Isolated UPS Module In Parallel System A Important These procedures shall only be carried out by service personnel of Emerson or under their guidance The following procedures are used to reintegrate a UPS module that has been previously isolated from the parallel system Liebert NXC 30kVA And 40kVA UPS User Manual 60 Chapter 7 Parallel System And LBS System 1 If the UPS is connected with a battery just close the batter
94. liquid leakage Please replace the battery before it becomes 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 UPS Battery The UPS generally adopts valve regulated battery At present valve regulated means the sealed type or maintenance free mentioned in the past The valve regulated battery is not completely sealed especially when it is over charged there will be gas escape The volume of the gas escape is less than the water injection battery However during the installation design of the battery temperature rise shall be taken into account and enough room shall be reserved to ensure good ventilation Liebert NXC 30kVA And 40kVA UPS User Manual 46 Chapter 6 Battery 6 4 6 5 6 5 1 Besides the valve regulated battery is not maintenance free The valve regulated battery must be kept clean and it shall be inspected regularly to check if the connection is reliable and if it is corroded For details please refer to 6 11 Battery Maintenance It is suggested to connect no more than 4 strings of batteries in parallel Batteries of different types names or newness shall not be used together Otherwise the battery inconsistency will cause frequent over discharge or under char
95. nconncccnnnrncancccnnnns 59 7 3 4 Procedures For Inserting One Isolated UPS Module In Parallel SysSteM ooonnnccnnnnnnnininninnnccnnnccnncccnannns 59 7 3 5 Procedures For Completely Powering Down UPS ooconocccnocccoccconoccnoncnonnncnancnnancnnonc cnn cn ran ran cnn ca ranncnann 60 7 3 6 Procedures For Complete UPS Shutdown While Maintaining Power To L0AO ooconccconccnnnccconccnonccinnnao 60 LAURENT a ee 61 T amp A Gabinet installation A A eas 61 7 4 2 External Protective Devi miun a e e a E a 62 143 Power Calc A A a a A e a 62 TAALBS Calas A a aida 62 Chapter 8 Ops ida 64 Sal Option Listin dat 64 8 2 Opertion Introduction iaa aaa idas 64 8 2 1 Bypass Load Sharing Inductor Kiten iscan a a a a A r rana 64 8 2 2 Internal Battery Kitas iriser a a at See ee eee e 67 8 2 3 Battery Temperature Compensation Kib oonocinccinicicnccnoncconcncnonnnnnnncnonnnnnn corno na nnn nc non cnn rca n ra nnncnnnn 70 8 2 4 Seismic Anchor Kibaso nia datar ia iii 71 820 Airline 73 8 2 615 WEBL Gald ios daria 73 8 2 118 Relay Cad a ee dd 74 8 2 8 15 485 Caldo Rar Eb 75 8 2 9 BEBA et dee eee en ied i ee FERE aa EGT 76 Chapter 9 Communication rtiri 4 400 tthe te da ted i e aa aai ied dade tnd eh 77 9 SNMP Protocol COMMUNICATION raaraa aa a a aa ea isnt cha ada datarsacashcetaddeaessiedasiesacdsuatsasiliaaiasaesersaates 77 9 2 Modbus Protocol Communicati issir is ii 77 9 3 Dry Contact COMMUMIGATION lt 5i5c0seccasc ccd cesntcchecsdet
96. nd 40kVA UPS User Manual 11 7 11 8 Chapter 11 Specifications 83 Rated power kVA nem gon 30kVA AOKVA For linear load requirement lt 105 continues Overload 105 125 of rated load 5min 125 150 of rated load 1min gt 150 200ms penne load 100 capability Steady state voltage 1 for balanced three phase load 1 for balanced three phase load stability 12 for unbalanced load 12 for unbalanced load Transient votage 15 for 100 rated linear load step response Total harmonic voltage 2 0 100 linear load 2 0 100 linear load 5 0 100 non linear load 5 0 100 non linear load Synchronisation window Hz Rated frequency 0 5 1 2 3 optional Slew rate max change rate of synchronisation Hz s Setting range 0 1 0 6 UPS module 0 6 parallel system frequency Note 1 Factory set to 380V 400V or 415V selectable by service engineer 2 Factory set to 50Hz 60Hz selectable by service 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 EN 50091 3 1 4 58 crest factor 3 1 non linear load 4 IEC 62040 3 EN 50091 3 also for 0 100 0 load transient Transient recovery time return to within 5 of steady state output voltage within half a cycle Electrical Characteristics Bypass Input Table 11 7 Bypass input
97. nd only after finishing this operation step of each UPS module the next step can be carried on Startup Procedures In Normal Mode These procedures are applicable to start the UPS under total power down state which means the UPS or the maintenance bypass switch has not supplied the load before Make sure UPS has been completely installed and commissioned by the engineer and external power supply switch has been turned off AA Liebert NXC 30kVA And 40kVA UPS User Manual 58 Chapter 7 Parallel System And LBS System 1 These procedures result in mains voltage being applied to the UPS output terminals 2 If any load equipment is connected to the UPS output terminals check with the user that it is safe to apply power If the load is not ready to receive power disconnect the downstream load switch and stick a warning label on the connection point of the load Use the following procedures to turn on the UPS from a fully powered down condition 1 Confirm that the total external maintenance bypass switches are disconnected Open the front door of each UPS in turn ensure that the internal maintenance bypass switch Q3 is disconnected and switch Q6 is closed while the input cables and copper bars are reliably connected and the parallel cables are firmly connected AAs All operations relating to disconnect or close the switch of maintenance bypass switch shall be finished within three seconds in case of misreporting as fa
98. nd reliable 2 Short circuit protection 3 In case the inverter is locked because of battery under voltage the circuit breaker will be disconnected automatically to avoid battery over discharge 4 If remote EPO button is installed the EPO button can be used to disconnect the circuit breaker 5 Mis operation protection To obtain the required backup time the batteries may be connected in parallel In this situation the BCB shall be installed in the after stage of all the paralleled batteries A Only trained personnel shall operate and maintain the battery circuit breaker Liebert NXC 30kVA And 40kVA UPS User Manual 48 Chapter 6 Battery 6 7 6 7 1 Battery Installation And Connection Battery Installation 1 Before installation check the battery appearance to ensure that there is no damage inspect and count the accessories and carefully read this manual and the user manual or installation instruction provided by the battery manufacturer 2 There shall be at least 10mm gap between the batteries in vertical direction to ensure the free circulation of the ambient air of the batteries 3 Certain clearance shall be maintained between the battery top and the upper layer to facilitate the monitoring and maintenance of the battery 4 The batteries shall be installed from the bottom layer and from bottom to top so as to avoid a too high gravity center The battery shall be properly installed and protected from vibrati
99. ndow will appear to show the result of this diagnosis rectifier inverter monitor OK or fault 4 Stop the test If required the test may be stopped before completion by selecting Stop testing on the Command menu Refer to Chapter 4 Operator Control And Display Panel for more information UPS Shutdown Procedures Procedures For Completely Powering Down UPS Complete UPS shutdown and load power off should follow this procedure All power switches isolating switches and breakers are disconnected and then UPS no longer supplies power to load ZN esos The following procedures will cut off the load power making the load completely power off 1 Pressing the EPO button stops the operation of rectifier inverter static switch and battery 2 If the UPS has internal battery use the special tool to open the battery compartment door then pull the three terminals BAT BAT and BAT N see Figure 5 3 for details If the UPS has external battery disconnect the corresponding switch of the external battery 3 Disconnect the rectifier input switch Q1 bypass input switch Q2 output switch Q5 At the moment all the internal power supply is closed and the LCD does not display any more AAs 1 Post a label at the AC input distribution generally far away from the UPS to alert that the UPS maintenance is being operated 2 Wait 10 minutes for the internal DC bus capacitance discharging Then the UPS is completely shut down
100. nformation of these ports refer to 3 2 Wiring Of Signal Cable Liebert NXC 30kVA And 40kVA UPS User Manual 10 1 10 2 10 2 1 Chapter 10 Service And Maintenance 79 Chapter 10 Service And Maintenance The UPS system including battery needs regular service and maintenance in long term operation This chapter elaborates on the advice on the service life regular inspection maintenance and replacement of the UPS key components Effective maintenance of the UPS system can reduce the risk in UPS failure and prolong the UPS service life Safety AAs 1 Daily inspection of UPS systems can be executed by people who have received relevant training and the inspection and replacement of devices should be operated by authorized professionals 2 The components that can only be accessed by opening the protective cover with tools cannot be operated by the user Only qualified service personnel are authorized to remove such covers 3 Note that the neutral line has hazardous voltage when servicing the UPS Key Components And Service Life Of UPS When in use some devices of UPS system will have shorter service life than UPS itself due to abrasion in work For the safety of UPS supply system it is necessary to have regular inspection and replacement of these devices This section introduces the key components of UPS and the reference years of service life For systems under different conditions environment load rate and etc a
101. oltages are abnormal and the output is off The phase rotation of the bypass voltage is reversed The bypass current is outside the rated current Bus voltage abnormal or battery SCR short circuit The temperature of the rectifier radiator is so high that the inverter cannot operate normally The rectifier inverter and battery converter shut down because the DC bus voltage is too high The load transfers to bypass DC bus abnormal The DC bus voltage is abnormal and results in inverter shutdown The load transfers to bypass Inverter asynchronous The output voltage and bypass voltage are misaligned in phase This alarm resets automatically once the condition is no longer true Inverter fault Inverter output voltage outside specifications Load transfers to bypass Inverter relay fail At least one of the inverter relays is opened or shorted This fault is locked until mains power off Output fuse fail At least one of the inverter output fuses is blown Output volt abnormal At least one phase of the output voltages is abnormal Unit overload This alarm appears when the load arises above 105 of the nominal rating The alarm automatically resets once the overload condition is removed System overload This alarm appears when the total load rises above 105 of the nominal rating of the parallel system The alarm automatically resets once the overload condition is removed Unit overload timeout The U
102. om the bottom layer upwards to avoid falling over caused by high gravity center Liebert NXC 30kVA And 40kVA UPS User Manual W66 BATN BOX Chapter 8 Options 69 Pa W56 BAT N BUS cad Pla E la la U ic p A a aa LA Sey oy
103. omatically or manually through the command of battery maintenance test in LCD Interval 30 360 days default setting 60 days The UPS also provides battery capacity self test function Periodically test the battery activity test the battery residual capacity judge the battery quality and then provide the corresponding measures The capacity self test is started by the user through the operator control and display panel During the capacity self test the battery will continuously discharge to the battery undervoltage shutdown threshold After the self test is finished the system will update the battery curve table The capacity self test command is valid only one time without any memory During the capacity self test if the battery maintenance requirement is satisfied the system will generate audible visual alarm and give corresponding records Conditions System load rate within 20 100 battery float charge at least 5h and generator not connected the current system is in float charge state Trigger Start up through the LCD Note 1 The battery will continuously discharge to the battery undervoltage shutdown threshold then the battery transfer to the charging state When the capacity self test is finished the system will update the battery curve table 2 The user can manually stop the capacity self test operation through the LCD Battery Temperature Compensation The UPS system has battery charge temperature compensation func
104. on 35 Chapter 5 UPS Operation Introduction This chapter introduces the operating precautions and daily operating methods of UPS in detail Brief Introduction Precautions A Important The user can conduct relative operation only after the authorized engineer carries out the first power on and test A ems hazardous mains and or battery voltage 1 The components that can only be accessed by opening the protective cover with tools cannot be operated by the user Only qualified service personnel are authorized to remove such covers 2 The AC input and output terminals of UPS have dangerous voltage at any time If the cabinet is equipped with an EMC filter the filter may have dangerous voltage 1 For the control keys and LCD related to all the operating steps refer to Chapter 4 Operator Control And Display Panel 2 During operation the buzzer alarm may occur at any time Press ALARM CLEAR key to silence the audible alarm 3 When UPS uses traditional lead acid battery the system provides boost charge optional function If the lead acid battery is used when the mains returns after an extended mains failure the charging voltage of the battery will be higher than the normal charging voltage this is normal and the charging voltage of the battery will return to normal value after a few hours charging Power Switch Opening the front door of the UPS cabinet reveals the power switches as shown in Figure 5 1
105. on or shock 6 7 2 Battery Connection 1 All the battery cabinets or battery racks must be connected together and properly grounded 2 When multiple batteries are used they shall be connected in series and then in parallel Before loading and power up it must be detected that the total voltage of the batteries is as specified The negative and positive poles of the batteries must be connected to the negative and positive battery terminals of the UPS according to the labels on the battery and UPS If the battery is reversely connected explosion and fire may be caused it may result in battery and UPS damage or even human injury 3 When the battery cable connection is completed install insulating shield for the terminals 4 When connecting the cable between the battery terminal and the BCB the BCB terminal shall be connected first 5 The bending radius of the cable shall be larger than 10D wherein D is the outer diameter of the cable 6 When the battery cable is connected it is prohibited to pull the battery cable or the cable terminal 7 Do not cross the battery cables during the connection and do not tie the battery cables together 8 See Figure 6 1 for battery connection Liebert NXC 30kVA And 40kVA UPS User Manual W39 CROSS1 Sl le e W39 CROSS1 w39 CROSS W39 CROSS1 4 W39 CROSS1 W39 CROSS1
106. onnel Confirm that the battery switch has been disconnected before battery maintenance A ems 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 working on the copper bars connected to the external battery please ensure they are disconnected from all power supplies Proper connection mode Improper connection mode Too large or too small torque may cause poor connection of the terminal Under certain conditions the terminal may have arcing or heat accumulation which finally will cause fire Tighten the terminal bolt of the battery with specified torque 3 Observe the following safety precautions when working on the batteries 1 The battery shall be firmly and reliably connected After the connection is completed the screw connections between all the terminals and the batteries shall be calibrated The requirements on torque specified in the specifications or user manual provided Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 6 Battery 45 A ems hazardous battery voltage present behind covers by the battery manufacturer shall be satisfied The connections between all the wiring terminals and the batteries shall be inspected and tightened at least once a year Otherwise it may cause fire 2 The battery a
107. ons the local regulations shall prevail 1 The cable size of the neutral line shall be selected according to 1 5 times of the output bypass phase current 2 The cable size of the protective earth cable shall be selected according to the AC power failure level cable length and protection type The grounding wire connection must use the shortest connection route 3 For the cables with large current parallel connection of small cables can be adopted to facilitate the installation 4 When selecting the battery cable size the current value in Table 3 1 shall be referred to and a maximum voltage drop of 4Vdc is allowed 5 Do not form coils so as to minimize the formation of EMI Power Cable Connecting Terminal The rectifier input bypass input output and battery power cables are connected to the corresponding terminals shown in Figure 3 2 Protection Ground The protective earth cable is reliably connected to the PE input terminal see Figure 3 2 via the fixing bolt All the cabinets and cable troughs shall be grounded according to the local regulations The grounding wires shall be tied up reliably to prevent the loosening of the grounding wire tightening screws when the grounding wires are pulled AA Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 3_ Electrical Installation 17 Failure to ground as required can cause EMI electric shock or fire risk 3 1 9 External Protective Device To ensure th
108. or is mounted far from the UPS with other installation mode the battery circuit breaker shall be installed near the battery and the cabling distance shall be minimized Storage Should the UPS not be installed immediately it must be stored with the original packaging in a room for protection against excessive humidity and heat sources see Table 11 2 The battery needs to be stored in a dry and cool place with good ventilation The most suitable storage temperature ranges from 20 C to 25 C AAs During battery storage periodically charge the battery according to the battery manufacturer instructions In the charge process temporarily connect the UPS to the mains and activate the battery by recharging the battery Mechanical Requirement Moving Cabinet AAs 1 The lifting equipment for moving the UPS cabinet shall have enough lift capacity 2 The UPS has installed castors When removing the UPS from the shipping pallet pay attention to keeping the UPS from sliding Ensure that adequate personnel and lifting equipment are available when removing the shipping pallet 3 Due to its intensity the castors may be valid only on the flat surface 4 The gravity center of the UPS cabinet is high avoid falling over during the cabinet movement 5 Vertical hanging of cabinet is not allowed ZN cion Take special care when moving the battery cabinet fitted with batteries in which case you must fasten each battery string and t
109. ot be interrupted Design Concept System Design This section introduces the working principle of the single UPS module The UPS adopts AC DC AC converter as shown in Figure 1 1 The first stage conversion AC DC adopts three phase high frequency rectifier to convert the three phase input voltage into stable DC bus voltage Input Output Maintenance bypass switch Maintenance bypass Static switch Bypass input Bypass input switch Rectifier Inverter Inverter switch Mains input A Rectifier input switch UPS output Output switch Battery Battery charger Figure 1 1 Block diagram for working principle of single UPS module The UPS has its own battery charger and adopts advanced temperature compensation technology to effectively prolong the battery service life The inverter mainly adopts large power IGBT and adopts advanced SVPWM technology for control to invert the DC bus voltage back to AC voltage When the mains is normal the rectifier and inverter work together to supply the loads and charge the battery Liebert NXC 30kVA And 40kVA UPS User Manual 1 2 2 1 2 3 Chapter 1 Overview When the mains is abnormal the rectifier stops working and the battery supplies power to the loads through the inverter If the battery voltage falls to end of discharge EOD voltage and the mains still has not been recovered the UPS will shut down if the system uses split bypass configuration and the byp
110. out power interruption If both the overload and the current are reduced to a level within the specified range then the load will be transferred back to the inverter In case of output short circuit the load will be transferred to the bypass and the inverter will shut down Five minutes later the inverter will start up automatically If the short circuit is removed at this point the load will be transferred back to the inverter The transfer is determined first of all by the features of the protective device of the system In the above two situations the UPS operator control and display panel will display alarm messages Parallel System The control logic system constantly monitors load requirements and controls the power supplied by each UPS module In the event that an overload condition is sustained for greater than a preset time the load will transfer to the bypass when the number of active modules is unable to satisfy load requirements The load returns to the inverter if the power is reduced to a value that can be sustained by the number of active modules in the system Maintenance bypass The UPS has a second bypass circuit i e maintenance bypass which provides a safe working environment for the engineers to provide regular maintenance or repair to the UPS system and at the same time provide unregulated mains supply to the loads The maintenance bypass can be manually selected through the maintenance bypass switch and it can be disconnec
111. overdischarge and overcurrent and also isolates the UPS and battery thus reducing the risk at lowest for service personnel during the maintenance The box inside has connection bars for connecting the power cables from the UPS and batteries Note The signal cables from the UPS to the BCB control board must be routed in a separate cable trough and separated from battery power cables The separate safety earth must be connected between the UPS and BCB box The BCB box is provided as follows according to different UPS rated power Table 6 3 Parameters of BCB box Dimensions H x W x D mm Weight kg BCB 558 x 378 x 180 21 5 160A 4 poles Note This weight excludes the packing The BCB has the following advantages Short circuit protection and EOD protection When the battery voltage drops to EOD the BCB will be switched off automatically UPS EPO When pressing the EPO button the BCB will be switched off automatically Figure 6 3 BCB box Liebert NXC 30kVA And 40kVA UPS User Manual 52 Chapter 6 Battery Table 6 4 Description of BCB box components No Component 1 Battery connection terminal N 2 UPS connection terminal N
112. ower to the load by the inverter Transfer From Normal Mode To Bypass Mode Press the OFF key for two seconds the inverter indicator green is off and the UPS will be transferred from normal mode to bypass mode A In bypass mode the load is directly fed by the mains power instead of the pure AC power from the inverter Transfer From Bypass Mode To Normal Mode When the UPS is in bypass mode press the ON key for two seconds the inverter starts up and the inverter indicator green is flashing till the inverter enters normal operation then the UPS is transferred from bypass mode to normal mode Transfer From Normal Mode To Maintenance Mode The following procedures will transfer the UPS from inverter output mode to the maintenance bypass mode Luin power supply interruption danger of the load Before making this operation read the information on the LCD to make sure that the bypass supply is normal and that the inverter is synchronous with the bypass supply so as not to risk a short interruption in power to the load 1 Press the OFF key at least two seconds At this point the inverter indicator green turns off accompanied by an audible alarm The load transfers to the static bypass and the inverter shuts down A Pressing the ALARM CLEAR key cancels the audible alarm but leaves the alarm message displayed until the alarm condition is rectified 2 Close the maintenance bypass switch
113. own or starting up UPS modules in a parallel system can be done in any sequence Transfers between normal mode and bypass mode of operation are seamless and self recoverable that is the overload is cleared and the system will be automatically recovered to its original operation mode 3 The total load of the parallel system can be queried from each UPS module s LCD Parallel System Requirements A group of paralleled modules behave as if it were one large UPS with the advantage of presenting higher reliability To ensure that all modules are equally utilised and to comply with relevant wiring rules the following requirements apply 1 All UPS modules must be of the same rating and must be connected to the same bypass source 2 The bypass and rectifier input sources must be connected to the same neutral line input terminal 3 Any RCD if installed must be of an appropriate setting and located upstream of the common neutral line input terminal Alternatively the device must monitor the protective earth current of the system Refer to Warning high earth leakage current before Contents Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 1 Overview 5 4 For parallel system consists of two or more UPS modules the bypass load sharing inductors optional should be selected 1 4 Operation Modes The UPS has the following operation modes Normal mode Battery mode Automatic restart mode Bypass mode Maintenance mode eECO mode Parall
114. ppearance must be inspected before accepting and using the battery If there exists any package damage dirty battery terminal terminal erosion rust or enclosure crack deformation or liquid leakage replace it with a new battery Otherwise battery capacity reduction electric leakage or fire may be caused Battery damaged during handling or transportation After a week of normal charge discharge experiment 3 The battery is very heavy Please use proper method to move and lift the battery so as to prevent any damage to human being or the battery terminal Severe damage to the battery may cause fire 4 The battery connecting terminal shall not be subject to any force such as the pulling force or twisting force of the cable otherwise the internal connection of the battery may be damaged Severe damage to the battery may cause fire 5 The battery shall be installed and stored in a clean cool and dry environment Do not install the battery in a sealed battery chamber or a sealed room The battery room ventilation shall at least meet the requirement of EN50272 2001 Otherwise battery bulging fire or even human injury may be caused 6 The battery shall be installed far away from the heating products e g transformer used or stored far away from any fire source and shall not be burnt or put into fire for heating Otherwise battery leakage bulging fire or explosion may be caused 7 Do not directly
115. pply to the load Refer to the procedures in 7 3 2 Maintenance Bypass Procedures Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 7 Parallel System And LBS System 61 7 4 LBS System 7 4 1 Cabinet Installation An LBS system consists of two independent UPS systems each containing one or more parallel UPS modules as shown in Figure 7 4 and Figure 7 5 The LBS system has high reliability and is suitable for load with multiple inputs For single input load an STS can be installed to feed power to the load The system uses the LBS cables to keep the output of the two independent or parallel UPS systems in synchronization One system is designated as the master the other is designated as the slave The operation modes of the parallel system comprise master and or slave operation in normal or bypass mode Place the UPS modules side by side and interconnect the UPS modules according to the following instructions Bypass Bypass y y Rectifier Rectifier To load Figure 7 4 LBS system UPS module Liebert NXC 30kVA And 40kVA UPS User Manual 62 Chapter 7 Parallel System And LBS System Bypass Bypass Rectifier UPS 1 ups4 Rectifier Rectifier UPS 1 ups 4 Rectifier ee eee pe paa cee ease o lana ede erate A Q2 asi QU 2 yoi QU 2 aay ts Q2yQ3y sa HHE HH
116. present and complete including an IS WEBL card A No need to shut down the UPS during IS WEBL card installation because the IS WEBL card is hot pluggable D Some electron components in IS WEBL card are sensitive to static therefore do not touch the electron components or circuit in IS WEBL card by hand or other conductive materials so as to protect the IS WEBL card against static shock When removing or installing the IS WEBL card hold the card side edge to operate it Procedures The IS WEBL card should be installed in the Intellislot port see Figure 3 5 in the UPS See Table 3 9 for installation positions of optional cards Method for installation 1 Remove the cover of Intellislot port Note to reserve the removed screws and take care of the cover for future use 2 Insert the IS WEBL card along two sides of the Intellislot port into the port position recommended in Table 3 9 and then fasten the screws For more information of the IS WEBL card refer to the Liebert IntelliSlot Web Card Quick Start Guide in accessory Refer to 3 2 11 Signal Cable Connection Steps for the cabling and routing of the signal cables 8 2 7 S Relay Card Figure 8 16 shows the appearance of the IS Relay card Liebert NXC 30kVA And 40kVA UPS User Manual 8 2 8 Chapter 8 Options 75 IS Relay ISRELAY ag tas Y Figure 8 16 IS Relay card The UPS provides IS Relay card for the user to use the dry contact
117. procedures 1 On the OutPut menu screen press the F3 left or F4 right key to select the Settings menu 2 Press the F5 enter key to move the cursor to the data window of the screen 3 Press the F3 up or F4 down key to select the Command password item and press the F5 enter key to confirm then Command password is changed to Enter old password 4 Press the F4 key to move the cursor to corresponding password position and press the F3 key to select the number from 0 9 for this position After the five digits input press the F5 enter key to confirm at this moment Command password is changed to Enter new password 5 Similar to step 4 press the F3 and F4 to input new password and press the F5 enter key to confirm at this moment Command password is changed to Enter new password again 6 Similar to step 4 press the F3 and F4 to input new password again and press the F5 enter key to confirm then press the F2 ESC key to return to the OutPut menu Liebert NXC 30kVA And 40kVA UPS User Manual 44 Chapter 6 Batter 6 1 6 2 Chapter 6 Battery This chapter introduces the battery including the battery safety installation and maintenance information battery protection function as well as the connection of BCB box optional Introduction The UPS battery string is composed of several batteries in series connection and provides rated DC input voltage for the UPS inverter The required
118. r single UPS module shutdown and 7 3 5 Procedures For Completely Powering Down UPS for parallel system shutdown 3 All the LCDS are off wait five minutes for the internal DC bus capacitors of the UPS complete discharging 2 Connect one end of the specified cable to either port of the battery temperature sensor and the other end to each port of UF RS485 card See Figure 8 6 Figure 8 6 Connection between UF RS485 card and battery temperature sensor Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 8 Options 71 3 According to Figure 8 7 dial the DIP switch 6 or 5 to ON making the lower left corner of the LCD screen of temperature sensor display 01 or 02 If two temperature sensors are used together their DIP switches are not allowed to be superposition Figure 8 7 DIP switch of temperature sensor 4 Remove the right side panel of the cabinet place the battery temperature sensor onto the back area of the battery tray 1 and then insert the UF RS485 card into the Intellislot port 1 The installation method of the UF RS485 card is the same as that of the IS WEBL card described in 8 2 6 S WEBL card Refer to Figure 8 8 for installation and connection of the battery temperature sensor Route cables along the cabinet column and connect them to corresponding terminals y Installation position of tlt battery temperature sensor Figure 8 8 Installation and connection of battery temperature sensor 5 W
119. rate in a dirty environment Note 1 When the battery cabinet is installed near the UPS the maximum allowable ambient temperature is dependent on the battery rather than the UPS Note 2 If the UPS is working in ECO mode the power consumption will be less than that in Normal mode Proper air conditioning system shall be selected according to the normal operating mode Liebert NXC 30kVA And 40kVA UPS User Manual 12 2 5 2 2 5 3 2 6 2 6 1 2 6 2 Chapter 2 Mechanical Installation Battery Location Selection Batteries generate some amount of hydrogen and oxygen at the end of charge so the fresh air volume of the battery installation environment must meet the EN50272 2001 requirements The ambient temperature is the main factor that affects the battery capacity and life The normal operating temperature of the battery is 20 C If the ambient temperature is higher than 20 C the battery life will be reduced If it is lower than 20 C the battery capacity will be reduced In normal situation the allowable ambient temperature for the battery is 15 C to 25 C The ambient temperature of the battery shall be maintained constant and the battery shall be kept away from heat source and air outlet Battery can be installed inside the specialized battery cabinet which shall be close to the UPS If the battery is placed on the raised floor bracket shall be installed under the floor just as for the UPS If the battery adopts rack mounting
120. reserve the fixing bolts Then use the forklift following the inserting direction shown in Figure 2 4 to move the cabinet near the installation place Forklift inserting direction Fixing bolt Bottom pallet Figure 2 4 Removing bottom pallet 3 After moving the cabinet to the installation place you should raise the four adjustable feet and then use the castors to move the cabinet to its final installation site Liebert NXC 30kVA And 40kVA UPS User Manual 2 4 2 5 2 5 1 Chapter 2 Mechanical Installation 11 Method of raising one foot as shown in Figure 2 5 first loosen the nut installed in factory from bottom to top and remove the foot fixing piece reserve it then rotate the foot to raise it for avoiding affecting the slide of the castor he A Nut Foot fixing piece Foot Lower left corner of the cabinet amplified view Figure 2 5 Schematic diagram for raising the foot Initial Inspection Before installing the UPS carry out the following inspections 1 Ensure that the environment of the UPS equipment room meets the environmental requirement specified in the product technical specifications especially the ambient temperature ventilation conditions and the dust situations 2 Unpack the UPS and battery under the guidance of authorized service engineer Visually inspect whether the inside and outside of the UPS and battery have any transportation damage If th
121. rono ncnnnn raro rra rara nr 82 11 5 Electrical Characteristics Intermediate DC Circuit ecceecceeeseseeeeeeeeeeeeeseeeeseaeeseaeeseaeeseaeeseaeeseaeeseeeseeeteaees 82 11 6 Electrical Characteristics Inverter Output coocconcccnnccnnccnnncccnncnnancconnnn nono ncnnnn ran n ronca 82 11 7 Electrical Characteristics Bypass INpUb oonnocnnnnnnniccnnnncnnccnnnccnnnccnoncn co nnn ronca 83 1128 EfficlenGy And LOSS cin ito 83 Appendix 1 Disposal Of Old Appliances ooooocccncccionccnncccnonccnnnccnonnnnan cn ron cannnc cnn carr cnn carr 85 Appendix 2 Gloss Ary iii lia rd 86 1 1 1 2 1 2 1 Chapter 1 Overview 1 Chapter 1 Overview This chapter briefly introduces the features design concept parallel system operation mode battery management and battery protection of the Liebert NXC 30kVA and 40kVA UPS UPS for short Features The UPS is connected between a critical load e g a computer and mains power to provide high quality power for the loads The UPS has the following advantages 6 Increase power quality The UPS protects its output against the input power change through the internal voltage and frequency controller mprove noise rejection Due to the application of AC DC AC conversion mode the noise in the input power is effectively filtered and the load gets clean power supply eProvide mains failure protection If the input power fails the UPS will work in battery mode and the power supply to the loads will n
122. rs between the rectifier input terminals mA mB mC and the bypass terminal terminals are Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 3 Electrical Installation 21 connected correspondingly Connect the input neutral line to the neutral terminal N in the cabinet Ensure correct phase rotation Connection of split bypass 2 Remove the three shorting copper bars between the rectifier input terminals mA mB mC and the bypass terminal terminals bA bB bC Connect the rectifier input cables to the rectifier input terminals mA mB mC in the cabinet and connect the bypass input cables to the bypass input terminals bA bB bC in the cabinet Connect the rectifier input neutral line and bypass neutral line to the neutral terminal N in the cabinet Ensure correct phase rotation Connection of system output 4 Connect the system output cables between the output terminals oA oB oC oN in the cabinet and the load Refer to Table 3 1 for the torque Ensure correct phase rotation AAs If the load will not be ready to accept power supply before arrival of the service engineer ensure that the system output cables are safely isolated at their ends Connection of battery 5 If the external battery is required ensure correct polarity of the connections from the battery string terminals to the BCB and from the BCB to the battery input terminals BAT BAT N BAT in the UPS cabinet that is BAT to
123. ry to minimize the movement distance Ensure that the UPS weight does not exceed the capacity of the lifting equipment For the UPS weight refer to Table 11 3 The UPS cabinet can be moved by forklift or other similar lifting equipment For short distance movement the castors can be used Clearance Because the UPS has no grill at the two sides there is no special clearance requirement on the two sides Besides the local regulations to enable routine tightening of the power terminals within the UPS it is recommended that clearance around the front of the UPS should be sufficient to enable free passage of personnel with the door fully open Meanwhile maintain at the back of the cabinet a clearance at least 500mm to permit adequate circulation of air coming out of the UPS Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 2 Mechanical Installation 13 2 6 3 Cable Access Mode The UPS adopts top cable access method and bottom cable access method For details refer to 3 1 10 Power Cable Connection Steps and 3 2 11 Signal Cable Connection Steps 2 6 4 Final Positioning And Fixing After the final positioning of the UPS use the four adjustable feet to fix the UPS on the floor as shown in Figure 2 6 Method 1 Loosen the nuts from bottom to top 2 Rotate the feet down to touch the floor 3 Plug the foot fixing pieces to the feet 4 Align the foot fixing pieces with the installation holes dug according to
124. s provided that it meets the battery discharge current requirement when the battery discharges to near EOD voltage as shown in Table 3 1 Maximum Steady State AC And DC Currents The power cable must be selected according to the current and voltage values in Table 3 1 as well as the local wiring regulations and take environmental conditions temperature and physical media into consideration then refer to Table 3B in IEC 60950 1 Table 3 1 Max steady state AC and DC currents Rated current A Bus stud bolt nut specification HES Output bypass current Battery disch scharge power 3 12 en a 4 Input battery output Recommended Max input current at full load current N at min kVA bypass cable torque N m 380V 400V 415V battery voltage 30 3 in 3 out 53 45 44 42 96 96 20 M6 M8 M6 M6 4 8 12 4 8 4 8 40 3 in 3 out 68 60 58 56 127 127 25 M6 M8 M6 M6 4 8 12 4 8 4 8 Note When selecting the battery cables a max volt drop of 4Vdc is permissible at the current ratings given in Table 3 1 Do not form coils so as to minimize the formation of EMI 1 Input mains current for rectifier and bypass 2 Non linear load like switch power affects the design of output and bypass neutral line The neutral line current may exceed the rated phase current at most 1 5 times of the rated phase current Liebert NXC 30kVA And 40kVA UPS User Manual 16 3 1 4 3 1 5 3 1 7 Ch
125. s an RCD the transient state and steady state ground leakage current upon the startup of the UPS shall be considered The RCCB shall meet the following requirements Be sensitive to the DC unidirectional pulse class A of the whole distribution network Be insensitive to transient state current pulse Have an average sensitivity which is 0 3A 3A adjustable The RCCB symbols are shown in Figure 3 1 a AKI LD Figure 3 1 RCCB symbols The UPS has an internal EMC filter therefore the protective earth cable has leakage current which is 0 1000mA It is recommended to confirm the RCD sensitivity of the upstream input distribution and the downstream distribution to the load External battery The BCB is useful for protecting the external battery The UPS provides an optional BCB box to provide overcurrent protection short circuit protection and automatic tripping functions for the external battery The rated voltage of the BCB is 500Vdc and its DC breaking current is 20kA This BCB is important for the battery maintenance and is generally installed near the battery System output The UPS output distribution shall be configured with a protective device The protective device shall be different from the input distribution protection switch and able to provide overload protection refer to Table 11 6 and Table 11 7 3 1 10 Power Cable Connection Steps For cable access mode of the UPS refer to 2 6 3 Cable Access Mode Liebert N
126. signal to monitor the UPS The functions of the IS Relay card are listed in Table 8 5 Table 8 5 Function of UPS IS Relay card Pin Function Operation 1 Common Low Battery 2 Low Battery Closed if low battery point occurs 3 Low Battery Closed if battery is OK 4 Common UPS Fault 5 UPS Fault Closed if UPS fault occurs 6 UPS Fault Closed if no UPS failure 7 Common On Battery 8 On Battery Closed if On Battery power Utility failure 9 On Battery Closed if not On Battery power Utility OK 10 Signal Ground Use for UPS Any Mode Shutdown 11 Signal Ground Use for UPS Any Mode Shutdown 12 UPS Any Mode Shutdown Turn UPS output Off when shorted to Pin 10 or 11 13 Summary Alarm Closed if no alarm conditions are present 14 Summary Alarm Closed if Summary Alarm occurs 15 Common Summary Alarm 16 On UPS Closed if On UPS inverter power 17 On Bypass Closed if On Bypass 18 Common On Bypass For more information of the IS Relay card refer to the Liebert IntelliSlot Relay Card User Manual in accessory The installation method of the IS Relay card is the same as that of the IS WEBL card described in 8 2 6 IS WEBL card Refer to 3 2 11 IS 485L Card Signal Cable Connection Steps for the cabling and routing of the signal cables Figure 8 17 shows the appearance of the IS 485L card Liebert NXC 30kVA And 40kVA UPS User Manual 76 Chapter 8 Options IS 485L Figure 8 17 1IS 485L car
127. sine aii patear 47 6 6 Battery Protection iii it e pas 47 6 7 Battery Installation And Gonnection ostias arias 48 6 7 1 Battery Installation ta 48 6 7 2 Battery COMeciiON iuris daa ira are os 48 6 8 Design Of Battery ROOM cutis 50 0 9 BCB Box Optional xs nonsi anna A a So ade vent elvis denne eee ee 51 6 10 BCB Reference Current And Connection cceccecesceeeeeeeeneeseeeseaeeseneeseaeesaeeseaeesaeeseaeesaeeseaeessaeeeneeessaeeeeeeenaas 53 6 11 Battery Maintenance i 2 cH Soa aa a Re A te A a 53 6 12 Disposal Of Used Battery chase AAA AA E eaa 54 Chapter 7 Parallel System And LBS SyStem ecccecceeeeeceneeeeeeeeeeeeeeeceaeeseeeeceaeeeeaeeseaeeseaeeseaeeseaeeseaeeseaeeseaeeeeaeeseeeseaeene 55 TAGE A A 55 7 2 System Installation Procedur s ii las a cay Sean charac eas ee tds 55 Teak Preliminary CHECKS timimi a add sas 55 2 2 2 Gabinet Install ri tn a io a eee eos a 55 7 23 PoWer Gables 56 Tek Parallel Cablen oir al ia evn tah a de 56 7 2 DIREMOS EPO cucuta tata da 57 7 3 Operation Procedures For Parallel SysSteM ooooccnccnniccnnninncccnoncnnnnncnnrccnnnnnnnrn crac nrnn can n cnn carr cnn n carr carnnncnnnr 57 7 3 1 Startup Procedures In Normal Mode oocooocccncccccccccncccnoncnonnccnoncncnncnnnncnnnn cn narrar rara carr rnnnnnr 57 7 3 2 Maintenance Bypass Procedures oococcoconcccnncoccccnnncnnnnon ono cnn recerca 58 7 3 3 Procedures For Isolating One UPS Module From Parallel SySteM ooonnocinnnnnnncninnnnnncccn
128. ssessment and advice by professionals on whether to replace the device are required with reference to the information provided in this section Life Parameters And The Proposed Replacement Time Of Key Components Key components in Table 10 1 are used in the UPS system To prevent system failures due to some of the devices failure by wear it is proposed to carry out regular inspection and replacement during its estimated life Table 10 1 Life parameters and the proposed replacement time of key components Proposed inspection Key components Estimated life Proposed replacement time SE pero H Fan Not less than 7 years Five years to six years One year Air filter One year to three years One year to two years Two months VRLA battery 5 year life Five years Three year to four years Six months VRLA battery 10 year life 10 years Six years to eight years Six months 10 2 2 Replacement Of Air Filter The air filters need regular inspection and replacement The inspection and replacement intervals are related to the environmental conditions of the UPS Under normal environmental conditions the air filters should be cleaned or replaced once every two months and need more frequent cleaning and replacement in dusty or other harsh environments Frequent inspection or replacement should also be made in new buildings The UPS provides air filters on the back of the front doors of the cabinet and the user can replace the air fil
129. stallation 15 3 1 3 1 1 Chapter 3 Electrical Installation This chapter mainly introduces the electrical installation of the UPS including the power cable and signal cable connecting procedures and methods After completing the mechanical installation of the UPS it is required to connect the power cable and signal cable of the UPS All the signal cables whether shielded or not shall be kept away from the power cables AAs 1 Do not power on the UPS before the arrival of authorized service engineer 2 The UPS cables should be routed by an authorized engineer in accordance with the information contained in this chapter Wiring Of Power Cable System Configuration The cable size of the system power cable shall meet the following requirements UPS input cable The cable size of the UPS input cable differs with the UPS power ratings and input AC voltages provided that it meets the requirement of maximum input current including the maximum battery charge current see Table 3 1 UPS bypass and output cable The cable size of the UPS bypass and output cable differs with the UPS power rating and output AC voltages provided that it meets the requirement of nominal output or bypass current as shown in Table 3 1 Battery cable Each UPS connects to its battery through the three cables connecting to the positive pole negative pole and neutral line The cable size of the battery cable differs with the UPS power rating
130. tained by the user A Amor power inputs This UPS system receives power from more than one source Disconnection of all AC source and the DC source is required before servicing This UPS has several circuits that are energized with high AC as well as DC voltages Check for voltage with both AC and DC voltmeters before working within the UPS A J eatery voltage higher than 320Vdc All the battery physical maintenance and servicing procedures need special tools and should be carried out only by trained personnel Take special care when working with the batteries associated with this UPS When the batteries are connected together the battery terminal voltage exceeds 320Vdc and is potentially lethal Battery manufacturers supply details of the necessary precautions to be observed in working on or in the vicinity of battery strings These precautions should be followed implicitly at all times Particular attention should be paid to the recommendations concerning local environmental conditions and the provision of protective clothing first aid and fire fighting facilities AA When the internal fuse of the UPS is damaged it must be replaced with fuse of the same electric parameters by professionals ININ Beside the communication board is a static sensitive area ESD proof action is critical before contacting with this area AA This warning mark represents all the indications for human safety The
131. te maintenance and system testing Liebert NXC 30kVA And 40kVA UPS User Manual 56 Chapter 7 Parallel System And LBS System External Other power supply st Mains input Mains input L1 L2 L3 N L1 L2 L3 N L1 L2 L3 N 2 L1 L2 L3 N Q1EXT j UPS G Output distribution External maintenance bypass To load Figure 7 1 Schematic of typical parallel system with common input separate batteries and output 7 2 3 Power Cable The power cable wiring is similar to that of the UPS module Refer to 3 1 Wiring Of Power Cable The bypass and rectifier input supplies must use the same neutral line input terminal If the input has a current leakage protective device the current leakage protective device must be fitted upstream of the neutral line input terminal A The power cables including the bypass input cables and UPS output cables of each UPS module should be of the same length and specifications to facilitate load sharing 7 2 4 Parallel Cable Shielded and double insulated parallel cables available in lengths 5m 10m and 15m must be interconnected in a ring configuration between the UPS modules as shown in Figure 7 2 Method connect a module parallel cable from its PARA1 port to the PARA2 port of another module Follow this method to connect other parallel cables The ring connection ensures the reliability of the control of the parallel system Be sure to verify the reliable cable
132. ted by turning the switch to OFF AA If the UPS system is composed of two or more parallel UPS modules and the load capacity exceeds the single module capacity do not use the internal maintenance bypass switch 1 2 4 UPS Power Supply Switch Configuration Figure 1 2 describes the block diagram of the UPS module The UPS has split bypass configuration that is the bypass adopts independent mains input and common input configuration In split bypass configuration the static bypass and maintenance bypass share the same independent bypass power supply Where a separate power source is not available the input supply connections of the bypass input switch Q2 and rectifier input switch Q1 would be linked together linked before delivery to make the bypass input and rectifier input use mains power of the same route During the normal operation of the UPS except for the maintenance bypass switch Q3 other switches shall be closed Liebert NXC 30kVA And 40kVA UPS User Manual 4 Chapter 1 Overview UPS E Static switch Shorting copper Bypass input switch Q2 ESA bar of common input configuratio Rectifier a Inverter Inverter switch UPS output A 7 Moni 7 Mains input Rectifier input ms Output switch Q5 switch Q1 E Neutral line E Za Charger E Ter Neutral line oe UU anne switch Q6 Suput ie 4 Neutral line input hh Ns Battery BCB
133. ter during the UPS operation Each air filter is fixed by a fixing bar on both sides Refer to Figure 10 1 the following is the air filter replacement procedures 1 Open the front door of the UPS to reveal the air filter on the back of the front door 2 Remove a fixing bar on one side and loosen the fixing screws of the fixing bar on the other side with no need to remove this fixing bar 3 Remove the air filter to be replaced and insert a clean one 4 Re install the removed fixing bar in the original place and tighten the fixing screws Liebert NXC 30kVA And 40kVA UPS User Manual 80 Chapter 10 Service And Maintenance 5 Tighten the fixing screws of the fixing bar on the other side
134. the F5 enter key to confirm it 3 Wait until the battery test completes After the test the system will automatically update the battery data which used to calculate the backup time displayed upon mains failure and battery actual capacity battery capacity percentage when compared to a new battery displayed in inverter mode 4 Stop the battery test If required the test may be stopped before completion by selecting Stop testing on the Command menu Refer to Chapter 4 Operator Control And Display Panel for more information Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 5 UPS Operation Introduction 41 5 5 UPS Self test Procedures 5 6 5 6 1 During the self test the UPS can check the UPS control functions LED indicators and audible alarm states This self test is password controlled and menu driven It can be carried out from the UPS operator control and display panel by the operator and takes five minutes Procedures for UPS self test 1 Select the Command menu on the LCD screen Use the F3 left key or F4 right key to display the Command menu Press the F5 enter key to confirm it 2 Select the desired test Use the F3 up key or F4 down key to highlight the desired test item Press the F5 enter key to confirm it After the prompt use the F3 up and F4 right keys to input the password and then press the F5 enter key to confirm it 3 Wait until the test completes After five seconds a pop wi
135. the UPS complete discharging 2 Remove the left side panel of the UPS cabinet reserve the removed screws 3 Install the three bypass load sharing inductors see Figure 8 2 Cable connection terminal a ni M5 12 sems screw Base plate Inductor 1 Inductor 3 ene Inductor 2 Figure 8 2 Position of bypass load sharing inductors There are 12 installation holes on the base plate of the UPS cabinet for fixing the three inductors four installation holes for each inductor Place the three inductors in the installation positions shown in Figure 8 2 and fix them on the base plate of the UPS cabinet with 12 M5 x 12 sems screws 4 Connection of bypass load sharing inductors If the UPS cabinet has been connected three bypass cables W26 W27 W28 you should first remove the three cables and follow the procedures below to connect bypass load sharing inductor cables 1 First respectively connect one end of W62 and W59 to terminal1 and terminal 2 of inductor 1 and use the M6 x 16 sems screws M6 flat washers and nuts to fasten the terminals The torque value is 4 8N m Then respectively connect the other end of W62 and W59 to the transfer terminal bC in UPS cabinet and the corresponding cabling hole Q2 6 of bypass input switch Q2 See Figure 8 3 for details Liebert NXC 30kVA And 40kVA UPS User Manual 66 Chapter 8 Options
136. the operation of rectifier inverter static switch and battery 2 If the UPS has internal battery use the special tool to open the battery compartment then pull the three terminals BAT BAT and BAT N see Figure 5 3 for details If the UPS has external battery disconnect the corresponding switch of the external battery All UPS modules should be disconnected from the batteries 3 Disconnect the rectifier input switch Q1 and bypass input switch Q2 of each UPS At the moment all the internal power supply is closed and the LCD does not display any more 4 Disconnect the output switch Q5 of each UPS AAs 1 Post a label at the AC input distribution generally far away from the UPS to alert that the UPS maintenance is being operated 2 Wait 10 minutes for the internal DC bus capacitance discharging Then the UPS is completely shut down A 1 After the UPS shutdown the load is transferred to maintenance bypass If required operate the maintenance bypass switch at any time 2 Only qualified personnel shall finish the UPS installation This procedure can be executed after the system runs normally A ems hazardous battery voltage The battery terminals still have hazardous voltage after the UPS complete shutdown 7 3 6 Procedures For Complete UPS Shutdown While Maintaining Power To Load The following procedures are applicable for completely powering down the UPS and still keeping the power su
137. tion When the ambient temperature is increased the DC bus voltage which charges the battery will be reduced correspondingly to provide optimal charging voltage for the battery thus prolonging the battery service life time This function must be used together with the Emerson battery temperature detection device a standard option Battery Protection The following battery protection functions are set by the service engineer through the Emerson setting software Battery low pre warning The battery low pre warning occurs before the EOD After this pre warning the battery should have the capacity for three remaining minutes discharging with full load The time can be configured from 3min to 60min EOD protection When the battery voltage drops to the EOD voltage the battery converter shuts down automatically The EOD voltage is adjustable from 1 6V cell to 1 9V cell VRLA BCB alarm The BCB alarm occurs when the external BCB opens if you select the Emerson BCB optional The external battery connects to the UPS through the BCB The BCB is manually closed and tripped by the UPS control circuit Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 2 Mechanical Installation 9 Chapter 2 Mechanical Installation This chapter briefly introduces the mechanical installation of the UPS including the precautions initial inspection before installation environmental requirement mechanical requirement and installation diagram 2 1 Pre
138. tor 1 for the detailed connection method of inductor 3 5 Replace the left side panel and close the front door of the UPS Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 8 Options 67 A Ensure that there are no foreign matters inside the UPS cabinet before closing the door Now the installation and connection of the bypass load sharing inductors are complete Maintenance 1 Keep the connections tight Tighten all connections in installation and periodically check them 2 Keep the inductors clean Maintain the inductors free of dust and moisture 3 Keep good records Inform the service engineer for on site maintenance in time 8 2 2 Internal Battery Kit Emerson provides two kind of internal battery kits for the user when UPS internal battery or corresponding kits is required Kit A 32 block internal battery kit factory installation or select the battery cable battery tray and battery fuse site installation Kit B 38 block internal battery kit factory installation or select the battery cable battery tray and battery fuse site installation Preparation 1 Prepare the installation tools including a cross head screwdriver a pair of insulated gloves a sleeve and an adjustable spanner 2 Check that all installation materials are present and complete including internal battery four battery trays and corresponding battery power cables kit A or five battery trays and corresponding battery power cables kit
139. transistor Load bus synchronizer Liquid crystal display Light emitting diode Personal computer Protective earth Residual current circuit breaker Residual current detector Silicon controlled rectifier Simple network monitoring protocol Static transfer switch Space vector pulse width modulation Uninterruptible power system Valve regulated lead acid Liebert NXC 30kVA And 40kVA UPS User Manual
140. tup is finished 3 Press the ON key for two seconds The inverter starts up and the inverter indicator green is flashing After the inverter runs normally the inverter indicator green is on At this time the UPS is powered by the inverter BA ey ey p EE ol OMS CEN I It A EJ JC C_I a PE NO l 00 L 7 Battery cold start button O Figure 5 2 Battery cold start button Liebert NXC 30kVA And 40kVA UPS User Manual 38 5 3 5 3 1 5 3 2 5 3 3 5 3 4 Chapter 5 UPS Operation Introduction Procedures For Transfer Between Operation Modes Transfer From Normal Mode To Battery Mode Open the external power switch to isolate the mains power and initiate the UPS on battery mode To transfer the UPS back to normal mode wait for several seconds and then close the external power switch to re connect the mains power to the UPS 10 seconds later the rectifier restarts automatically to feed p
141. uctors with no extra clearance occupied The load sharing rate is generally 10 of the system rated current with the difference of external cable configuration Try to make the cable length be the same from bypass to each UPS and from UPS module output to parallel system connection point Figure 8 1 Operation principle of bypass load sharing inductor Preparation 1 Prepare the installation tools including a cross head screwdriver a pair of diagonal cutting pliers a sleeve and an adjustable spanner Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 8 Options 65 2 Check that all installation materials are present and complete including three bypass load sharing inductors 12 M5 x 12 sems screws for fixing the inductors six M6 x 16 sems screws for fixing the power cables six M6 flat washers and nuts AA 1 Only authorized personnel shall install and replace the inductors 2 Connect the cables strictly following the instructions Failure to observe this may cause damage to the UPS and the inductors Avs 1 Close the load 2 Refer to 5 6 1 Procedures For Completely Powering Down UPS for UPS module shutdown and 7 3 5 Procedures For Completely Powering Down UPS for parallel system shutdown Procedures 1 Shut down the UPS completely This procedure will cause the load power off 3 All the LCDS are off wait five minutes for the internal DC bus capacitors of
142. uires inter module control signals to manage the load sharing synchronizing and bypass switching The control signals are connected through the parallel cables which are multi way ribbon cables connected between the units of the system to form a ring When two or more modules are to be connected in parallel it is recommended that inductor should be inserted in the static bypass line This can be installed internal to the UPS as an option System Installation Procedures The basic installation procedure of a parallel system comprising two or more UPS modules is the same as that of single module system This section only introduces the installation procedures specific to the parallel system The installation of a parallel UPS should follow the installation procedure for a single UPS module with the additional requirements detailed in this section Preliminary Checks Be sure that the options of the parallel cables are correct and that the modules are of the same rating model and with the same software and hardware release AA To achieve coordinated operation of the modules in the parallel system it is required to configure each module separately using Emerson setting software This must be done by Emerson service personnel Cabinet Installation Place the UPS modules side by side and interconnect as shown in Figure 7 1 The output distribution mode Q1EXT Q2EXT must be configured shown in Figure 7 1 is recommended to facilita
143. ults 2 Close the total bypass input switches 3 Close the bypass input switch Q2 rectifier input switch Q1 output switch Q5 and all external output isolating switches if any of each UPS in turn At the moment the system is power on and the startup screen pops up Refer to 4 2 1 Start Screen About 25 seconds later confirm that the LCD shows the rectifier power supply and the bypass power supply are normal if not check whether the switches Q1 and Q2 are closed and the parallel cables of each UPS are connected reliably Then the rectifier starts up and the alarm indicator red is on at the same time the bypass static switch is closed About 30 seconds later the alarm indicator red is flashing then the rectifier startup is finished After all the rectifiers startup of the UPSs is finished the alarm indicators red are flashing 4 For each UPS press the ON key for two seconds The inverter starts up and the inverter indicator green of each UPS is flashing After all the UPS inverter indicators turn solid green the whole UPS system will power the load AAs If the UPS system is composed of more than 2 parallel UPS modules and the load capacity exceeds the single module capacity do not use the internal maintenance bypass switch 7 3 2 Maintenance Bypass Procedures This operation will make the load transfer from UPS power supply protection state to direct connection with AC input bypass state
144. ut battery fully charged full rated linear load Liebert NXC 30kVA And 40kVA UPS User Manual Appendix 1 Disposal Of Old Appliances 85 Appendix 1 Disposal Of Old Appliances NOTICE TO EUROPEAN UNION CUSTOMERS DISPOSAL OF OLD APPLIANCES This product has been supplied from an environmentally responsible manufacturer that complies with the Waste Electrical and Electronic Equipment WEEE Directive 2002 96 CE The crossed out wheelie bin symbol on the right is placed on this product to encourage you to recycle wherever possible Please be environmentally responsible and recycle this product at your local 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 Liebert NXC 30kVA And 40kVA UPS User Manual 86 Appendix 2 Glossary AC BCB CSA DC EIB EMC EMI EOD EPO 1 0 IGBT LBS LCD LED PC PE RCCB RCD SCR SNMP STS SVPWM UPS VRLA Appendix 2 Glossary Alternating current Battery circuit breaker Cross sectional area Direct current External interface board Electromagnetic compatibility Electromagnetic interference End of discharge Emergency power off Input output Integrated gate bipolar
145. verse Reconnect battery and check battery wiring Battery period testing The battery is under automatic periodic battery maintenance test 20 capacity discharge Batt capacity testing The user initiated a battery capacity test 100 capacity discharge Battery maintenance testing Battery end of discharge Battery overtemp Replace battery Battery low pre warning The user initiated a maintenance test 20 capacity discharge Inverter turned off due to battery EOD The battery temperature is over limit Battery life is finished Before the EOD battery low pre warning will occur After this pre warning the battery will have the capacity for 3min discharging with full load The time is user settable from 3min to 6min Generator in Dry contact signal indicating generator connected BCB status abnormal Logic conflict between BCB drive signal and feedback signal BCB closed BCB state closed BCB open BCB state open Note 1 For UPS installed with the optional battery monitor refer to the user manual of the battery monitor for the alarm messages related to battery cell and charge current 2 If the alarm is caused through setting the software value by Emerson authorized engineer and you wish to change the setting values please contact the Emerson local customer service center Liebert NXC 30kVA And 40kVA UPS User Manual 5 1 5 1 1 5 1 2 Chapter 5 UPS Operation Introducti
146. vice personnel in UPS commissioning and service Note To make the communication normal do not connect the RS232 port and USB port to the computer at the same time Parallel And LBS Communication Ports See Figure 3 5 for their positions RS485 Communication Port See Figure 3 5 for its position Liebert NXC 30kVA And 40kVA UPS User Manual Chapter 3 Electrical Installation 25 3 2 10 Intellislot Port The Intellislot ports are used for installing optional cards on the site including IS Relay card IS 485L card IS WEBL card Table 3 9 provides the models and installation positions of the optional cards For the detailed installation of the optional cards refer to the corresponding contents in Chapter 8 Options Table 3 9 Models and installation positions of optional cards Optional card Installation position IS Relay card Intellislot ports 1 and 3 Intellislot port 1 recommended IS 485L card Intellislot ports 1 and 3 Intellislot port 3 recommended IS WEBL card Intellislot ports 1 3 Intellislot port 2 recommended A The Intellislot 1 port shares communication resource with other communication ports To avoid conflict when using other communication ports in service and commissioning it is not recommended to use the Intellislot port 1 3 2 11 Signal Cable Connection Steps A Respectively route the power cables and signal cables The shielding coat of signal cable must be reliably eart
147. vided by Emerson Network Power Co Ltd This card supports SNMP protocol The IS WEBL card is a network management card It can make the UPS made by Emerson Network Power Co Ltd real network equipment It can also be connected to the IRM series sensor to provide environment monitoring function When the intelligent equipment generates an alarm the IS WEBL card can notify the user by recording the log sending trap information and sending a mail The IS WEBL card provides three approaches for you to monitor your intelligent equipment and equipment room environment Web browser You can use Web browser to monitor your intelligent equipment and equipment room environment through the Web server function provided by the IS WEBL card Network management system NMS You can use NMS to monitor your intelligent equipment and equipment room environment through the SNMP function provided by the IS WEBL card SiteMonitor a network management software for equipment room power and environment You can use SiteMonitor to monitor your intelligent equipment and equipment room environment through the TCP IP interface provided by the IS WEBL card The IS WEBL card can also work with the Network Shutdown computer safe shutdown program developed by Emerson Network Power Co Ltd to provide automatic safe shutdown function for your computer installed with Network Shutdown so as to prevent data loss The IS WEBL card should be installed in the Intellislot port see Figur
148. y external distribution switch or three terminals BAT BAT and BAT N see Figure 5 3 for details Then close the rectifier input switch Q1 and neutral line switch Q6 At the moment the system is power on and the startup screen pops up Refer to Refer to 4 2 1 Start Screen 2 Close the bypass input switch Q2 At this moment confirm that the LCD shows the bypass input supply is normal if not check whether the switch Q2 is closed Then the rectifier starts up and the alarm indicator turns solid red About 30 seconds later the alarm indicator red is flashing if the UPS has internal or external battery not connected or off if the UPS has internal or external battery connected 3 Close the output switch Q5 and press the ON key for two seconds The inverter starts up and the inverter indicator green is flashing After the inverter runs normally the inverter indicator turns solid green and the inverter supplies power to the UPS At this point the UPS will join the operation of the parallel system and supply power to the load 7 3 5 Procedures For Completely Powering Down UPS Complete UPS shutdown and load power off should follow this procedure All power switches isolating switches and breakers are disconnected and then UPS no longer supplies power to the load ZN cion The following procedures will cut off the load power making the load completely power off 1 Pressing the EPO button of each UPS stops
149. zech and Turkish Use the following procedures to select the language 1 On the OutPut menu screen press the F3 left or F4 right key to select the Language menu 2 Press the F5 enter key to move the cursor to the data window of the screen 3 Press the F3 up or F4 down key to select the desired language 4 Press the F5 enter key to confirm 5 Press the F2 ESC key repeatedly to return to the OutPut menu At this point the LCD displays all characters in the selected language Changing Current Date And Time Use the following procedures to change the system date and time 1 On the OutPut menu screen press the F3 left or F4 right key to select the Settings menu 2 Press the F5 enter key to move the cursor to the data window of the screen 3 Press the F3 up or F4 down key to select the Date amp time item and then press the F5 enter key to confirm 4 Press the F3 up or F4 down key to the row displaying the date and time and press the F5 enter key to confirm 5 Use the F3 up or F4 down key to input the current date and time 6 Press the F5 enter key to confirm and press the F2 ESC key to return to the OutPut menu Control Password The system provides password protection for UPS operation and control The default password is 12345 Only enters the correct password can you execute the UPS self test and battery test operation To change password carry out the following

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