Gebruiksaanwijzing /service van het product UPS System van de fabrikant Liebert
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Liebert iTRUST UPS System User Manual E1-20020516-C-1.0 Liebert Cor poration.
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Contents Chapter 1 Introduction ........................................ .................................................. .............. .............1 1.1 Basics .......................................... ...........................................
5.1.4 Alarm Buzzer................... .................................................. ..................................... 4 6 5.1.5 LCD and Menu Keys ......................................................... ..................................... 4 6 5.
Chapter 8 Parall el System ..... ................................................. ............................................... ........87 8.1 System Introduction . .................................................. ................................
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Chapter 1 Intr oduction 1 Chapter 1 Introduction 1.1 Basics The Liebert iT rust U PS System is connected between the util ity source and the critical load t o provide uninter ruptible pow er to the load. The power fro m the UPS being free of volt age and freq uency variati on and disturban ces from utility .
Chapter 1 Introduc tion 2 1.3 Operation Theory The UPS circuit diagr am is shown in Figure 1-2. V N U TR2 BN N2 A2 W BP C1 B1 C1 B1 A1 DZN6 Q5 AC3 FU4 KM1 FU6 Res2 TR1 L1 AC2 Q2 + DC1 KA1 FU2 Res1 Q1 .
Chapter 1 Intr oduction 3 The double DSP and MCU form the full digi tal control sy stem to realiz e the powerful function of the UPS. The swi tching between th e operation mo des is realized by controllin g the byp ass st atic switc h and the inverte r st atic switch.
Chapter 1 Introduc tion 4 Front view 1:Fan 2:rectifier 3: softst art relays 4:contactor 5: two auxilia ry power supp ly boards UL W2L61M5 6: D level lightn ing protection devi ce SPD12Z 7: Hall curr e.
Chapter 1 Intr oduction 5 - ~ ~ - Mains output Bypass Figure 1- 5 Norma l mode 2. Battery Mode When the utility fails, the UPS sy stem will switch to battery mode w ithout interruption and the batter y will power t he load thro ugh the inverter .
Chapter 1 Introduc tion 6 4. ECO Mode If the load has n o requirement for power quality but has a hi gh requirement for efficiency , th en the UPS c an be set in ECO mode . In this mode, the system wi ll power the load thro ugh the stati c bypass switch and the rectifier will charge the batteries.
Chapter 1 Intr oduction 7 6. United Power Mode When the utility is not avail able and the ca pacity of the gen erator set is inadequate to support the load, the batt ery will power t he load toget her with the gener ator automatically .
Chapter 1 Introduc tion 8 ~ Mains - -~ output Bypass Fig 1-12 1.6 Basic Functions Battery Management F unction - Th e UPS has ad vanced battery manage ment functions incl uding battery faul t detection and backup time for ecast. Soft S tart F unction - Complete delay soft st art function can reduce th e surge to th e UPS unit and utility source.
Chapter 1 Intr oduction 9 Parameters of Liebert iT rust UPS are given in T abl e1-1 Capacity 20kVA 30kVA 40kVA 60kVA Model UL33-02 00L UL33-0300L UL33-0400L UL33-0600L Input Volt age 380/400/ 415V(lin e-to-line vo ltage) AC Power I nput Three-phase t hree-wire Power Factor >0.
Chapter 1 Introduc tion 10 Capacity 20kVA 30kVA 40kVA 60kVA Model UL33-0200L UL33-0300L UL33-0400L UL33- 0600L Overload capa bility(inverter) 105% < load 125% , transfer to by pass mode aft er 10 ± 0.
Chapter 1 Intr oduction 11 Capacity 20kVA 30kVA 40kVA 60kVA Model UL33-02 00L UL33-0300L UL33-0400L UL33-0600L Insulation Resist ance >2M(500VDC) Dielectric S trength (input to eart h, output to eart h)2820Vdc, l eakage curre nt lower than 3.
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Chapter 2 Cabinet Install ation 13 Chapter 2 Cabinet Installation 2.1 Environmental Conditions Operating T emperature : 0 ~ 40 ° C S torage T emperature: -40 ~ 70 ° C(with no battery) -20 ~ .
Chapter 2 Cabine t Installation 14 Figure 2-1 4 fixin g holes 4 screws for levelling feet Figure 2-2 External Dimensi ons of 40/60kV A UPS are shown in Fig.
Chapter 2 Cabinet Install ation 15 Figure 2-3 40/60kV A UPS Outline Dim ension 4 fi xin g holes 4 s cre w s fo r le ve lling fe et Figure 2-4 40/60kV A UPS Fix ing Holes.
Chapter 2 Cabine t Installation 16 2.4 Transportation 1. Hoisting the UPS Prepare fo ur cables of length 1.5 m and the weight beari ng cap acity of each cable of 1.5 tons. The UPS has four liftin g rings and shoul d be inst alled at the t op of the UPS 2.
Chapter 2 Cabinet Install ation 17 2. Fixed pos ition without a base In earthquake prone areas, pla ce UPS on a conduit as shown in Figure 2-6. 1. At the edge of the conduit, drill hol es for fixing exp ansion bolt s 2. Hoist the cabinet a t least 250 mm to remo ve the four leveling bolts.
Chapter 2 Cabine t Installation 18 Figure 2-7 Inst all the UPS on a support ra ck 1. Finishe d state 2. Concrete floor 3. Nut 4. Spring washer 5. Flat washer 6. Suppor ting f rame 2.6 Cable Access The UPS has variou s methods of c able access. One is bottom access w here the cables are r outed in conduit fro m the bott om of the UP S.
Chapter 2 Cabinet Install ation 19 Input cable Battery cable Output ca ble Signal cable Fig. 2- 9 UPS top cable output 2.7 Ventilati on The cooling air comes int o the UPS from the bot tom and the fan circulate s the cool air inside th e UPS. T he air i s expelled out of the UPS fro m the back.
Chapter 2 Cabine t Installation 20 2.8 Layout of Cabinet Besides the UPS cabin et, there are a lso battery cabinet s, input/outp ut distribution cabinet and cabinet f or bypass transformer . All these cabi nets should be laid out correctly . The lay out of battery cabi net and UPS cabinet i s shown bel ow .
Chapter 2 Cabinet Install ation 21 Battery cabinet 1 Battery cabinet 2 UPS cabin et Fig. 2-12 Lay out 2.
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Chapter 3 Ele ctrical Assembly 23 Chapter 3 Electrical Assembly This chapter intr oduces the co nnection meth ods of the power a nd signal c ables. 3.1 Selection of cables 3.1.1 Current carrying capacity of cables The current carrying cap acity c an be selected accor ding to th e volta ge drop an d permissible temperature i ncrease.
Chapter 3 Ele ctrical Assemble 24 protective eart h cable and lightning protecti on earth cable, should be 0. 5 times of phase cable. The relationship betwee n the current and cross-sectional area is shown in T able 3- 2.
Chapter 3 Ele ctrical Assembly 25 Battery cables UPS input input N UPS output output N Fig. 3-1 20 /30kV A UPS bottom cable outp ut Battery cables Rectifier input By pass input Bypass N UPS output Output N Fig. 3-2 40 /60kV A UPS cable co nnection at bottom 2.
Chapter 3 Ele ctrical Assemble 26 3. Cable connection Note All the switches should be switched of f during ca ble connecti on. 1. Feed ca bles Feed cables accordi ng to the cable e ntry mode, with ref erence to Figur es 2-7, 2-8, 3-1, 3-2 2. Assembling cable lugs to cables First strip t he insulati on layer 20 mm from the end.
Chapter 3 Ele ctrical Assembly 27 Input power cable Parallel power cable Wire terminal Fig. 3-3 Pow er cable con nection of One branch uti lity sour ce 5.
Chapter 3 Ele ctrical Assemble 28 4. Earthing Method The UPS rectifier s ource has no neutr al cable. Th e bypa ss and outpu t source hav e neutral cables and the in put and output neutral cabl es are short circuit ed. The lightning prote ction earth PE and the protection eart h of the cabinet are connected as shown in Figure 3-5.
Chapter 3 Ele ctrical Assembly 29 Fig. 3 -6 Layout of s ignal cables of 20/30/40 /60kV A UPS 2. Connection method 1.Parallel conn ection method Open the door of th e UPS to see a circuit board UL W2L61M3. On the b oard, 15- pin connectors P1 and P2 are used to connect the p arallel logic cables.
Chapter 3 Ele ctrical Assemble 30 2.Connectio n of serial connection cabl es The monitoring board UL W2L61U2 is shown in Figure 3-8, where the locat ions of RS232, RS485 and in put and output co ntact s are marked. The user can connect the cables with referen ce to this board.
Chapter 3 Ele ctrical Assembly 31 2) Connection of modem MODEM or SNMP SNMP cables Monitoring board Monitoring board SNMP cabl es MODEM or SNMP 20/30kVA F ront vie w when Front door is open ed 40/60kVA Fro nt view when right door is opened Fig. 3-10 Instal lation of M ODEM or SNM P 1.
Chapter 3 Ele ctrical Assemble 32 3 ） Connection of SNM P C ard Installation of SNMP card Unpack the SNMP card and place it i n the iron case s hown in Figure 3- 10 Connect the cabl es On the monitoring board, there i s a jack J22 wi th a cable to pl ug in directly to the SNMP card, after the SNMP Card is installed.
Chapter 3 Ele ctrical Assembly 33 Tabl e 3-4 D efi niti ons of input /out put c ontac ts Connector Name of cont acts Board name input/output Norma lly close d contac ts for battery low alar m BLV-C ou.
Chapter 3 Ele ctrical Assemble 34 Connector Name of contacts Board name input/output Central co ntacts for over load OVR-S o utput Normally open co ntacts for overload OVR-O output Normally clos ed co.
Chapter 3 Ele ctrical Assembly 35 4. Battery Temper ature detection cab le When the user select t he temperature compensation t echnology , he should sele ct the TMP12Z sensor th at is install ed inside the batt ery cabinet or ba ttery room. Use a cable to send a tempe rature sign al to J15 on the m onitoring boar d.
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Chapter 4 Commis sioning of UPS 37 Chapter 4 Commissioning of UPS 4.1 Startup Procedure 4.1.1 Explanation of Circuit Breakers From the layou t of Figure 1- 3 and Figure 1- 4, the st artup of UPS has c.
Chapter 4 Commission ing of UPS 38 S tep 5 : Aft er the UPS tran sfers from byp ass to in verter , the byp ass indicator turns off, an d the inverter and the load in dicator turns on. The transfer may fai l if the phase rot ation of byp ass and inverter outp ut are dif ferent.
Chapter 4 Commis sioning of UPS 39 2001-1 1-08 UL33-0400L 12:50:30 Inv. On Units 2/4 ID: 1 Input Brea ker Closed 11 £ - 08 12: 09 UPS in Battery Mode Battery low 11 £ - 08 12:09 11 £ - 08 12:28 11 £ - 08 12:28 11 £ - 08 12:50 Records Out System Local Settings Byp.
Chapter 4 Commission ing of UPS 40 2001- 1 1-08 UL33-0400L 12:50:30 Inv. On Units 2/4 ID: 1 Input Breaker Closed 11 £ - 08 12 :09 UPS in Batter y Mo de Battery low 11 £ - 08 12:09 11 £ - 08 12:28 11 £ - 08 12:28 11 £ - 08 12:50 Records Out System Local Settings Byp.
Chapter 4 Commis sioning of UPS 41 4.3.1 Check the function of the display panel Press the button “i nverter shutd own” for 2 se conds and check t hat the inverter stop s. 2001-1 1-08 UL33-040 0L 12:50:3 0 Äæ ±ä ¿ª Æô ² ¢ »ú ̨ Êý 2/4 Ïà µç ѹ V µç Á ÷ A Ƶ Â Ê Hz A(B) B(C) C(A) 221 11 .
Chapter 4 Commissio ning of UPS 42 1. Switch from normal m ode to battery mode. Sw itch of f Q1 to enter batt ery mode and after a few seconds, switch on Q1 again t o return t o normal mode 2. Press “inverter shu tdown” button to swit ch to byp ass mode.
Chapter 5 Operation of Display Panel 43 Chapter 5 Operation of Display Panel 5.1 Display panel 5.1.1 Layout of Display Panel The display p anel of the UPS is show n in Figure 5 -1.
Chapter 5 Operatio n of Displa y Panel 44 2001-1 1-08 UL33-040 0L 12:50:3 0 Äæ ±ä ¿ª Æô ² ¢ »ú ̨ Êý 2/4 Ïà µç ѹ V µç Á ÷ A Ƶ Â Ê Hz A(B) B(C) C(A) 221 11 .
Chapter 5 Operation of Display Panel 45 Flashing Green – End of batt ery discharge Red – Battery Abnormal (overtemp, low battery , contactor fused ) Off – Bat tery Normal bu t not in operation I.
Chapter 5 Operatio n of Displa y Panel 46 5.1. 4 Ala rm B uzze r If there is no alarm sound , it means that eit her the alarm is muted or the system is not in a fault conditio n There are three types of sound from the bu zzer 1.Single cl ick - T he sound can be heard when any button is pr essed 2.
Chapter 5 Operation of Display Panel 47 2001-1 1-08 UL33-040 0L 12:30:20 Inv . O n U nits: ID 1 Vphase Iphase A Freq.Hz A(B) B(C) C(A) 221 11 . 8 12. 3 12. 5 50.2 50.1 50. 1 0.99 0.99 0.99 Input Breaker Close 11 £ - 08 12:09 Out pu t Br e ake r Open UP S in N orm al Mod e Batt.
Chapter 5 Operatio n of Displa y Panel 48 5.2 The displayed information 5.2.1 Opening display At power up of th e UPS, the op ening display i s shown in Fi gure 5-5. Fig. 5-5 Op ening Displ ay 5.2. 2 Main M enu Dis pla y After the UPS is pow er up and self test is completed, th e main menu will be displayed, as shown in Figure 5-6 .
Chapter 5 Operation of Display Panel 49 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *---------------- --------------------- ------------------- ----------* *---------------- Emerson Networ k Power--------------- --* *---------------- --------------------- ------------------- ----------* * UPS versi on£ º 1.
Chapter 5 Operatio n of Displa y Panel 50 2001-1 1-08 UL33-0400L 12:30: 20 Inv. On Units: ID 1 Vphase Ipha se A Freq.Hz A(B) B(C) C(A) 221 11 . 8 12.3 12.5 50.2 50.1 50 .1 0.99 0.99 0. 99 Input Brea ker Clos e 11 £ - 08 12:09 Output Breake r Open UPS in Normal Mode Batt.
Chapter 5 Operation of Display Panel 51 AC Output - di splays three phase line-neutral vol tage, li ne current, fr equency , power factor and line-line voltage , as shown in Fig ure 5-1 1 2001-1 1-08 UL33-0400L 12:3 0:20 Inv. On Units: ID 1 Vphase Iphase A Freq.
Chapter 5 Operatio n of Displa y Panel 52 2001-1 1-08 UL33-0400L 12: 30:20 Inv. On Units: ID 1 Batt. Volt V 423 Batt. Curr. A 4.56 Batt. T emp . C 23.2 Batt. Boost Chargin g Input Breaker Close 11 £ - 08 12:09 Output B reaker Op en UPS in N ormal Mode Batt.
Chapter 5 Operation of Display Panel 53 2001-1 1-08 UL33-0400L 12:30:20 Inv. On Units: ID 1 Batt. Volt V 423 Batt. C urr. A 4 .56 Batt. T emp. C 23.2 Backup Time Sec 176 Input Breaker Close 11 £ - 08 12:09 Mains Volt. Abnormal UPS in Battery Mode 11 £ - 08 12:09 11 £ - 08 12:25 Mains Bypass Output Local System Battery Byp.
Chapter 5 Operatio n of Displa y Panel 54 5.3 Function Setup In the Menu Display Window select “ Function Setup”, pressi ng F1 key to switch the present window to Measu ring and Setup Window and modify each settable items. Pressing F3 key can scroll through al l the sett able items ( total number of the settabl e items is 12).
Chapter 5 Operation of Display Panel 55 5.3.2 Address setup According to the infor mation displayed on F ig.5-22, sele ct the “Equipment Ad dress Setup” and pressing F3(U P) or F2(DOWN) to modify the address of th e equipm ent, and then pressi ng F4 to confirm and e xit.
Chapter 5 Operatio n of Displa y Panel 56 2001-1 1-08 UL33-0400L 12:50:30 Inv. On Units 2/4 ID: 1 Input Bre aker Close d 11 £ - 08 12:09 UPS in Battery Mode Battery low 11 £ - 08 12:09 11 £ - 08 12:28 11 £ - 08 12:28 11 £ - 08 12:50 Records Out System Local Settings Byp.
Chapter 5 Operation of Display Panel 57 After escaping th e modification st ate, the date displayed by the UPS basic information window has b ecome a new dat e. Then use F2 (move lef t) and F3 (move right) keys to mov e the cursor to the locatio n of “second”, as shown i n Fig.
Chapter 5 Operatio n of Displa y Panel 58 2001-1 1-08 UL33-0400L 12:50:30 Inv. On Units 2/4 ID: 1 Input Bre aker Closed 11£ - 08 12:09 UPS in Battery Mode Battery low 11 £ - 08 12:09 11 £ - 08 12:28 11 £ - 08 12:28 11 £ - 08 12:50 Records Out System Local Settings Byp.
Chapter 5 Operation of Display Panel 59 2001-1 1-08 UL33- 0400L 12:50:30 Inv. On Units 2/4 ID: 1 Input Breaker Closed 11 £ - 08 12:09 UPS in Battery Mode Battery low 11 £ - 08 12:09 11 £ - 08 12:28 11 £ - 08 12:28 11 £ - 08 12:50 Records Out System Local Settings Byp.
Chapter 5 Operatio n of Displa y Panel 60 2001-1 1-08 UL33-0400L 12:50:30 Inv. On Units 2/4 ID: 1 Input Bre aker Closed 11£ - 08 12:09 UPS in Battery Mode Battery low 11 £ - 08 12:09 11 £ - 08 12:28 11 £ - 08 12:28 11 £ - 08 12:50 Records Out System Local Settings Byp.
Chapter 5 Operation of Display Panel 61 2001-1 1-08 UL33-040 0L 12:50:30 Inv. On Units 2/4 ID: 1 Input Breaker Closed 11£ - 08 12:09 UPS in Battery Mode Battery low 11 £ - 08 12:09 11 £ - 08 12:28 11 £ - 08 12:28 11 £ - 08 12:50 Records Out System Local Settings Byp.
Chapter 5 Operatio n of Displa y Panel 62 2001-1 1-08 UL33-0400L 12:50:30 Inv. On U nits 2/4 ID: 1 Input Breaker Closed 11 £ - 08 12:09 UPS in Batter y Mode Battery low 11 £ - 08 12:09 11 £ - 08 12:28 11 £ - 08 12:28 11 £ - 08 12:50 Records Out System Local Settings Byp.
Chapter 5 Operation of Display Panel 63 Move the cursor t o the correspondin g bit to modify th e number and con firm, then the 0755 87 87001 ca n be set, fi ll in th e “*” char acter in o ther blank bi ts, as shown in Fig.5-39. Pr essing F1(ESC ) to exit the setu p of the fault call- back number 1.
Chapter 5 Operatio n of Displa y Panel 64 2001-1 1-08 UL33-0400L 12:30:20 Inv. On Units: ID 1 A(B) B(C) C(A) 221 11 . 8 12. 3 12.5 50.2 50.1 50.1 1.41 1.
Chapter 5 Operation of Display Panel 65 2001-1 1-08 UL33-0400L 12:30:20 Inv. On Units: ID 1 A(B) B(C) C(A ) 221 11 . 8 12.3 12.5 50.2 50.1 50.1 1.41 1.
Chapter 5 Operatio n of Displa y Panel 66 2001-1 1-08 UL33-0400L 12:30:20 Inv. On Un its: ID 1 A(B) B(C) C(A) 221 11 . 8 12.3 12.5 50.2 50.1 50.1 1.41 1.
Chapter 5 Operation of Display Panel 67 Table 5-3 UPS Events No. Event Reason 1 Start throu gh ke ypad The user pr esses down the inverter start k ey, the s ystem will start inverter 2 Start t hrough .
Chapter 5 Operatio n of Displa y Panel 68 Table 5-4 UPS states No. State Reason 1 Bypass mode UPS bypass powe rs the load 2 Normal mode The UPS po wers the load thro ugh recti fier and inverter 3 Batt.
Chapter 6 Mainte nance 69 Chapter 6 Maintenance This chapter mainly introdu ces the daily using and maintenance o f UPS and t he operation i nside the UPS is n ot covered here . If maintenan ce should be done to the UPS, Q1, Q2 and QF1 should be disco nnected, and then wait for 8 minutes until there is no hi gh voltag e inside the U PS.
Chapter 6 Maintena nce 70 6.1. 2 Shut dow n 1. Shutdow n in norm al mode When the UPS requir es periodical checking or nee ds to stop oper ation, the shutdown process in n ormal mode is given below: 1.
Chapter 6 Mainte nance 71 5. Shutdo wn in United po wering mode The procedures of shutdown in United powering mode is the same with those of shutdow n in normal mode. 6.1.3 Transferring between o peration modes The UPS can transfer among vari ous operation mo des after i t is in normal mode.
Chapter 6 Maintena nce 72 begins to p ower the load. Press the “i nverter st art” if the user want s the inver ter to operate. 6.1. 5 Mute The buzzer sou nds when the UPS has faults . The user can press the “Mute” button for two seconds to sil ence the sound.
Chapter 6 Mainte nance 73 6.1.7 Monitoring system 1. Background co mmunication The monito ring syste m of this UPS system provides one RS232 port an d one RS485 port ( the definiti on of the p ort is in Sectio n 3.4.3), se veral input an d output dry cont acts (refer t o Section 3.
Chapter 6 Maintena nce 74 2. Monitoring single UP S UPS support the com munication modes t hrough RS232, R S485, MODEM and SNMP card. These communication modes can’t be used by one same UPS. The single UPS monit oring th eory is show n in Fig.6-1. Fig.
Chapter 6 Mainte nance 75 6.1.8 Input and output contacts The functions of input an d output cont acts are introduc ed in Chapter 3. 1. Output dry contact This UPS provid es 8 kinds of dry cont acts o.
Chapter 6 Maintena nce 76 Emergent stop: If the u ser is in short dis tance, short co nnecting the “U CTRH” and “UCTRL” can make the UPS shut down. Relay dr y contac ts shoul d be used here. Note: The user should be careful when using this functi on.
Chapter 6 Mainte nance 77 5 ） Check whether all the fans operate normally . The life of the fan in continuous operating state is 20000—4 0000 hours an d will be sho rtened if th e fan operate s in high temper ature envir onment.
Chapter 6 Maintena nce 78 Cable and connectors: Che ck whether the cable is aged, damaged or burn t; check whether the con nector of the PCB is secure; PCB: Check the cleaness a nd completeness 7 ） .
Chapter 6 Mainte nance 79 3 ） Keep the ambient t emperature between 1 5 ℃ and 25 ℃ . 4 ） T o prevent small current disc harge, continuo us battery discharge ti me exceeding 24 hours is proh ibited.
Chapter 6 Maintena nce 80 system will not start battery self t est if the last self-test inter val satisfi es the “batter y discharging interval ”, but does not satisfy t he manual s elf test condi tion, and th e system wi ll wait until the conditions a re satisfied.
Chapter 7 Troublesho oting 81 Chapter 7 Troubleshooting 7.1 UPS system troubleshooting The followi ng informatio n are only for ser vice engineers who are traine d in the repair and tr oubleshooti ng of the UPS. Th e maintenance engineer must be familiar with the UPS because the U PS is rather compli cated.
Chapter 7 Trouble shooting 82 Rectifier indi cator: If it t urns red, that mean s the rectif ier fails; Battery indicator : If it turns re d, that means t he battery is abnormal; Inverter indicat or: .
Chapter 7 Troublesho oting 83 7.4 LCD indicati on for fau lt informa tion The LCD on the UPS displays the fau lt information of T able 7-1 and T able 7-2. The user should locate and ana lyze the fault accordi ng to the table s and feedback the fault informa tion to our ser vice engineer s.
Chapter 7 Trouble shooting 84 No.1 Fault d escription Re ason Actions to be taken 15 By pas s unsynchroniz ed Bypass v oltage or frequenc y is out of normal ra nge and inve rter output is not synchr onized with the bypass output.
Chapter 7 Troublesho oting 85 No.1 Fault descripti on Reason Actions to be taken 30 Rectifier fan fails Rectifier fan is abn ormal Replace the fan in time and the UPS can recover automa tically 31 Rec.
Chapter 7 Trouble shooting 86 No.1 Fault d escription Re ason Actions to be taken 49 Transfer to bypass due to surge The system trans fers to b ypass mode due to surge cu rrent and back to inverter mo.
Chapter 8 Parallel System 87 Chapter 8 Parallel System 8.1 System Introduction 8.1.1 Basics The Liebert UPS use s intelligent and r eliable decentral ized parall el operati on technology . A maximum of four single uni ts of the s ame capacity can o perate in parallel .
C hapter 8 Par allel System 88 UPS in the system , and oper ation conditi on of each u nit can be moni tored throug h the remote computer . 8.1.2 Theory of Operation 1. Parallel Sy stem consi sting of t wo units This is the most frequently used config uration and it s operati on theory is shown in Figure 8-1 Fig.
Chapter 8 Parallel System 89 Fig. 8-2 Redundanc y operati on mode This system ca n improve the syste m reliability noti ceably . In normal condition, each UPS does not w ork at f ull load, so even if the l oad is in creased, the sy stem will n ot transfer to by pass.
C hapter 8 Par allel System 90 Fig. 8-4 Series backup mode Note The defau lt value of a lternative operation time is 168 ho urs and the r ange is 0-4320 hours 8.1.3 Operation modes The parall el operation system al so has operation modes such as norm al mode, battery mode, byp ass mode and maintena nce bypass mode.
Chapter 8 Parallel System 91 Maintenance mo de: The conditi on to transfer to mainte nance mode is same with that of single mod ule UPS system. The m aintenance swit ches should be switched on synchronously a s possible. Thus the syst em can be rep aired witho ut interrupting the power supply to l oad.
C hapter 8 Par allel System 92 8.2. 2 Ele ctri cal inst al lati on 1. Power cables Wiring of pow er cables is the same with th at of singl e module UPS sy stem. Note: The length and specificati ons of po wer source ca bles incl uding the by pass i nput and UPS output cables should be th e same, thus the load can be shared evenly in bypass mode.
Chapter 8 Parallel System 93 8.3 External Power Distribution Parameters su ch as maxim um permissibl e input c urrent (In is the r ated input current) of each UPS, cap acity of input circuit breaker(suit able for re ctifier input a nd bypass in put) are given in T able 3-5.
C hapter 8 Par allel System 94 Code setup : Each UPS unit has its own cod e, and set the codes of each UPS u nit as 1, 2, 3 .n(n 8) one by one; Set the num ber of UPS units N and number of redunda.
Chapter 8 Parallel System 95 When switching on the p arallel system, external mai ntenance byp ass switch KBP i s recommended be equipped to mai ntain t he power sup ply to load in case of UPS shutdow n due to failure or mainte nance.
C hapter 8 Par allel System 96 1. Press the “inverter shut down” t o shut down the inverter and the sys tem transf ers to bypass mo de; 2. Switch of f each UPS unit’ s Q1 and the QF1 of battery cabinet ; 3. Switch on e ach UPS unit ’s Q3BP ； 4.
Chapter 8 Parallel System 97 2. Normal mode to by pass mode Press the “inverter shut down” butto n on the UPS p anels one by one, all the UPS can transfer to byp ass mode. In the above oper ation, if the t otal ca pacity of all the inverters is smaller tha n the load cap acity , all the UPS unit will transfer from normal mode to bypa ss mode.
C hapter 8 Par allel System 98 Note At this time, t he input an d output ter minals of thi s failed UPS unit are still ener gized. Switch of f the unit’ s input and output circuit br eakers if t hese terminals may be touched during m aintenance .
Chapter 8 Parallel System 99 This figure only shows the conn ection method of control c ables of par allel operati on system with 3 UPS unit s. The others can be done according to the same metho ds.
C hapter 8 Par allel System 100 Tabl e 8-3 F ault a nd fau lt pr ocess met hods of paral lel o perat ion s yste m No. Fault description Reason s Fault processing 1 O verload of parallel operation s ys.
Chapter 9 Opti onal Parts 101 Chapter 9 Optional Parts 9.1 Battery 9.1.1 Capacity selection Calculate the disc harging curr ent according to rated load cap acity and the n select the b att ery acc ordi ng to the c urr ent and t he b att ery back up tim e re quir ed by us er .
Chapter 9 Opti onal Parts 102 9.2 Battery cabinet 9.2.1 External Dimensions The UPS system has two ki nds of battery cabinet s that are UF-B0 100-30 and UF- B0065-30 respectiv ely . The External Dimensi ons are given i n Fig. 9-1 and Fig. 9-2 respectively .
Chapter 9 Opti onal Parts 103 4 fixing holes 4 levelling bolts 4 fixing holes 4 levelling bolts Fig. 9-2 Posi tions of l eveling feet of batter y cabinet 9.2.2 Installation of battery cabinet The require ments for the locations of battery cabi net are the same with those of UPS cabine t, so are th e instal lation and fixing met hods.
Chapter 9 Opti onal Parts 104 Layout for No.2~4 fl oors Layout for No.1 floors General Layout Fig.9-3 Batter y layout inside battery cabin et UF-B0100-30 can hold 30 12V /100Ah maintena nce free batteries. The volt age can be 360V af ter the b atteries ar e connected in seri es.
Chapter 9 Opti onal Parts 105 a. Unp ack the battery , measure the battery vol tage , charge the battery before installati on if the singl e battery cell volt age is l ower than 2.
Chapter 9 Opti onal Parts 106 provided by battery manuf acturer . The battery output circu it breaker should be made sep arately . The method is use d if the require d backup time is lo nger than 2 hours. l. The connection ca bles betwee n battery and U PS will not be provide d in accessories.
Chapter 9 Opti onal Parts 107 Support SN MP , HTTP , TFTP and T elnet protocols an d can monitor the UPS through the UPS netw ork monitoring sof tware (U PSiteCenter), NMS and Web expl orer （ IE and Netscape ） . The SNMP card can be upgr aded online; Prov ide t he comp uter saf ety p rot ect ion f unc tio ns.
Chapter 9 Opti onal Parts 108 b. Set up the fau lt call-back p arameters . The monitori ng system c an realize fault call-back fun ctions throug h the MODEM.
Chapter 9 Opti onal Parts 109 9.7.1 Introduction of SPD24Z The SPD24Z lig htning protectio n box has a switch( 3) on its p anel, a light ning protection in dicator(green, 1) and faul t indicator （ red,2 ） . Its top cover has 3 hole s for cable inp ut （ I ～ III ） and it s bottom h as 3 holes for cable outp ut.
Chapter 9 Opti onal Parts 110 h. Check whet her the cables are well connected. i. Use a 4mm 2 cabl e to earth t he lightnin g protecti on device . j. Close the cover . Note 1. All operations sh ould be done with power off an d confirm there is no dangerous voltage on the neutra l line 。 2.
Chapter 9 Opti onal Parts 111 9.7.3 Using and Mainte nance 1. Ambient cond ition a. Ambient t emperature ranges from -40 ℃ to 40 ℃ ; b. Elevation lower than 1000m ; c. The utility freq uency is 45 ～ 65Hz ; d. The highest wind speed not exceed 35m/s .
Chapter 10 Se rvice after Sales 112 Chapter 10 Service after Sales 10.1 Abnormal Fault Handling If the UPS is abn ormal without alarm indicat ion, check accordi ng to T able 10-1 . Table 10-1 Fault handling No.1 Fault description Reason Actions to be taken 1 Utility switch is pu t to “ON”, no dis play by LCD, no se lf te st of sy stem A.
Chapter 10 Serv ice after Sales 113 Table 10-2 Fault information of Single module UPS system No.1 Fault description Reason Actions to be taken 1 Ambient over-tempera ture over-temperatu re of UPS room.
Chapter 10 Se rvice after Sales 114 No.1 Fault description Reason Actions to be taken 16 Battery needs to be replaced The battery life is reduc ed due to aging, which may endanger the normal operati on of UPS. Warn the user tha t the batt ery is abnormal an d needs to be replaced.
Chapter 10 Serv ice after Sales 115 No.1 Fault description Reason Actions to be taken 34 Output surge current Surge curre nt occurs in bypass mode, the sy stem shutdown Avoid appl ying big load a brup.
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