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54

IV. PARALLEL OPERATION

4.1 Introduction

Two (or more) identical ARTonPlus Series UPSs can be interconnected for parallel operation.
The main purposes for parallel use of ARTonPlus Series UPSs are:

      -Redundancy for Increased Reliability
      -Power Increase

Although recent UPS designs are perfect and have high MTBF figures, a second (or more) UPS can be
used in parallel with the first one, for supplying the critical load in case of any possible failure of the first
UPS. In such an application the faulty UPS is isolated automatically from the parallel system and the other
UPS (or UPSs) continues to supply the critical load. Use of Redundant UPSs in parallel, therefore, provides
increased reliability for the critical load connected to the parallel system output.

If power demand increases in a certain UPS appliction exceeding the power rating of an already installed
stand-alone UPS, a second (or more) UPS of the same model and power rating can be added in parallel to
the existing UPS to increase the output power capacity.

Schematic diagram of parallel connection of two ARTonPlus Series UPS units is shown in Figure 4.1

3 PHASE

MAINS I/P

3 PHASE

AC Output

Rectifier /

Charger

Battery

(Dual Polarity)

Maintenance

Bypass Switch

Static

Bypass

S2

(F4-F5-F6)

S1

(F1-F2-F3)

S5

(F10-F11-F12)

S3

S4

(F7-F8-F9)

Inverter

K2

K1

̃

-

-

̃

SB

Rectifier /

Charger

Battery

(Dual Polarity)

Maintenance

Bypass Switch

Static

Bypass

S2

(F4-F5-F6)

S1

(F1-F2-F3)

S5

(F10-F11-F12)

S3

S4

(F7-F8-F9)

Inverter

K2

K1

̃

-

-

̃

SB

Figure 4.1

Parallel Connection of two UPSs

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Содержание ARTon Plus series

Страница 1: ...SERVICE TRAINING NOTES ARTon Plus SER S UPS 10 15 20 30 40 kVA 3 Faz Giri 3 Faz k...

Страница 2: ......

Страница 3: ...nd Current Sample Board 34 II UPS INSTALLATION 39 2 1 Introduction 39 2 2 Unpacking 39 2 3 Equipment Positioning 39 2 4 Connecting the UPS power cables 39 2 4 1 Safety Earth 40 2 4 2 Cable connection...

Страница 4: ...ing the parallel UPS system into parallel operation from a Maintenance Bypass power down condition Uninterrupted transfer 61 VI MAINTENANCE 62 6 1 Scheduled Maintenance 62 6 2 Daily checks 62 6 3 Week...

Страница 5: ...supply even when the input AC power is disconnected To reduce the risk of electric shock disconnect the UPS from the mains supply before installing a computer interface signal cable Reconnect the powe...

Страница 6: ...DC power and then converting it back to AC Double Conversion any electrical noise present on the input mains supply line is effectively isolated from the UPS output Therefore the critical load is supp...

Страница 7: ...se input current harmonics THDI The IGBT rectifier accepts 3 phase AC input and produces a dual polarity DC voltage for both supplying the inverter and charging the batteries BATTERIES Batteries are u...

Страница 8: ...that time inverter keeps running under no load conditions and takes over the load in case of a mains supply bypass supply failure without any interruption After restoration of the mains supply the lo...

Страница 9: ...Battery circuit breaker Input Emergency Stop Line Failure Relay Battery Low Relay RS232 SNMP Communication Select Switch S7 ON OFF Switch S5 Battery Input F10 F11 F12 S1 AC Input F1 F2 F3 S3 Maintenan...

Страница 10: ...Battery circuit breaker Input Emergency Stop Line Failure Relay Battery Low Relay RS232 SNMP Communication Select Switch S7 ON OFF Switch S5 Battery Input F10 F11 F12 S1 AC Input F1 F2 F3 S3 Maintena...

Страница 11: ...z Output Frequency Tolerance line synchron 2 Output Frequency Tolerance free running 0 2 Efficiency at full linear load up to 94 Load Crest Factor 3 1 Output Voltage THD 3 Overload 125 Load 10min 150...

Страница 12: ...a s e A C I P A C In p u t S W F u s e R E C T IF IE R IN P U T C O N T A C T O R 3 P h IG B T R E C T IF IE R 4 0 5 V 4 0 5 V K 1 F U S E 3 P h IN V E R T E R O U T P U T S W F U S E K 2 B U S C A P...

Страница 13: ...9 Figure 1 4 2 IGBT Rectifier...

Страница 14: ...10 Figure 1 4 3 Transformerless 3 Phase Inverter...

Страница 15: ...11 Figure 1 4 4 ARTonPlus series UPS Basic Diagram...

Страница 16: ...R1 DC 3 PHASE AC VOLTAGE SAMPLE BOARD 5 SDXC300 R1 BYPASS INVERTER SCR DRIVER BOARD 6 STP01 R2 SWITCHING POWER SUPPLY BOARD 7 MODPAN02 R1 LCD PANEL BOARD 8 ITF3 R2 3 Ph 3 Ph UPS INTERFACE BOARD 9 RS3...

Страница 17: ...13 1 5 1 PCB LOCATIONS SDXC300 R1 ADVS01 R1 OPS3 RS330 R1 TOP VIEW Figure 1 5 1 10 15 20 kVA ITF3 R2 FRONT VIEW LEFT VIEW IPMD3P P3MC R5 RIGHT VIEW STM01 CPC01 R2 STP01 R1 PFC3P R1 IPMD3P...

Страница 18: ...14 Figure 1 5 2 30 40 kVA SDXC300 R1 ITF3 R2 FRONT VIEW LEFT VIEW P3MC R5 RIGHT VIEW STM01 CPC01 R2 STP01 R1 IPMD3P RS330 R1 TOP VIEW OPS3 ADVS01 R1 PFC3P R1 IPMD3P...

Страница 19: ...d the other thirty are used for the opposite polarity The float charging voltage value for 2X30 batteries is 405V dc Therefore the no load output voltage of the IGBT rectifier is adjusted to 405V 810V...

Страница 20: ...c at 220V TP9 S phase AC input current sample TP10 12V dc 0 5V TP11 12V dc 0 5V TP12 17V dc 1 0V TP13 T phase full wave rectified AC input voltage sample V peak at 220V TP14 T phase IGBT driving signa...

Страница 21: ...17 Figure 1 5 3 PFC3P R1 Board...

Страница 22: ...bus voltage is below that value RL1 is de energized and the supply voltage to electronic control boards and to the IGBT drivers are turned off 4 This board accepts CN1 the driving signals generated by...

Страница 23: ...19 Figure 1 5 4 IPMD3P Board...

Страница 24: ...Series CN2 It s connected to CN7 of the SDXC300 R1 board Pin1 Pin2 0 volt GND Pin4 IGBT rectifier start signal output Pin6 Start boost charge signal output Pin7 battery current sample Pin8 Bypass enab...

Страница 25: ...dpoints of voltage sampling transformer outputs CN10 It is connected to CN1 of IPMD3P board Pin1 IGBT fault overcurrent signal input Pin2 battery voltage sample Pin3 Pin4 12V Pin5 Pin6 0 volt GND Pin9...

Страница 26: ...equency to 51 4 0 1Hz using VR8 Disconnect TP18 from TP12 and connect it to TP9 0V this time TP18 TP9 and check if the output frequency is 48 6 0 1Hz Repeat the adjustment procedure until you have equ...

Страница 27: ...in11 0V DC U38 Pin10 19200Hz square wave U39 Pin3 50Hz square wave U39 Pin14 50Hz square wave E P3MC R5 Board jumper positions There is only one jumper on this board which is JP1 It is used to enable...

Страница 28: ...24 Figure 1 5 5 P3MC R5 Board...

Страница 29: ...this fault signal is produced LD1 red LED is turned on The DC fault signal is available on CN9 and any other external fault signal can be connected in parallel with this signal e g the output fault s...

Страница 30: ...Phase TP9 4 8 0 1 VDC Vref1 TP10 3 3 0 1 VDC Vref2 TP11 12VDC 0 5V C ADVS01 R1 Board jumper Positions J1 J2 1 inserted or short circuited JP1 1 DC fault protection enabled D ADVS01 R1 Board Fuses F1...

Страница 31: ...27 Figure 1 5 6 ADVS01 R1 Board...

Страница 32: ...rd to energize or de energize the inverter output contactor K2 The NO contact of relay RL1 is used for this purpose CN14 3 SDXC300 R1 board is supplied by HF supply signals connected to CN4 or CN5 B S...

Страница 33: ...29 Figure 1 5 7 SDXC300 R1 Board...

Страница 34: ...d or negative DC supply voltages for the operation of each board CN1 1 Input COMMON Neutral CN1 2 Input supply AC or DC CN1 3 CN1 4 2 When the ON OFF switch of the UPS is turned on the DC bus voltage...

Страница 35: ...output switch aux contact NO Pin5 Pin6 Maintenance bypass switch aux contact NO Pin7 Pin8 Thermic contact NC Pin9 Pin10 Fuse fault contact NO CN5 It is connected to CN4 of RS330 R1 Serial Communicatio...

Страница 36: ...32 Figure 1 5 9 ITF3 R2 Board...

Страница 37: ...oo low 160V AC or has a high DC component probably resulting from inverter damage bad connection or SCR failure etc then a DC fault signal is produced on this board CN1 1 Neutral CN1 3 UPS output T ph...

Страница 38: ...The current samples are sent to the main controller board P3MC R5 again through CN7 of OPS3 board CN2 R phase input current sample CN3 S phase CN5 T phase 3 It takes the low voltage bypass samples fr...

Страница 39: ...35 Figure 1 5 11 OPS3 Board...

Страница 40: ...36...

Страница 41: ...37...

Страница 42: ...38...

Страница 43: ...Retain the carton and packing material for future use Unit package contents 1 A user manual and Guarantee certificate 2 Battery cabinet and or shelf Optional 3 Battery connection cables 2 3 Equipment...

Страница 44: ...neutral bonding arrangements must be in accordance with the local laws ATTENTION Failure to follow adequate earthing procedures can result in electric shock hazard to personnel or the risk of fire 2...

Страница 45: ...Connections Rectifier Inputs 3 Phase N By Pass Inputs 3 Phase N UPS Outputs 3 Phase N Battery Group Battery Group Figure 2 2 30 40 kVA Cable Connections Rectifier Inputs 3 Phase N By Pass Inputs 3 Ph...

Страница 46: ...clean and dry environment at reasonable temperatures to obtain efficient battery operation In general a minimum space of 10 mm must be left on all vertical sides of the battery block A minimum cleara...

Страница 47: ...43 30x12V Batteries 30x12V Batteries 0 360V Nominal 360V Nominal 0 K1 K2 K3 K2 Figure 2 3 External Battery Connections 60x12V...

Страница 48: ...44 K3 K1 K2 K2 Figure 2 3 ARTonPlus series 10 15 20 KVA Internal Battery Connections 2x30 60x12V 7Ah...

Страница 49: ...g u r e 2 4 A R T o n P l u s s e r i e s 30 4 0 K V A I n t e r n a l B a t t e r y C o n n e c t i o n s 2 x 60 p c s 1 2 V 7 A h T w o d u a l p o l a r i t y b a t t e r y g r o u p s i n p a r a...

Страница 50: ...he selected option or menu is valid 3 2 Front Panel Menu Descriptions By using the buttons on the front panel you can move on main menu functions You can enter the submenus of the item seen on the LCD...

Страница 51: ...event is the last event Date ddmmyy time hh mm On the second line of LCD PANEL you can see al recorded alarms Use PLUS and MINUS keys for moving on events 3 ENTER CLEAR LOG Enter clear log event recor...

Страница 52: ...arallel operation select different number for each UPS If you select the same number DUBL UPS NUMBER message tells the fault press ENTER for 3 seconds and the selection is valid 3 REMOTE ENABLE By usi...

Страница 53: ...this function is disabled and you see BYP FUNC DISABLE message on this submenu item 4 ENTER MODEM INIT If you press ENTER key the connected modem of RS232 port is installed UPS sends AT command set to...

Страница 54: ...tected WAITING SYNC Inverter started and waiting for synchronization STATUS FAULT Fault status STATUS WARNING Warning message is valid on LCD panel CLOSE BATT CB UPS is waiting for battery CB to be cl...

Страница 55: ...these commands If the shutdown command is performed during line failure UPS shutdowns and if the mains is okay UPS starts again automatically 3 5 Fault Messages and Quick Troubleshooting All alarms co...

Страница 56: ...ly During bypass if the bypass protection option is ON and if the bypass source is out of tolerance UPS switches off the static bypass for load protection A17 BATT CB OPEN Battery circuit breaker is o...

Страница 57: ...s supply from COMMAND MENU A64 INV BALANCE DC balance problem at the Inverter output Call service A65 MAINS HIGH AC Input Voltage above the tolerated value Additional Alarm codes for Parallel Operatio...

Страница 58: ...therefore provides increased reliability for the critical load connected to the parallel system output If power demand increases in a certain UPS appliction exceeding the power rating of an already i...

Страница 59: ...without any interruption If the fault is cleared and if everything returns to normal operating conditions the Inverters of all UPSs in the parallel system resume the load together at the same time The...

Страница 60: ...e parallel system N 1 numbers of UPS units during normal operation In case of a failure of any one of the UPS units the faulty UPS is isolated from the parallel system and the critical load is supplie...

Страница 61: ...on of all the UPS units as shown in Figures 4 2 and 4 3 turn on each UPS unit one by one and select the operation mode and assign a UPS No using OPTIONS MENU All the units must be set for the same ope...

Страница 62: ...allel operation BATTERIES Figure 4 3 ARTonPlus Series Parallel UPS Power Connections U V W N LOAD FUSES AC OUTPUT BYPASS AC INPUT MAIN AC INPUT AC DISTRIBUTION BOARD U1 V1 W1 N1 U2 V2 W2 N2 UPS1 K3 K2...

Страница 63: ...3 Turn on S4 AC Output ATTENTION AS SOON AS YOU TURN ON ON OFF SWITCH S7 BYPASS VOLTAGE WILL APPEAR ON THE OUTPUT TERMINALS 4 Turn on S7 ON OFF Switch LCD panel will start running RECTIFIER START mes...

Страница 64: ...Battery Now the UPS is ready for normal operation 5 3 1 Procedure For Turning on the UPS First Installation With all the switches S1 S2 S3 S4 and S5 in OFF 0 position and with S6 static bypass switch...

Страница 65: ...1 Switch S6 static bypass switch for parallel UPSs of either one of the UPS units into STATIC BYPASS position 2 See that the red coloured by pass LEDs L4 on the front panels of all UPSs are turned on...

Страница 66: ...rameter measurements are normal and there is no alarm message on the indicator panel 2 Check if the device is overheated 3 Check the cooling fans operations 4 Check if there is any sensible change in...

Страница 67: ...efore storage If the charge is not enough then charge the batteries at least for 12 hours 2 Qualified service personal should disconnect the electrical connections 3 Batteries should be charged every...

Страница 68: ...parameters must be recorded regularly as mentioned previously Generally the output voltage can deviate 2 from the predefined values If values differ more than this percentage then reasons must be inv...

Страница 69: ...TEST BATTERY TEST until battery low alarm CANCEL battery test Turn off UPS output voltage immediately SHUTDOWN Turn off UPS output voltage after delay WAITING SHUTDOWN Turn off UPS output voltage SHU...

Страница 70: ...dem device who performs a phone call to the UPS connected number So the operator can see all parameters and control the UPS if permitted from OPTIONS MENU 8 3 1 Hardware Configuration All requirements...

Страница 71: ...2400 PARITY N WORDLEN 8 DIAL TONE TONE which can be programmed A3 B1 C1 D0 H1 I0 K1 M4 N0 R2 S0 T5 Y1 8 3 4 Modem UPS Connection Cable The connection cable between NULL modem and UPS is configured as...

Страница 72: ...e reversed by the user i e all relays are energized normally and de energized in case of alarm 8 5 Remote Monitoring Panel Remote monitoring panel can be extended to 400 meters away from UPS Up to 25...

Страница 73: ......

Страница 74: ...1 AGKK7080 01 2008...

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