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4.5.  OPERATING STRUCTURE OF A PARALLEL SYSTEM.

 

 

This 

Uninterruptible  Power  Supply  Systems  series  is  designed 

and thought as «parallel» connection with a maximum of four units, 
in  the  condition  that  they  are  the  same  model  (setting,  voltage, 

power,  frequency,  back-up  time,  ...),  all  of  them  without  adding 
hardware. Fig. 22 and 23, as examples, show the circuit diagrams 
of a three-phase input/three-phase output parallel system, with and 
without separate static bypass line. Both circuit diagrams are only 
showing  the  input-output  power  connections  and  the  parallel 
control BUS. 
A part from the possible setting, conceptually, the parallel systems 

are divided into two similar structures and at the same time very 
different depending on the application. 
Systems  connected in  parallel  or  active  parallel,  supply  the  loads 

equally among them. Less when there is only one UPS, the system 
will  be  able  to  be  redundant  or  non-redundant  depending  on  the 
needs and requirements of the application. 
•   

Simple  parallel  system  (non-redundant)

: a non-redundant 

parallel system, is that one where all UPSs supply the required 
power  by  the  loads.  Total  power  of  the  system  based  on  N 
equipment of nominal power rate Pn, is N x Pn. 
If  the  system  is  operating  with  a  load  close  or  equal  to  the 

maximum  and  one  of  the  faults,  the  load  will  be  shifted  to 
bypass  automatically  with  “ make  before  break  technique”, 
because  it will not be able to support the consumption demand 
due to the overload that it will be caused in the rest of UPSs. 

•   

Redundant  system

: a redundant system is that one has one 

or more UPSs than the minimum required by the total power of 
the system (depending on the redundancy level), being the load 
fair shared among them. So, the fault of any of them will cause 

the  damage that  UPS  will  be  out  of  the  system  and  the  rest 
will continue supplying the load with all the guarantees. Once 
the damaged UPS is fixed, it can be connected to the system in 
order to recover the redundant condition. 
A  system  with  his  configuration  increases  the  reliability  and 

assures a quality of AC power supply for the most critical loads. 
The  quantity of  redundant equipment  to  be  connected has  to 

be studied according to the requirements of the application. No 
matter Parallel connection is redundant or  not, it  adds several 
advantages apart from the connection itself: 

•   

Higher  punctual  power  and  back-up  time

:  in  a  parallel 

system  of  N+M  equipment,  it  is  considered  the  nominal 
maximum load of N equipment and +M are the reserve on

es, 

so: 

 

N, is the quantit

y of equipment in parallel, corresponding to 

the minimum quantity required by the total needed power. 

 

+M, is the additional quantity of equipment corresponding 
to the residual safety power (redundant equipment). 

Although, in practice it can drain the total power in which the 
N+M system can supply, the redundancy r

equirement or 

conception does not advice it and in compensation there is a 
surplus of dynamic power against load demands. i.e., a 
redundant parallel system with 3 UPS of 40 kVA and N+1 
configuration, the nominal maximum load contemplates 80 kVA 
(2x40 kVA), although the system can accept load demands up 
to 120 kVA (3x40 kVA). 

Ther

efore, the fact of M reserve equipment, increases 

the back-up time of the set because the battery set is higher. 

•   

Modularity

: capacity can be added to a UPS parallel system 

by  adding equipment of the same feature, without needing to 
replace  the  equipment  already  installed.  i.e.,  if  time  later,  an 
installation with a parallel system of 2 UPSs is detected that the 
capacity of this system is not enough, it can be opted for adding 
a  third  equipment  to  the  system,  without  replacing  the  2 

original equipment. 
 

The UPS parallel system management of 

UPS 

series is done by a 

MASTER-SLAVES  protocol,  where  only  one  equipment  (MASTER) 
takes the control of the rest ones (SLAVES). So, the control of the 
output  voltage,  bypass  shifting,  disconnections,  mains 
synchronization  are  managed  by  the  MASTER  equipment,  and 
transmitted  to  the  SLAVES  equipment  through  the  management 
bus of the parallel system. 
This MASTER or SLAVE condition is dynamic as it is described later 

and  it  will  depend  on  several  factors  (initial  status  of  the 
equipment,  chronological  order  of  commissioning  or  shutdown  of 
the system through one equipment or other) 
 

Summary of Contents for Taurus UPS-10

Page 1: ...7 Touch LCD Online UPS 208V 7 5K 60KVA 400V 10K 200KVA Uninterruptible Power Supply System User Manual...

Page 2: ...X4 5 2 2 Connection of separate static bypass line terminals X14 a X17 UPS B version only 5 2 3 Connection to the output terminals X6 to X9 5 2 4 Connection to the battery terminals of the equipment...

Page 3: ...hand during the installation and commissioning procedures In the next pages the equipment or unit and S T S terms are referred to the Uninterruptible Power Supply UPS and Service and Technical Support...

Page 4: ...urrent a c Direct current d c 2 1 2 For more information and or help For more information and or help of your specific unit request it to our Service and Technical Support S T S 2 2 SAFETY INSTRUCTION...

Page 5: ...any installation task Do not store install or expose the equipment in corrosive wets warm dusty environments or with conductive parts and never outdoors The best location for installation should be c...

Page 6: ...ration Once the respective actions are completed recover the equipment to it was with the protection cover put back and front door closed To shut down the equipment completely follow the instructions...

Page 7: ...ied personnel who will be responsible for applying the safety and EMC regulations and standards controlling the particular installations and the place where the product is destined 2 2 3 Safety warnin...

Page 8: ...particular due to this last period and safety reasons the energy generator should be handled with care especially to prevent batteries from unnecessarily discharging during these periods of time When...

Page 9: ...ers EN IEC 60950 1 IT equipment Safety Part 1 General requirements EN IEC 62040 2 Uninterruptible power supply UPS Part 2 EMC requirements The manufacturer s responsibility excluded the event of any m...

Page 10: ...of the same family because the necessary electronic kit is included Connection in parallel can be done at any time when the upgrading requirements are needed to increase the supplied power of the equi...

Page 11: ...from 7 5 to 30 kVA LV 10to 60 kVA HV with or without separate static bypass line B Fig 2 UPSfrontview from 40 to60kVA LV 80 to120kVA HV without separate static bypass and 40 kVA LV 80 kVA HV with sep...

Page 12: ...CD Touch Screen View 1 Equipment with extended back up time only Fig 4 UPS Front view with door opened 7 5KVA to 20KVA LV 10KVA to 40KVA HV models Fig 5 UPS Front view with door opened 30KVA LV 60KVA...

Page 13: ...iew with door opened 7 5KVA to 10KVA LV 10KVA to 20KVA HV models with separate static bypass line UPS B models Fig 7 UPS Front view with door opened 15KVA LV 30KVA HV models with separate static bypas...

Page 14: ...12 Fig 8 UPS Front view with door opened models 20KVA LV 40KVA HV with separate static bypass line UPS B models Fig 9 UPS front view with door opened models 40kVA LV 80KVA HV...

Page 15: ...13 Fig 10 UPS front view with door opened models 50 and 60 kVA LV 100 and 120 kVA HV without separatestatic bypass line...

Page 16: ...14 Fig 11 UPS front view with door opened models 80 and 100 kVA LV 160 and 200 kVA HV without separatestatic bypass line...

Page 17: ...15 Q8 X47 X49 X48 BF X5 PR X10 Fig 12 Battery cabinet front view No 1 with door closed Fig 13 Battery cabinet front view No 1 with door opened...

Page 18: ...16 Q8 X47 X49 X48 X5 PR X10 Fig 14 Battery cabinet front view No 2 with door closed Fig 15 Battery cabinet front view No 2 with door opened...

Page 19: ...17 Fig 16 Battery cabinet front view No 3 with door closed Fig 17 Battery cabinet front view No 3 with door opened...

Page 20: ...static bypass phase R B version only X15 Terminal of static bypass phase S B version only X16 Terminal of static bypass phase T B version only X17 Terminal of static bypass neutral N B version only 1...

Page 21: ...ng BL of switch Q5 By means of the connectors X36 and X36 the communication loop or ring is closed between two or more equipment connected in parallel by means of the bundle BC These connectors are no...

Page 22: ...s it is used to filter the DC needed for the correct operation of PFC converter and inverter 4 3 3 Batteries This UPS series has a battery set that stores energy during the normal operating mode prese...

Page 23: ...hem The bypass stage is based on six double thyristors in semipack format working as AC switches three of them are for shifting the input over the output and the other three are for shifting the inver...

Page 24: ...consigning a battery discharging current even with existing mains This quality performance will make it possible to do a battery test both in full load and in no load conditions Output three phase rec...

Page 25: ...d in the previous section 4 4 1 Normal operating 4 4 3 Operating with non active inverter The inverter is non active due to alarm conditions like overloads over temperatures etc In this case the recti...

Page 26: ...W N Inp Out COM connections Inp Out Fig 22 Single line diagram connection of parallel system up to 4 units of UPS models COM connections Inp Out R S T N R S T N COM connections U V W N Inp Out COM con...

Page 27: ...ures a quality of AC power supply for the most critical loads The quantity of redundant equipment to be connected has to be studied according to the requirements of the application No matter Parallel...

Page 28: ...attached to the impact indicator located on the packaging Unpacking Check the content before deserting the packaging Unpack the package according to the Unpacking procedure in the supplied document in...

Page 29: ...nce of the floor kg m2 25 cm 25 cm 150 cm 25 cm 25 cm 5 1 4 Location immobilization and considerations 5 1 4 1 Location for single equipment As i e Fig 24 itshows two typical cases depending on the mo...

Page 30: ...ion referred to the installation of a single equipment or parallel system Switchgear or external manual bypass panel boards It is advisable to have an external manual bypass panel board equipped with...

Page 31: ...r power rate are supplied in a separate cabinet Therefore battery protection is arranged as follows In the UPS stated in this document as Q3 Battery fuse holder switch with 3 fuses in models up to 20...

Page 32: ...ipment Connection to three phase mains Connect the power supply cables R S T N to the input terminals X1 X2 X3 and X4 respecting the phase rotation and neutral indicated on the label of the equipment...

Page 33: ...loads to U V W N output terminals X6 X7 X8 and X9 respecting the phase rotation and neutral indicated on the label of the equipment and in this manual If the phase rotation is not respected the equip...

Page 34: ...ng one side to terminals X11 X23 and X12 of UPS and the other one to terminals X47 X49 and X48 of battery module always respecting the stated polarity on the labelling of each element and this manual...

Page 35: ...a communication cable of just 3 wires Physical structure of the RS 232 Pin 2 RXD Serial data reception Pin 3 TXD Serial data transmission Pin 5 GND Ground signal Physical structure of the RS 485 Unli...

Page 36: ...that allows compensating the floating voltage according to the ambient temperature Any wire connected to the terminals X34 X45 and X51 will be entered into the equipment through the cable bushing PR...

Page 37: ...cation BUS To do it connect them in a sequential way two lines of the communication BUS between a unit and its adjacent Together with each UPS of a parallel system it is supplied a 15 wires bundle wit...

Page 38: ...ts to be a guide to clarify the possible doubts on how the communication loop has to be connected To see the physical layout of the COM connectors for each power rate refer to the illustrations of fig...

Page 39: ...n mean while the input voltage is available In those installations without the external manual bypass panel board omit the actions and steps that involve the maneuvering of their switches Fig 33 Proce...

Page 40: ...UPS in the system Turn the input switch Q1a to On position for each UPS in the system Each display of the Control Panel will be turned on automatically Do not close any other switches at this time Re...

Page 41: ...trol panel Turn the output switch Q2 of the UPS On 6 5 COMPLETE SHUTDOWN OF THE UPS Shutdown the loads If the system has outgoing distribution protections switch them Off Shutdown the inverter Please...

Page 42: ...maintenance bypass to normal operation In model with external battery cabinet set fuse holder switch from battery cabinet Q8 to On position In standard units set the input switch Q1a to On position I...

Page 43: ...home from any screen of any submenu we can go back to main screen Screen 0 0 Fig 35 Screen 0 0 Main Screen 7 2 2 CONTROL Level screen menu 1 0 Screens 1 1 and Screen 1 2 It s to start and stop the un...

Page 44: ...about the battery test is given Possible messages EXECUTING The battery test is running SUCCESSFUL The battery test has been successful NOT SUCCESSFUL The battery test has not been successful Screen...

Page 45: ...urrent for three phase equipment per phase for single phase equipment accuracy 0 1A Charging Current Positive and negative accuracy 0 1A Discharging Current Positive and negative accuracy 0 1A Screen...

Page 46: ...he options are the following SEC MODBUS Screen 3 3 Automatic battery test setting The options for the Type to be programmed are the following DISABLED The automatic battery test is disabled WEEKLY The...

Page 47: ...this level an authorized password will be required to modify some advanced parameters If you need to modify advanced setting please check with your dealer to get password Screen 3 5 Rated Value To mod...

Page 48: ...m appears when the input the unit is under main failure condition and the level of battery is lower than 11 5V bat Alarm 4 This alarm appears when the inverter output voltage phase to neutral in any p...

Page 49: ...op UPS Stop 71 Parallel System UPS Stop 72 Emergency Power Off No Output Voltage BYP STOPS 38 Output Short circuit No Output Voltage 39 DSP Internal Error UPS Block All 40 DC BUS Voltage Wrong Rectifi...

Page 50: ...l be blocked after 30 and a blocking alarm 61 will appear Alarm 33 This alarm appears when there is a DSP Internal Error in the inverter module shutting down the inverter immediately There will be 4 m...

Page 51: ...ed Alarm 64 If there is a blocking condition for the inverter and also a blocking condition for the PFC this alarm appears blocking also the UPS Alarm 65 This alarm can be activated due to a connectio...

Page 52: ...as already been chosen as a Fix Master in the system a second error or break in the communications has been detected by the Slaves equipment which will be blocked permanently Rectifier and Inverter ar...

Page 53: ...tween 3 and 7 years if the ambient temperature is between 10 and 20 C To have more information of its status activate the battery test Risk of fire and or explosion exists if a wrong quantity or type...

Page 54: ...rest factor 3 4 to 1 3 2 to 1 2 8 to 1 3 2 to 1 3 to 1 Permissible power factor 0 7 leading to 0 7 lagging Unbalancedoutputvoltage 100 unbalancedload 1 Current limit High overload short circuit RMS vo...

Page 55: ...d THD i 5 0 100 load THD i 1 5 50 load THD i 2 0 10 load THD i 6 0 Current limit High overload PFC limit discharging batteries Power factor 0 99 from 10 load INVERTER Output nominal voltage Single pha...

Page 56: ...UPS CONFIGURATIONS WITH STANDARD BACK UP TIME Quantity of cabinets 1 UPS batteries 1 UPS 1 batteries Maximum dimensions mm Depth x Width x Height UPS UPS B1 770x450x110 875x590x1320 850x900x1900 UPS B...

Page 57: ...uit through which are sent or received signals from a system or subsystems toward others kVA The voltampere is the unit of the apparent power in electrical current In direct current is almost equal to...

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