ZGR SCALABLE 60 KVA User manual

Operation Manual
ZGR SCALABLE 60 300 KVA
Online Three-phase UPS
www.zigor.com

ZGR SCALABLE 60 –300 KVA
Manual de operaciones
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1
INDEX
1PRECAUTIONS..................................................................................................................................................... 3
1.1 General precautions.....................................................................................................................................3
1.2 Storage precautions.....................................................................................................................................4
1.3 Environmental precautions ..........................................................................................................................5
1.4 Precautions on receiving the unit................................................................................................................. 6
1.5 Precautions on the transportation of the unit..............................................................................................6
1.6 Symbol Description......................................................................................................................................6
2GENERAL DESCRIPTION..................................................................................................................................... 7
2.1 Introduction..................................................................................................................................................7
2.2 Main characteristics.....................................................................................................................................7
2.3 Construction of ZGR SCALABLE 60 300 KVA..........................................................................................7
3OPERATION OF ZGR SCALABLE 60 300 KVA............................................................................................... 13
3.1 Operation Modes .......................................................................................................................................13
Normal mode..........................................................................................................................................13
Battery mode (Stored Energy Mode) .....................................................................................................13
Bypass mode .........................................................................................................................................14
ECO Mode..............................................................................................................................................14
Maintenance mode (Manual Bypass).....................................................................................................15
3.2 Turn on/off UPS .........................................................................................................................................15
Restart procedure ..................................................................................................................................15
Test procedure.......................................................................................................................................16
Maintenance bypass..............................................................................................................................16
Cold start procedure..............................................................................................................................17
Shut down procedure ............................................................................................................................17
Startup procedure for parallel system ...................................................................................................18
4Control panel and monitorization ....................................................................................................................... 19
4.1 LCD Display ...............................................................................................................................................19
Datas menu............................................................................................................................................19
Status menu...........................................................................................................................................20
Alarm menu............................................................................................................................................23
Setting menu..........................................................................................................................................25
Maint menu ............................................................................................................................................38
Common menu.......................................................................................................................................41
About Menu............................................................................................................................................42
4.2 List of events and alarms...........................................................................................................................43
Fault Information ....................................................................................................................................43
Alarm Information...................................................................................................................................45
5INSTALLATION................................................................................................................................................... 47
5.1 Unpack checking .......................................................................................................................................47
5.2 Mechanical installation...............................................................................................................................47
5.3 Electrical installation ..................................................................................................................................48
External Protective Devices ...................................................................................................................48

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5.4 Connection of Power Cables .....................................................................................................................48
Recommended cross-sectional areas for power cables .......................................................................49
Power cable connector requirements....................................................................................................50
Recommended input front-end and output back-end circuit breakers.................................................51
5.5 Power cable connection.............................................................................................................................51
5.6 Battery connection.....................................................................................................................................53
5.7 Online UPS Modules Replacement............................................................................................................54
5.8 UPS parallel Installation .............................................................................................................................55
Cabinet installation.................................................................................................................................55
Parallel cable installation........................................................................................................................55
LBS installation (Load Bus Synchronisation) .........................................................................................56
5.9 Comunication...............................................................................................¡Error! Marcador no definido.
CAN communication port definition.......................................................................................................58
Definición del puerto de comunicación RS485......................................................................................58
BAT_T communication port definition....................................................................................................59
REPO instruction....................................................................................................................................59
6OPTIONS............................................................................................................................................................. 61
6.1 SNMP card.................................................................................................................................................61
7TROUBLESHOOTING.........................................................................................................................................62
7.1 Problems and Solution ZGR SCALABLE 60 300 KVA............................................................................62
7.2 Recommended spare parts........................................................................................................................63
8MAINTENANCE...................................................................................................................................................64
8.1 Battery maintenance ..................................................................................................................................65
9TECHNICAL SPECIFICATIONS ..........................................................................................................................66
10 STANDARDS.......................................................................................................................................................68
11 WARRANTY ........................................................................................................................................................69
© 2020, ZIGOR
Reservados todos los derechos. No está permitida la reproducción total o parcial de este Manual de Operación, ni su
transmisión de ninguna forma o por cualquier medio, ya sea electrónico o mecánico, por fotocopia, registro u otro
procedimiento de almacenamiento o recuperación de información sin permiso del editor.
El contenido de este manual es exacto en el momento en que se procede a su impresión. Pero, con la intención de cumplir
con el compromiso de una política de continuos desarrollos y mejoras, el fabricante se reserva el derecho de cambiar las
especificaciones del producto, su funcionamiento, o los contenidos del Manual de Operación sin previo aviso.

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1PRECAUTIONS
1.1 General precautions
For your own safety and that of the unit, you must read and understand the instructions contained in this
document before starting work.
Keep these instructions in a place accessible to all the personnel who work with the unit so that they can be
consulted.
Only expert and duly authorised personnel may operate our units.
Danger warnings. When handling or accessing the interior of the ZGR SCALABLE 60 300 KVA,
please remember that some parts may be live. Pay special attention to soldering points, printed
circuits, connecting terminals, relay contacts, etc. Before opening the equipment, disconnect the
voltage of all poles (both alternating and direct) and wait at least 5 minutes for the internal condensers
to discharge.
Arbitrary modifications are forbidden. The unit must not be subjected to any modification regarding its
construction or safety without express consent. Any modification will free ZIGOR of any responsibility
for any damage caused as a result of the modification. In particular, all repair work, soldering of printed circuit
boards and replacing of components, modules and printed circuit boards, without the express authorisation of
ZIGOR, is forbidden. Should spare parts be used, only ZIGOR original parts shall be utilised.
Use the unit for the purpose for which it was designed. The system supplied must be used only for the
purpose for which it was designed. Any other use is strictly forbidden. ZIGOR cannot accept responsibility for any
damage that might result from its use for any other purpose. In such cases, the user shall assume exclusive
responsibility for any risk. The use for which the unit was designed is defined in the documentation. The system
shall be exposed only to admissible environmental conditions. These are defined in the technical details provided
for the equipment.
ZIGOR accepts no responsibility for any inadequate, negligent or incorrect installation of the equipment.
Please follow the indications set out below to operate under conditions of complete safety:
•There exists dangerous voltage and high temperature inside the UPS. During the installation, operation
and maintenance, please abide the local safety instructions and relative laws, otherwise it will result in
personnel injury or equipment damage.
•The System must be checked once the installation has been completed by a qualified technician and
before being put into operation. Should these indications not be adhered to, the warranty shall be
considered null and void.
•These units do not contain parts usable for other purposes by the user.
•Do not power up the device before a technician has checked it.
•Given the risk of electric shock or burns, do not try to open the device.
•The unit does not contain any user repairable or replaceable elements. In the case of any malfunction or
problems operating the unit, please contact ZIGOR.
•Do not place the system near power magnets as this might cause a malfunction.
•Do not block or cover the ventilation grills in the housing.
•The ZGR SCALABLE 60 300 KVA is designed in accordance with current Spanish legislation. Check
these regulations against those corresponding to the country in which the unit is to be installed and
against the most restrictive regulations of the electricity supplier.
•All user controls are accessible from the exterior.
•Work inside the cabinet should be undertaken only by qualified personnel who are familiar with the safety
WARNING
This supply equipment contains a lethal voltage. Comply with the instructions set out in this manual to avoid any
risk of electrical shock.

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measures to be applied and the specific technical characteristics of the unit.
•Even though all the safety systems are in place, before touching any working parts, you must check that
they are not live.
•Even with all safety systems, before touching any active point check that there is no voltage.
•This system has been designed for industrial use and not for domestic-commercial use.
•If any liquid is spilt accidentally on the System, disconnect this and consult ZIGOR personnel.
•During assembly work, start-up or maintenance, wear goggles to avoid any damage to your eyes due to
accidental electric arcing.
•Use only insulated tools.
•The unit must be protected against rain and excess humidity and installed in a clean atmosphere, without
inflammable liquids, gases or oxidising substances.
•The battery may pose a risk of electric shock or burns due to its high short circuit current.
•battery, for the liquid spilled from the battery is strongly poisonous and does
harmful to body!
•Please avoid short circuit between anode and cathode of battery, otherwise, it will cause spark or fire
•If the batteries lose electrolyte or are physically damaged, they must be placed in a container in resistant
to corrosive liquids (acids or alkaline according to the type of battery) and prepared in accordance with
local regulations.
•If the electrolyte comes into contact with the skin, the affected area must be washed immediately with
clean water.
•For the sake of human being safety, please well earth the UPS before starting it.
•Do not throw batteries into a fire as they may explode.
•The standard UPS output with internal batteries can be powered even when the UPS input is not
connected to the mains.
•Do not disconnect the input from the UPS and make sure the UPS is completely off before moving it or
reconfiguring the connection; otherwise, there is a risk of electric shock.
•Only authorized personnel should repair or install the batteries.
•Should you have any problems with the contents of this manual, you must ask ZIGOR for assistance.
1.2 Storage precautions
The store where the material is kept must protect the material from the elements, risk of flooding or contact with
water. Visually check that the warehouse location is adequate, reviewing the characteristics of the place (clean,
without leaks and with good ventilation); the floor must be smooth and prepared to bear the weight of the
equipment.
The material shall be protected from any risk of overheating due to exposure to direct sunlight or through
windows.
The recommended storage temperature of the UPS with internal battery is -20ºC to 55ºC and that of the reserve
model without internal battery is -40ºC to 70ºC. An increase of 10ºC can reduce battery life by 50%. The
recommended relative humidity is from 5% to 95%.
When the UPS or batteries are stored, it is recommended to connect them to the network for at least 12 hours
every 3 months to prevent the battery from draining excessively.
To avoid any risk of mechanical shock, do not stack the packages. These must be placed in accordance with the
silkscreen printed details on the boxes used for packaging.

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1.3 Environmental precautions
WARNING
Any failure to respect these precautions may render the product warranty null and void.
Dispose of the packaging in an ecological way: ZIGOR, based on the exceptions detailed
in the First Additional Provision of Law 11/1997 on commercial or industrial packaging,
informs that the final holder of the waste of used containers and packaging, as responsible
for them, you must deliver them in appropriate conditions for reuse, to an authorized
recuperator, recycler or re-valuer.
The subsets of the system are recyclable products and cannot be treated as household / municipal waste at
the end of its useful life.
To preserve the environment, manage them in accordance with current environmental regulations and
requirements in each country or community. In case of doubt, consult the manufacturer.
Correct product disposal: This electrical-electronic device (AEE) is marked with the symbol
of compliance with the European Directive 2012/19 / EU (WEEE) regarding used electrical
and electronic equipment (Waste electrical and electronic equipment WEEE, RD 110/2015).
The Directive provides the general framework valid throughout the European Union for the
removal and reuse of waste from EEE.
To dispose of this product and ensure its proper management, follow the current local
environmental legislation and regulations. In this way it will contribute to conserve the
environment.
The wheeled bin crossed out on the product, in the documentation or on its packaging, means that the
electrical-electronic devices and batteries must be collected separately at the end of their life cycle.
Before the deposit of the RAEE in their collection facilities, the batteries must be removed and deposited
separately from the rest of the RAEE for proper management, according to the current local legislation and
environmental regulations.
Never dispose of with household waste. In this way it will help preserve the environment.
These symbols are valid in the European Union and in those places where separate collection systems are
available.
Correct disposal of batteries: Used batteries are reusable consumer products and a recycling
process must be carried out.
Used batteries that do not go through the recycling process must be disposed of according to
the instructions regarding special waste, in accordance with the regulations and environmental
requirements in force in each country or community. This requirement applies in the European
Union and in those places where separate collection systems are available.
In case of doubt, consult the manufacturer.
In this way it will contribute to conserve the environment.

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1.4 Precautions on receiving the unit
Visually check that the warehouse location is adequate by checking its characteristics (clean, free of leaks with
good ventilation); the floor must be level and have sufficient load resistance for the equipment.
Checking the material
Do not lean the UPS when moving it out from the packaging.
On receiving the material, a visual inspection should be made in order to detect any anomalies that may have
occurred during transport.
List and check all the items indicated on the delivery note. Should any component be missing, notify the
forwarding agent within the established deadline.
Extract all parts from the packaging and examine the unit for any damage caused during transport.
Report any damage to the forwarding agent and ZlGOR.
Check that the material delivered corresponds to the delivery note. Check the manufacturer's label placed at the
rear or on one side of the unit.
Responsibility for the loss or damage of Products shall transfer to the Customer from the moment ZIGOR, places
these at his disposal in the place indicated by the Customer.
1.5 Precautions on the transportation of the unit
Please transport the UPS system only in the original package to protect against shock and impact.
1.6 Symbol Description
The safety symbols cited in this manual are shown in Table 1-1, which are used to inform readers of safety issues
that should be obeyed when installation, operation and maintenance.
SECURITY SYMBOL
INDICATION
Attention
Sensitive to electrostatic
discharge
Risk of electric shock
Table 1-1 Symbols meaning
From then on, the customer will have 24 hours to make any claim under guarantee for any anomaly in the
amount or quality of the products received, providing details of the material received in bad condition after
reporting this circumstance on the forwarding agent's delivery note on reception.
Should the customer not report any defect within 24 hours, it will be understood that he has accepted delivery
of the unit.

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2GENERAL DESCRIPTION
2.1 Introduction
ZGR SCALABLE 60 300 KVA is an intelligent, three-phase in Three-phase out, high frequency online UPS,
available in three specifications: 60, 150 and 300 kVA. This UPS enables you to easily increase power and
autonomy to meet the changing needs of the end user.
ZGR SCALABLE 60 300 KVA is the most advanced modular UPS that adopts the N+X redundancy. Thus, it can
flexibly increase the number of the UPS modules according to the load capacity which is convenient for flexible
allocation and gradually investment. This UPS has been specially designed for data centers and critical loads
offering maximum availability.
The MPW grows as demand for the activity increases, without the need to expand the physical volume of the
UPS, optimizing both the initial investment ZGR SCALABLE 60 300 KVA as well as the total costs of ownership.
The UPS can solve most of the power supply problems, such as blackout, over-voltage, under-voltage, voltage
sudden drop, oscillating of decreasing extent, high voltage pulse, voltage fluctuation, surge, inrush current,
harmonic distortion (THD), noise interference, frequency fluctuation, etc..
This UPS can be applied to different applications from computer device, automatic equipment, communication
system to industry equipment.
2.2 Main characteristics
•10k / 15k / 20k / 25k / 30k modules
•Centralized digital control
•Parallel redundancy N + X
•3-level IGBT technology levels of smart charging
•Power factor up to 1.0
•Efficiency to 95.5%
•Automatic charge current adjustment according to battery capacity connected.
•Configurable battery voltage (300 - 600 Vdc)
•Low harmonic distortion THDi
•High MTBF and MTTR
•
•Large LCD touch screen
•Emergency Power Off (EPO)
•Grid Backup function
•Optional Accessories available such as Isolation transformer, distribution Panel, SNMP Card, Relay
Contact Board, etc...
2.3 Construction of ZGR SCALABLE 60 –300 KVA
Below are the different views of the ZGR SCALABLE 60 300 KVA in all its formats and available powers (Fig.
2-1 to Fig. 2-11):

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Fig. 2-1 Front view of ZGR
SCALABLE 30-60 kVA
Fig. 2-2 Side view of ZGR SCALABLE
30-60 kVA
Fig. 2-3 Rear view of ZGR SCALABLE
30-60 kVA
Fig. 2-4 Front view of ZGR SCALABLE 30-60 kVA (redundant power module and bypass module are optional)
Fig. 2-5 Front view of ZGR SCALABLE 40-120 kVA
(redundant power module and bypass module are
optional)
Fig. 2-6 Front view of ZGR SCALABLE 50-150 kVA

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Fig. 2-7 Front view of ZGR
SCALABLE 90-300 kVA
Fig. 2-8 Side view of ZGR SCALABLE
90-300 kVA
Fig. 2-9 Rear view of ZGR SCALABLE
90-300 kVA
Fig. 2-10 Front view of ZGR SCALABLE 90-270 kVA
(Redundant power module and bypass module are
optional)
Fig. 2-11 Front view of ZGR SCALABLE 100-300 kVA
The elements that compose the ZGR SCALABLE 60 300 KVA are:
1. LCD panel: Display UPS data and status
2. Power module

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3. Bypass module
4. Control unit
5. Mains switch
6. Bypass switch
7. Maintenance switch
8. Output switch
9. Intelligent Slot (SNMP card/ Relay card)
10. Mains-A input copper bar
11. Mains-B input copper bar
12. Mains-C input copper bar
13. Bypass-A input copper bar: Wiring must be used when mains-bypass separation
14. Bypass-B input copper bar: Wiring must be used when mains-bypass separation
15. Bypass-C input copper bar: Wiring must be used when mains-bypass separation
16. Input neutral copper bar
17. Output neutral copper bar
18. Ground copper bar
19. Battery positive copper bar
20. Battery neutral copper bar
21. Battery negative copper bar
22. Output-A input copper bar
23. Output-B input copper bar
24. Output-C input copper bar
25. Phase A mains-bypass common input connect copper bar
26. Phase B mains-bypass common input connect copper bar
•Control unit
Fig. 2-12 Control unit
The elements that compose the control unit (Fig. 2-12) are:
1. ECU1/2: Centralized control unit
2. Dry-contact unit

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3. Monitor unit
4. Intelligent slot
•ECU unit
Fig. 2-13 ECU unit
The elements that compose the ECU unit (Fig. 2-13) are:
1. PARALLEL port
2. LBS port
3. LED
•Dry-contact unit
Fig. 2-14 Dry contact unit
The elements that compose the Dry contact unit (Fig. 2-14) are:
1. EPO port: NO-12V: normally open port; NC-12V: normally close port;
2. SWITCH STATUS: OUT-0V: output breaker auxiliary contact signal port; MT-0V: maintenance
breaker auxiliary contact signal port; BP-0V: bypass breaker auxiliary contact signal port; BAT-
0V: battery breaker auxiliary contact signal port;
3. The other port: BTG-0V: battery grounding detect signal input port; DRV-0V: battery breaker
driver signal output port; SPD-0V: SPD detect signal input port; GEN-0V: generator detect
signal input port;
4. BP_FEEDBACK: PIN1_NC, PIN2_NO, PIN4_common
5. Optional dry contacts: 6 ports, can optional by LCD.

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•Monitor unit
Fig. 2-15 Monitor unit
The elements that compose the monitor unit (Fig. 2-15) are:
1. BAT_T: NTC temperature sensor port
2. R-CAN: CAN communication resistor adjust
3. USB port: for software update and history download
4. RS232 port: for communication
5. LCD port
6. CAN port: BMS port
7. FE: Net port (reserve)
8. RS485 port: for communication
9. RS485 port: for communication
10. BAT_T: battery temperature sensor port (RS485)
•UPS module appearance
Fig. 2-16 Front view of the UPS module
Fig. 2-17 Side view of the UPS module
The UPS module has accessible the following elements (Fig. 2-16):
1. Module fixed screw
2. LED
3. Module switch
4. Fan

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3OPERATION OF ZGR SCALABLE 60 300 KVA
3.1 Operation Modes
ZGR SCALABLE 60 300 KVA is a double-conversion on-line UPS that may operate in the following alternative
modes:
Normal mode
The rectifier/charger derives power from the AC mains and supplies DC power to the inverter while floating and
boosting charge the battery simultaneously. Then, the inverter converts the DC power to AC and supplies the load
(Fig. 3-1).
Fig. 3-1 Normal mode
Battery mode (Stored Energy Mode)
If the AC mains input power fails, the inverter, which obtains power from the battery, supplies the critical AC load.
There is no power interruption to the critical load. The UPS will automatically return to Normal Mode when AC grid
recovers (Fig. 3-2).
Fig. 3-2 Battery mode

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Bypass mode
If the inverter is out of order, or if overload occurs, the static bypass will be activated to transfer the load from the
inverter supply to bypass supply without interruption to the critical load (Fig. 3-3).
In the event that the inverter output is not synchronized with the bypass AC source, the static switch will perform
a transfer of the load from the inverter to the bypass with power interruption to the critical AC load. This is to avoid
paralleling of unsynchronized AC sources.
This interruption is programmable but typically set to be less than an electrical cycle e.g. less than 15 ms (50 Hz)
or less than 13,33 ms (60 Hz).
Fig. 3-3 Bypass mode
ECO Mode
When the UPS is at AC Mode and the requirement to the load is not critical, the UPS can be set at ECO mode in
order to increase the efficiency of the power supplied (Fig. 3-4). At ECO mode, the UPS works at Line-interactive
mode, so the UPS will transfer to bypass supply. When the AC is out of set window, the UPS will transfer from
bypass to Inverter and supplies power from the battery, and then the LCD shows all related information on the
screen.
Fig. 3-4 ECO mode

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Maintenance mode (Manual Bypass)
A manual bypass switch is available to ensure continuity of supply to the critical load when the UPS is out of order
or in repair. This manual bypass switch is fitted for all UPS modules and bears for equivalent rated load (Fig. 3-5).
Fig. 3-5 Maintenance mode
3.2 Turn on/off UPS
Restart procedure
1.
2. Open door of the UPS to access to the main power switches. During this procedure the output terminals
will become alive.
3. and fix with screws and the module_in switch at the on status.
4. When AC MAINS input voltage within the range, and the rectifiers of the UPS will be started up in 30
up.
5. Switch ON output switch.
If the rectifier of the module does not start-up, the green LED will flash, bypass module green LED will light
on, the power module green LED will flash. when UPS turn to inverter mode power module and display
panel green LED will light on.
No matter the UPS is operated normally or not, the LCD display will indicate current status.
WARNING
Make sure grounding is properly done.
WARNING
Check to see if the load is safely connected with the output of the UPS. If the load is not ready to receive power
from the UPS, make sure that it is safely isolated from the UPS output terminals.

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Test procedure
1. Switch off the MAINS to simulate utility failure, the rectifier will turn off and the battery should feed the
inverter without interruption. At this time, the LEDs of battery should be turned on.
2. Switch on the MAINS to simulate utility recovery, the rectifier will restart automatically after 20 seconds
and the inverter will supply to the load. It is suggested to use Dummy loads for testing. The UPS can be
loaded up to its maximum capacity during load test.
Maintenance bypass
To supply the load via Mains, you may simply active the internal mechanical bypass switch.
3.2.3.1 Switch to mechanical bypass
1. Open the cover of maintenance switch, the UPS turns to bypass mode automatically.
2. Turn on MAINTANCE breaker;
3. Switch OFF BATTERY breaker;
4. Switch OFF MAINS breaker;
5. Switch OFF BYPASS breaker;
6. Switch OFF OUTPUT breaker;
At this time the bypass source will supply to the load through the MAINTENANCE breaker.
3.2.3.2 Switch to normal operation (from mechanical bypass)
1. Open the front and rear doors of the UPS to be easily access to the main power switches
2. Switch ON the output switch;
3. Switch ON the bypass and mains switch;
4. Switch ON the battery breaker;
The UPS powers from the static bypass instead of the maintenance bypass.
WARNING
The UPS is operating normally. It may take 60 seconds to boost up the system and perform self-test
completely.
WARNING
The load is not protected by the UPS when the internal mechanical bypass system is active and the power is
not conditioned.
WARNING
If the UPS is running normally and can be controlled through the display, carry out steps 1 to 6; otherwise,
jump to Step 5.
WARNING
Never attempt to switch the UPS back to normal operation until you have verified that there are no internal UPS
faults.

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5. Switch OFF the maintenance bypass switch, then the output is supplied by the bypass of the modules.
6. Put on the maintenance switch cover (1.2m cabinet).
The rectifier will operate normally after 30 seconds. If the inverter works normally, the system will be transferred
from bypass mode to normal mode.
Cold start procedure
1. Switch on the battery switch.
The battery will feed the Auxiliary power board.
2. Switch on the Output switch
3. Trigger the cold start button of the bypass module (Fig. 3-6). When battery normal, rectifier starts
operation, 30 s later, inverter starts and operates and the green LED will light on.
Fig. 3-6 Cold Start
Shut down procedure
1. Press the INVERTER OFF key on the LCD display.
2. Switch OFF the BATTERY breaker.
3. Open the UPS door to easily access to the main power switch.
4. Switch OFF the input switch.
5. Switch OFF the OUTPUT switch. The UPS shuts down.
WARNING
Follow these procedures when the input AC Utility Failure, but battery is normal.
WARNING
Please press the close start button after 30 seconds until closing the battery switch.
WARNING
This procedure should be followed to completely shut down the UPS and the LOAD. After all power switches,
isolators and circuit breakers are opened, there will be no output.

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Start-up procedure for parallel system
1. Connect parallel cable, input/output cable, and battery cable well; modify the parallel board jumpers
correctly.
2. Measure the positive and negative battery pack voltage. Battery switch is opened temporarily.
3. Switch ON the output switch at the front door.
4. According to the start-up procedure for single unit, set the operation mode of each UPS: single mode is
changed to parallel mode; set the parallel number for each UPS; up to 6 units can be parallel; set the ID of
each cabinet, the ID of each unit must be different.
5. Switch ON the input switch. Close the external input switch and start from mains.
6. After start from mains, check the LCD interface of each UPS to see if the ID, VA is the same with the
actual values.
7. Switch ON the external battery switch of each UPS. Check if the charging current displayed in LCD is
normal.
WARNING
Wait for about 5 minutes for the internal DC bus bar capacitors to be completely discharged.
NOTE
The UPS cannot be parallel until each single unit is normal.