Uninterruptible Power Supply LV 5KL User manual

3/3 208V 5KL/5KL DUAL/10KL/10KL DUAL
3/3 400V 10KL/10KL DUAL/15KL/15KL
DUAL/20KL/20KL DUAL
Rack/Tower Online UPS
Uninterruptible Power Supply System
Version: 1.0
User Manual

Please comply with all warnings and operating
instructions in this manual. This equipment
should only be installed, serviced, and
maintained by qualified personnel. Do not
operate this unit before reading through all
safety information and operating instructions
carefully.
Disclaimer
We assumes no responsibility or liability for loss or damages, whether direct, indirect,
consequential or incidental, which might arise out of the use of such information. The use of
any such information will be entirely at the user’s risk. Information in this manual is subject to
change without notice. We make no commitment to update or keep current the information in
this manual. If you find information in this manual that is incorrect, misleading, or incomplete,
we would appreciate your comments and suggestions.

Table of Contents
1. SAFETYAND EMC INSTRUCTIONS...........................................................................................................................1
1-1.TRANSPORTATION AND STORAGE..................................................................................................................................1
1-2. PREPARATION................................................................................................................................................................ 1
1-3. INSTALLATION............................................................................................................................................................... 1
1-4. CONNECTION WARNINGS ...................................................................................................................................2
1-5. OPERATION ................................................................................................................................................................... 3
1-6. STANDARDS..................................................................................................................................................................3
2. INSTALLATION AND OPERATION .............................................................................................................................4
2-1. UNPACKING AND INSPECTION .......................................................................................................................................4
2-2. FRONTAND WIRING TERMINAL VIEW........................................................................................................................... 5
2-3. SINGLE UPS INSTALLATION..........................................................................................................................................6
2-4. UPS INSTALLATION FOR PARALLEL SYSTEM................................................................................................................. 7
2-5. SOFTWARE INSTALLATION............................................................................................................................................. 8
3. OPERATIONS ...................................................................................................................................................................9
3-1. BUTTON OPERATION..................................................................................................................................................... 9
3-2. LED INDICATORS AND LCD PANEL .............................................................................................................................. 9
3-3.AUDIBLE ALARM ........................................................................................................................................................ 11
3-4. SINGLE UPS OPERATION ............................................................................................................................................ 11
3-5. PARALLEL OPERATION ................................................................................................................................................ 14
3-6.ABBREVIATION MEANING IN LCD DISPLAY................................................................................................................ 16
3-7. LCD SETTING............................................................................................................................................................. 16
3-8. LCD MAIN INTERFACE............................................................................................................................................... 28
3-9. FAULT CODE............................................................................................................................................................... 29
3-10. WARNING INDICATOR............................................................................................................................................... 30
3-11. WARNING CODE ....................................................................................................................................................... 30
4. TROUBLE SHOOTING ................................................................................................................................................. 31
5. STORAGE AND MAINTENANCE............................................................................................................................... 33
5-1. STORAGE .................................................................................................................................................................... 33
5-2. MAINTENANCE ........................................................................................................................................................... 33
6. SPECIFICATIONS FOR 400V....................................................................................................................................... 34

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1. Safety and EMC instructions
All safety instructions in this document must be read, understood and followed.
1-1. Transportation and Storage
Please transport the UPS system only in the original packaging to protect against shock and
damage.
The UPS must be stored in the room where the temperature is well regulated. Ambient
temperature should not exceed 40°C.
1-2. Preparation
Condensation may from if the UPS system is moved from cold to warm environment immediately.
The UPS system must be absolutely dry before being installed. Please allow at least two hours for
the UPS system to acclimate the environment.
Do not install the UPS system near water or in moist environments.
Do not install the UPS system where it would be exposed to direct sunlight or nearby heat
source.
Do not block ventilation holes on the UPS housing.
1-3. Installation
Do not connect appliances or devices which would overload the UPS (e.g. big motor-type
equipment)) to the UPS output terminal.
Place cables in such a way that no one can step on or trip over them.
Do not block air vents on the housing of the UPS. Ensure proper unit spacing of ventilation.
UPS equipped with grounding terminal, in the final installation phase, connect grounding/
earthing wire to the external UPS battery cabinets or appropriate grounding terminals.
The UPS can be installed only by qualified maintenance personnel.
An appropriate disconnect device such as short-circuit backup protection should be incorporated
during installation.
An integral emergency shutoff switch which prevents additional load from the UPS in any mode
of operation should be implemented during the installation.
Secure the grounding/earthing wire before connecting to any live wire terminal.
Installation and Wiring must be in accordance with the local electrical laws and regulations.

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1-4. Connection Warnings
•There is no standard backfeed protection inside of the UPS. However, there are relays on the Input to
cut off line voltage and while the neutral is still connect to UPS.
Main
Input
Input Rly
UPS
L1
L2
L3
N
Main
Input
InputRly
UPS
L1
L2
L3
N
Bypass
Input
InputRly
L1
L2
L3
N
Input relay diagram Input relay diagram for dual-input model
•This UPS should be connected with TN grounding/earthing system.
•The power input for this unit must be three-phase rated in accordance with the equipment nameplate. It
also must be suitably grounded.
•Use of this equipment in medical instrument of any life-sustaining equipment where failure of this
equipment can reasonably be expected to cause the failure of the life-sustaining equipment or to
significantly affect its safety or effectiveness is not recommended. Do not use this equipment in the
presence of a flammable mixture with air, oxygen or nitrous oxide.
•Connect grounding terminal of UPS to a grounding electrode conductor.
•In accordance with safety standard EN-IEC 62040-1, installation has to be provided with a《Backfeed
Protection》system, as for example a contactor, which will prevent the appearance of voltage or
dangerous energy in the input mains during a mains fault (see figure 24 and respect the wiring diagram
of «Backfeed Protection» depending if the equipment is with signal or three phase input).
There can be no derivation in the line that goes from the «Backfeed Protection» to the UPS, as
the standard safety would be infringed.
•Warning labels should be placed on all primary power switches installed in places away from the unit to
alert the electrical maintenance personnel of the presence of a UPS in the circuit. The label will bear the
following or an equivalent text:
Before working on this circuit
-Isolate Uninterruptible Power Supply (UPS)
-Then check for Hazardous Voltage between all terminals including the
protected earth
Risk of Voltage Backfeed
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY

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1-5. Operation
Do not disconnect the grounding/earthing conductor cable on the UPS or the building wiring
terminals under any circumstance.
The UPS system features its own, internal current source (batteries). The UPS output sockets or
output terminal blocks may be electrically live even if the UPS system is not connected to the building
mains/live wires. (only for standard models)
In order to fully disconnect the UPS system, first press the “OFF” button and then disconnect the
mains/live wires.
Ensure that no liquid or other foreign objects can enter into the UPS system.
The UPS can be operated by any individuals with no previous experience.
1-6. Standards
* Safety
IEC/EN 62040-1
* EMI
Conducted Emission...............................:IEC/EN 62040-2
Category C3
Radiated Emission..................................:IEC/EN 62040-2
Category C3
*EMS
ESD.........................................................:IEC/EN 61000-4-2
Level 4
RS........................................................ ...:IEC/EN 61000-4-3
Level 3
EFT......................................................... :IEC/EN 61000-4-4
Level 4
SURGE................................................... :IEC/EN 61000-4-5
Level 4
CS........................................................... :IEC/EN 61000-4-6
Level 3
Power-frequency Magnetic field.............. :IEC/EN 61000-4-8
Level 4
Low Frequency Signals............................:IEC/EN 61000-2-2
Warning: This is a product for commercial and industrial application in the
second environment-installation restrictions or additional measures may be
needed to prevent disturbances.

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2. Installation and Operation
These series came with two VAC systems: 208V and 400V. Please refer following table.
VAC System
Model
Type
208V
LV 5KL/10KL
Long-run
model
LV 5KL/10KL DUAL
400V
HV 10KL/15KL/20KL
HV 10KL/15KL/20KL DUAL
We also offer optional parallel function for both models upon request. The UPS with parallel function is called
the “Parallel model”. We have detail installation and operation procedure of the Parallel Model in the
following chapter.
2-1. Unpacking and Inspection
Unpack the package and check the package contents. The shipping package should contain:
● One UPS
●One user manual
● One monitoring software CD
●One RS-232 cable (option)
●One USB cable
●One parallel cable (only available for parallel model)
●One shared current cable (only available for parallel model)
NOTE: Before the installation, please inspect the unit. Be sure that there is no physical damage to the unit.
Do not turn on the unit and notify the carrier and dealer immediately if there is any damage or missing parts
and accessories. Please keep the original packaging for future use. It is recommended to keep each
equipment and battery set in their original packaging because they have been designed to provide maximum
protection during transportation and storage.

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2-2. Front and Wiring Terminal View
Diagram 1:Front Panel
Diagram 2: Rear Panel and Input/Output terminal
1. USB communication port
2. External Maintain Bypass Switch connector (EMBS Connector)
3. Emergency power off function connector (EPO connector)
4. Share current port (only available for parallel model)
5. Parallel port (only available for parallel model)
6. Intelligent slot
7. External battery connector/terminal (Only available for long-run model)
8. Line input circuit breaker/switch
9. Line input terminal
10. Output terminal
11. Bypass input terminal
12. Input grounding terminal
13. Output grounding terminal

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2-3. Single UPS Installation
Installation and wiring must be carried out in accordance with the local electric laws and regulations by
trained professionals.
1) Make sure that the mains wire and breakers of the building are rated for the capacity of the UPS to
prevent electric shock or risk of fire.
NOTE: Do not use the wall receptacle as the input power source for the UPS, as its rated current is less than
the UPS’s maximum input current. The receptacle may be damaged and destroyed.
2) Switch off the mains switch in the building before installation.
3) Turn off all the connected devices before connecting to the UPS.
4) Prepare wires based on the following table:
Model
Wiring spec (AWG)
Input(Ph)
Output(Ph)
Neutral
Battery
Ground
HV 10KL/ LV5KL
14
14
10
8
8
HV 15KL
12
12
10
8
8
LV 10KL/ LV 10KL DUAL
HV 20KL/ HV 20KL DUAL
10
10
6
8
6
NOTE 1: The cable for HV 10KL, LV 5KL, 10KL DUAL and LV 5KL DUAL should be able to withstand
over 20A current. It is recommended to use AWG 14 or thicker wire for Phase and AWG10 or thicker
wire for Neutral for safety and efficiency.
NOTE 2: The cable for HV 15KL and HV15KL DUAL should be able to withstand over 30A current. It is
recommended to use AWG 12 or thicker wire for Phase and AWG10 or thicker wire for Neutral for
safety and efficiency.
NOTE 3: The cable for HV 20KL, HV 20KL DUAL, LV 10KL and LV 10KL DUAL should be able to
withstand over 40A current. It is recommended to use AWG10 or thicker wire for Phase and AWG 6 or
thicker wire for Neutral for safety and efficiency.
NOTE 4: The selections for color of wires should be followed by the local electrical laws and
regulations.
5) Remove the terminal block cover at the rear panel of UPS. Then connect the wires according to the
following terminal block diagrams: (Connect the grounding/earthing wire first when making wire
connections. Disconnect the earth wire after disconnect the power wire.)
Terminal block wiring diagram

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PBAT
NBAT
TO UPS BAT+
TO UPS BAT N
TO UPS BAT-
Battery wire connect schematic
NOTE 1: Make sure that the wires are connected tightly with the terminals.
NOTE 2: Please install the output breaker between the output terminal and the load, and the breaker
should be qualified with leakage current protective function if necessary.
6) Put the terminal block cover back at the rear panel of the UPS.
Warning: (Only for standard model)
● Make sure the UPS is not turn on before the installation. The UPS should not be turned on during wiring
connection.
● Do not attempt to modify the standard model into the long-run model. Particularly, do not try to connect
the standard internal battery to the external battery. The battery type and voltage may be different, if
you connect them together, it maybe cause the hazard of electric shock or fire!
Warning: (Only for long-run model)
● Make sure a DC breaker or other protective device between UPS and the external battery pack is
installed. If not, please install it carefully. Switch off the battery breaker before installation.
NOTE: Set the battery pack breaker in “OFF” position and then install the battery pack.
● Pay highly attention to the rated battery voltage marked on the rear panel. If you want to change the
numbers of the battery pack, please make sure you modify the setting simultaneously. The Connection
with wrong battery voltage may cause permanent damage of the UPS. Make sure the voltage of the
battery pack is correct.
● Pay highly attention to the polarity marking on external battery terminal block. And make sure the
correct battery polarity is connected. Wrong connection may cause permanent damage of the UPS.
● Make sure the protective earth ground wiring is correct. The wire current spec, color, position,
connection and conductance reliability should be checked carefully.
● Make sure the utility input & output wire is correct. The wire current spec, color, position, connection and
conductance reliability should be checked carefully. Make sure the L/N side is correct, not reverse or
short-circuited.
2-4. UPS Installation for Parallel System
If the UPS is only available for single operation, you may skip this section to the next.
1) Install and wires the UPS according to the section 2-3.
2) Connect the output wires of each UPS to an output breaker.
3) Connect all output breakers to a major output breaker. Then this major output breaker will directly
connect to the loads.
4) Common battery packs or independent battery packs are allowed.

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5) Refer to the following wiring diagram:
Wiring diagram of parallel system
2-5. Software Installation
For optimal computer system protection, install UPS monitoring software to configure UPS shutdown
operation.

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3. Operations
3-1. Button Operation
Button
Function
ON/Enter Button
Turn on the UPS: Press and hold the button more than 0.5s to turn on the UPS.
Enter Key: Press this button to confirm the selection in the setting menu.
OFF/ESC Button
Turn off the UPS: Press and hold the button more than 0.5s to turn off the UPS.
Esc key: Press this button to return to last item in the setting menu.
Test/Up Button
Battery test: Press and hold the button more than 0.5s to test the battery while
in AC mode and CVCF* mode.
UP key: Press this button to display next selection in the setting menu.
Mute/Down Button
Mute the alarm: Press and hold the button more than 0.5s to mute the buzzer.
Please refer to section 3-4-10 for details.
Down key: Press this button to display previous selection in the setting menu.
Test/Up +
Mute/Down Button
Press and hold the two buttons simultaneous more than 1s to enter/escape the
setting menu.
OFF/ESC +
Mute/Down Button
Press and hold the two buttons simultaneous more than 1s to select LCD rack
display or tower display.
* CVCF means Constant Voltage and Constant Frequency.
3-2. LED Indicators and LCD Panel
LED Indicators:
There are 4 LEDs on front panel to show the UPS working status:
Mode LED
Bypass
Line
Battery
Fault
UPS On
●
●
●
●
No Output mode
○
○
○
○
Bypass mode
●
○
○
○
AC mode
○
●
○
○
Battery mode
○
○
●
○
CVCF mode
○
●
○
○
Battery Test
●
●
●
○
ECO mode
●
●
○
○
Fault
○
○
○
●
Note: ●means LED is lighting, and ○means LED is faded.
LCD panel
LED indicators

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LCD Panel:
Rack Display Tower Display
Display
Function
Backup time information
Indicates the battery discharge time in numbers
H: hours, M: minutes, S: seconds
Fault information
Indicates that the warning and fault occurs.
Indicates the fault codes, and the codes are listed in details in section 3-9.
Mute operation
Indicates that the UPS alarm is disabled.
Input/Output & Battery voltage information
Indicates the output voltage, frequency or battery voltage.
Vac: output voltage, Vdc: battery voltage, Hz: frequency
Load information
Indicates the load level by 0-25%, 26-50%, 51-75%, and 76-100%.
Indicates overload.
Indicates the load or the output is short.
Mode operation information
Indicates the battery is working.
Indicates the bypass circuit is working.
Indicates the ECO mode is enabled.
Indicates the output is working.
Battery information
Indicates the battery capacity by 0-25%, 26-50%, 51-75%, and 76-100%.
Indicates low battery level and low battery voltage.
Indicates there is something wrong with battery.
Load info
UPS status
Backup time info
Input/output
and Battery info
Warning & Fault info/
Setting operation
Battery info
Battery info
Load info
Input/output
and Battery
info
UPS status
Warning
& Fault info/ Setting
operation
Backup
time info

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3-3. Audible Alarm
Description
Buzzer status
Muted
UPS status
Bypass mode
Beeping once every 2 minutes
Yes
Battery mode
Beeping once every 4 seconds
Fault mode
Beeping continuously
Warning
Overload
Beeping twice every second
No
Others
Beeping once every second
Fault
All
Beeping continuously
Yes
3-4. Single UPS Operation
1. Turn on the UPS with utility power (in AC mode)
1) After power supply is connected correctly, set the breaker of the battery pack at “ON”position (this
step only necessary for long-run model). Then set the line input breaker at “ON”position. At this
time the fan is running and the UPS enter to power on mode for initialization, several seconds later,
UPS operates in Bypass mode and supplies power to the load via the bypass.
NOTE: When UPS is in Bypass mode, the output voltage will directly power from utility after you
switch on the input breaker. In Bypass mode, the load is not protected by the UPS. To protect your
precious devices, you should turn on the UPS. Refer to next step.
2) Press and hold the “ON” button for 0.5s to turn on the UPS and the buzzer will beep once.
3) A few seconds later, the UPS will enter to AC mode. If the utility is abnormal, the UPS will operate in
Battery mode without interruption.
NOTE: When the UPS running out battery, it will shut down automatically in Battery mode. When the
utility is restored, the UPS will auto restart in AC mode.
2. Turn on the UPS without utility power supply (in Battery mode)
1) Make sure that the two strings of batteries are connected correctly at UPS’s ”+,GND,-”terminals
and the breaker of the battery pack is at “ON”position (only for long-run model).
2) Press the “ON” button to set up the power supply for the UPS. UPS will enter to power on mode.
After initialization, UPS will enter to No Output mode, then press and hold the “ON” button for 0.5s
to turn on the UPS, and the buzzer will beep once.
3) A few seconds later, the UPS will be turned on and enter to Battery mode.
4. Connect devices to UPS
After the UPS is turned on, you can connect devices to the UPS.
1) Turn on the UPS first and then switch on the devices one by one. The LCD panel will display total
load level.
2) If it is necessary to connect the inductive loads such as a printer, the in-rush current should be
calculated carefully to see if it meets the capacity of the UPS, because the power consumption of
this kind of loads is too big.
3) If the UPS is overload, the buzzer will beep twice every second.
4) When the UPS is overload, please remove some loads immediately. It is recommended to have the
total loads connected to the UPS less than 80% of its nominal power capacity to prevent overload
for system safety.
5) If the overload time is over acceptable time listed in spec at AC mode, the UPS will automatically
transfer to Bypass mode. After the overload is removed, it will return to AC mode. If the overload

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time is over acceptable time listed in spec at Battery mode, the UPS will become fault status. At this
time, if bypass is enabled, the UPS will power to the load via bypass. If bypass function is disabled
or the input power is not within bypass acceptable range, it will cut off output directly.
5. Charge the batteries
1) After the UPS is connected to the utility power, the charger will charge the batteries automatically
except in battery mode or during battery self-test or overload or battery high voltage.
2) Suggest to charge batteries at least 10 hours before use. Otherwise, the backup time may be
shorter than expected.
6. Battery mode operation
1) When the UPS is in Battery mode, the buzzer will sound according to different battery capacity. If
the battery capacity is more than 25%, the buzzer will beep once every 4 seconds. If the battery
voltage drops to the alarm level, the buzzer will beep quickly (once every sec) to remind users that
the battery is at low level and the UPS will shut down automatically soon. Users could switch off
some non-critical loads to disable the shutdown alarm and prolong the backup time. If there is no
more load to be switched off at that time, you have to shut down all loads as soon as possible to
protect the devices or save data. Otherwise, there is a risk of data loss or load failure.
2) In Battery mode, if buzzer sound annoy, users can press the Mute button to disable the buzzer.
3) The backup time of the long-run model depends on the external battery capacity.
4) The backup time may vary from different environment temperature and load type.
5) When setting backup time for 16.5 hours (default value from LCD menu), after discharging 16.5
hours, UPS will shut down automatically to protect the battery. This battery discharge protection
can be enabled or disabled through LCD panel control. (Refer to 3-7 LCD setting section)
7. Test the batteries
1) If you need to check the battery status when the UPS is running in AC mode/CVCF mode, you could
press the “Test”button to let the UPS do battery self-test.
2) Users also can set battery self-test through monitoring software.
8. Turn off the UPS with utility power supply in AC mode
1) Turn off the inverter of the UPS by pressing “OFF” button for at least 0.5s, and then the buzzer will
beep once. The UPS will turn into Bypass mode.
NOTE 1: If the UPS has been set to enable the bypass output, it will bypass voltage from utility
power to output terminal even though you have turned off the UPS (inverter).
NOTE 2: After turning off the UPS, please be aware that the UPS is working at Bypass mode and
there is risk of power loss for connected devices.
2) In Bypass mode, output voltage of the UPS is still present. In order to cut off the output, switch off
the line input breaker(for dual input unit, also switch off the bypass line breaker). A few seconds
later, there is no display shown on the display panel and UPS is complete off.
9. Turn off the UPS without utility power supply in Battery mode
1) Turn off the UPS by pressing “OFF” button for at least 0.5s, and then the buzzer will beep once.
2) Then UPS will cut off power to output and there is no display shown on the display panel.
10. Mute the buzzer
1) To mute the buzzer, please press the “Mute” button for at least 0.5s. If you press it again after the
buzzer is muted, the buzzing will beep again.
2) Some warning alarms can’t be muted unless the error is fixed. Please refer to section 3-3 for
details.
11. Operation in warning status
1) When Fault LED illuminates and the buzzer beeps once every second, it means that there are

13
problems for UPS operation. Users can get the warning indicator from LCD panel. Please check the
trouble shooting table in Chapter 4 for details.
2) Some warning alarms can’t be muted unless the error is fixed. Please refer to section 3-3 for
details.
12. Operation in Fault mode
1) When Fault LED illuminates and the buzzer beeps continuously, it means that there is a fatal error in
the UPS. Users can get the fault code from display panel. Please check the trouble shooting table
in Chapter 4 for details.
2) Please check the loads, wiring, ventilation, utility, battery and so on after the fault occurs. Don’t try
to turn on the UPS again before solving the issue. If the problems can’t be fixed, please contact the
distributor or service personnel immediately.
3) For emergency case, please cut off connection from utility, external battery, and output
immediately to avoid more risk or danger.
13. Operation in maintaining bypass mode
This operation is only available for professional or qualified technicians.
When the UPS needs to repair or service and then the load can’t be shut off, the UPS needs to turn to
maintenance mode.
1) Switch off the UPS.
2) Then, remove the cover of maintenance bypass switch on the panel.
3) Turn the maintenance switch to “BPS” position and turn off the UPS input breaker and output
breaker.
14. Operation in changing battery quantity
1) This operation should only be performed by maintenance personnel or qualified technicians.
2) Turn off the UPS. If the load cannot be shut off, you should remove the cover of maintenance bypass
switch on the panel and turn the maintenance switch to “BPS” position.
3) Switch off the line input breaker and external bypass input breaker (only for dual-input model). Then,
UPS will enter into “No Output mode”.
4) Connect communication cable to the UPS and a computer. Be sure to install communication tool first.
For this software tool, please check your local dealer for the details. Use the software to set up
battery quantity accordingly. Or use LCD setting interface to set the battery quantity directly, please
contact with the local after-sales service.
5) After settings are updated successfully, shut down the UPS with battery connected to save the
change parameter. Then, modify the connected battery pack numbers accordingly.
6) Switch on the utility power breaker and external bypass input breaker (only for dual-input model).
Then, the UPS will enter into bypass mode. If the UPS is in maintenance bypass mode, turn the
maintenance switch back to “UPS” position and then turn on the UPS.
NOTE: If you see warning code “01”, the UPS is not able to set up the battery quantity. Only in No
output mode, battery quantity can be modified.
15. Operation in setting charging current
1) This operation should only be performed by maintenance personnel or qualified technicians.
2) Connect communication cable to the UPS and a computer. Be sure to Be sure to install
communication tool first. For this software tool, please check your local dealer for the details. Use
the software to set up charging current accordingly. Or Use LCD setting interface to set charge

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current directly, please refer to chapter 3-7 interface 21.
3) After settings are updated successfully, the updated charging current will take effect immediately.
The UPS would need to be restarted to saving the setting.
16. Operation in setting charger quantity
1) This operation should only be performed by maintenance personnel or qualified technicians.
2) Turn off the UPS. If the load can not be cut off, you should remove the cover of maintenance bypass
switch on the panel and turn the maintenance switch to “BPS” position.
3) Switch off the line input breaker and UPS will enter into “No Output mode”.
4) Connect communication cable to the UPS and a computer. Be sure to Be sure to install
communication tool first. For this software tool, please check your local dealer for the details. Use
the software to set up charger quantity accordingly.
5) After settings have been successfully updated, restart the UPS with battery connected to save the
change. Then, modify the connected charger numbers accordingly.
6) Switch on the line input breaker and external bypass input breaker (only for dual-input model). Then,
the UPS will enter into Bypass mode. If the UPS is in maintenance bypass mode, turn the
maintenance switch to “UPS” position and then turn on the UPS.
NOTE: The charger quantity setting must coincide with actual number installed in the UPS. If the
setting quantity is more than actual installed quantity, the charging current will not meet the
specification.
3-5. Parallel Operation
1. Parallel system initial startup
Please make sure that all of the UPSs are parallel models and have the same configuration.
1) Turn on each UPS in AC mode respectively (Refer to section 3-4(1)). Then, measure the inverter
output voltage of each phase for each UPS to if the inverter voltage difference between actual
output and setting value is less than 1.5V(typical 1V) with multimeter. If the difference is more than
1.5V, please calibrate the voltage by configuring inverter voltage adjustment(Refer to Program
15,16 and 17,section 3-7) in LCD setting. If the voltage remains more than 1.5V after calibration,
please contact your local distributor or service center for help.
2) Calibrate the output voltage measurement by configuring output voltage calibration(Refer to
Program 18,19, and 20, section 3-7) in LCD setting to make sure the difference between real output
voltage and detected value of UPS is less than 1V.
3) Turn off each UPS (Refer to section 3-4(7.)). Then, follow the wiring procedure in section 2-4.
4) Remove the cover of parallel share current cable port on the UPS, connect each UPS one by one
with the parallel cable and share current cable, and then screw the cover back.
5) Turn on the parallel system in AC mode:
a) Turn on the line input breaker of each UPS (for dual input, also turn on bypass input breaker).
After all UPSs enter to bypass mode, measure the output voltage between two UPSs for the
same phase to make sure the phase sequence is correct. If these two voltage differences are
near to zero, that means all connections are met. Otherwise, please check if the wirings are
connected correctly.
b) Turn on the output breaker of each UPS.
c) Turn on each UPS in turns. After a while, the UPSs will enter to AC mode synchronously and
then, the parallel system is now complete.

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6) Turn on the parallel system in Battery mode:
a) Turn on the battery breaker (only available in long-run model) and output breaker of each
UPS.
b) Turn on any UPS. A few seconds later, the UPS will enter to battery mode.
c) Turn on another UPS. A few seconds later, the UPSs enter to Battery mode and add to the
parallel system.
d) If you have the third UPS, follow the same procedure of c). Then, the parallel system is
complete.
If more detail information is needed, please contact supplier or service center for parallel
operation instruction.
2. Add new units into the parallel system
1) You can not add new unit into the parallel system when whole system is running. You must cut off
the load and shutdown the system.
2) Make sure all of the UPS are the parallel models, and follow the wiring refer to section 2-4.
3) Install the new parallel system refers to the previous section.
3. Remove units from the parallel system
There are two methods to remove units from the parallel system:
First method:
1) Press the “OFF” key twice and each press should be last for more than 0.5s. Then, the UPS will enter
into Bypass mode or No Output mode without output.
2) Turn off the output breaker of this unit, and then turn off the input breaker of this unit.
3) After it shuts down, you can turn off the battery breaker (for long-run model) and remove the
parallel and share current cables. And then remove the unit from the parallel system.
Second method:
1) If the bypass is abnormal, you can not remove the UPS without interruption. You must cut off the
load and shut down the system first.
2) Make sure the bypass setting is enabled in each UPS and then turn off the running system. All UPSs
will transfer to Bypass mode. Remove all the maintenance bypass covers and set the maintenance
switches from “UPS” to “BPS” position. Turn off all the input breakers and battery breakers in
parallel system.
3) Turn off the output breaker and remove the parallel cable and share current cable of the UPS which
you want to remove. Now, you can remove the UPS from parallel system.
4) Turn on the input breaker of the remaining UPS and the system will transfer to Bypass mode. Set
the maintenance switches from “BPS” to “UPS position and put the maintenance bypass covers back
on.
5) Turn on the remaining UPS according to the previous section.
Warning: (Only for the parallel system)
●Before turning on the parallel system to activate inverter, make sure that all unit’s maintenance
switch at the same position.
●When parallel system is turned on to work through inverter, please do not operate the maintenance
switch of any unit.
●Please Do NOT enable the ECO mode in parallel system.

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3-6. Abbreviation Meaning in LCD Display
Abbreviation
Display content
Meaning
ENA
Enable
DIS
Disable
ATO
Auto
BAT
Battery
NCF
Normal mode (not CVCF mode)
CF
CVCF mode
SUB
Subtract
ADD
Add
ON
On
OFF
Off
FBD
Not allowed
OPN
Allow
RES
Reserved
N.L
Neutral line loss
CHE
Check
OP.V
Output voltage
PAR
Parallel, 001 means the first UPS
AN
The first phase
BN
The second phase
CN
The third phase
AB
The first line
BC
The second line
CA
The third line
HS.H
Hot Standby
3-7. LCD Setting
There are three parameters to set up the UPS. Refer to following diagram.
Parameter 1: It’s for program alternatives. Refer
to below tables for the programs to set up.
Parameter 2: It’s setting options or values for
each program.
Note: Please select “Up” or “Down” button to
change the programs or parameters.
Parameter 2
Parameter 1

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Programs available list for parameter 1:
Code
Description
Bypass /
No Output mode
AC
mode
ECO
mode
CVCF
mode
Battery
mode
Battery
Test
01
Output voltage
Y*
02
Output frequency
Y
03
Reserved
Reserved for future options
04
Reserved
Reserved for future options
05
ECO mode enable/disable
Y
06
Reserved
Reserved for future options
07
Reserved
Reserved for future options
08
Bypass mode setting
Y
Y
09
Maximum battery discharge time
setting
Y
Y
Y
Y
Y
Y
10
Reserved
Reserved for future options
11
Hot standby function Setting
Y
12
Neutral loss detection
Y
Y
Y
Y
Y
Y
13
Reserved
Reserved for future options
14
Reserved
Reserved for future options
15
Inverter A voltage adjustment
Y
Y
Y
16
Inverter B voltage adjustment
Y
Y
Y
17
Inverter C voltage adjustment
Y
Y
Y
18
Output A voltage calibration
Y
Y
Y
19
Output B voltage calibration
Y
Y
Y
20
Output C voltage calibration
Y
Y
Y
21
Charging current setting
Y
Y
Y
Y
Y
Y
21
Battery numbers setting
Y
*Y means that this program can be set in this mode.
Note: All parameter settings will be saved only when UPS shuts down normally with internal or external battery
connection. (Normal UPS shutdown means turning off input breaker in bypass/no output mode).
01: Output voltage
Interface
Setting
Parameter 2: Output voltage
For 208/220/230/240 VAC models, you may choose the following
output voltage:
208: presents output voltage is 208Vac
220: presents output voltage is 220Vac
230: presents output voltage is 230Vac
240: presents output voltage is 240Vac
For 120/127 VAC models, you may choose the following output
voltage:
120: presents output voltage is 120Vac
127: presents output voltage is 127Vac