KStar YDC9300-RT Series User manual

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All rights reserved.
The information in this document is subject to change without notice.
Publish statement
Thank you for purchasing this series UPS.
This series UPS is an intelligent, three phase in single phase out（support for single
phase input）, high frequency online UPS designed by our R&D team who is with
years of designing experiences on UPS. With excellent electrical performance,
perfect intelligent monitoring and network functions, smart appearance, complying
with EMC and safety standards, This UPS has become standard product which meets
the world’s advanced level.
Read this manual carefully before installation
This manual offers technical support for equipment operator

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Contents
1. Safety························································································································ 2
1.1 Safety notes ····························································································································2
1.2 Symbols used in this guide ·····································································································2
2. Main feature············································································································· 3
2.1 Summarization ························································································································3
2.2 Functions and Features ··········································································································3
3. Installation ··············································································································· 4
3.1 Unpack checking·····················································································································4
3.2 UPS Module Outlook ·············································································································4
3.3 LCD control panel ···················································································································5
3.4 Installation notes ·····················································································································6
3.5 External Protective Devices ····································································································7
3.6 Power Cables··························································································································7
3.7 Power cable connect···············································································································8
3.8 Battery connection···················································································································9
3.9 UPS Multi－Module Installation·····························································································11
3.9.1 Cabinet Installation·············································································································11
3.9.2 Parallel cable Installation ···································································································12
3.9.3 Requirement for the parallel system···················································································13
4. Operation································································································································13
4.1 Operation Modes···················································································································13
4.2 Turn on/off UPS ····················································································································14
4.2.1 Connecting with Utility ········································································································14
4.2.2 Black start procedure ·········································································································14
4.2.3 Inverter Off ·························································································································15
4.2.4 Disconnecting with Utility····································································································15
4.2.5 Parallel setting····················································································································16
4.3 LCD Display instruction ·······································································································17
4.4 Working Mode and transferring···························································································21
4.5 UPS monitoring ·····················································································································22
4.6 LCD operation menu ·············································································································22
4.7 Options··································································································································23
Appendix 1 Specifications ···········································································································25
Appendix 2 Problems and Solution·····························································································26
Appendix 3 Communication port definition ··············································································27
Appendix 4 UPS message table···································································································28

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1．Safety
Important safety instructions – Save these instructions
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. Safety
instructions in this manual act as a supplementary for the local safety instructions. Our
company will not assume the liability that caused by disobeying local safety instructions。
1.1 Safety notes
1．Even no connection with utility power, 220/230/240VAC voltage may still exist at UPS
outlet！
2．For the sake of human being safety, please well earth the UPS before starting it .
3．Don’t open or damage battery, for the liquid spilled from the battery is strongly poisonous
and do harmful to body！
4．Please avoid short circuit between anode and cathode of battery, otherwise, it will cause
spark or fire！
5．Don’t disassemble the UPS cover, or there may be an electric shock！
6．Check if there exists high voltage before touching the battery
7．Working environment and storage way will affect the lifetime and reliability of the UPS.
Avoid the UPS from working under following environment for long time
◆Area where the humidity and temperature is out of the specified
range(temperature 0 to 40℃, relative humidity 5%-95%)
◆Direct sunlight or location nearby heat
◆Vibration Area with possibility to get the UPS crashed.
◆Area with erosive gas, flammable gas, excessive dust, etc
8．Keep ventilations in good conditions otherwise the components inside the UPS will be
over-heated which may affect the life of the UPS.
1.2 Symbols used in this guide
WARNING!
Risk of electric shock
CAUTION!
Read this information to avoid equipment damage

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2．Main Features
2.1 Summarization
This series UPS is a kind of three phase in single phase out high frequency online UPS, it
provides two capacities: The 6KVA and 10KVA. The products are modularized and adopt the
N+X redundancy. It can flexibly increase the number of the UPS modules according to the
load capacity which is convenient for flexible allocation and gradually investment.
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 Functions and Features
◆3Phase In/1Phase Out UPS （support for single phase input）
It is 3Phase In/1Phase Out high-density UPS system, of which input current is kept in
balance. No unbalance problem might occur. And also support for single phase input.
◆Digital Control
This series UPS is controlled by Digital Signal Processor(DSP); ehance, it increases
reliability, performance, self-proteciton, self-diagnostics and so on.
◆Battery Configurable from 16pcs to 20pcs
The battery voltage of this series UPS can be configured at 16pcs, 18pcs or 20pcs
according to your convenience.
◆Intelligent Charging Method
The series UPS adopts advanced three-stage charging method—
1st stage: high current constant current charging
to guarantee to charge back to 90%;
2nd-stage: Constant Voltage
In order to vitalize battery and make sure batteries are fully charged
3rd stage: floating mode.
With this 3-stage charging method, it extends the life of the batteries and guarantees fast
charging.
◆LCD Display
With LCD plus LED displays, the user may easily get UPS status and its operational
parameters, such as input/output voltage, frequency & load%, battery % and ambient
temperature, etc..
◆Intelligent Monitoring Function
Via optional SNMP Card, you may remotely control and monitor the UPS.

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3．Installation
3.1 Unpack checking
1. Don’t lean the UPS when moving it out from the packaging
2. Check the appearance to see if the UPS is damaged or not during the transportation,
do not switch on the UPS if any damage found. Please contact the dealer right away.
3. Check the accessories according to the packing list and contact the dealer in case of
missing parts.
3.2 UPS Module Outlook
Front View
Rear View

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Side View
(1) handles (2) fixing screw hole (3) LCD Display (4) Input Terminal (5)
fan (6) Dry contact （7）USB port （8）Intelligent Slot (9)Output Terminal
(10)Battery Terminal (11) Input Breaker (12) Parallel Port 1 (13) Parallel Port 2
(14) RS485 (15) EPO
3.3LCDcontrolpanel
开机
关机
退出
确认
旁路
主路 逆变 输出
故障
LCD control panel introduction
（1）LCD screen （2）ESC （3）OFF button （4）ON button （5）forward button （6）
Enter（7）backward button （8）Output Indicator （9）Inverter Indicator （10）Battery Indicator
（11）Mains (AC) Indicator（12）Bypass Indicator （13）Fault Indicator

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3.4 Installation notes
◆Please place the UPS in a clean, stable environment, avoid the vibration, dust, humidity,
flammable gas and liquid, corrosive objects. To avoid from high room temperature, a system of
room extractor fans is recommended to be installed. Optional air filters are available if the UPS
operates in a dusty environment.
◆The environment temperature around the UPS should keep in a range of 0℃～40℃. If
the environment temperature exceeds 40℃, the rated load capacity should be reduced by
12％per 5℃. The max temperature can't be higher than 50℃.
◆If the UPS is dismantled under low temperature, it might be in a condensing
condition.The UPS can't be installed unless the internal and external of the equipment is fully
dry. Otherwise, there will be in danger of electric shock.
◆Batteries should be mounted in an environment where the temperature is within the
required specs. Temperature is a major factor in determining battery life and capacity. In a
normal installation, the battery temperature is maintained between 15°C and 25°C. Keep
batteries away from heat sources or main air ventilation area, etc.
WARNING!
Typical battery performance data are quoted for an operating temperature
between 20°C and 25°C. Operating it above this range will reduce the battery
life while operation below this range will reduce the battery capacity.
◆Should the equipment not be installed immediately it must be stored in a room so as
to protect it against excessive humidity and or heat sources。
CAUTION!
An unused battery must be recharged every 6months. Temporarily connecting
the UPS to a suitable AC supply and activating it for the time required for
recharging the batteries are required.
◆The highest altitude that UPS may work normally with full load is 1500 meters. The
load capacity should be reduced when this UPS is installed in place whose altitude is
higher than 1500 meters, shown as the following table:
（Load coefficient equals max load in high altitude place divided by nominal power of
the UPS）
Altitude（m）1500 2000 2500 3000 3500 4000 4500 5000
Load coefficient 100% 95% 90% 85% 80% 75% 70% 65%
◆To get the UPS completely monitored by the software, you just simply connect RS232
cable to each end of the computer and the UPS respectively.

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3.5 External Protective Devices
For safety reasons, it is necessary to install, external circuit breaker at the input A.C.
supply and the battery. This chapter provides guidelines for qualified installers that must have
the knowledge of local wiring practices for the equipment to be installed.
◆External Battery
The UPS and its associated batteries are protected against the effect of
over-current through a DC compatible thermo-magnetic circuit-breaker (or a set of
fuses) located close to the battery.
◆UPS Output
Any external distribution board used for load distribution shall be fitted with
protective devices that may avoid the risk of UPS overloaded.
◆Over-current
Protection device shall be installed at the distribution panel of the incoming main
supply. It may identify the power cables current capacity as well as the overload
capacity of the system .
CAUTION !
Select a thermo magnetic circuit-breaker with an IEC 60947-2 trip curve C
(normal) for 125% of the current as listed below.
3.6 Power Cables
◆The cable design shall comply with the voltages and currents provided in this section,
Kindly follow local wiring practices and take into consideration the environmental conditions
(temperature and physical support media) .
WARNING！
UPON STARTING, PLEASE ENSURE THAT YOU ARE AWARE OF
THE LOCATION AND OPERATION OF THE EXTERNAL ISOLATORS
WHICH ARE CONNECTED TO THE UPS INPUT/BYPASS SUPPLY OF THE
MAINS DISTRIBUTION PANEL.CHECK TO SEE IF THESE SUPPLIES ARE
ELECTRICALLY ISOLATED, AND POST ANY NECESSARY WARNING
SIGNS TO PREVENT ANY INADVERTENT OPERATION
Cable Dimension
UPS
module
Cable Dimension
AC Input
(mm2)
AC Output
(mm2)
DC Input
(mm2)
Grounding
(mm2)
6KV
A
6 6 6 6
10KV
A
10 10 10 10

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CAUTION!
Protective earth cable: Connect each cabinet to the main ground
system. For Grounding connection, follow the shortest route
possible。
WARNING!
FAILURE TO FOLLOW ADEQUATE EARTHING PROCEDURES MAY
RESULT IN ELECTROMAGNETIC INTERFERENCE OR IN HAZARDS
INVOLVING ELECTRIC SHOCK AND FIRE
3.7 Power cable connect
Once the equipment has been finally positioned and secured, connect the power
cables as described in the following procedure.
Verify the UPS is totally isolated from its external power source and also all
power isolators of the UPS are open. Check to see if they are electrically isolated, and
post any necessary warning signs to prevent their inadvertent operation .
Left pic.---from the bottom up: GND, Input N, inputA(L1), input B(L2), Input C(L3);
Middile pic.---from left to right: GND, BAT+, BATN, BAT-;
Right pic.---from the bottom up: GND, output N, output L.
Choose appropriate power cable, and pay attention to the diameter of the
connection terminal of the cable that should be greater than or equal to that of
the connection poles;

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Input connection “3phase 4wires + ground”
Input connection “single phase + ground”
WARNING!
If the load equipment is not ready to accept power on the arrival
of the commissioning engineer then ensure that the system output
cables are safely isolated at their ends
CAUTION!
The earthing and neutral bonding arrangement must be in
accordance with local and national codes of practice.
3.8 Battery connection
The UPS uses a positive and negative double battery framework, total
16(optional 18/20) pieces in series. A neutral cable is retrieved from the joint between
the cathode of the 8th (9th/10th ) and the anode of the 9th (10th /11th) of the batteries.
Then the neutral, the battery positive and the battery negative are connected with the
UPS respectively. The battery sets between the Battery anode and the neutral are
called positive batteries and that between neutral and cathode are called negative
ones. Users can choose the capacity and the numbers of the batteries according to
their demands. The connection is shown as following:

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Note：
The BAT+ of the UPS connect poles is connected to the anode of the positive battery, the
BAT- is connected to the cathode of the positive battery and the anode of the negative battery,
the BAT- is connected to the cathode of the negative battery。
Factory default setting for battery quantity is 16pcs and for battery capacity is 7AH
(charger current 1A). When connecting 18pcs or 20pcs batteries, please re-set battery
quantity and its capacity after UPS starts at AC mode. Charger current could be adjusted
automatically according to battery capacity selected. (Also charger current is selectable). Via
the setting tool, all related parameter settings can be performed. These corresponding
settings are done though LCD.
CAUTION!
Ensure correct polarity battery string series connection. i.e. inter-tier and
inter block connections are from (+) to (-)terminals.
Don’t mix batteries with different capacity or different brands, or even mix up
new and old batteries, either.
WARNING!
Ensure correct polarity of string end connections to the Battery Circuit
Breaker and from the Battery Circuit Breaker to the UPS terminals i.e. (+)
to (+) / (-) to (-) but disconnect one or more battery cell links in each tier.
Do not reconnect these links and do not close the battery circuit breaker
unless authorized by the commissioning engineer.

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3.9 UPS Multi－Module Installation
The basic installation procedure of a parallel system comprising of two or more UPS
modules is the same as that of single module system. The following sections introduce the
installation procedures specified to the parallel system.
3.9.1 Cabinet installation
Connect all the UPSes needed to be put into parallel system as below picture.
Make sure each UPS input breaker is in “off” position and there is no any output from
each UPS connected. Battery groups can be connected separately or in parallel, which
means the system itself provides both separate battery and comman battery.
WARNING!
Make sure the N、A（L1）、B（L2）、C（L3）lines are correct, and grouding is
well connected.

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3.9.2 Parallel cable installation
Shielded and double insulated control cables available must be interconnected in a ring
configuration between UPS modules as shown below. The parallel control board is
mounted on each UPS module. The ring configuration ensures high reliability of the control.

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3.9.3 Requirement for the parallel system
A group of paralleled modules behave as one large UPS system but with the advantage
of presenting higher reliability. In order to assure that all modules are equally utilized and
comply with relevant wiring rules, please follow the requirements below:
1) All UPS must be of the same rating and be connected to the same bypass source.
2) The Bypass and the Main input sources must be referenced to the same neutral
potential.
3) The outputs of all the UPS modules must be connected to a common output bus.
4) The length and specification of power cables including the bypass input cables and the
UPS output cables should be the same. This facilitates load sharing when operating
in bypass mode.
4．Operation
4.1 Operation Modes
The UPS 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 to the load.
◆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 recovers.
◆Bypass mode
If the inverter is out of order, or if overload occurs, the static transfer switch will be
activated to transfer the load from the inverter supply to bypass supply without interruption to
the critical load. 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 15ms (50Hz) or less than 13.33ms (60Hz).

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◆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. 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, then the LCD shows all related information on the screen.
◆Parallel redundancy mode (system expansion)
To achieve a higher capacity and / or increase reliability, the outputs of up to four UPS
modules can be programmed to operate in parallel and the built-in parallel controller in each
UPS ensures automatic load sharing.
4.2 Turn on/off UPS
4.2.1 Connecting with Utility
CAUTION!
MAKE SURE GROUNDING IS PROPERLY DONE!
◆Set the Battery Breaker to the “ON” position according to the user’s manual.
◆Switch on the UPS
CAUTION！
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
The internal fan of the UPS starts spinning, the UPS is performing self-diagnostics until
buzzer beeps twice to show the UPS is normal. Then, the UPS goes to bypass supply, Utility
LED and Bypass LED turn Green, the inverter is starting up now. When the inverter is
checked “normal”, the UPS goes to working mode and the load is supplied by the inverter
now.
No matter the UPS is operated normally or not, the LCD display will indicate
current status. The top lines display the UPS operational status and the bottom
lines indicate alarm conditions when they occur.
4.2.2 Black(Cold) start procedure
开机
关机
退出
确认
旁路
主路 逆变 输出
故障

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CAUTION!
Follow these procedures when the input AC Utility Failure, but battery is
normal
◆Turn on the battery switch.
The battery will feed the Auxiliary power board.
◆Trigger the cold start buttons at the position 4 in above drawing.
When battery normal, rectifier starts operation, 30s later, inverter starts and
operates, INV and output light up.
CAUTION!
Wait for approximately 30 seconds before you press the black start key
4.2.3 Inverter Off
When the Utility is normal, press “Off” button for approx. 1 sec until beep sounds, the
inverter LED will extinguish, the bypass LED on, then the UPS turns to bypass supply.
When the UPS is on battery mode or without AC, press “Off” button for approx. 1 sec
until beep sounds, the output of the UPS is off, fan stop spinning.After 60 seconds, all
the LED on the LCD display extinguish.
4.2.4 Disconnecting with Utility
CAUTION!
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.
◆After the inverter is off, turn the Utility and battery breakers to “OFF”, then the
LCD display will extinguish completely and fan stops spinning in 60 seconds.
If there are external battery packs connected, please also turn the battery
breaker to “OFF”.
WARNING!
Wait for about 5 minutes for the internal D.C. bus bar capacitors to be
completely discharged.

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4.2.5 Parallel setting
After parallel connections done, start each UPS one by one, and set the paralle ID number,
parallel amount and parallel mode respectively. The parallel ID number cannot be the same.
Parallel setting in LCD instructions as below:
1) When AC start or battery clode start, at first the main interface will appear, as Fig.1.
Fig.1：main interface
2) Press any button, a basic status interface appears, as Fig.2; Then press forward button or
backforward button, the main menu interface appears, as Fig.3:
Fig.2：basic status interface Fig.3：main menu
3) Press forward button or backward button, choose “setting” and press ENT to inter the setting
menu, as Fig.4; then again press forward button or backward button, choose “parallel set”
and press ENT to enter parallel setting menu, as Fig.5.
Fig.4：setting menu Fig.5：parallel setting
4) Press ENT button to enter ID setting, as Fig.6; then press forward button or backward button
to set the ID number, for example 1,2,or 3…etc. After this seting the number, press ENT to
save this setting, as Fig.7. The paralel amount setting is the same as this ID setting.
Fig.6：parallel setting Fig.7：parallel setting
Welcome
10KVA
Mode:On-Line
Volt:AN BN CN
Vin: 220 219 221
Vout:220
Figure
Status
Setting
Command
Setting
User set
System set
Parallel set
Setting
Parallel Set
ID 1
P-Amount 2
Setting
Parallel Set
ID 1
P-Amount 2
Setting
Parallel Set
ID 1
P-Amount 2

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After setting the parallel amount, press ESC and return to the “setting” menu; then press forward
button or backward button to choose “system set” and press ENT to enter it. The system setting
menu is as Fig.8; Then ppress ENT to enter “mode” setting as Fig.9. Use the forward button or
backward button to set the mode, choose “parallel” and press ENT to save this setting.
Fig.8：system setting Fig.9：system setting
Note:
After setting all the parallel UPS, power off all the UPS, and press “UPS Multi－
Module Installation” to connect the UPS, then turn on the UPS.
4.3 LCD Display instruction
1）The main interface below comes out when the power is connected or the system is in cold
start. See Fig1
Fig.1：main interface
2）Press any key, it will change to the basic status interface , see Fig2 below
Fig.2：basic status interface
3）Press the or button, it will change to main menu, see Fig3
Fig.3：main menu
Welcome
10KVA
Mode:On-Line
Volt:AN BN CN
Vin: 220 219 221
Vout:220
Figure
Status
Setting
Command
Setting
System Set
Mode On-Line
Power Enable
Setting
System Set
Mode Parallel
Power Enable

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4）An arrow icon will come out on the LCD when pressing the ENT, then, the data info, status
info, setting info, command control can be selected by pressing the right or left arrow button,
and checking the details by pressing
5）Select and confirm the data info to be viewed in detail. It contains the details of the AC input
/output , inverter, battery , BUS, parallel , temperature. See Fig 4～Fig 12 below
Fig.4：main input info Fig.5：ouput info Fig.6：ouput info
Fig.7：Inverinfo Fig.8：battery info Fig.9 battery info
Fig.10：businfo Fig.11：parallel info Fig.12：temperature info
6）Select and confirm the status info to be viewed in detail, including status information,
alarm information, code, power rating and version. See Fig 13～Fig 19
Fig.13：main menu Fig.14：main menu
Fig.15：status info Fig.16：Alarminfo Fig.17：type info
Figure
Mains
A:225.9 B:224.8
C:225.5
Figure
Output
220.0V 0.0A
50.0Hz 0%
Figure
Output
0.0KW PAK: 0.0
0.0KVA
Figure
Invert
220.0V
50.0Hz
Figure
BUS
-390V +390V
Figure
Parallel ID
ID:01
Status
State
Alarm & Fault
Rated POWER
Status
Rated POWER
Code
Version
Status
State
CurState:Init
SWMB: OFF
Status
Alarm & Fault
Status
Rated POWER
MachInfo:0101
Rated: 10KVA
Figure
Temperature ℃
Inner:24
REC:24 INV:30
Figure
PBatt. Discharge
0V 0.0A
0% 0min
Figure
NBatt. Discharge
0V 0.0A
0% 0min

- 19 -
Fig18：code info Fig19：version info
7）Select and confirm setting menu , setting information will be displayed on the screen,
which includes user setting, system setting, parallel setting, battery setting, revise
setting.
Fig.20：setting menu Fig.21：setting menu
Select and confirm client setting ,then see Fig. 22.
Fig.22：user setting information
Select and confirm system setting menu ,then see Fig23～Fig28
Fig.23：system setting Fig.24：system setting Fig.25：system setting
Fig.26：system setting Fig.27：system setting Fig.28：system setting
Status
Code/Status
01 0x00
02 0x000000
Status
Version
LCD Ver. D000B001
DSP Ver. D000B001
Setting
User set
System set
Parallel set
Setting
Battery set
Revise set
Setting
User set
BL. 60sec
Contrast 2
Setting
System set
V-level 220V
F-level 50Hz
Setting
System Set
Auto Enable
F-Range 5%
Setting
System Set
V-Upper 15%
V-Lower -45%
Setting
System set
V-Fine 0.0
SW Times 9
Setting
System Set
Output Enable
Buzzer Disable
Setting
System Set
Mode On-Line
Power Enable