KStar YDC9300-RT Series User manual

4256-6860 A

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, 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 Features............................................................................................................................................. 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 PDU Module Outlook (Optional).................................................................................................... 5
3.4 LCD control panel............................................................................................................................. 5
3.5 Installation notes .............................................................................................................................. 6
3.6 External Protective Devices............................................................................................................ 6
3.8 Power cable connect........................................................................................................................ 8
3.9 Battery connection......................................................................................................................... 10
3.10 UPS Multi－Module Installation..................................................................................................11
3.10.1 Cabinet installation............................................................................................................11
3.10.2 Parallel cable installation................................................................................................. 12
3.10.3 Requirement for the parallel system............................................................................ 12
3.11 Computer access.......................................................................................................................... 13
4．Operation................................................................................................................................................... 15
4.1 Operation Modes............................................................................................................................. 15
4.2 Turn on/off UPS............................................................................................................................... 16
4.2.1 Connecting with Utility....................................................................................................... 16
4.2.2 Black(Cold) start procedure.............................................................................................. 17
4.2.3 Test procedure ..................................................................................................................... 17
4.2.4 Inverter Off ............................................................................................................................ 18
4.2.5 Disconnecting with Utility................................................................................................ 18
4.2.6 Parallel setting...................................................................................................................... 18
4.3 The Display....................................................................................................................................... 20
4.4 Parameters setting......................................................................................................................... 24
4.4.1 Mode setting......................................................................................................................... 24
4.4.2 Output voltage setting........................................................................................................ 24
4.4.3 Frequency setting................................................................................................................ 25
4.4.4 Battery capacity setting..................................................................................................... 25
4.4.5 Battery quantity setting ..................................................................................................... 26
4.4.6 Bypass voltage upper limit setting................................................................................. 26
4.4.7 Bypass voltage lower limit setting.................................................................................. 27
4.4.8 Buzzer Mute Setting............................................................................................................ 27
4.4.9 Periodical battery self-test Setting ................................................................................. 28
4.4.12 Parallel ID setting.............................................................................................................. 29
4.4.13 Parallel quantity setting................................................................................................... 30
4.4.14 Parallel redundancy quantity setting........................................................................... 30
4.5 Parallel system commissioning.................................................................................................. 31
4.6 Display Messages/Troubleshooting........................................................................................... 32
4.7 Options.............................................................................................................................................. 33
Appendix 1 Specifications.......................................................................................................................... 35
Appendix 2 Problems and Solution.......................................................................................................... 36
Appendix 3 RS232 communication port definition............................................................................... 37
Appendix 4 RS485 communication port definition............................................................................... 38
Appendix 5 BAT_T communication port definition.............................................................................. 39
Appendix 6 Output port definition............................................................................................................ 40
Appendix 7 MAINTAIN-AUXSWS port definition ................................................................................... 41
Appendix 8 EPO instruction....................................................................................................................... 42
Appendix 9 BMS communication port definition (Optional).............................................................. 43

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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-in-single -out high frequency online UPS. 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
◆Digital Control
This series UPS is controlled by Digital Signal Processor(DSP); ehance, it increases
reliability, performance, self-protection, self-diagnostics and so on.
◆Modular Design
◆Battery Configurable from 16 blocks to 20 blocks
The battery voltage of this series UPS can be configured at 16blocks, 18 blocks or 20 blocks
according to your convenience.
◆Charging Current is configurable
Via setting tool, the user may set the capacity of the batteries as well as reasonable charging
current as well as maximum charging current. Constant voltage mode, constant current mode or
floating mode can be switched automatically and smoothly.
◆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.
◆EPO Function
The series UPS may be completely shut off when the EPO is pressed. EPO function(Remote
EPO) is also available in this series 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
Side View
(1) Fixing screw hole (2) Handles (3)LCD Display (4)Input Terminal (5) Parallel Port 1
(6) Parallel Port 2 port (7) Battery Terminal (8) EPO port (9) Output port (10)
MAINTAIN-AUXSWS (11) Fan (12) BMS (optional) (13) Intelligent Slot (SNMP card/ Relay
card) (14) RS232 port (15)RS485 (16) Output Terminal (17) Output circuit breaker(16A)
(18) Output(16A)

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3.3 PDU Module Outlook (Optional)
Front View
Rear View
Side View
(1)Mains Breaker (2)Bypass Breaker (3)Maintenance Breaker (4)Output Breaker (5)handles
(6) Output(to UPS Output) (7) MAINTAIN-AUXSWS(to UPS MAINTAIN-AUXSWS)
(8)Input/ Output Terminal
3.4 LCD control panel
LCD control panel introduction
（1）LED（from top to bottom: ―alarm‖, ―bypass‖, ―battery‖, ―inverter‖）（2）LCD display
（3）scroll button （4）Off button （5）On button(battery cold start switch)
Note：ROTATE key ()
“” button for 10 seconds to realize LCD rotate

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3.5 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.
3.6 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.

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◆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.
The following table shows the recommended capacity of the UPS input/output breaker.
Please choose as needed.
CAUTION!
UPS has large leakage current. It is not recommended to use circuit breakers with
leakage protection.
CAUTION!
The following table shows the recommended preceding stage protection devices to
make the UPS reach the rated short-circuit current limit of 10kAand these protection
devices must comply with the IEC60947 standard.
Model/
mode
6kVA
10kVA
Single
mode
Three single
modes
Single
mode
Three single
modes
Mains breaker
40A
16A
63A
20A
Bypass breaker
40A
40A
63A
63A
Maintenance
breaker
40A
40A
63A
63A
Output breaker
40A
40A
63A
63A
Battery breaker
40A/3PIN
63A/3PIN
CAUTION!
In same source single input mode, refer to the recommended model of the bypass
breaker for the input circuit breaker in order to avoid exceptions caused by excessive
single-phase bypass output current.
The battery breaker should be DC 250Vdc and above.
3.7 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(KVA)
Cable Dimension
AC Input
(mm2)
AC Output
(mm2)
DC Input
(mm2)
Grounding
(mm2)
6
6
6
6
6
10
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
3.8 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: Input Ground, Bypass Neutral, Mains Neutral, Bypass L, Mains A (L1), Mains B (L2),
Mains C (L3)
Middle: Bat Positive, Bat Neutral, Bat Negative
Right: Output Ground, Output Neutral, Output L
AC Input UPS Input UPS Output Output(Load)
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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Three phase in single phase out
Single phase in single phase out
WARNING!
In the case of ―split bypass‖ operation, make sure the cable or copper
wire between each input lines have been removed. TheAC input and the
AC bypass supplies must be referenced to the same neutral point.
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.

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Power distribution mode for I/O system
There are four ways to connect the input and output cables according to the power
distribution requirements of users:
Three-in single out same source single input (default); three-in single out different source
dual input; single in single out same source single input; single in single out different source dual
input
When selecting different wiring methods, modify the short connected copper bars according
to the wiring method below.
Wiring method
Input connected short copper bar
Three-in single out same source
single input (default)
1PCS copper bar short connected to
Bps-N and Bps-N;
1PCS copper bar short connected to
Bps-L and Vin-A
Three-in single out different source
dual input
1PCS copper bar short connected to
Bps-N and Bps-N
Single in single out same source
single input
1PCS copper bar short connected to
Bps-N and Bps-N;
1PCS copper bar short connected to
Bps-L, Vin-A, Vin-B and Vin-C
Single in single out different source
dual input
1PCS copper bar short connected to
Bps-N and Bps-N;
1PCS copper bar short connected to
Vin-A, Vin-B and Vin-C
3.9 Battery connection
The UPS adopts positive and negative double battery framework, totally 16pcs (optional 18/20)
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 cable, 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. The user can choose the capacity and the numbers of the batteries according to their desire.
External battery connections for long-run units.

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Note：
The BAT+ of the UPS connect poles is connected to the anode of the positive
battery, the BAT-N 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 setting of the long-run unit is battery quantity---16pcs, battery
capacity---12V40AH (charger current 6A). When connecting 18/20 batteries, please
re-set desired battery quantity and its capacity after UPS starts atAC mode. Charger
current could be adjusted automatically according to battery capacity selected. All
related settings can be done through LCD panel or monitoring software.
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.
3.10 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.
3.10.1 Cabinet installation
Connect all the UPS needed to be put into parallel system as below picture.

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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 common battery.
WARNING!
Make sure the N、A（L1）、 B（L2）、 C（L3）lines are correct, and grounding is well
connected.
3.10.2 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.
3.10.3 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 modules must be of the same rating and be connected to the same bypass
source.
2) The outputs of all the UPS modules must be connected to a common output bus.
3) 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.

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3.11 Computer access
◆One end of a USB cable connect to the computer, the other end connect to the USB port on
the UPS.
◆Open the software Muser4000, click ―system‖ button.
◆A window of ―Software Parameter Setting‖ comes out as below, COM choose according to the
UPS , baud rate choose 9600, protocol choose ―HIP‖, then save this setting.
◆On the main page of Muser4000, click the button of ―Append‖, then goes to a window of
―Append equipment‖.

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◆Put the UPS name into ―Equipment Name‖, and UPS’ ID address into ―Equipment address‖.
◆Click the button ―Append‖, then the connection between UPS & computer is accomplished.
CAUTION!
When the UPS worked on inverter. If you want to use PC to set the
output voltage and frequency. Must shut down the inverter first.

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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, and then
the LCD shows all related information on the screen.
◆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 and this manual bypass switch bears for equivalent rated load.
4.2 Turn on/off UPS
4.2.1 Connecting with Utility
CAUTION!
MAKE SURE GROUNDING IS PROPERLY DONE!

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◆Set the Battery Breaker to the ―ON‖position according to the user’s manual.
◆Switch ON UPS input switch.
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
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 of the modules respectively as the position 5 of the 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 Test procedure
CAUTION!
The UPS is operating normally.It may take 60 seconds to boost up
the system and perform self-test completely.
◆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.
◆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。

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4.2.4 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.
4.2.5 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.
4.2.6 Parallel setting
◆Connect the UPS with computer. Power on the UPS.
◆Open Muser4000 software, after connecting with the UPS successfully, click
―System‖->―User Set‖