Keatec Energy T 3310E User manual

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only
T SERIES UPS
10-40kVA 380Vac 3PH
User Guide
UNLESS SPECIFICALLY AGREED TO IN WRITING, SELLER
(A) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER
INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION;
(B) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECIAL,
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; AND
(C) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH STEPS HAVE BEEN
TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED
CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE.
(D) INFORMS YOU THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.
(E) RESERVES ALL RIGHTS.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 1
Contents
1．Safety......................................................................................................................................................2
1.1 Safety notes ..................................................................................................................................2
1.2 Symbols used in this guide........................................................................................................2
2．Main Features .......................................................................................................................................3
2.1 Summary........................................................................................................................................3
2.2 Functions and Features..............................................................................................................3
3．Installation.............................................................................................................................................4
3.1 Unpacking and Inspection .........................................................................................................4
3.2 Cabinet Outlook............................................................................................................................4
3.3 LCD/LED control panel ...............................................................................................................6
3.4 Installation notes..........................................................................................................................7
3.5 External Protective Devices........................................................................................................7
3.6 Power Cables................................................................................................................................8
3.7 Power cable connections............................................................................................................8
3.8 Battery connection ....................................................................................................................11
3.9 UPS Parallel Installation.............................................................................................................12
3.10 Computer access .....................................................................................................................13
4．Operation.............................................................................................................................................15
4.1 Operation Modes ........................................................................................................................15
4.2 Turn On / Off UPS.......................................................................................................................16
4.3 The LCD/LED Display................................................................................................................23
Appendix 1 Specifications .....................................................................................................................35
Appendix 2 Problems and Solutions....................................................................................................38
Appendix 3 USB communication port definition ...............................................................................39
Appendix 4 RS232 communication port definition............................................................................40
Appendix 5 RS485 communication port definition............................................................................41
Appendix 6 Dry contact port communication port definition..........................................................42
Appendix 7 REPO instruction................................................................................................................43

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 2
1．Safety
Important safety instructions –Save these instructions
This UPS contains lethal voltages and high temperature inside. All repairs and service
should be performed by AUTHORIZED AND QUALIFIED PERSONNEL ONLY. There are
NO USER SERVICEABLE PARTS inside the UPS. To reduce the risk of personal injury and
equipment damage, abide by all local safety codes and laws during operation, installation
and maintenance. Safety instructions in this manual act as a supplement to local safety
codes and laws. Our company does not assume any liability or responsibility caused by
disobeying local safety codes and laws.
1.1 Safety notes
1．The UPS is attached to an energy source (batteries).
2．The UPS output may carry live voltage even when the UPS is not connected to an AC
supply.
3．To reduce the risk of electric shock, securely ground the UPS.
4．Batteries can present a risk of electrical shock or burn from high short-circuit current.
Observe proper precautions.
5．Only qualified service personnel with knowledge of batteries and the required precautions
should perform servicing.
6．Keep unauthorized personnel away from batteries.
7．Proper disposal of batteries is required. Refer to your local codes for disposal
requirements.
8．Never dispose of batteries in a fire. Batteries may explode when exposed to flame.
9．To reduce the risk of fire or electric shock, install the UPS in a temperature and humidity
controlled, indoor environment, free of conductive contaminants (flammable gas,
excessive dust, etc.).
10．Ambient temperature must not exceed 40°C (104°F).
11．Do not operate near water or in excessive humidity (95% maximum).
12．To reduce the risk of overheating and fire, operate the UPS in a well-ventilated area.
13．Output overcurrent protection and disconnect switch must be provided by others.
1.2 Symbols used in this guide
WARNING!
Risk of electric shock
CAUTION!
Read this information to avoid equipment damage

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 3
2．Main Features
2.1 Summary
This series UPS is a three-in-three-out high frequency online UPS. The UPS helps avoid power
supply problems, such as blackout, over-voltage, under-voltage, sudden voltage drop, high
voltage pulse, voltage fluctuation, surge, inrush current, harmonic distortion (THD), noise
interference, frequency fluctuation, etc.
This UPS can be applied to different applications including computer device, automatic
equipment, communication system and industry equipment.
2.2 Functions and Features
3Phase In/3Phase Out UPS
It is 3Phase In/3Phase Out high-density UPS system.
Digital Control
This series UPS is controlled by Digital Signal Processor (DSP) which enhances and increases
reliability, performance, self-protection, self-diagnostics and so on.
Flexible Battery Input Configurable
10 - 30kVA: the battery for this series UPS can be configured using 16, 18 or 20 12V batteries.
40kVA: the battery for this series UPS can be configured using 32, 34, 36, 38 or 40 12V
batteries.
Charging Current is configurable
Using the PC Software, the user may set the capacity of the batteries as well as the maximum
charging current. Constant voltage mode, constant current mode or floating mode can be
switched automatically and smoothly.
Intelligent Charging
Advanced three-stage charging
1st stage: High constant current charging to 90%
2nd stage: Constant voltage to finish charging
3rd stage: Float replaces battery self-discharge
The 3-stage charging extends the life of the batteries and recharges batteries quickly.
LCD Display
With LCD and LED display its quick and easy to determine UPS status and operational
parameters, such as input/output voltage, frequency & load%, battery% and ambient
temperature, etc.
Intelligent Monitoring
An optional SNMP card can be used to remotely control and monitor the UPS.
Emergency Power Off Function
The UPS may be completely shut off when the EPO button is pressed. Remote EPO (REPO)
function is also available.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 4
3．Installation
3.1 Unpacking and Inspection
If any equipment received has been damaged during shipment, keep the shipping cartons and
packing materials for the carrier or place of purchase and file a claim for shipping damage. If
you discover damage after acceptance, file a claim for concealed damage.
To file a claim for shipping damage or concealed damage: 1) File with the carrier within 15
days of receipt of the equipment; 2) Send a copy of the damage claim within 15 days to your
service representative.
3.2 Cabinet Outlook
Front View Side View

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 5
10k-20kVA Rear View (terminal block without cover)
(1) LCD/LED panel
(2) RS485 port
(3) Dry contact port
(4) Parallel port 1
(5) USB port
(6) Parallel port 2
(7) RS232
(8) Power Switch
(9) REPO port
(10) I/P Switch
(11) Terminal block for AC (IN/OUT) & DC
Battery
(12) Intelligent Slot 1 (SNMP card/ Relay card)
(13) Maintenance switch & its cover
(14) Intelligent Slot 2 (SNMP card/ Relay card)
(15) O/P Switch
(16) Ground

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 6
30-40kVA Rear View (terminal block without cover)
(1) LCD/LED panel
(2) Intelligent Slot 1 (SNMP card/ Relay card)
(3) Intelligent Slot 2 (SNMP card/ Relay card)
(4) Battery Power Switch
(5) Dry contact port
(6) USB port
(7) RS485 port
(8) REPO port
(9) RS232
(10) Parallel port
(11) Maintenance switch & its cover
(12) I/P Switch
(13) O/P Switch
(14)Terminal block for AC (IN/OUT) & DC battery
(15) Ground
3.3 LCD/LED control panel

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 7
LCD/LED 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)
3.4 Installation notes
When installing the cabinet, a minimum space 100cm in front and 80cm in back of the cabinet
should be maintained for access and good ventilation.
Place the UPS in a well ventilated, dry, clean and stable indoors environment. Avoid vibration,
dust, humidity, corrosive and flammable gases and liquids. To reduce high room temperature
extractor fans should be installed. Air filters should be used to prevent from dust entering the
UPS.
The environment temperature around the UPS should in the range of 0 ～40°C. If the
environment temperature exceeds 40°C, the rated load capacity should be reduced by 12％ per
5°C. The max temperature should not exceed 50°C.
Unpacking the UPS in a low-temperature environment may cause condensation to occur inside
the UPS enclosure. To reduce the hazard of electrical shock, do not install the UPS until the
inside and outside of the enclosure are absolutely dry.
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 mains and activating it for the time required for
recharging the batteries.
The highest altitude that UPS may work normally with a full load is 1500 meters. The load
capacity should be reduced when this UPS is installed at an altitude higher than 1500 meters.
Load coefficient equals max load at altitude 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%
Cooling of the UPS is depending on the internal fan, install the UPS in an area with good air
ventilation. Do not block the ventilation holes on the front and rear of the UPS.
3.5 External Protective Devices
For safety, it is necessary to install an external circuit breaker at the input AC supply and another at
the battery. This chapter provides guidelines for authorized personnel and qualified installers -
knowledge of local wiring codes and laws is essential.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 8
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 protect the UPS from becoming overloaded.
Over-Current
Protection devices shall be installed at the distribution panel of the incoming mains
supply.
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. Follow
local wiring codes and laws taking into consideration the environmental conditions (temperature
and physical).
WARNING!
Upon starting, 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.
Post any necessary warning signs to prevent any inadvertent operation.
For future expansion, it is recommended to install power cable according to the full rated
capacity.
UPS
cabinet
Cable Dimension
AC Input
(mm2)
AC Output
(mm2)
DC Input
(mm2)
Grounding
(mm2)
10KVA
4
4
10
4
15KVA
6
6
16
6
20KVA
8
8
20
8
30kVA
12
12
35
8
40kVA
16
16
35
10
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 connections
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

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 9
UPS are open. Check to see if they are electrically isolated, and post any necessary warning signs to
prevent their inadvertent operation.
◆ Remove the cover of terminals.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 10
10-20kVA:
Terminal sequence from left to right: Input phase A(L1), input phase B(L2), input phase C(L3), input
Neutral line, output phase A(L1), output phase B(L2), output phase C(L3), output Neutral line, battery
positive, battery Neutral, battery negative. There are 3 connectors for GROUND under the terminal
block.
30-40kVA:
Terminal sequence from left to right: Input phase A(L1), input phase B(L2), input phase C(L3), input
Neutral line, output phase A(L1), output phase B(L2), output phase C(L3), output and battery Neutral
line, battery positive, battery negative. There are 3 connectors for GROUND under the terminal block.
◆ Select the appropriate power cable (Refer to the table above).
Pay attention to the diameter of the connection terminal of the cable, it should be greater than or
equal to that of the connection poles.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 11
WARNING!
If the load equipment is not ready to accept power during commissioning,
ensure that the system output cables are safely isolated at their ends
◆ Connect the safety earth and any necessary bonding earth cables to the copper earth screw
located on the floor of the equipment below the power connections. All cabinets in the UPS must
be grounded properly.
CAUTION!
The earthing and neutral bonding arrangement must be in accordance with
local and national codes of practice.
3.8 Battery connection
10-30kVA:
The UPS uses positive and negative double battery framework, with 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. The neutral cable, the battery Positive and the battery
negative are connected to the UPS respectively. The battery sets between the Battery anode
and the neutral are called positive batteries and those between neutral and cathode are called
negative batteries. Users can choose the capacity and the numbers of the batteries according to
the set-up, however all must be the same type and Ah rating.
External battery connections for long-run units.
40kVA:
The UPS use positive and negative double battery framework, with 16pcs (optional 18/20) in
series. A neutral cable is retrieved from the joint between the cathode of the 16th
(17th/18th/19th/20th) and the anode of the 17th (18th/19th/20th/21th) of the batteries. The neutral
cable, the battery Positive and the battery negative are connected to the UPS respectively. The
battery sets between the Battery anode and the neutral are called positive batteries and those
between neutral and cathode are called negative batteries. Users can choose the capacity and
the numbers of the batteries according to the set-up, however all must be the same type and Ah
rating.
External battery connections for long-run units.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 12
Note
The BAT+ of the UPS connection 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.
10-30kVA factory default setting of the long-run unit for battery quantity is 16pcs and for battery
capacity 65AH (charger current 9.75A). When connecting 18/20 batteries set the battery quantity
and its capacity after the UPS starts in AC mode. Charger current will be adjusted automatically
according to battery capacity selected (Charger current is also selectable). All related settings
can be done through LCD panel or monitoring software.
40kVA factory default setting of the long-run unit for battery quantity is 32pcs and for battery
capacity 65AH (charger current 9.75A). When connecting 32/34/36/38/40 batteries set the
battery quantity and its capacity after the UPS starts in AC mode. Charger current will be
adjusted automatically according to battery capacity selected (Charger current is also selectable).
All related settings can be done through LCD panel or monitoring software.
CAUTION!
Ensure correct polarity battery string series connections. I.e. inter-tier and
inter block connections are from (+) to (-) terminals. Do not mix new and old
batteries, different capacities or brands.
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
(-). 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.
.
3.9 UPS Parallel Installation
The following sections introduce the installation procedures specific to a parallel system.
3.9.1 Cabinet installation
Connect all the UPS needed in the parallel system as below.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 13
Make sure each UPS input breaker is in the “off” position and there is no output from any of the UPS.
Battery groups can be connected separately or in parallel, which means the system can be either
a separate battery or a common battery.
WARNING!
Make certain the N, A (L1), B (L2), C (L3) lines are correct and grounding is
well secured.
3.9.2 Parallel cable installation
The shielded and double insulated control cables must be interconnected in a ring configuration
between UPS units as shown below. The ring configuration ensures high reliability of the control.
3.9.3 Requirement for the parallel system
For a group of paralleled modules behave as one large UPS system and in order to assure that
all modules are equally utilized and comply with relevant wiring rules, 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 Mains 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 must be the same. This facilitates load sharing when operating in
bypass mode.
3.10 Computer access
To use the included software management program Muser4000 a USB connection is required.
One end of an USB cable connects to the computer and the other end connects to the USB port
on the UPS.
◆ Open the Muser4000 software, then click on the “system” button.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 14
◆ The “Software Parameter Setting” window will open, as below. Select the COM port related to
the UPS, set the baud rate as 9600 and for the Protocol select “HIP”. Save these settings.

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 15
◆ On the main page of Muser4000, click on the button of “Append. The “Append equipment”
window will open as below.
◆ Enter the name of the UPS into “Equipment Name” box, and select the ID address for the
UPS in the “Equipment address” box.
◆ Click on the “Append” button to complete the connection between UPS and computer.
CAUTION!
Do not use the PC Software to set output voltage and frequency while the
inverter is running. Shut down the inverter, before using the PC Software to set
the output voltage and frequency.
4．Operation
4.1 Operation Modes
The UPS is a double-conversion on-line UPS that may operate in the following 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. The inverter converts the DC
power to AC and supplies to the load.
Battery mode (Stored Energy Mode)

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 16
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
switchwill 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).
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. In ECO mode, the UPS
works in Line-interactive mode, so the UPS will transfer to bypass supply. When the AC is out of
the set window, the UPS will transfer from bypass to Inverter and supplies power from the battery.
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 can be
programmed to operate in parallel. Each UPS has a built-in parallel controller and coordinates
with the other UPS using a control cable to manage load sharing automatically.
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 Restart procedure
CAUTION!
Make certain grounding is correct and secure.
◆ Set the Battery Breaker to the “ON” for long run UPS.
◆ Switch ON the power switch for standard 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

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 17
from the UPS output terminals.
◆Switch ON UPS input switch
If the Rectifier input is within voltage range, the rectifier will start up in 30 seconds, the inverter
will start up after.
◆Switch ON UPS output switch
If the rectifier fails at startup, the bypass LED will light up. When the inverter starts up, the UPS
will transfer from bypass mode to inverter mode, and then the bypass LED extinguishes and the
inverter LED lights up. The status will be shown on the LCD display.
4.2.2 Test procedure
CAUTION!
When 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 battery LEDs 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 recommended to use Dummy loads for testing. The UPS can be loaded up to
its maximum capacity during load test.
4.2.3 MAINTENANCE BYPASS
To supply the load from the Mains, activate the internal mechanical bypass switch.
CAUTION!
The load is not protected by the UPS when the internal mechanical bypass system is
active and the power is not conditioned.
Switch to mechanical bypass
CAUTION!

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 18
If the UPS is running normally and can be controlled through the display, carry out
steps 1 to 5; otherwise, go to Step 4.
1. Open the cover of maintenance switch, the UPS turns to bypass mode automatically.
2. Turn on MAINTANCE breaker
3. Open BATTERY breaker
4. Switch OFF the MAINS breaker
5. Switch OFF OUTPUT breaker
At this time the bypass source will supply to the load through the MAINTENANCE breaker.
Switch to normal operation (from mechanical bypass)
CAUTION!
Do not attempt to switch the UPS back to normal operation until it has been
verified that there are no internal UPS faults
◆ Switch ON the output breaker.
◆ Switch ON the input breaker.
The UPS powers from the static bypass instead of the maintenance bypass, the bypass LED will
light up.
◆ Switch OFF the maintenance bypass breaker, the output is supplied by the static bypass of
the UPS.
◆ Replace the maintenance switch cover.
The rectifier will operate normally after 30 seconds. If the inverter works normally, the system
will be transferred from bypass mode to normal mode.
4.2.4 Cold start procedure
CAUTION!
Follow these procedures when the input AC Utility Failure, but battery is
normal.
◆Set the Battery Breaker to the “ON” position for long run UPS.
◆Switch ON the power switch for standard UPS.
◆ Turn on the Output switch.
◆ Switch ON the power switch (power will feed to auxiliary power board).

KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.
Page 19
◆ Trigger the cold start button (position 5) as shown below.
When battery conditions are normal the rectifier starts operation, 30s later the inverter starts and
the battery LED will be on.
CAUTION!
Press the start button for 30 seconds until the battery switch closes.
4.2.5 Shut down procedure
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 should be no output.
On-line mode:
◆Press OFF to shut down the UPS, wait about 30s.
◆ Open the BATTERY breaker for long run UPS.
◆ Open the battery power switch for standard UPS.
◆ Switch OFF the input breaker.
◆ Open the OUTPUT breaker. The UPS shuts down.
◆ To completely isolate the UPS from AC Mains, all switches for the utility input shall be turned
off.
◆ At the primary input distribution panel, a label should be posted to advise personnel that the
UPS circuit is under maintenance.
Battery mode:
◆Press OFF to shut down the UPS, wait about 30s.
◆ Open the BATTERY breaker for long run UPS.