Liebert Power Supply GXT2 3X1 User Manual

GXT2 - 3X1 Intelligent, High  
Frequency, Online UPS  
10/15/20kVA USER MANUAL  
E1-20010329-C-1.0  
Liebert Corporation  
 
Do not place magnetic storage media on top of the unit as it can  
corrupt the data stored on them.  
Electromagnetic Compatibility  
WARNING  
This is a Class A UPS product. In a domestic environment this  
product may cause radio interference, in which case the user  
may be required to take additional measures.  
Limits on use:  
WARNING  
This UPS should not be supplied from electrical power  
systems of the 'IT' (Impedance a Terre ) type.  
(IEC 364-ELECTRICAL INSTALLATION OF  
BUILDINGS)  
 
Content  
1
Chapter 1 Introduction  
1.1 Application  
1
1
2
5
1.3 System Function Block  
1.4 Features  
Chapter 2 Installation  
2.1 Unpacking Inspection  
5
5
2.2 Outline and Panel Description  
2.2.1 Outline  
5
2.2.2 Front Panel  
7
2.2.3 Rear Panel  
8
2.3 Installation  
8
2.3.1 Important Note  
2.3.2 Installation Procedure  
2.4 Connection of External Batteries  
8
10  
13  
17  
Chapter 3 Operation  
3.1 Operating Mode  
17  
17  
18  
18  
19  
20  
21  
21  
22  
24  
25  
26  
3.1.1 Normal Mode  
3.1.2 Bypass Mode  
3.1.3 Battery Mode  
3.1.4 ECO Mode  
3.1.5 Failure Mode  
3.2 Operation  
3.2.1 Startup and Initialization  
3.2.2 Turn On the Inverter  
3.2.3 Manual Battery Self-testing  
3.2.4 Turn off the Inverter  
3.2.5 Totally Shutdown the System  
 
3.2.6 LCD Panel Operation  
26  
27  
Chapter 4 Maintenance and Storage  
I. Battery Maintenance  
II. Keep Air Vent Unblocked  
III. UPS State Check  
27  
28  
28  
28  
31  
IV. Function Inspection  
Chapter 5 Troubleshooting  
35  
Appendix 1 LCD Panel Displays and Operation  
1. Constitution of Display Panel  
2. Function of display Panel  
3. Menu Operation  
35  
36  
39  
42  
43  
46  
4. Information LCD-displaying Priority  
Relay Communication Mode  
Appendix 2 Product Specification  
Appendix 3 Accessories  
49  
 
6
Chapter 1 Product Introduction  
Chapter 1 Introduction  
1.1 Application  
GXT2-3X1 Series UPS provides high quality AC power to your precision instrument. It  
can be applied in Computer Center , Network Management Center, Communication  
System, Automation Control System, precision instrument or other Critical Systems.  
1.2 Classification  
" GXT2-3X1 " Series include 10kVA, 15kVA and 20kVA UPS products, shown in the  
following table:  
Capacity  
Model  
10kVA  
15kVA  
20kVA  
GXT2-3X1-0100L  
Extended Battery  
Cabinet is required  
GXT2-3X1-0150L  
Extended Battery  
Cabinet is required  
GXT2-3X1-0200L  
Extended Battery  
Cabinet is required  
Description  
1.3 System Function Block  
System can run with as a single UPS, or in Hot-standby mode to increase the system  
reliability (Refer to figure 1-2).  
Maintenance bypass  
bypass  
Short circuit cable  
for hot standby  
bypass breaker  
Electronic  
Transfer  
Switch  
Load  
Inverter  
Rectifier  
Utility  
Utility Switch  
Maintenance  
switch  
Charger  
Battery  
Group1  
Battery  
Group 2  
Figure 1-1 single UPS module  
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Chapter 1 Product Introduction  
7
Maintenance bypass  
bypass  
bypass Breaker  
Backup  
UPS  
Electronic  
Transfer  
Switch  
Load  
Inverter  
Utility  
Rectifier  
Utility Breaker  
Maintenance  
switch  
Charger  
Master UPS  
Battery  
Group1  
Battery  
Group 2  
Figure 1-2 hot-standby system  
1.4 Features  
GXT2-3X1 Series Three phase input/Single phase output 10kVA/15kVA /20kVA UPS  
is an advanced, intelligent, Online with Sinusoidal waveform output UPS system. The  
system adopts high-frequency double conversion topology structure with high input  
power factor, wide input voltage range, with the following Key features:  
UPS can operate with loss of input phases (up to 2 phases)  
Digital Signal Processing (DSP) Controlled.  
Self- diagnostic  
Intelligent battery management  
LCD & LED annunciation  
Static by pass  
Maintenance bypass  
Large internal charger  
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Chapter 2 Installation  
9
Chapter 2 Installation  
2.1 Unpacking Inspection  
1. Unpack the packing box to move the UPS to position , be careful not to drop it as it is  
heavy.  
2. In the event of product damage due to transportation, please notify Liebert or its  
authorized agent.  
2.2 Outline and Panel Description  
2.2.1 Outline  
LCD Display Panel  
Supporting caster  
Adjustable Footpad  
Ventilation holes on front panel  
Figure 2-1 UPS Front view  
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10  
Chapter 2 Installation  
Air-inlet holes on Front Panel  
Utility Switch  
Bypass Switch  
Maintenance Switch  
Figure 2-2 Front view without panel  
Utility  
Fault  
Battery  
Inverter  
Bypass  
On/Silence Key  
LCD Display  
Enter Key  
Off Key  
Scroll Key  
Figure 2-3 LCD display Panel  
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Chapter 2 Installation  
11  
contact closure port  
Alarm Relay Port  
Ventilation holes  
Input/Output Terminals block  
Figure 2-4 rear panel  
2.2.2 Front Panel  
Parts' Function Description  
Input Switch  
Used for controlling the utility input to UPS.  
10kVA UPS uses three-pole 63A/250VAC breaker  
15/20kVA UPS uses three-pole 100A/250VAC breaker  
Used for controlling the bypass input to UPS  
10kVA UPS uses 80A/250VAC circuit breaker;  
15/20kVA UPS uses 125A/250VAC circuit breaker  
For switching UPS to maintenance bypass.  
Note: To be operated by trained technical Personnel only.  
for ventilation of UPS  
Bypass Switch  
Maintenance  
switch  
Front Panel air  
inlet hole  
LCD Panel and Description is in Appendix 1 in detail.  
2.2.3 Rear Panel  
Parts' Function Description  
Input/output  
Used for UPS input/output cable connection and  
terminals  
external battery connection for UPS  
Provide Optical Coupler Dry Contact control  
signal, for OS and UPS shutdown.  
Contact closure port  
Alarm relay port  
bProvide relay Dry Contact alarm/ control signal,  
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Chapter 2 Installation  
It can be included in monitoring system defined  
by users .  
Heat Dissipation and Used for heat dissipation and ventilation of UPS  
ventilation holes  
2.3 Installation  
2.3.1 Important Note  
1. Please position the UPS on the flat ground/surface ..  
2. The distance from the rear and side panels of the UPS to the wall or other equipment  
should be greater than 20cm, and the air inlets on the front panel and at the bottom of  
the UPS should be kept unobstructed to facilitate ventilation and heat dissipation.  
3. Please ensure that the UPS is installed in an environment in compliance with UPS  
environmental specification.  
4. Avoid using the UPS in dusty or corrosive environment.  
5. Even if the UPS is shutdown, there could be high voltage inside, untrained personnel  
must not open the UPS as there may be danger of electric shock.  
6. Install four-pole or three-pole interactive circuit breaker with capacity higher than  
80A(suitable for 10kVA systemor 125Afor 15kVA/20kVA systemon the hot line  
of Three-phase utility input to isolate the input source in case of emergency. When  
using three-pole interactive circuit breaker, utility neutral line need not go through the  
circuit breaker and can be connected with UPS' neutral line directly.  
7. Please use right cable connection method to ensure the safety of UPS or customer  
equipment::  
Input hot  
output hot  
line  
U
V
W
line  
U
P
S
output  
neutral line  
Load  
Input neutral  
line  
N
E
4-pole Interactive  
circuit breaker  
Figure 2-5aright cable connection  
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Chapter 2 Installation  
13  
Input hot  
line  
output hot  
line  
U
V
W
U
P
S
Input neutral  
line  
output  
neutral line  
Load  
N/E  
Figure 2-5 bwrong cable connection  
Warning  
Classified according to European standard EN55022 , this is an A level UPS product.  
When it is used in family house, it may generate radio interference, user should take  
other measures in this condition.  
2.3.2 Installation Procedure  
1. Prior to any wire connection, please confirm that all the input and output circuit  
breakers are in OFFstate;  
2. As shown in Figure 2-6, connect the input cablesthree hot lines, neutral line and  
earth lineto the correspondent terminals and secure the screw;  
Note  
Please do not reverse connection of the input hot line and neutral line!  
Because the input default configuration of system's U phase is bypass input, please  
ensure the proper connection of U phase.  
Please don't use the power source socket on the wall as the UPS' input source.  
3. Connect the input cables hot lines, neutral line and earth lineof user's equipment  
to the correspondent UPS output terminals refer , figure 2-6 .  
Note  
When connecting the input and output cables, the input hot line and neutral line must  
be connected correctly and the UPS must be connected to earth firmly.  
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Chapter 2 Installation  
L1  
B_L B_N  
+
-
+ -  
Hot standby B_N End  
Battery1 + Terminal  
al  
Hot standby B_L End  
Hot standby L1 End  
Battrery1 - Terminal  
Battery2 + Terminal  
Battery2 - Terminal  
Figure 2-6a10kVA Input/output terminals( upper terminals' block)  
N U  
L N  
V W  
Input GND  
Output GND  
Output Neutral line  
Input Neutral line  
Input U phase line  
Input V phase line  
Output phase line  
Input W phase line  
Figure 2-6b10kVA Input/output terminals (lower terminals' block)  
B_N  
L1 B_L  
- + -  
+
Battery1+Terminal
Hot standby B_N End  
Hot standby B_L End  
Hot standby L1 End  
Battery1 - Terminal  
Battery2 + Terminal  
Battery2-Terminal
Figure 2-6c15/20kVA Input/output terminals (upper terminals' block)  
U
N
V
W L  
N
Output GND  
Input GND  
Input Neutral line  
Input U phase line  
Input V phase line  
Output Neutral line  
Output phase line  
Input W phase line  
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Chapter 2 Installation  
15  
Figure 2-6d15/20kVA Input/output terminals( lower terminals' block)  
Note  
For 10kVA system, at least 8AWG or 10mm2 copper wire should be used for input  
neutral line, input U phase line, hot standby L1 terminal, B_L terminal, B_N terminal  
and output neutral line and hot lineinput V or W phase lines and battery lines should  
be 10AWG or 6mm2 copper wire at least.  
For 15/20kVA system, at least 3AWG or 25mm2 copper wire should be used for input  
neutral line, input U phase line, hot standby L1 terminal, B_L terminal, B_N terminal  
and output neutral line and hot lineinput V or W phase lines and battery lines should  
be 5AWG or 16mm2 copper wire at least.  
4. For external battery connection, please refer to the procedures of external battery  
cables connection (please refer to figure 2-4);  
5. To connect the UPS to servers for OS shutdown, please connect server's serial port  
to the contact closure port at the rear of the UPS. Follow installation procedure of OS  
shutdown software ( Liebert's multiLink ) for proper installation.  
2.4 Connection of External Batteries  
1. The system needs to be connected with two strings of 240V batteries, the switch on  
the battery cabinet must be in "OFF" position, prior to connecting the batteries.  
Note  
Batteries of different models and make can not be used together.  
2. Confirm that the batteries quantity conforms the UPS' specification, voltage of each  
group of batteries should be 240 Vdc nominal or around 250 Vdc measured with a volt  
meter.  
3. Use a voltage meter to confirm that the voltage across the battery terminals on the  
UPS Input/output terminals' block is zero, before connecting the battery cable to the  
UPS.  
4. According to the wire connection shown in Figure 2-10, connect the positive  
pole( red ) and negative pole( black ) to the "+" and "-" battery terminals on terminals'  
block respectively and secure the terminals, pay attention not to reverse the batteries  
connection . For 15/20kVA UPS, it is necessary to use Ferrite T-core in the  
accessories as shown in Figure 2-10;  
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16  
Chapter 2 Installation  
Battery Cabinet  
Breaker of Battery Cabinet  
Battery 2  
_
+
_
+
Battery 1  
Figure 2-10 connection of external batteries  
5. Turn the switch on the battery cabinet to " ON " position.  
Note  
The battery connection and replacement should be done when the UPS is Completely  
switched OFF, if batteries are replaced while UPS is ON (hot - swappable ) pay  
attention not to reverse battery polarity. 2.5 Wire Connection for Hot Standby UPS  
1. Confirm the input circuit breakers of the master UPS and slave UPS are in "OFF "  
state ;  
2. Remove the short circuit cable used for hot standby of the master UPSthe short  
circuit cable between hot standby L1 terminal and B_L terminal;  
3. Connect the wires according to Figure 2-11.  
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Chapter 2 Installation  
17  
Backup UPS  
Master UPS  
+
-
+
-
L1 B_L B_N  
+
-
+
-
L1 B_L B_N  
Output neutral line of Backup UPS is connected to the N  
terminal of Master's bypass  
Output phase line of Backup UPS is connected to the L  
terminal of Master's bypass  
N
U
V
W
L
N
N
U
V
W
L
N
Output GND in Parallel  
Input GND in Parallel  
Input Neutral line in Parallel  
Input U phese line in Parallel  
Input V phase line in Parallel  
Input W phase line in parallel  
Figure 2-11aWire connection for 10kVA Master-slave hot standby UPS  
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18  
Chapter 2 Installation  
Backup UPS  
Master UPS  
+
-
+
-
L1 B_L B_N  
+
-
+
-
L1 B_L B_N  
Output neutral line of Backup UPS is connected to the N  
terminal of Master's bypass  
Output phase line of Backup UPS is connected to the L  
terminal of Master's bypass  
N
U
V
W
L
N
N
U
V
W
L
N
Output GND in Parallel  
Input GND in Parallel  
Input Neutral line in Parallel  
Input U phese line in Parallel  
Input V phase line in Parallel  
Input W phase line in parallel  
Figure 2-11bWire connection for 15/20kVA Master-slave hot standby UPS  
Please refer to section 2.3.2 Installation Procedures( item 3 ) for wire connection  
requirement for 15/20kVA Master-slave hot standby UPS.  
Note  
Confirm the right connection of hot line and neutral line and proper earthing. For hot  
standby UPS, the batteries of master UPS and slave UPS must be connected  
separately.  
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Chapter 3 Operation  
19  
Chapter 3 Operation  
3.1 Operating Mode  
3.1.1 Normal Mode  
When the input Utility voltage and the load are within specifications, the load is  
supplied by inverter, which draws power from rectifier; meanwhile, the charger  
float-charges or equalize-charges the battery. When in Normal mode, the Utility  
indicator and inverter indicator on the LCD panel be green in colour ,as shown in Fig.  
3-1.  
OUTPUT VOLT  
220.0V  
Figure 3-1  
Note  
If the UPS is power by generator set , please follow the requirements below:  
1. Start up the generator set first without switching on the loads, connect the UPS to the generator,  
then switch on the loads one by one till the generator operates stably (to ensure reliable operation of  
the generator, it is recommended that the UPS load be less than 30% of generator capacity).  
2. It is recommended that the generator capacity be 1.5~2 times of UPS rated capacity.  
3.1.2 Bypass Mode  
When utility is present and UPS is not turned on , or in the event of overload or other  
faults after the UPS is turned on, the load is supplied by Bypass AC source, which  
feeds directly from the Utility input; and meanwhile the charger will charge the battery.  
When in Bypass mode, the bypass indicator on the LCD panel turns green, as shown  
in Fig. 3-2. Please note: In the event of bypass power failure or bypass voltage falling  
outside tolerance when the UPS is in Bypass mode, the UPS will cease to supply  
electricity to the load .  
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20  
Chapter 3 Operation  
OUTPUT VOLT  
215.0V  
Figure 3-2  
Note  
Under this mode, if the bypass power fails or bypass voltage exceed the bypass  
voltage windows. , the UPS will not provide power to the load.  
3.1.3 Battery Mode  
When the UPS is in Normal mode, in the event of Utility failure or Utility voltage outside  
tolerances, the rectifier and charger will turn off , the battery begins to discharge and  
supply the load through inverter. When the UPS operates in Battery mode, the battery  
indicator and inverter indicator on the LCD panel turns green, as shown in Fig. 3-3,  
accompanied with a beep every 3 seconds, giving alarm that the UPS is operating in  
Battery mode.  
OUTPUT VOLT  
220.0V  
Figure 3-3  
In Battery mode, when the battery voltage is low the preset level , there will be a beep  
every 1 second, and the LCD screen displays "BATTERY LOW SHUTDOWN  
IMMINENT " .  
Note:  
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Chapter 3 Operation  
21  
Although the battery had been fully charged at factory before delivery, the transport  
and storage may result in loss of capacity , hence charging the battery for 8 hours is  
required before installing the UPS , so as to ensure adequate battery backup time.  
3.1.4 ECO Mode  
ECO mode is the economic operation mode. For the load equipment which is less  
critical , users can select ECO mode to power the equipment to reduce the power  
consuming. When the bypass voltage is normal, the bypass powers the load and the  
inverter supplies no load, bypass indicator on the Control Panel is ongreen, as  
shown in Figure 3-4.  
OUTPUT VOLT  
215.0V  
Figure 3-4  
Note  
Under ECO mode, if bypass power falls out of the bypass voltage range and there is no  
overload , the UPS will switch into inverter mode; however if there is an overload and  
bypass power fails or the bypass voltage is beyond the range the UPS will not go into  
inverter working mode and bypass will be shut off , load will be disrupted. .  
3.1.5 Failure Mode  
In the event of inverter fault, internal overtemperature or other faults in Normal mode,  
the UPS transfers to Bypass mode; however if this occurs in Battery mode, the UPS  
shuts down.  
In the event of UPS fault, the fault indicator on the LCD panel turns red, as shown in  
Fig. 3-4. Meanwhile, the buzzer beeps (except battery and charger fault), and the LCD  
screen displays corresponding fault information, see Appendix 1.  
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22  
Chapter 3 Operation  
OUTPUT VOLT  
215.0V  
Figure 3-5  
3.2 Operation  
3.2.1 Startup and Initialization  
After checking and making sure that the input and output cables are connected  
correctly, turn on the Utility switch and the bypass switch (for long backup time UPS,  
turn on the battery switch before closing the Utility switch). Then the system starts up,  
the internal fan begins to run, and the system begins to conduct self-test. After system  
self-test (the buzzer beeps twice indicating normal startup), the system enters in  
Bypass mode, the Utility indicator and bypass indicator turns green, as shown in 3-6.  
OUTPUT VOLT  
215.0V  
Figure 3-6  
3.2.2 Turn On the Inverter  
1. Start in Normal Mode  
1, After system power-on, press and hold the ON/SILENCE button for 1 second, then a  
beep is heard. Several seconds later, the bypass indicator goes off and the inverter  
indicator turns ON as shown in Fig. 3-7, the UPS is then operating in Normal mode.  
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Chapter 3 Operation  
23  
OUTPUT VOLT  
220.0V  
Figure 3-7  
Note  
If the previous shutdown was resulted from termination of battery discharge because  
of Utility failure, the automatic function will be activated when the Utility restores.  
2, After the system is started up properly , apply the load gradually and monitor the  
load condition through LCD, as shown in Figure 3-8:  
LOAD  
70.0%  
Figure 3-8  
3, In the event of load exceeding the rated capacity of the UPS, of 105% load , the  
buzzer will beep every 0.5 second with corresponding load percentage indication .  
Remove load accordingly so the UPS is not operating under overload condition.  
Note  
If the system transfers from Normal mode to Bypass mode for 3 times within 1 hour due  
to overload, it will remain in Bypass mode for 1 hour and can't transfer back to Normal  
mode till the overload is removed.  
2. Start in Battery Mode  
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24  
Chapter 3 Operation  
1. Press and hold the ON/SILENCE button for about 1 second, after a beep and  
system self-test, the battery indicator and inverter indicator turns green, as shown in  
Fig. 3-9, and the buzzer beeps every 3 seconds, indicating the UPS is operating in  
Battery mode.  
OUTPUT VOLT  
220.0V  
Figure 3-9  
2. Overload process is same with the above "Start from the utility power".  
Note  
If overload occurs when the UPS is on the battery, remove part load immediately or  
the system will shutdown after a short time lapse.  
3.2.3 Manual Battery Self-testing  
When in Normal mode, provided that the Utility voltage is normal, no overload exists,  
and the battery voltage is not lower than 240V, battery test can be conducted by  
pressing button on the LCD panel press and hold the ON/SILENCE button for 4  
seconds (a beep is heard 3 times) and then release the button . 3 seconds later, the  
battery test begins, the battery indicator turns on , and the buzzer beeps as in Battery  
mode. After battery test, the buzzer stops beeping, the battery indicator goes off, and  
the displays on the panel indicators restore to the state prior to test. When battery fault  
is detected (no battery, faulty battery, or battery reverse connection) during test, the  
fault indicator turns on , and the LCD screen displays "BATTERY FAIL", as shown in  
Fig. 3-10b.  
OUTPUT VOLT  
Battery Fault  
220.0V  
Figure 3-10a)  
Figure 3-10b)  
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Chapter 3 Operation  
25  
Note  
After battery test, the battery state information will be refreshed. In the event of battery  
fault due to the battery not bang fully charged is detected during test, user may re-test  
the battery after fully charging it to confirm that the fault is removed.  
3.2.4 Turn off the Inverter  
1. When the system has Utility input and the Utility is normal, press and hold the OFF  
button for about 1 second, then a beep is heard, the inverter indicator goes off and the  
bypass indicator turn on , as shown in Fig. 3-11, indicating the UPS has transferred to  
Bypass mode.  
OUTPUT VOLT  
215.0V  
Figure 3-11  
2, When the system has no Utility input (in Battery mode), press and hold the OFF  
button for about 1 second, then a beep is heard, the UPS will have no output and the  
LCD screen displays "UPS SHUTDOWN". About 30 seconds later, all panel indicators  
go off, and the fan stops running.  
3.2.5 Totally Shutdown the System  
After turning off the inverter, turn the Utility switch and the bypass switch to OFF, all  
panel indicators go off, and the fan stops running (if there is a battery, a delay time of  
30 seconds is needed before the fan stops). Then , the system is completely powered  
off. If the UPS is connected to external battery, place the switch of the external battery  
to OFF. After system power-off, the UPS will have no output to supply the load.  
3.2.6 LCD Panel Operation  
For LCD Panel Operation please refer to Appendix 1.  
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Chapter 4 Maintenance and Storage  
27  
Chapter 4 Maintenance and Storage  
I. Battery Maintenance  
The internal battery of GXT2-3X1 series UPS is sealed, lead-acid, maintenance-free  
battery. The battery life depends on the ambient temperature, charge and discharge  
cycles . High ambient temperature and deep discharge can shorten battery life.  
To ensure battery life, the battery should be maintained regularly:  
Keep the ambient temperature between 15and 25.  
Prevent small current discharge, continuous battery discharge time exceeding 24  
hours is must be avoided .  
When the UPS hasn't been used for a long time, and the battery hasn't been  
charged for 3 months at specified ambient temperature, or 2 months at high  
ambient temperature, please charge it for at least 12 hours.  
As to external battery of long backup time UPS, the wiring terminals of the external  
battery must be checked regularly and, when necessary, should be cleaned.  
If the battery backup time is found noticeably shortened, or when the UPS LCD  
displays "BATTERY FAIL", please contact the Liebert or its authoriged agent to  
confirm whether the battery needs to be replaced. Before replacement, please make  
sure that the specifications of the new batteries are correct.  
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Chapter 4 Maintenance and Storage  
Notice  
1. Never short-circuit the battery terminals, which may result in fire.  
2. Never open the battery, as the electrolyte is harmful to human body. In the event of  
inadvertent contact of electrolyte, immediately rinse it off with water and go to hospital  
for treatment .  
II. Keep Air Vent Unblocked  
1. Regularly clean the system, especially the air inlet and air outlet. Make sure the air  
flows freely inside the chassis. Use vacuum cleaner for cleaning when necessary.  
2. Check the air vents on the front, rear, and side panels, make sure they are not  
obstructed .  
III. UPS State Check  
1. Check whether the UPS is faulty: is the fault indicator ON ? Is fault alarm being  
displayed.  
2. Is the UPS operating in Bypass mode: in normal case, the UPS operates in Normal  
mode; if it is operating in Bypass mode, please find out the reason, for instance:  
operator intervention, overload, internal fault, etc.  
3. Is the battery discharging: when the Utility is normal, the battery shouldn't discharge;  
if the UPS is operating in Battery mode, please find out the reason, for instance: Utility  
failure, battery test, operator intervention, etc.  
IV. Function Inspection  
It is recommended to inspect the UPS functions once half year.  
1. Press the OFF button, check whether the buzzer, LED indications and LCD display  
are normal (see Section 3.1 Operation Mode). Please do this after confirming that the  
Utility is normal and data backup has been done.  
2. Press the ON/SILENCE button, check again whether the LED indications and LCD  
display are normal and the UPS transfers to Normal mode.  
3. When the inverter is in Normal mode (the inverter indicator is on ), press and hold  
the ON/SILENCE button for 4 seconds to start battery test. Should any battery problem  
be found, immediately find out the problem and solve it.  
E1-20010329-C-1.0  
 
Chapter 5 Handling Abnormal Problem  
29  
Chapter 5 Troubleshooting  
In the event of UPS fault, please check and remove the fault immediately following the  
methods described in the table below. If the fault persist , please contact Liebert or its  
authoriged agents.  
Sequence  
Phenomena  
Description  
Cause  
Action  
No.  
1
No panel display and A. Utility hasn't been  
system self-test when introduced into the  
the Utility switch is in system;  
Use voltmeter to check  
whether the input Utility  
voltage is within  
the ON position.  
B. Input undervoltage. tolerances.  
2
The Utility is normal,  
A. The input switch is  
A. Turn on the input  
switch;  
but the Utility indicator turned off;  
does not turn to and  
the UPS operates in  
Battery mode.  
B. The input power line B. Make sure that the  
is not properly  
connected;  
input power line is  
properly connected;  
3
4
No alarm is given, but The output power line is Make sure that the output  
there is no voltage  
output.  
not properly connected. power line is properly  
connected.  
No panel display and A. Utility hasn't been  
system self-test when introduced into the  
the Utility switch is in system;  
Use voltmeter to check  
whether the input Utility  
voltage is within  
the ON position.  
The Utility indicator  
flashes.  
B. Input undervoltage. tolerances.  
5
6
The Utility voltage is  
outside tolerances.  
If the UPS is operating in  
Battery mode, please  
note the battery backup  
time.  
The buzzer beeps  
every 0.5 second, and  
the LCD displays  
"OVERLOAD"  
Overload.  
Disconnect some loads  
from the UPS.  
7
The fault indicator is on A. The external battery A. Check whether the  
external battery switch is  
and the LCD displays switch is turned off, or  
turned on and its lead is  
"BATTERY FAIL".  
its lead is not properly  
connected;  
properly connected;  
B. Check whether the  
battery is reversely  
connected;  
B. Battery reverse  
connection;  
C. Contact the distributor  
for battery replacement;  
Contact the Liebert or its  
authoriged agent for  
charger  
C. Battery damaged;  
8
The fault indicator is  
on , and the LCD  
displays "CHARGER  
FAIL".  
Charger fault  
replacement/maintenanc  
e.  
E1-20010329-C-1.0  
 
30  
Chapter 5 Handling Abnormal Problem  
Sequence  
Phenomena  
Description  
The UPS has reduced A. The battery is not  
Cause  
Action  
No.  
9
A. Allow the battery to  
charge for more than 8  
hours when the Utility is  
normal, and then re-test  
the discharge time;  
B. The battery needs  
replacement, please  
contact the Liebert or its  
authoriged agent. .  
A. Check whether there is  
air flowing out from  
inside.  
battery time.  
fully charged;  
B. The battery is not  
able to hold a full  
charge due to age.  
10  
The buzzer beeps, the Internal  
fault indicator shines, overtemperature  
and the LCD displays  
"TEMP OVER"  
B. Remove the objects  
blocking the vent, or  
widen the distance from  
the wall;  
C. Wait for 10 minutes for  
the UPS cools down, then  
restart it.  
11  
12  
The buzzer beeps, the UPS output  
Restart the UPS after  
confirming that load  
short-circuit does not  
exist.  
fault indicator is on ,  
and the LCD displays  
"OUTPUT SHORT"  
short-circuit.  
The buzzer beeps, the UPS internal fault  
fault indicator shines,  
The UPS needs  
maintenance, please  
contact the Liebert or its  
authoriged agent  
and the LCD displays  
"RECTIFIER FAIL",  
"INVERTER FAIL",  
immediately .  
"AUX SUPPLY FAIL",  
or "OUTPUT FAIL".  
13  
Abnormal noise or  
UPS internal fault  
Turn off the UPS and cut  
off the power input  
smell inside the UPS.  
immediately, contact  
Liebert or its anthoriged  
agent for assistance.  
When reporting UPS , please provide the machine model and machine serial No. (the  
bar code on the rear panel of the UPS).  
E1-20010329-C-1.0  
 
Chapter 6 Service after Sales  
31  
Appendix 1 LCD Panel Displays and Operation  
LCD display interface is formed by LCD, LED and keys (see Appendix-Figure 1-1), it  
mainly finish the displaying and control of the following information: UPS basic  
parameter information, operating parameters information, alarm information, failure  
code information and function setup information.  
Utility indicator (green)  
Battery indicator (green)  
Inverter indicator (green)  
Fault indicator (red)  
Bypass indicator (green  
Silence Key  
LCD Display Panel  
Off Key  
Enter Key  
Scroll Key  
Appendix-Figure 1-1 LCD Panel  
1. Constitution of Display Panel  
The Panel is formed by 1 group LED indicator, 1 LCD screer and 4 keys.  
1) LED indicators are formed by 4 green lights and 1 red light.  
2) LCD can display double-row Chinese information or 4-row English information.  
3) The keys are :On/Silence key, Off key, scroll key and Enter key.  
2. Function of display Panel  
1. Displaying information of LED  
1failure indicatorred: on only when failure is detected .2The Utility indicator  
green: when the Utility is normal, it is on, when utility fails the indicator is off, when  
utility is out of range , it flashes.  
3Inverter indicatorgreen:when the inverter is working, it is onwhen it does not  
work, the indicator is off.  
4Bypass indicatorgreen:when the Bypass is working, it is onwhen it is not  
activated , the indicator is off.  
E1-20010329-C-1.0  
 
32  
Chapter 1 Product Introduction  
5Battery indicatorgreen:when the battery is discharging , it is onwhen it not  
discharging , the indicator is off.  
2. Display Information  
1UPS basic parameter information  
Displays UPS' Model and present on/off state  
2operating parameters information  
OUTPUT VOLT, OUTPUT FREQ, OUTPUT CURRENT, LOAD, INPUT VOLTAGE(U),  
INPUT VOLTAGE(V), INPUT VOLTAGE(W), INPUT FREQ, BYPASS VOLT,  
BATTERY VOLTAGE 1/CHARGING VOLT1, BATTERY VOLTAGE 2/CHARGING  
VOLT 2, BATT CAPACITY CHARGING/FULL CHARGED, INTERNAL  
TEMPERATURE.  
3alarm informationAccording to priority, from the highest to the lowest)  
UPS SHUTDOWN, AUX SUPPLY failure, OUTPUT SHORT CIRCUIT, INVERTER  
FAIL, RECTIFIER FAIL, OVER TEMP, OVERLOAD, CHARGER FAIL, BATTERY  
FAIL, NEUTRAL FAIL, I/P PHASE FAIL, BATTERY LOW shutdown imminent and  
output SWITCH FAIL.  
4failure information  
Displays the recorded failure code before the last UPS shutdown at power off.  
5Configuration Settings  
Chinese/English menu setup, OPERATING MODE setup, BOOST CHG SET, TEMP  
COMP SET, BATT CAP SET, M/S setup M/S cycle time set up , equipment address  
setup, frequency tracking range setup.  
(1) Chinese/English menu settings includes:  
Chinese  
No change  
English  
(2) working mode settings includes:  
No change  
Normal Mode  
ECO Mode  
E1-20010230-C-1.0  
 
Chapter 6 Service after Sales  
33  
(3) equalize function settings includes:  
Enable  
No change  
Disablet  
(4) temperature Compensation settings includes:  
Enable  
No change  
Disable  
(5) Battery Capacity setup means the Ah of batteries used by UPS, for example: The  
battery capacity in two battery groups( each group contains 20 batteries) is all 100Ah,  
so the battery Capacity should be set up as 100Ah, includes:  
52Ah  
24Ah  
65Ah  
76Ah  
84Ah  
100Ah  
28Ah  
38Ah  
No change  
200Ah  
130Ah  
500Ah  
400Ah  
300Ah  
(6) Master, Slave, Single setup includes: Master, Slave, Single UPS, No modification  
of the settings.  
No change  
Master  
Slave  
Single Ups  
(7) The master-slave alternated time can only be set up for the master so as to decide  
the alternated time with the slave.  
No change  
7 days  
90 days  
180 days  
30 days  
No shift  
E1-20010329-C-1.0  
 
34  
Chapter 1 Product Introduction  
(8) The equipment address setup can directly change the 3-bit digit which forms the  
equipment's address, the equipment address range is 0~255.  
(9) Frequency tracking range settings includes:  
2%  
1%  
4%  
6%  
No change  
10%  
User can select according to the power supply frequency requirement of load.  
3. Function of Keys  
Key  
Function  
When the UPS is in off state, pressing this key  
for 1 second switch on the inverter ; When the  
UPS is in alarm mode , pressing this key for 1  
second can silence the alarm ; When the UPS is  
on with no alarm, pressing this key for 4 second  
can start battery self testing.  
On/Silence〉  
When the UPS is on with no alarm, pressing this  
key for 1 second will shutdown the inverter.  
Scroll between different menus of the same  
level or complete the parameter selection .  
Used in opening the menu, confirm and return.  
Off〉  
Scroll 〉  
Enter〉  
3. Menu Operation  
See Appendix-Figure 1-2: Keypad Operation:  
E1-20010230-C-1.0  
 
Chapter 6 Service after Sales  
35  
Back to Main Menu  
Back to Main Menu  
No change  
Prohibit  
Display Present Value )  
(
Temp Compensate setup  
)
Display Present Value  
EC setup  
(
Enable  
Back to Main Menu  
Present Second  
Alarm  
Present Second  
Alarm  
Appendix-Figure 1-2 Keypad Operation  
1. first level menu  
Pressing the scroll key can switch between " failure lookup", " operating parameters" and  
"function setup". Press the enter key to enter the menus of " operating parameters" ,"  
failure lookup" or " function setup ".  
Note  
You can only enter function setupmenu by pressing the enter key for at least 5  
seconds  
2. second level menu  
A) After entering "operating parameters" menu , operating parameters' information can  
be viewed ; when the screen displays " Return to main menu" , press enter key to  
return to main menu.  
E1-20010329-C-1.0  
 
36  
Chapter 1 Product Introduction  
B) After entering " function setup " menu , function information which can be setup can  
be viewed and set by pressing the scroll key ; when the screen displays " Return to  
main menu", press enter key to return the main menu of " operating parameters ".  
C) After entering " function setup" menu , the parameters whose value is to be  
modified are displayed in reverse contrast text mode and the parameters' values can  
be changed by pressing the scroll key ; save the parameters which have already been  
modified by pressing the enter key and the parameters' value will be stored and the  
value display will switch from reverse contrast to normal text mode.  
Note  
When the equipment's address is changed, the charging between 3-bit digits are  
done through auto shifting when no key is pressed for 3 seconds.  
D) When it is in alarm state, alarm information can be viewed by pressing the scroll  
keyWhen the screen displays "Return to main menu" , press the enter key to return  
"operating parameters" main menu.  
4. Information LCD-displaying Priority  
1. LCD will display present alarm information of the highest priority if no key is pressed  
in 30 second.  
2. LCD-displaying information will not be changed when there is no alarm, the LCD will  
display level 2 sub menu such as "Output current" when no key is pressed. On the  
contrary, if the LCD isn't displaying the level 2 sub menu information and no key is  
pressed in 30 second, it will return to the state to display " Output voltage: xxx ".  
E1-20010230-C-1.0  
 
Appendix 2 Communication Port Description  
37  
Dry Contact Communication Mode  
Port Definition  
1
2
3
4
5
NC  
Utility Fail  
6
OFF  
GND  
NC  
7
8
NC  
GND  
Battery Undervolt  
9
NC  
Pin2 : When the Utility fails, this pin will change from OPEN to CLOSE, it is OPEN in normal state;  
Pin5 : When the battery voltage is low, this pin will change from OPEN to CLOSE, it is OPEN in normal state;  
Pin6 : When +5V voltage has been applied for 1 second, the UPS will shutdown;  
Pin4 : GND for signal;  
Pin7 : GND for signal;  
Other Pin: No wire connection  
Dry Contact Communication Mode can perform the following functions  
When the Utility fails, the Utility failure information is provided ;  
When the battery capacity is going to be used up, battery low information will be  
provided ;  
Control the shutdown of UPS.  
Relay Communication Mode  
Port Definition  
1
2
3
4
9
11  
12  
5
6
8
10  
13 14 15  
7
ALARM  
FAULT  
BYPASS  
BATT ¡ L¤OW  
SHUTDOWN  
Signal  
alarm  
Output signal , summary alarm , non shutdown  
alarms only.  
failure  
Output signal UPS fail , will shutdown or transfer to  
bypass.  
Bypass  
battery low  
shutdown  
Output signal, power supplying mode  
Output signal, battery mode  
input signal, UPS shutdown command  
E1-20010329-C-1.0  
 
38  
Appendix 2 Communication Port Description  
Connection  
alarm Signal  
failure Signal  
Pin . 1/2/3 normally open /common  
normally close)  
Pin . 4/5/6 normally open/common  
/normally close)  
Bypass mode signal  
battery low Signal  
Shutdown Signal  
Pin . 7/8/9 normally open/common  
/normally close)  
Pin . 10/11/12 normally open/  
common / normally close)  
Pin .14/15th Pinshort circuited  
normally , UPS shutdown when open  
circuit )  
Connection of relays  
alarm Signal Relay  
In normal state, Pin . 2/3 are short  
circuited, Pin . 1/2 pins are short  
circuited when alarm is activated .  
In normal state, Pin . 5/6 are short  
circuited, No. 4/5 pins are short  
circuited when signal is activated.  
failure Signal Relay  
Bypass mode Signal Relay In normal state, Pin . 8/9 are short  
circuited, Pin .7/8 are short circuited  
when signal is activated.  
battery low Signal Relay  
Shutdown Signal Relay  
In normal state, Pin . 11/12 are short  
circuited_, Pin . 10/11 are short  
circuited when signal is activated .  
Invalid when pin 14/15 are open  
circuit , UPS will shutdown .  
Relay Contact Capacity  
250VAC 2A or 30VDC  
2A  
E1-20010329-C-1.0  
 
Appendix 3 Product Specification 39  
Appendix 2 Product Specification  
Capacity  
Model  
10kVA  
15kVA  
20kVA  
GXT2-3X1 -0200L  
GXT2-3X1  
-0100L  
GXT2-3X1  
-0150L  
Input  
Input Mode  
Three-phase/four-line input  
400 Vac( line to line)  
rated voltage  
voltage range  
1. If the Phase to neutral voltage is in the range of 176-276Vac, the UPS  
can work normally with full load;  
2. If the phase voltage is in the range of 120-176Vac, the ability of the  
UPS to supply the load will decrease linearly with the decreasing of the  
input voltage, it can work with half load when the voltage is 120Vac.  
3. Working under Phase failure condition:  
1if one Phase failure, the other two phases are normal, the UPS can  
supply 50 % rated load at most;  
2if input two phases failure, the other one phase is normal, the UPS can  
supply 25 % rated load at most  
Frequency  
45~55Hz  
Power Factor  
0.95 At rated load and rated voltage  
0.7  
Output  
Power Factor  
Voltage  
230Vac±3%  
Line regulation  
< ±1% 0~100% Linear Load)  
< ±2% 0~100% Linear Load)  
Load e  
regulation  
Voltage  
< 4%0-100% Linear Load;< 5%0-100% nonlinear Load)  
Distortion  
Frequency  
Output  
In normal mode, when the Bypass frequency is in the tracking range  
50Hz±10%, 6%, 4%, 2% and 1% optional, defailure value is ±  
4%,the inverter Output will track Bypass frequency;when the Bypass  
frequency is beyond the limit, the inverter Output frequency is 50Hz±  
0.2%;in battery mode, the inverter Output frequency is 50Hz±0.2%  
Frequency slew  
rate  
1 Hz/s  
Inverter Overload be able to withstand 105~125% rated load for 10min;then the UPS  
Capability  
Utility or  
Battery)  
transfers to bypass output;  
be able to withstand 125~150% rated load for 1min,then the UPS transfers  
to bypass output;  
When Load Power> 150%,the inverter can work for longer than  
200ms,then the UPS transfers to bypass output;  
Bypass Overload If the load current is in the range of 135%-155% rated output current,the  
Ability  
UPS will be disconnected from the load after 15min;  
If the load current is more than 155% rated current,the UPS will be  
disconnected from the load after 3minif extreme big current occurs in  
3min,the disconnection time is decided by the release time of bypass  
breaker)  
Crest Factor  
3:1  
E1-20010329-C-1.0  
 
40  
Appendix 3 Product Specification  
Capacity  
Model  
10kVA  
15kVA  
20kVA  
GXT2-3X1  
-0100L  
GXT2-3X1  
-0150L  
GXT2-3X1 -0200L  
Bypass Voltage  
120~253Vac non- ECO mode)  
Efficiency in  
Normal Mode  
(100% Linear  
Load)  
> 89%  
> 89%  
> 89%  
> 88%  
Efficiency in  
battery mode  
(100% Linear  
Load)  
> 88%  
> 88%  
interrupt Utility Failure  
time  
0ms  
Transferring  
< 4ms  
between inverter  
and Bypass  
Synchronized )  
Voltage transient response At the Resistive Load from 0~100% or 100%~0, the Output dynamic  
voltage change range is lower than 5% Rated Voltage. Transient recovery  
time is less than 60ms.  
Audible Noise  
< 55dB1m< 60dB2m)  
LCD  
Display  
Safety  
Passed CCEE certification,complied with EN60950 and EN50091-1.  
Line Voltage 554Vac,1 hourstatic)  
Highest Input Voltage :  
EMC  
Conduction:EN55022 Class A  
Radiation: EN55022 Class A  
Harmonic current:THD<25%With input isolated transformer connected)  
Immunity  
DC offset  
EN61000-4-2.3.4.5.6.8.11 Level III  
Lower than ±500mVdc  
MTBF(Inverter )  
MTBF(System)  
30000 hours ambient temperature is 25,rated condition)  
150000 hours Response time + maintenance time should be less than 24  
hours)  
MTTR (Board Maintenance)  
Insulation Resistance  
dielectric Strength  
1 hourBoard Maintenance)  
> 2MW 500Vdc)  
Output to earthInput to earth 2820Vdc,leakage current<3.5mA, 1min  
with no arc and breakdown  
Surge Protection  
Protection Level  
Satisfy the IV type of IEC60664-1, that is the ability to withstand  
1.2/50uS+8/20uS exceeds 6kV/3kA.  
IP21  
E1-20010329-C-1.0  
 
Appendix 3 Product Specification 41  
Capacity  
Model  
10kVA  
15kVA  
20kVA  
GXT2-3X1 -0200L  
GXT2-3X1  
-0100L  
GXT2-3X1  
-0150L  
Environment Condition  
E1-20010329-C-1.0  
 
42 Appendix 4 Accessories  
Appendix 3 Accessories  
Optional Product name  
battery cabinet  
Product Model  
UF-B0100-38  
Remark  
20 38Ah batteries  
20 65Ah batteries  
20 100Ah batteries  
UF-B0100-65  
UF-B0100-100  
E1-669001-20010230-C-1.0  
 

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