Liebert GXT2 - 3X1 User Manual

Download

GXT2 - 3X1 Intelligent, High

Frequency, Online UPS

10/15/20kVA USER MANUAL

E1-20010329-C-1.0

Liebert Corporation

IMPORTANT INSTRUCTIONS FOR SAFE USE

The UPS must be commissioned by a Liebert - approved engineer before it is put into service. Failure to observe this condition will invalidate any implied warranty .

Do not apply power to this equipment before it has been commissioned by a Liebert - approved engineer. He will validate the installation work and install ' site information ' into the micro-controller memory. This information is required to substantiate any warranty claims that might be made.

If you find any problems with the procedures in this manual, seek immediate assistance from the Liebert distributor or agent from whom you purchased the equipment.

Do not attempt to service this product yourself .It contains no user serviceable parts. All servicing must be referred to qualified personnel.

Qualified personnel should be consulted if liquid spills into the product.

The UPS is for indoor use only.

It must be protected from rain or excessive moisture and installed in clean environment , free from flammable liquids, gasses , or corrosive substances. Do not put drinks, plants, or any other containers holding liquids, on top of the unit.

Ventilation grills are provided beneath and at the rear of the cabinet. Do not block or cover these openings otherwise overheating may occur and UPS operation become unreliable.

Never poke anything through the ventilation holes or openings.

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

Chapter 1 Introduction

1.1 Application

1.3 System Function Block

1.4 Features

Chapter 2 Installation

2.1 Unpacking Inspection

2.2 Outline and Panel Description

2.2.1 Outline

2.2.2 Front Panel

2.2.3 Rear Panel

2.3 Installation

2.3.1 Important Note

2.3.2 Installation Procedure

2.4 Connection of External Batteries

Chapter 3 Operation

3.1 Operating Mode

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

Chapter 4 Maintenance and Storage

I. Battery Maintenance II. Keep Air Vent Unblocked III. UPS State Check IV. Function Inspection

Chapter 5 Troubleshooting

Appendix 1 LCD Panel Displays and Operation

1. Constitution of Display Panel

2. Function of display Panel

3. Menu Operation

4. Information LCD-displaying Priority

Relay Communication Mode

Appendix 2 Product Specification

Appendix 3 Accessories

6 Chapter 1 Product 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 10kVA 15kVA 20kVA

Model GXT2-3X1-0100L GXT2-3X1-0150L GXT2-3X1-0200L

Description Extended Battery

Cabinet is required

Chapter 1 Introduction

Extended Battery

Cabinet is required

Extended Battery

Cabinet is required

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).

Short circui t c able

for hot standby

Utility

bypass breaker

Rectifier

Utility Switch

Charger

Battery Group1

Maintenance bypas s

bypass

Inverter

Battery Group 2

Figure 1-1 single UPS module

Elec tronic

Transfer

Switch

Maint enance

switch

Load

E1-20010329-C-1.0

Chapter 1 Product Introduction 7

Maint enance bypas s

Utility

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:

Back up

UPS

bypas s B reaker

Utility Break er

Charger

bypas s

Recti fier

Battery

Group1

Group 2

Figure 1-2 hot-standby system

Inverter

Elec tronic

Transfer

Switch

Master UPS

Load

Maint enance

switch



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

E1-20010329-C-1.0

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

Chapter 2 Installation 9

LCD Display Panel

Ventilation holes on front panel

Figure 2-1 UPS Front view

Supporting caster

Adjustable Footpad

E1-20010329-C-1.0

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

On/Silence Key

Off Key

Figure 2-3 LCD display Panel

Scroll Key

Battery

Inverter

Bypass

LCD Display

Enter Key

E1-20010329-C-1.0

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.

Bypass Switch Used for controlling the bypass input to UPS

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 terminals

Contact closure port Provide Optical Coupler Dry Contact control

Alarm relay port

10kVA UPS uses three-pole 63A/250VAC breaker 15/20kVA UPS uses three-pole 100A/250VAC breaker

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

Used for UPS input/output cable connection and external battery connection for UPS

signal, for OS and UPS shutdown.

bProvide relay Dry Contact alarm/ control signal,

E1-20010329-C-1.0

12 Chapter 2 Installation

Heat Dissipation and 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.

It can be included in monitoring system defined by users .

Used for heat dissipation and ventilation of UPS

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 system）or 125A（ for 15kVA/20kVA system）on 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

U V

line

Input neutral

line

U P

output hot

line

output

neutral line

Load

4-pole Interactive

circ uit break er

Figure 2-5（a） right cable connection

E1-20010329-C-1.0

Chapter 2 Installation 13

U V

N/E



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

Input hot

line

Input neutral

line

Figure 2-5 （b） wrong cable connection

U P

output hot

line

output

neutral li ne

Load

1. Prior to any wire connection, please confirm that all the input and output circuit breakers are in “OFF”state;

2. As shown in Figure 2-6, connect the input cables（three hot lines, neutral line and

earth line）to 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 line）of 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.

E1-20010329-C-1.0

14 Chapter 2 Installation

Battery 1¡ °+¡ ±Terminal

Battery1 + Terminal

Battery 1¡ °-¡ ±Te rm in al

Battrery1 - Terminal

Battery 2¡ °+¡ ±Te r mi na l

Battery2 + Terminal

Battery 2¡ °-¡ ±Te r mi n al

Battery2 - Terminal

Figure 2-6（a） 10kVA Input/output terminals( upper terminals' block）

Figure 2-6（b）10kVA Input/output terminals (lower terminals' block）

Input GND

Input Neutral line

Input U phase line

Input V phase line

Input W phase line

B_L

Hot standby B_L End

Hot standby L1 End

B_N

Hot standby B_N End

Output phase line

Output GND

Output Neutral line

Battery 1¡ °+¡ ±Te r mi n al

Battery1 + Terminal

Battery1 - Terminal

Battery 1¡ °-¡ ±Te rm i na l

Battery 2¡ °+¡ ±Terminal

Battery2 + Terminal

Battery 2¡ °-¡ ±Terminal

Battery2 - Terminal

Figure 2-6（c） 15/20kVA Input/output terminals (upper terminals' block）

Input GND

Input Neutral line

Input U phase line

B_L

Hot standby B_L End

Hot standby L1 End

Input V phase line

Input W phase line

B_N

Hot standby B_N End

Output phase line

Output GND

Output Neutral line

E1-20010329-C-1.0

Chapter 2 Installation 15

Figure 2-6（d） 15/20kVA 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 line；input V or W phase lines and battery lines should be 10AWG or 6mm

For 15/20kVA system, at least 3AWG or 25mm

copper wire at least.

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 line；input V or W phase lines and battery lines should be 5AWG or 16mm

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;

E1-20010329-C-1.0

16 Chapter 2 Installation

5. Turn the switch on the battery cabinet to " ON " position.



Note

Battery 2

Battery 1

Figure 2-10 connection of external batteries

Battery Cabinet

Breaker of Battery Cabinet

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 UPS（the short

circuit cable between hot standby L1 terminal and B_L terminal）;

3. Connect the wires according to Figure 2-11.

E1-20010329-C-1.0

Chapter 2 Installation 17

Backup UPS

-N+

WVUNL

Input V phase line

Input GND

Input Neutral line

Input W phase line

Input V phase line

B_LL1 B_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

+-+

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

Master UPS

VUN

WLN

Output phase line

B_LL1 B_N

Output Neutr al line

Output GND

Figure 2-11（a） Wire connection for 10kVA Master-slave hot standby UPS

E1-20010329-C-1.0

18 Chapter 2 Installation

Backup UPS

+-+- B_LL1 B_N

NUVWLN

Input GND

Input Neutral lin e

Input V phase line

Input W phase li ne

Output neutral l ine of Backup UPS is connec ted to the N terminal of Master's bypass

Output phase line of Bac kup UPS is connected to the L terminal of Master's bypass

Output GND in Parall el

Input GND in Parallel

Input Neutral line in Parallel

Input U phese line in Paral lel

Input V phase line in Paral lel

Input W phase li ne i n parallel

Master UPS

-++- B_LL1 B_N

NUVWLN

Output phase line

Output Neutral line

Output GND

Figure 2-11（b） Wire 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.

E1-20010329-C-1.0

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.

Chapter 3 Operation 19

Chapter 3 Operation



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

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 .

OUTPUT VOLT

220.0V

Figure 3-1

generator capacity be 1.5~2 times of UPS rated capacity.

E1-20010329-C-1.0

20 Chapter 3 Operation



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.

OUTPUT VOLT

215.0V

Figure 3-2

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.

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 " .

OUTPUT VOLT

220.0V

Figure 3-3



Note:

E1-20010329-C-1.0

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 on（green）, as

shown in Figure 3-4.

Chapter 3 Operation 21

OUTPUT VOLT

215.0V



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.

Figure 3-4

E1-20010329-C-1.0

22 Chapter 3 Operation

3.2 Operation

3.2.1 Startup and Initialization

OUTPUT VOLT

215.0V

Figure 3-5

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.

3.2.2 Turn On the Inverter

OUTPUT VOLT

215.0V

Figure 3-6

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.

E1-20010329-C-1.0

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

E1-20010329-C-1.0

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.

2. Overload process is same with the above "Start from the utility power".

OUTPUT VOLT

220.0V

Figure 3-9



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. 3-10

（b）.

OUTPUT VOLT

220.0V

Battery Fault

Figure 3-10（a） Figure 3-10（b）

E1-20010329-C-1.0



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.

Chapter 3 Operation 25

OUTPUT VOLT

215.0V

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.

Figure 3-11

E1-20010329-C-1.0

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 15℃ and 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.

Chapter 4 Maintenance and Storage 27



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.

E1-20010329-C-1.0

28 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

No.

1 No panel display and

2 The Utility is normal,

3 No alarm is given, but

4 No panel display and

5 The Utility indicator

6 The buzzer beeps

7 The fault indicator is on

8 The fault indicator is

Phenomena

Description

system self-test when the Utility switch is in the ON position.

but the Utility indicator does not turn to and the UPS operates in Battery mode.

there is no voltage output.

system self-test when the Utility switch is in the ON position.

flashes.

every 0.5 second, and

the LCD displays

"OVERLOAD"

and the LCD displays

"BATTERY FAIL".

on , and the LCD displays "CHARGER FAIL".

Cause Action

A. Utility hasn't been introduced into the system; B. Input undervoltage.

A. The input switch is turned off; B. The input power line is not properly connected;

The output power line is not properly connected.

A. Utility hasn't been introduced into the system; B. Input undervoltage.

The Utility voltage is outside tolerances.

Overload. Disconnect some loads

A. The external battery

switch is turned off, or

its lead is not properly

connected;

B. Battery reverse

connection;

C. Battery damaged;

Charger fault Contact the Liebert or its

Use voltmeter to check whether the input Utility voltage is within tolerances.

A. Turn on the input switch; B. Make sure that the input power line is properly connected;

Make sure that the output power line is properly connected.

Use voltmeter to check whether the input Utility voltage is within tolerances.

If the UPS is operating in Battery mode, please note the battery backup time.

from the UPS.

A. Check whether the external battery switch is turned on and its lead is properly connected; B. Check whether the battery is reversely connected; C. Contact the distributor for battery replacement;

authoriged agent for charger replacement/maintenanc e.

E1-20010329-C-1.0

30 Chapter 5 Handling Abnormal Problem

Sequence

No.

9 The UPS has reduced

10 The buzzer beeps, the

11 The buzzer beeps, the

12 The buzzer beeps, the

13 Abnormal noise or

Phenomena

Description

battery time.

fault indicator shines, and the LCD displays "TEMP OVER"

fault indicator is on , and the LCD displays "OUTPUT SHORT"

fault indicator shines, and the LCD displays "RECTIFIER FAIL", "INVERTER FAIL", "AUX SUPPLY FAIL", or "OUTPUT FAIL".

smell inside the UPS.

Cause Action

A. The battery is not fully charged; B. The battery is not able to hold a full charge due to age.

Internal overtemperature

UPS output short-circuit.

UPS internal fault The UPS needs

UPS internal fault Turn off the UPS and cut

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. 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.

Restart the UPS after confirming that load short-circuit does not exist.

maintenance, please contact the Liebert or its authoriged agent immediately .

off the power input 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.

Fault indicator (red)

Silence Key

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.

Utility indicator (green)

Off Key

Scroll Key

Appendix-Figure 1-1 LCD Panel

Battery indicator (green)

Inverter indicator (green)

Bypass indicator (green

LCD Display Panel

Enter Ke

3) The keys are :On/Silence key, Off key, scroll key and Enter key.

2. Function of display Panel

1. Displaying information of LED

1）failure indicator（red）: on only when failure is detected .2）The 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.

）Inverter indicator（green）:when the inverter is working, it is on；when it does not

work, the indicator is off.

）

Bypass indicator（green）:when the Bypass is working, it is on； when it is not

activated , the indicator is off.

E1-20010329-C-1.0

32 Chapter 1 Product Introduction

5）Battery indicator（green）:when the battery is discharging , it is on； when it not

discharging , the indicator is off.

2. Display Information

1）UPS basic parameter information

Displays UPS' Model and present on/off state

）operating 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.

）alarm information（According 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.

）failure information

Displays the recorded failure code before the last UPS shutdown at power off.

）

Configuration 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

English

No change

(2) working mode settings includes:

Normal Mode ECO Mode

No change

E1-20010230-C-1.0

(3) equalize function settings includes:

Chapter 6 Service after Sales 33

Enable

Disablet

No change

(4) temperature Compensation settings includes:

Enable

Disable

No change

(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:

24Ah

No change

28Ah

38Ah

52Ah

65Ah

76Ah

84Ah

300Ah400Ah500Ah

100Ah130Ah200Ah

(6) Master, Slave, Single setup includes: Master, Slave, Single UPS, No modification of the settings.

Master Slave Single Ups

No change

(7) The master-slave alternated time can only be set up for the master so as to decide the alternated time with the slave.

7 days

30 days

E1-20010329-C-1.0

90 days 180 days

No shift

No change

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:

User can select according to the power supply frequency requirement of load.

3. Function of Keys

Key Function

〈On/Silence〉

〈

Off〉

〈

Scroll 〉

〈Enter〉

3. Menu Operation

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.

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.

10%

No change

See Appendix-Figure 1-2: Keypad Operation:

E1-20010230-C-1.0

Back to Main Menu

Enter

Chapter 6 Service after Sales 35

scroll

...

scroll

Run Para

Operating ParametersAlarm Infor

Back to Main Menu

scroll

...

scroll

Basic Infor

scroll

Fuction Setup

Fault record

Display Present Valu e

(

Maintain 5S

Temp Compensate setup

scroll

Enter

Display Present Value

(

Back to Main Menu

scroll

Present Second Alarm

Enter

Present Second Alarm

scroll

EC setup

scroll

cycle

...

scroll

Enter

Run Para

Enter Enter

No change

)

Enter

)

Prohibit

scroll

Enable

Enter

Run Para

Enter

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 setup”menu 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

；

key

When 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

Utility Fail

GND

Battery Undervolt

OFF

GND

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

12 3 4

ALARM FAULT

Signal

alarm Output signal , summary alarm , non shutdown

failure Output signal UPS fail , will shutdown or transfer to

Bypass Output signal, power supplying mode

battery low Output signal, battery mode

shutdown input signal, UPS shutdown command

alarms only.

bypass.

BYPASS

101112 13 14 15

BATT ¡ ¤LOW

SHUTDOWN

E1-20010329-C-1.0

38 Appendix 2 Communication Port Description

Connection

alarm Signal

failure Signal

Bypass mode signal

battery low Signal

Shutdown Signal

Pin . 1/2/3 normally close Pin . 4/5/6 /normally close Pin . 7/8/9 /normally close Pin . 10/11/12 common / normally close Pin .14/15th Pin normally , UPS shutdown when open circuit

（

normally open /common

）

（normally open/common

）

（normally open/common

）

（normally open/

）

（short circuited

）

Connection of relays

alarm Signal Relay In normal state, Pin . 2/3 are short

failure Signal Relay In normal state, Pin . 5/6 are short

Bypass mode Signal Relay In normal state, Pin . 8/9 are short

battery low Signal Relay In normal state, Pin . 11/12 are short

Shutdown Signal Relay Invalid when pin 14/15 are open

circuited, Pin . 1/2 pins are short circuited when alarm is activated .

circuited, No. 4/5 pins are short circuited when signal is activated.

circuited, Pin .7/8 are short circuited when signal is activated.

circuited_, Pin . 10/11 are short circuited when signal is activated .

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 10kVA 15kVA 20kVA

Model GXT2-3X1

-0100L

Input Input Mode Three-phase/four-line input

rated voltage 400 Vac( line to line)

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:

）if one Phase failure, the other two phases are normal, the UPS can

supply 50 % rated load at most;

）if input two phases failure, the other one phase is normal, the UPS can

supply 25 % rated load at most

Frequency 45~55Hz

Power Factor

Output Power Factor 0.7

Voltage

Line regulation

Load e

regulation

Voltage

Distortion

Output Frequency In normal mode, when the Bypass frequency is in the tracking range

Frequency slew

rate

Inverter Overload Capability

（Utility or

Battery

）

Bypass Overload Ability

Crest Factor 3:1

≥0.95 At rated load and rated voltage

±3%

230Vac

± 1% （0~100% Linear Load）

± 2% （0~100% Linear Load）

（

< 4%

0-100% Linear Load）;< 5%（0-100% nonlinear Load）

（

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%

 1 Hz/s

be able to withstand 105~125% rated load for 10min;then the UPS 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;

If the load current is in the range of 135%-155% rated output current,the 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 3min

3min,the disconnection time is decided by the release time of bypass

）

breaker

GXT2-3X1

-0150L

GXT2-3X1 -0200L

（if extreme big current occurs in

E1-20010329-C-1.0

40 Appendix 3 Product Specification

Capacity 10kVA 15kVA 20kVA

Model GXT2-3X1

-0100L

interrupt time

Voltage transient response At the Resistive Load from 0~100% or 100%~0, the Output dynamic

Audible Noise

Display LCD

Safety Passed CCEE certification,complied with EN60950 and EN50091-1.

Highest Input Voltage :

EMC Conduction:EN55022 Class A

Immunity EN61000-4-2.3.4.5.6.8.11 Level III

DC offset

MTBF(Inverter )

MTBF(System)

MTTR (Board Maintenance)

Insulation Resistance

dielectric Strength

Surge Protection Satisfy the IV type of IEC60664-1, that is the ability to withstand

Protection Level IP21

Bypass Voltage

Efficiency in Normal Mode (100% Linear Load)

Efficiency in battery mode (100% Linear Load)

Utility Failure 0ms

Transferring between inverter and Bypass

（Synchronized ）

120~253Vac

> 89% > 89% > 89%

> 88% > 88% > 88%

< 4ms

voltage change range is lower than 5% Rated Voltage. Transient recovery time is less than 60ms.

（1m） < 60dB（2m）

< 55dB

Line Voltage 554Vac,1 hour

Radiation: EN55022 Class A

Harmonic current:THD<25%

Lower than

30000 hours

150000 hours

）

hours

（Board Maintenance）

1 hour

（

> 2MW

（

with no arc and breakdown

1.2/50uS+8/20uS exceeds 6kV/3kA.

500Vdc）

Output to earth，Input to earth ）2820Vdc,leakage current<3.5mA, 1min

GXT2-3X1

-0150L

（

non- ECO mode）

±500mVdc

（

ambient temperature is 25℃,rated condition）

（Response time + maintenance time should be less than 24

GXT2-3X1 -0200L

（static）

（With input isolated transformer connected）

E1-20010329-C-1.0

Appendix 3 Product Specification 41

Capacity 10kVA 15kVA 20kVA

Model GXT2-3X1

-0100L

GXT2-3X1

-0150L

GXT2-3X1 -0200L

Environment Condition

E1-20010329-C-1.0

42 Appendix 4 Accessories

Optional Product name Product Model Remark

battery cabinet UF-B0100-38 20 38Ah batteries

UF-B0100-65 20 65Ah batteries

UF-B0100-100 20 100Ah batteries

Appendix 3 Accessories

E1-669001-20010230-C-1.0

Liebert GXT2 - 3X1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual