Liebert 700VA, GXT3, 3000VA User Manual

Liebert® GXT3™ UPS 230V 700VA-3000VA

User Manual

AC Power
For Business-Critical Continuity™

TABLE OF CONTENTS

IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

SAVE THESE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

GLOSSARY OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.0 PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Available Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 Appearance and Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3.1 Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3.2 Rear Panel Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.4 Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.5 Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.5.1 Mains (AC) Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.5.2 Manual Bypass Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.5.3 Battery Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.5.4 Battery Recharge Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.5.5 Frequency Converter Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

2.1 Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2 What’s Included . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Preparation for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3.1 Installation Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4.1 Tower Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4.2 Rack Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.5 Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.5.1 Connecting to AC Mains and Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.5.2 Connecting Battery Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.6 Connecting Communication Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.6.1 Connecting USB Communication Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.6.2 Installing the Optional Liebert

IntelliSlot® Card and Communication Cables . . . . . . . . . . . 16

3.0 OPERATION AND DISPLAY PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

3.1 Control Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1.1 On/Alarm Silence/Manual Battery Test button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1.2 Standby/Manual Bypass button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.2.1 Level Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.2.2 UPS Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

i

4.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4.1 Startup Checklist for the Liebert GXT3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2 Starting the UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.3 Manual Battery Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.4 Manual Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.5 Shut Down the Liebert GXT3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.6 Disconnecting Input Power from the Liebert GXT3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.0 COMMUNICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.1 Liebert IntelliSlot Communication Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.1.1 Liebert MultiLink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.2 USB Port Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.2.1 Configuration Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.3 Terminal Block Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.3.1 Any Mode Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.3.2 Battery Mode Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.3.3 On Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.3.4 Low Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6.1 Replacing the Internal Battery Pack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.1.1 Battery Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.2 Battery Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.3 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.4 Checking UPS Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.5 Checking UPS Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

7.1 UPS Symptoms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.1.1 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.1.2 Audible Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.0 BATTERY CABINET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

9.0 S

9.1 Product Warranty Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

PECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

ii

FIGURES

Figure 1 Liebert GXT3-700RT230 - GXT3-3000RT230 UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2 Rear panel components, Liebert GXT3 230V 700VA, 1000VA and 1500VA models. . . . . . . . . . . . 5

Figure 3 Rear panel components, Liebert GXT3 230V 2000VA models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 4 Rear panel components, Liebert GXT3 230V 3000VA models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 5 Operating principle diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 6 Support bases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 7 Remove the front plastic bezel cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 8 Rotate the operation and display panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 9 Tower installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 10 Pulling inner member from each bracket assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 11 Installing rear member of each bracket assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 12 Installing front member of each bracket assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 13 Fastening rear member and front member together . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 14 Installing inner members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 15 Installing rack-mount ears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 16 Insert the UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 17 Operation and display panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 18 Battery level indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 19 Load level indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 20 Terminal Block Communication pin layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 21 Removing the front plastic bezel cover and battery door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 22 Disconnecting the battery plug and battery connector (front view). . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 23 Pulling out the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 24 Battery level indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 25 Battery cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

TABLES

Table 1 UPS models, power ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 2 Specification of input circuit breaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 3 Functions of the On/Alarm Silence/Manual Battery Test button . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 4 Functions of the Standby/Manual Bypass button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 5 UPS status indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 6 Output voltage option, all models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 7 Replacement battery pack model numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 8 Indicator descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 9 Audible alarm description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 10 Troubleshooting table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 11 Specifications of GXT3-700RT230 and GXT3-1000RT230 UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 12 Specifications of the Liebert GXT3-1500RT230, GXT3-2000RT230 and GXT3-3000RT230 . . . . 34

Table 13 Operating temperature parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 14 Battery cabinet specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 15 Battery run times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

iii

iv

IMPORTANT SAFETY PRECAUTIONS

!

WARNING

Observe all cautions and warnings in this manual. Failure to do so may result in serious
injury or death.

Refer all UPS and battery service to properly trained and qualified service personnel. Do not
attempt to service this product yourself.

Opening or removing the cover may expose you to lethal voltages within this unit even when
it is apparently not operating and the input wiring is disconnected from the electrical source.

Never work alone.

SAVE THESE INSTRUCTIONS

This manual contains important safety instructions that must be followed during the installation and
maintenance of the UPS and batteries. Read this manual thoroughly before attempting to install or
operate this UPS.

UPS Safety Notes

The UPS contains no user-serviceable parts except the internal battery pack. Do not remove the
cover. Removing the cover may result in electric shock and will invalidate any implied warranty.

The UPS has an internal battery, so the output receptacles of the UPS may carry live voltage even if
the UPS is not connected to mains input power.

Before moving or rewiring the UPS, disconnect mains input power and the battery and make sure
that the UPS is completely shut down. Otherwise, the output terminal may carry live voltage,
presenting an electric shock hazard.

To ensure human safety and normal UPS operation, the UPS must be properly grounded before use.

When the UPS is connected to an IT power distribution system, the short-circuit protection device
must be installed on the neutral line.

Install and use the UPS in the following environments:

• Temperature: 0°C to 40°C (32 - 104°F); relative humidity: 0% to 95%, non-condensing)

• Out of direct sunlight

• Away from heat source

• Stable surface, not subject to vibrations or shocks

• Away from dust and other particulates

• Away from corrosive substances, salts and flammable gases

Keep the air inlet and outlet of the UPS unobstructed. Poor ventilation will increase the UPS internal
temperature and can shorten the life of the UPS and its batteries.

Keep liquid and other foreign objects away from the UPS.

In case of fire, use a dry chemical fire extinguisher to put out the fire. Using a fluid fire extinguisher
may cause electric shock.

This UPS is not intended for use with life support and other designated critical devices. Maximum
load must not exceed that shown on the UPS rating label. This UPS is designed for data processing
equipment. If uncertain, consult your local dealer or Emerson Network Power

®

representative.

1Liebert

®

GXT3

™

Battery Safety

!

!

CAUTION

Do not dispose of the battery in a fire. The battery may explode.
Do not open or damage the battery. Released electrolyte is toxic and is harmful to skin and

eyes. If electrolyte comes into contact with the skin, wash the affected area immediately with
plenty of clean water and get medical attention.

CAUTION

A battery can present a risk of electrical shock and high short-circuit current. The following
precautions should be observed when working on batteries:

• Remove watches, rings and other metal objects.

• Use tools with insulated handles.

• Wear rubber gloves and boots.

• Do not lay tools or metal parts on top of batteries.

• Disconnect charging source prior to connecting or disconnecting battery terminals.

• Determine if the battery is inadvertently grounded. If it is inadvertently grounded, remove
the source of the ground. Contact with any part of a grounded battery can result in
electrical shock. The likelihood of such shock will be reduced if grounds are removed during
installation and maintenance (applicable to a UPS and a remote battery supply not having
a grounded supply circuit).

ELECTROMAGNETIC COMPATIBILITY—The Liebert GXT3 series complies with the limits for a
Class A digital device. Operating this device in a residential area is likely to cause harmful
interference that users must correct at their own expense.

The Liebert GXT3 series complies with the requirements of EMC Directive 2004/108/EC and the
published technical standards. Continued compliance requires installation in accordance with these
instructions and use of accessories approved by Emerson

®

.

Information for the Protection of the Environment

UPS SERVICING—This UPS makes use of components dangerous for the environment (electronic
cards, electronic components). The components removed must be taken to specialized collection and
disposal centers.

NOTICE TO EUROPEAN UNION CUSTOMERS: DISPOSAL OF OLD APPLIANCES—This
product has been supplied from an environmentally aware manufacturer that complies with the
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/CE.

The “crossed-out wheelie bin” symbol at right is placed on this product to
encourage you to recycle wherever possible. Please be environmentally
responsible and recycle this product through your recycling facility at its end
of life. Do not dispose of this product as unsorted municipal waste. Follow
local municipal waste ordinances for proper disposal provisions to reduce the
environmental impact of waste electrical and electronic equipment (WEEE).

For information regarding the scrapping of this equipment, please browse

http://www.eu.emersonnetworkpower.com (“Products session” or

“Contact us” session) or call our worldwide technical support.

• Toll Free: 00 80011554499

• Toll Number Based in Italy: [phone]

Liebert® GXT3

™

2

GLOSSARY OF SYMBOLS

!

PbH2SO4

-

+

R

Risk of electrical shock

Indicates caution followed by important instructions

AC input

AC output

i

Requests the user to consult the manual

Indicates the unit contains a valve-regulated lead acid battery

Recycle

DC voltage

Equipment grounding conductor

Bonded to ground

AC voltage

ON/Alarm Silence/Battery Test

OFF/Bypass

WEEE

3Liebert

®

GXT3

™

1.0 PRODUCT DESCRIPTION

The Liebert GXT3 is a compact, online uninterruptible power system (UPS) that continuously
conditions and regulates its output voltage. The Liebert GXT3 is designed to supply microcomputers
and other sensitive electronic equipment with clean sine wave input power, 700VA to 3000VA at
230V.

Upon generation, AC power is clean and stable. However, during transmission and distribution it is
subject to voltage sags, spikes and complete failure that may interrupt computer operations, cause
data loss and damage equipment.

The Liebert GXT3 protects equipment from these disturbances. The Liebert GXT3 continuously
charges its batteries from the mains, enabling it to supply power to connected loads, even when the
mains fail.

This section describes the UPS, its features, models, appearance and components, operating
principles and operating mode.

1.1 Features

The UPS includes the following features:

• Intelligent battery management to extend the battery life

• Operation and display panel with LED for monitoring load percentage and battery capacity
independently

• Flexible network management with Liebert MultiLink

• Fan fault self-inspection and automated diagnostic function

• Intelligent fan operation, automatically changing rotation speed depending on system
requirements, to decrease power consumption and noise

• Input circuit breaker to ease recovery from overloads

• CE mark and safety approval from CE

• Communication options: USB port, Liebert IntelliSlot

• Dry contacts for remote monitoring

• Input power factor greater than 0.99

• Output voltage selection function

Product Description

®

software

®

port and terminal block communication

1.2 Available Models

Available models of the UPS are shown in Table 1:

Table 1 UPS models, power ratings

Model Nominal Power Rating

GXT3-700RT230 700VA/630W

GXT3-1000RT230 1000VA/900W

GXT3-1500RT230 1500VA/1350W

GXT3-2000RT230 2000VA/1800W

GXT3-3000RT230 3000VA/2700W

Liebert® GXT3

™

4

Product Description

Operation and Display Panel

Ventilation Slots

C14 Input Receptacle

External Battery
Connector

Cooling Fan

Input Circuit
Breaker

C13 Output Receptacles

Liebert IntelliSlot Port

USB Port

Terminal Block
Communication

C20 Input Receptacle

External Battery
Connector

Cooling Fan

C13 Output Receptacles

Liebert IntelliSlot Port

USB Port

Terminal Block
Communication

Input Circuit
Breaker

1.3 Appearance and Components

1.3.1 Appearance

The Liebert GXT3 rack/tower models in various power ratings have the same general appearance,
controls and features (see Figure 1). The various rack/tower models differ largely in the type of
receptacles each has.

Figure 1 Liebert GXT3-700RT230 - GXT3-3000RT230 UPS

1.3.2 Rear Panel Features

The rear panel of the Liebert GXT3 has these features:

•USB port

• Cooling fan

• C19 output receptacle (GXT3-3000RT230 only)

• Six C13 output receptacles

• Input circuit breaker

• Liebert IntelliSlot

• Communication terminal block

• Input receptacle

Figure 2 Rear panel components, Liebert GXT3 230V 700VA, 1000VA and 1500VA models

®

Figure 3 Rear panel components, Liebert GXT3 230V 2000VA models

5Liebert

®

GXT3

™

Figure 4 Rear panel components, Liebert GXT3 230V 3000VA models

C20 Input Receptacle

Output Circuit
Breakers

Cooling Fan

C13 Output
Receptacles

Liebert IntelliSlot Port

USB Port

Terminal Block
Communication

C19 Output
Receptacle

Input Circuit
Breaker

External Battery
Connector

L1

Dynamic

Bypass

Input

DC-to-DC

Converter

Rectifier/

PFC

Inverter

Battery

Battery

Charger

L1

TVSS & EMI/

RFI Filters

N

Output

N

G

G

1.4 Major Components

The operating principle of the UPS is shown in Figure 5.

Figure 5 Operating principle diagram

Product Description

Liebert® GXT3

The UPS is composed of mains input, TVSS and EMI/RFI filters, rectifier/PFC, inverter, battery
charger, DC-to-DC converter, battery, dynamic bypass and UPS output.

Transient Voltage Surge Suppression (TVSS) and EMI/RFI Filters

The Liebert GXT3 has surge protection and filters that protect the connected load from power surges
and sags, electromagnetic interference (EMI) and radio frequency interference (RFI). These features
can minimize any surges or interference present in the mains power. The filters also prevent surges
or interference generated by the UPS from adversely affecting other devices connected on the same
branch as the UPS.

™

6

Product Description

Rectifier/Power Factor Correction (PFC) Circuit

In normal operation, the Liebert GXT3’s rectifier/power factor correction (PFC) circuit converts mains
power to regulated DC power for use by the inverter while ensuring that the wave shape of the input
current used by the UPS is near ideal. Extracting this sine wave input current achieves two
objectives:

• Efficient power use by the UPS

• Reduced reflected harmonics

This results in cleaner power being available to other devices in the building that are not protected by
the UPS.

Inverter

In normal operation, the Liebert GXT3’s inverter utilizes the DC output of the PFC circuit to produce
precise, regulated sine wave AC power. When mains power fails, the inverter receives DC power from
the battery through the DC-to DC converter. In either operation mode, the UPS inverter is online,
continuously generating clean, precise, regulated AC output power.

Battery Charger

The battery charger utilizes energy from the mains power and precisely regulates it to continuously
float charge the batteries. The batteries are being charged whenever the Liebert GXT3 is plugged in,
even when the UPS is not turned On.

DC-to-DC Converter

The DC-to-DC converter raises the DC voltage from the battery to the optimum operating voltage for
the inverter. This allows the inverter to operate continuously at its optimum efficiency and voltage,
increasing reliability.

Battery

The Liebert GXT3 utilizes valve-regulated, nonspillable, lead acid batteries. To maintain battery
design life, operate the Liebert GXT3 in an ambient temperature of 0°C to 25°C (32°F to 77°F).

Optional external battery cabinets are available to extend battery run times.

Dynamic Bypass

The Liebert GXT3 provides an alternate path for mains power to the connected loads in the unlikely
event of a UPS malfunction. Should the Liebert GXT3 have an overload, overtemperature, or UPS
failure condition, the UPS automatically transfers the connected loads to bypass.

NOTE

The bypass power path does not protect the connected loads from disturbances on the mains.

1.5 Operating Mode

The UPS operation modes include the following: Mains (AC) Mode, Bypass Mode, Battery Mode,
Battery Recharge Mode and Frequency Converter Mode.

For the descriptions of operation mode indicators and control buttons, refer to 3.0 - Operation and
Display Panel.

1.5.1 Mains (AC) Mode

During Mains (AC) Mode, the mains provides energy to the Liebert GXT3. The filters, PFC circuit and
inverter process this power to provide high-level power to connected loads. Meanwhile, the UPS
maintains the batteries in a fully charged state.

7Liebert

®

GXT3

™

1.5.2 Manual Bypass Mode

!

Manual Bypass Mode occurs when the Standby/Manual Bypass button is pressed and held for about
2 seconds while the Liebert GXT3 is in Mains (AC) Mode. Bypass operation is indicated by an audible
alarm and illuminated amber bypass indicator. (If other indicators are illuminated, refer to 7.0 -
Troubleshooting). During Bypass Mode, mains power bypasses the inverter and provides energy to
the connected load.

NOTICE

Turning Off the UPS in Bypass Mode will result in loss of output power.

1.5.3 Battery Mode

The Liebert GXT3 enters Battery Mode when mains power fails or is outside acceptable values. The
battery system supplies power through the DC-to-DC converter to the inverter to generate clean AC
power for the connected loads.

When the Liebert GXT3 enters Battery Mode, the UPS sounds a half-second beep at 10-second
intervals. When approximately 2 minutes of run time remains, the beeps sound every 5 seconds to
warn that the battery is getting low (this Low Battery Warning is user-configurable).

In Battery Mode, the AC Input indicator is Off and the Battery Level indicators illuminate to warn
that a mains problem has occurred. Each battery level indicator represents a 20% capacity level. As
capacity decreases, fewer indicators remain illuminated. Refer to 7.0 - Troubleshooting.

Product Description

For approximate battery run times, refer to Table 15.

NOTICE

Turning Off the Liebert GXT3 when it is in Battery Mode will result in loss of output power.
If the UPS is turned Off manually, it must be manually restarted after mains power returns.
If the UPS is turned Off by a communication signal or because the batteries are depleted, it

will operate as selected in the configuration program for Auto-Restart (Refer to 5.2.1 -
Configuration Program).

1.5.4 Battery Recharge Mode

Once mains power is applied to the Liebert GXT3, the Battery Charger begins charging the batteries.

1.5.5 Frequency Converter Mode

All models of the Liebert GXT3 are capable of frequency conversion. Frequency Conversion Mode can
be selected using the configuration program. Allowable frequency operating modes include:

• Auto Sensing - 50Hz or 60 Hz – Bypass Enabled

• Auto Sensing - 50Hz or 60 Hz – Bypass Disabled

• Frequency Converter - 50Hz – Bypass Disabled

• Frequency Converter - 60Hz – Bypass Disabled

NOTE

The default for all models of the Liebert GXT3 is “Auto Sensing - 50Hz or 60 Hz – Bypass
Enabled.”

Liebert® GXT3

CAUTION

Do not touch the AC input receptacle when the UPS is operating. AC input voltages may still
be present even when the AC input indicator is Off.

™

8