Emerson GXT3-6000RT208 User Manual

AC Power

For Business-Critical Continuity™

Liebert® GXT3™ 208V, 5000-10,000VA, 6000RTL630

User Manual

TABLE OF CONTENTS

1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.0 SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.1 Transient Voltage Surge Suppression (TVSS) and EMI/RFI Filters. . . . . . . . . . . . . . . . . . . . 5

2.2 Rectifier/Power Factor Correction (PFC) Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4 Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.5 DC-to-DC Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.6 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.7 Dynamic Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.0 MAJOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3.1 Main Frame and Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Removable Power Distribution Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.3 Internal Battery Packs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.0 WHAT’S INCLUDED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.0 INSTALLATION AND CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5.1 Install the Main Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

	5.1.1	Tower UPS Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
	5.1.2	Rack-Mount UPS Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
	5.1.3 Installing the Adjustable Rack-Mount Kit—Sold Separately . . . . . . . . . . . . . . . . . . . . . . . . .		13
5.2	External Battery Cabinet Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		16
5.3	Connect Input/Output Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		17
	5.3.1 Remove the Power Distribution Box from 5000 and 6000VA Models . . . . . . . . . . . . . . . . . . .		17
	5.3.2 Remove the Power Distribution Cover from 8000 and 10,000VA Models . . . . . . . . . . . . . . . .		18
	5.3.3 Install the Power Distribution Box on 5000 and 6000VA Models . . . . . . . . . . . . . . . . . . . . . .		18
	5.3.4 Install the Power Distribution Box on 8000 and 10,000VA Models . . . . . . . . . . . . . . . . . . . .		19
	5.3.5 Distribution Box Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		19
5.4	IT Power System Configuration—Liebert® GXT3-6000RTL630™ Only . . . . . . . . . . . . . . . .		21
6.0	CONFIGURATION PROGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		22
6.1	Configuration Program Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		22
	6.1.1 What You Will Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		22
7.0	CONTROLS AND INDICATORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		23
7.1	ON/Alarm Silence/Manual Battery Test Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		23
7.2	Standby/Manual Bypass Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		23
7.3	Load Level Indicators (4 Green, 1 Amber) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		24
7.4	Battery Level Indicators (5 Green) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		24
7.5	UPS Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		25
8.0	OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		26
8.1	Startup Checklist for the Liebert GXT3™. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		26
8.2	Initial Startup and Electrical Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		26
8.3	Manual Battery Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		27

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8.4 Put the Liebert® GXT3™ in Manual Bypass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 8.5 Shut Down the Liebert GXT3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 8.6 Disconnecting Input Power from the Liebert GXT3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 8.7 Maintenance Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

9.0 COMMUNICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

9.1 Communication Interface Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 9.2 Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

9.2.1 Any-Mode Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 9.2.2 Battery Mode Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 9.2.3 On Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.2.4 Low Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.3 Liebert IntelliSlot® Communication Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.3.1 Liebert® MultiLink®. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9.4 Remote Emergency Power Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

10.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

10.1 Replacing the Internal Battery Pack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

10.1.1 Battery Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

10.2 Battery Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 10.3 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 10.4 Checking UPS Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 10.5 Checking UPS Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 10.6 Replacing the Power Module on 8000 and 10,000VA models . . . . . . . . . . . . . . . . . . . . . . . . 33

11.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

11.1 UPS Symptoms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

11.1.1 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 11.1.2 Audible Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

11.2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

12.0 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

12.1 Auto-Learning Battery Run Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

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	FIGURES
Figure 1	Liebert GXT3 front view—rack-mount and tower configurations . . . . . . . . . . . . . . . . . . . . . . . . .	. 7
Figure 2	Liebert GXT3 5000VA and 6000VA rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 7
Figure 3	Input power hardwire boxes—5000 and 6000VA models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
Figure 4	Liebert® GXT3-6000RTL630™, rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
Figure 5	Liebert GXT3 8000VA and 10,000VA rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
Figure 6	Power distribution models for 5000VA and 6000VA models of Liebert® GXT3™. . . . . . . . . . . . . .	9
Figure 7 Power distribution models for 8000VA and 10,000VA models of Liebert® GXT3™ . . . . . . . . . . .		10
Figure 8	Internal battery pack features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
Figure 9	Support bases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
Figure 10	Remove the front plastic bezel cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
Figure 11	Rotate the operation and display panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
Figure 12	External battery cabinets connected to 6000VA Liebert GXT3 . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
Figure 13	Power distribution box removal from 5000 and 6000VA models . . . . . . . . . . . . . . . . . . . . . . . . . .	17
Figure 14	Power distribution box removal from 8000 and 10,000VA models . . . . . . . . . . . . . . . . . . . . . . . .	18
Figure 15	Distribution box electrical connections diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
Figure 16	Terminal block connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
Figure 17	Remove cover from IT Power System Connectors compartment . . . . . . . . . . . . . . . . . . . . . . . . . .	21
Figure 18	Liebert® GXT3™ control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	23
Figure 19	Load level indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	24
Figure 20 Battery level indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		24
Figure 21	Terminal block communication pin layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	28
Figure 22	Removing the front plastic bezel cover and battery door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	31
Figure 23	Disconnecting the battery plug and battery receptacle (front view) . . . . . . . . . . . . . . . . . . . . . . .	31
Figure 24	Pulling out the battery packs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	32
Figure 25	Removing power module from Liebert® GXT3™ 8000 and 10,000VA models . . . . . . . . . . . . . . . .	34
Figure 26 Battery level indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		35
	TABLES
Table 1	Branch circuit breaker ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
Table 2	Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
Table 3	UPS status indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	25
Table 4	Indicator descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	35
Table 5	Audible alarm description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	36
Table 6	Troubleshooting table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	36
Table 7	UPS specifications—5000, 6000, 8000 and 10,000 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	38
Table 8	UPS specifications—Liebert® GXT3-6000RTL630™. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	39
Table 9	Operating temperature parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	40
Table 10	Internal battery cabinet specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	40
Table 11	External battery cabinet specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	41
Table 12	Power distribution specifications: GXT3-5000RT208, GXT3-6000RT208 and
	GXT3-6000RTL630 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	41
Table 13	Power distribution box specifications for GXT3-8000RT208 and GXT3-10000RT208 . . . . . . . . .	42
Table 14 Battery run time, minutes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		43

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IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important safety instructions. Read all safety and operating instructions before operating the uninterruptible power system (UPS). Adhere to all warnings on the unit and in this manual. Follow all operating and user instructions. This equipment can be operated by individuals without previous training.

This product is designed for commercial/industrial use only. It 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. The UPS is designed for data processing equipment. If uncertain, consult your dealer or local Emerson Network Power representative.

This UPS is designed for use on a properly grounded (earthed), 100/200, 110/220, 115/230, 120/208,120/240 or 127/220VAC, 50 or 60Hz supply. The factory default setting is 120/208VAC, 60Hz. Installation instructions and warning notices are in this manual.

The Liebert® GXT3™ 208VAC 5000 - 10000 is designed for use with a four-wire input (L1, L2, N, G).

The Liebert GXT3-6000RTL630™ is designed be used with a three-wire, two-phase utility source (L1, L2, G).

! WARNING

The battery can present a risk of electrical shock and high short circuit current. The following precautions should be observed when replacing the battery pack:

• Wear rubber gloves and boots

• Remove rings, watches and other metal objects.

• Use tools with insulated handles.

• Do not lay tools or other metal objects on the batteries.

• If the battery kit is damaged in any way or shows signs of leakage, contact your local Emerson representative immediately.

• Do not dispose of batteries in a fire. The batteries may explode.

• Handle, transport and recycle batteries in accordance with local regulations.

! WARNING

Although the Liebert GXT3 has been designed and manufactured to ensure personal safety, improper use can result in electrical shock or fire. To ensure safety, observe the following precautions:

•Turn Off and unplug the Liebert GXT3 before cleaning it.

•Clean the UPS with a dry cloth. Do not use liquid or aerosol cleaners.

•Never block or insert any objects into the ventilation holes or other openings of the UPS.

•Do not place the Liebert GXT3 power cord where it might be damaged.

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ELECTROMAGNETIC COMPATIBILITY—The Liebert® GXT3™ complies with the limits for a Class A digital device, pursuant to Part 15 of FCC rules.

Operation is subject to the following conditions:

•This device may not cause harmful interference.

•This device must accept any interference received, including interference that may cause undesired operation. 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.

NOTICE

This is a product for restricted sales distribution to informed partners. Installation restrictions or additional measures may be needed to prevent radio interference.

Operate the UPS in an indoor environment only in an ambient temperature range of 0-40°C (32-104°F). Install it in a clean environment, free from moisture, flammable liquids, gases and corrosive substances.

The Liebert GXT3-5000RT208™, Liebert GXT3-6000RT208™ and the Liebert GXT3-6000RTL630™ contain no user-serviceable parts except the internal battery pack. The Liebert GXT3-10000RT208™ and the Liebert GXT3-8000RT208™ contain no user-serviceable parts except the internal battery pack and the Power Module. The UPS On/Off push buttons do not electrically isolate internal parts. Under no circumstances attempt to gain access internally due to the risk of electric shock or burn.

Do not continue to use the UPS if the front panel indications are not in accordance with these operating instructions or the UPS performance alters in use. Refer all faults to your dealer.

Servicing of batteries should be performed or supervised by personnel knowledgeable of batteries and the required precautions. Keep unauthorized personnel away from the batteries. Keep unauthorized personnel away from the batteries. Proper disposal of batteries is required. Refer to your local laws and regulations for disposal requirements.

Never block or insert any object into the ventilation holes or other openings.

DO NOT CONNECT equipment that could overload the UPS or demand DC current from the UPS, for example: electric drills, vacuum cleaners, laser printers, hair dryers or any appliance using halfwave rectification.

Storing magnetic media on top of the UPS may result in data loss or corruption.

Turn Off and isolate the UPS before cleaning it. Use only a soft cloth, never liquid or aerosol cleaners.

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.

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GLOSSARY OF SYMBOLS

Risk of electrical shock

!Indicates caution followed by important instructions

AC input

AC output

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Requests the user to consult the manual

	-	+	Indicates the unit contains a valve-regulated lead acid battery
	PbH2SO4

RRecycle

DC voltage

Equipment grounding conductor

Bonded to ground

AC voltage

ON/Alarm Silence/Manual Battery Test

OFF/Bypass

WEEE

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Introduction

1.0INTRODUCTION

Congratulations on your choice of the Liebert® GXT3™ uninterruptible power system (UPS). The Liebert GXT3 comes in nominal power ratings of 5000VA, 6000VA, 8000VA and 10,000VA. It is designed to provide conditioned power to microcomputers and other sensitive electronic equipment.

When it is generated, alternating current is clean and stable. However, during transmission and distribution it is subject to voltage sags, spikes and complete power failure that may interrupt computer operations, cause data loss and even damage equipment. The Liebert GXT3 protects equipment from these disturbances.

The Liebert GXT3 is a compact, on-line UPS. An on-line UPS continuously conditions and regulates its output voltage, whether utility power is present or not. It supplies connected equipment with clean, sinewave power. Sensitive electronic equipment operates best from sinewave power.

For ease of use, the Liebert GXT3 features a light-emitting diode (LED) display to indicate both load percentage and battery capacity. It also provides self-diagnostic tests, a combination ON/Alarm Silence/Manual Battery Test button, a Standby/Manual Bypass button and a configuration program.

The Liebert GXT3 has a Liebert IntelliSlot® port for communication between the UPS and a network server or other computer systems. This port provides detailed operating information including voltages, currents and alarm status to the host system when used in conjunction with Liebert MultiLink®. Liebert MultiLink can also remotely control UPS operation.

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System Description

2.0SYSTEM DESCRIPTION

	Input				Output
				Static
				Bypass
	L1				L1
		TVSS &	Rectifier/PFC
	L2				L2
	N	EMI/RFI	DC-to-DC	Inverter
		Filters	Converter		N

Battery				Battery
				Charger

G G

2.1Transient Voltage Surge Suppression (TVSS) and EMI/RFI Filters

These UPS components provide surge protection and filter both electromagnetic interference (EMI) and radio frequency interference (RFI). They minimize any surges or interference present in the utility line and keep the sensitive equipment protected.

2.2Rectifier/Power Factor Correction (PFC) Circuit

In normal operation, the rectifier/power factor correction (PFC) circuit converts utility AC power to regulated DC power for use by the inverter while ensuring that the waveshape of the input current used by the UPS is near ideal. Extracting this sinewave input current achieves two objectives:

•The utility power is used as efficiently as possible by the UPS.

•The amount of distortion reflected on the utility is reduced.

This results in cleaner power being available to other devices in the building not being protected by the Liebert® GXT3™.

2.3Inverter

In normal operation, the inverter utilizes the DC output of the power factor correction circuit and inverts it into precise, regulated sinewave AC power. Upon a utility power failure, the inverter receives its required energy from the battery through the DC-to-DC converter. In both modes of operation, the UPS inverter is on-line and continuously generating clean, precise, regulated AC output power.

2.4Battery Charger

The battery charger utilizes energy from the utility power and precisely regulates it to continuously float charge the batteries. The batteries are being charged whenever the Liebert GXT3 is connected to utility power.

2.5DC-to-DC Converter

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

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System Description

2.6Battery

The Liebert® GXT3™ utilizes valve-regulated, nonspillable, lead acid batteries. To maintain battery design life, operate the UPS in an ambient temperature of 15°C to 25°C (59°F to 77°F). Optional external battery cabinets are available to extend battery run times. For run times, see Table 14.

2.7Dynamic Bypass

The Liebert GXT3 provides an alternate path for utility power to the connected load in the unlikely event of a UPS malfunction. Should the UPS have an overload, overtemperature or any other UPS failure condition, the UPS automatically transfers the connected load to bypass. Bypass operation is indicated by an audible alarm and illuminated amber Bypass LED (other LEDs may be illuminated to indicate the diagnosed problem). To manually transfer the connected load from the inverter to bypass, press the Standby/Manual Bypass button once and hold it for about 2 seconds.

NOTE

The bypass power path does NOT protect the connected equipment from disturbances in the utility supply.

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Major Components

3.0MAJOR COMPONENTS

The Liebert® GXT3™ is composed of three major assemblies to provide easier handling, installation and versatility.

3.1Main Frame and Electronics

All models of the Liebert GXT3 are shipped without the internal batteries installed. Power distribution varies by model and rating.

•Liebert GXT3 5000 and 6000VA models ship with a basic hardwire distribution box attached and ready to be connected to the load (see Figure 2).

•Liebert GXT3RTL630™ ships with a power distribution box attached (see (Figure 4).

•Liebert GXT3 8000 and 10,000VA models with a cover plate installed over connections for any of several optional power distribution boxes (see Figure 5).

Figure 1 Liebert GXT3 front view—rack-mount and tower configurations

Upper Bezel

Status Indicators

and Controls

Lower Bezel and

Battery Access

Door

Figure 2 Liebert GXT3 5000VA and 6000VA rear view

USB Port						Liebert	Knockouts for Hardwired
REPO						IntelliSlot Port	Power Input

Terminal Block

Communication

				External Battery
Input Breaker				Connector

Figure 3 Input power hardwire boxes—5000 and 6000VA models

Input

Breaker

	Maintenance
	Bypass Breaker
PD2-HDWR	Input Breaker
					PD2-HDWR-MBS - 5000
5000 and 6000VA models					and 6000VA models

NOTE

Hardwire and hardwire/receptacle boxes that include a manual bypass switch permit AC power to continue to flow from the utility input to the load while the box is removed from the UPS. For details, refer to 3.2 - Removable Power Distribution Box.

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							Major Components
	Figure 4 Liebert® GXT3-6000RTL630™, rear view
	Terminal Block				REPO Connection	Output Breaker for	Output Breaker
						L6-20R #2 and #3	for L6-30R #4
					Block
	Communication
					USB Port
								External
	Liebert							Battery
								Connector
	IntelliSlot Port
	Input Breaker							IT Power
	for L6-30P #1							System
								Access
								Cover
	Maintenance							Output Breaker
								for L6-30R #5
	Bypass Breaker					5
	1		2		3		4
	Figure 5 Liebert GXT3 8000VA and 10,000VA rear view
					Liebert	Terminal Block
	Maintenance				IntelliSlot Port	Communication	REPO Connection Block

Bypass

Switch

Cover for Power

Distribution Box USB Port Connections

Output							Input
Breaker
							Breaker
Switch
							Switch
External Battery								Knockouts
								for Hardwired
Connector
								Power Input

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Major Components

3.2Removable Power Distribution Box

The UPS is shipped with a power distribution pack installed. This box contains the UPS input circuit breaker.

Figure 6 Power distribution models for 5000VA and 6000VA models of Liebert® GXT3™

Maintenance	Output Power Breakers
	for Pigtails
Bypass Breaker

Input Power

Breaker

L14-30 Input

Power Connector

PD2-001 shown as example; similar features on other distribution boxes arranged differently

Push Button Output Power Breakers for Two L5-20 Receptacles (second push button breaker obscured)

PD2-001

Receptacles: four 5-20; one

L14-30; one L6-30R

PD2-002

Receptacles: two 5-20R; two L6-20R PD2-005

Receptacles: four L5-20R; two L6-30R

	PD2-003	PD2-006
		Receptacles: four L6-20R
	receptacles: four 5-20R; two L6-30

PD2-004

Receptacles: four L5-20R; two L5-30R

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Major Components

Figure 7 Power distribution models for 8000VA and 10,000VA models of Liebert® GXT3™

5-20R Output

Receptacles

Push Button Circuit Breakers

for 5-20R Receptacles

5-20R Output

Receptacles

PD2-101 Receptacles: two L6-30; eight 5-20R

PD2-102

Receptacles: four L6-20R four 5-20R

PD2-103

Receptacles: four L6-30R four 5-20R

PD2-104

Receptacles: four 5-20R two L6-30R two L6-20R

similar features on other distribution boxes arranged differently

Output Circuit Breaker

Switch for L6-30R Pigtail #1

L6-30ROutput

Receptacles

2

1

Output Circuit Breaker Switch for L6-30R Pigtail #2

PD2-105

Receptacles: four 5-20R two L5-30R two L5-20R

PD2-106

Receptacles: four L6-20R four L5-20R

3.3Internal Battery Packs

The UPS has two internal battery packs behind a battery access door on the front of the unit. Each internal battery pack is fitted with a connector to link to the UPS.

Figure 8 Internal battery pack features

Battery Handle

Battery Connector

Liebert GXT3 8000 and 10,000VA

battery packs shown; 5000 and 6000VA battery packs

have same features

Front of Battery Pack

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