Liebert GXTTM User Manual

English

UPStation GXT™

6 & 10 kVA

230V

USER MANUAL

IMPORTANT SAFETY INSTRUCTIONS

1. 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.

2. 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.
See Limited Warranty.

3. This UPS is designed for use on a properly earthed (grounded), 208-240
VAC, 50Hz or 60Hz supply, for installation by qualified personnel. A qualified
electrician must review and approve customer supplied wiring, circuit
breakers, intended loads, and verify correct input, output and earth
connections to ensure compliance with technical standards and local
electrical codes of practice. Installation instructions and warning notices only
for use by qualified personnel are located after the UPS operator instructions
in this manual.

WARNING: This UPS should not be supplied from electrical power systems
of the “IT” (Impédance à Terre) type. (IEC 364-ELECTRICAL INSTALLATION
OF BUILDINGS)

4. ELECTROMAGNETIC COMPATIBILITY- This UPS complies with the

requirements of the EMC Directive 89/336/EEC and the published technical
standards. Continued compliance requires installation in accordance with
these instructions and the use of manufacturer approved accessories only.

WARNING: This is a CLASS A – Uninterruptible Power System Product. In a
domestic environment, this may cause radio interference, in which case the
user may be required to take additional measures.

5. Operate the UPS in an indoor environment only in an ambient temperature

range of 0°C to +40°C (32°F to +104°F). Install it in a clean environment, free
from moisture, flammable liquids, gasses, or corrosive substances.

6. This UPS contains no user serviceable parts. The UPS ON/OFF pushbuttons

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.

7. Only trained engineers authorised by Liebert should perform troubleshooting.

To replace batteries, refer all servicing to qualified service personnel.
PROPER DISPOSAL OF BATTERIES IS REQUIRED. REFER TO YOUR
LOCAL LAWS AND REGULATIONS FOR DISPOSAL REQUIREMENTS.

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

9. DO NOT CONNECT equipment that could overload the UPS or demand DC

current from the UPS, for example: electric drills, vacuum cleaners, laser
printers, hairdryers or any appliance using half wave rectification.

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

corruption.

11. Turn the UPS off and isolate the UPS before cleaning. Use only a soft cloth,

never liquid or aerosol cleaners.

GLOSSARY OF SYMBOLS

Indicates AC Input

Indicates AC Output

Indicates Caution: Note the accompanying instruction

Indicates the position of a fuse

Requests the user to consult the manual for additional
information

Indicates that the unit contains a valve regulated lead acid battery

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INTRODUCTION AND SYSTEM DESCRIPTION

Congratulations on your choice of the UPStation GXT™ Uninterruptible Power
System (UPS). It provides conditioned power to microcomputers and other
sensitive electronic equipment.

Upon generation, AC power is clean and stable. However, during transmission
and distribution it may be subject to voltage sags, spikes, or complete power
failure, which may interrupt computer operations, cause data loss, or even
damage equipment. The UPStation GXT protects equipment from these
disturbances.

The UPStation GXT is a compact, “on-line” UPS. An “on-line” UPS continuously
conditions and regulates its output voltage, whether the mains power is present
or not. It supplies connected equipment with clean sinewave power. Sensitive
electronic equipment operates best from sinewave power. The GXT
6000/10000T-230X models have an additional output isolation transformer.

For ease of use, the UPStation GXT contains a light emitting diode (LED) display
to indicate either “load percentage” or “battery capacity” depending upon the
mode of operation. It also provides self-diagnostics, a combination On/Alarm
Silence/Manual Battery Test button, a combination Off/Bypass button, and two
levels of alarms when the unit is operating on battery.

The UPStation GXT has an interface port for communications between the UPS
and a LAN server or other computer system. This port provides detailed
operating information including voltages, currents, and alarm status to the host
system when used in conjunction with the SiteNet® 2 software. SiteNet® 2
software can also remotely control UPS operation.

MAJOR COMPONENTS

Rectifier/PFC

INPUT

EMI/RFI

Filter

Battery

TRANSIENT 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 mains line and keep the sensitive
equipment protected.

Battery

Charger

Inverter

EMI/RFI

Static Bypass

Output Transformer

GXT 230X models only

Filter

OUTPUT

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RECTIFIER/POWER FACTOR CORRECTION (PFC) CIRCUIT

In normal operation, the rectifier/power factor correction (PFC) circuit converts
mains AC 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 sinewave input current achieves two objectives: the mains power
is used as efficiently as possible by the UPS, and the amount of distortion
reflected on the mains is reduced. This results in cleaner power being available
to other devices in the building not being protected by the UPStation GXT.

INVERTER

In normal operation, the inverter utilises the DC output of the power factor
correction circuit and “inverts” it into precise, regulated sinewave AC power.
Upon a mains power failure, the inverter receives its required energy from the
battery through the rectifier / PFC. In both modes of the operation, the UPS
inverter is on-line and continuously generating clean, precise, regulated AC
output power.

BATTERY CHARGER

The battery charger utilises energy from the Rectifier / PFC and precisely
regulates it to continuously “float” charge the battery system. The battery system
charges whenever the UPStation GXT is connected to mains power.

BATTERY

The UPStation GXT employs valve regulated, non-spillable, lead acid batteries.
At typical room temperatures and with the UPS float charging, the battery system
will last many years. Optional external battery cabinets are available to provide
extended run times.

STATIC BYPASS

The UPStation GXT provides an alternate path for mains power to the connected
load, in the unlikely event of a UPS malfunction. Should the UPS have an
overload, over temperature, or UPS failure condition, the UPS automatically
transfers the connected load to BYPASS providing the bypass voltage is within
specification. BYPASS operation is indicated by an alarm and an illuminated
BYPASS LED (other LED’s may be illuminated to indicate the diagnosed
problem). To manually transfer the connected load from the inverter to BYPASS
power, press the output OFF button once.
NOTE: The BYPASS power path does NOT protect the connected equipment
from disturbances on the mains supply and its range of operation is limited to +/­15% of the nominal input supply voltage.

AUTO RE-START

Upon restoration of the mains AC power after a mains power outage and
complete battery discharge, the UPS will automatically restart and supply power
to the critical load and the battery charger automatically recharges the battery.

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CONTROLS AND INDICATORS

Fault Indicator

UPS ON /

Alarm Silence /

Manual Battery Test

Output OFF /

Bypass

Load / Battery Level

Indicators

BYPASS

UPS ON

BATTERY

AC INPUT

Fault Indicator (Red)

The Fault indicator is illuminated if the UPS has detected a problem. Also, one or
more of the load/battery level indicators may be illuminated (refer to
Troubleshooting Guide).

BYPASS Indicator (Amber)
The BYPASS indicator is illuminated when the UPS is operating from BYPASS
power. An alarm will sound indicating the UPS detected a problem, or manually
set to BYPASS.

UPS ON Indicator (Green)
The UPS On indicator is illuminated when the UPS inverter is operating and
supplying power to your connected loads.

Battery Indicator (Amber)
The Battery indicator is illuminated when the UPS is operating from the battery
system.

AC Input Indicator (Green)
The AC Input indicator is illuminated when mains power is available and within
the input specification.

Load/Battery Level Indicators (4 Green, 1 Amber)
The Load/Battery Level indicators have dual functions. During NORMAL mode
operation LED indicators display the approximate electrical load placed upon the
UPS; and during battery mode operation LED indicators display approximate
battery capacity.

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The UPStation GXT is equipped with automatic and remote battery test features.
The automatic test occurs every 14 days if a manual battery test has not been
performed or if mains has not been interrupted (14 day timer resets if unit goes to
battery). Should the battery fail this test, the fault indicator along with the A and
C diagnostic LEDs will illuminate and an alarm will sound (refer to
Troubleshooting Guide). The remote test feature functions with either SiteNet® 2
or SiteNet® SNMP Manager software and can remotely initiate the battery test.

UPS ON/Alarm Silence/Manual Battery Test Button

This button controls output power to connected load(s) and has three functions:
UPS ON, Alarm Silence, and Manual Battery Test.
To start the UPS, while in the BYPASS mode, press this button until the
command is acknowledged by a beep from the audible alarm. This will provide
conditioned and protected power into the output terminal block.
To silence alarms, press this button for at least one half second while alarm
conditions are present. After the alarm is silenced, the UPStation GXT will
reactivate the alarm system to alert of additional problems.
NOTE: The low battery and BYPASS reminder alarms cannot be silenced.
BATTERY TESTING- To initiate a manual battery test, press this button for at
least one half second while operating in normal UPS mode power and no alarm
conditions are present. If the bottom two LED's do not illuminate during a Battery
Test, allow the UPS to recharge the batteries for 24 hours. After 24 hours, retest
the batteries. If the batteries have been re-tested and the bottom two LED's still
do not illuminate, contact your dealer or Global Services for a battery
replacement.

OUTPUT OFF/BYPASS Button

This button controls output power to connected load(s) and has dual functions:
OUTPUT OFF and Bypass.
CAUTION: Pressing this button once during normal operation will cause the load
to be transferred to BYPASS power. Pressing this button a second time within 4
seconds will result in loss of power to the output and connected loads. Perform
all necessary shutdown procedures on connected loads before pressing this
button twice.

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GXT 6 & 10 kVA

Component Diagram

230 & 230X Models Shown

TM

DB-9
Communications
Port

Intellislot
Communications
Port

TM

Intellislot
Communications
Port

DB-9
Communications
Port

Output Voltage
Selector Switches

Output Voltage
Selector Switches

Input

Breaker

Hardwire

Terminal Blocks

Battery

Breaker

Battery

Breaker

Output

Breaker

Terminal Blocks

Adjustable levels

Breakers

Input Output

Hardwire

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OPERATING MODES

NORMAL MODE OPERATION- UPS mode

During normal operation, mains power provides energy to the UPS. The filters,
the power factor correction circuit and
the inverter process this power to
provide computer grade power to
connected loads. The UPS maintains
the batteries in a fully charged state.

The four green LED’s indicate an
approximate level of load in 25%
increments. If the UPS becomes
loaded beyond full rating, the fifth
(amber) LED indicator will illuminate
and sound an alarm.

The display template indicates the
percentage of load on the UPS output.

BATTERY MODE OPERATION

Battery mode occurs in event of an
extreme input voltage condition or
complete mains failure. The battery
system supplies power through the
DC-DC converter to the inverter to
generate power for the connected
load.

During battery mode an alarm sounds
every 10 seconds. This will change to
2 beeps every 5 seconds when battery
runs low (approximately 2 minutes
remaining). The AC Input LED will
extinguish, and the Battery LED will
illuminate to warn that a mains problem
has occurred. Each load/battery level indicator represents a 20% capacity level.
As capacity decreases, fewer indicators remain illuminated. Refer to the
Troubleshooting Guide.

To increase this time, turn off non-essential pieces of equipment (such as idle
computers and monitors) or add an optional external battery cabinet.

CAUTION: Turning off the UPS while in battery mode will result in loss of output
power.

Once mains power is restored, the UPS resumes normal operation. At this time,
the Battery Charger begins recharging the battery.

Normal Mode Operation at

51-75% loading

Battery Mode Operation at

81-100% battery capacity