Liebert UPStation GXT 2U Manuale utente

UPStation GXT 2U

700 - 3000 VA 230V

User Manual

English

WARNING: 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.

Observe all cautions and warnings in this manual. Failure to do so

MAY result in serious injury or death. Refer all UPS and battery ser-

vice to qualified service personnel. Do not attempt to service this prod-

uct yourself. Never work alone.

SAVE THESE INSTRUCTIONS.

This Manual Contains Important Safety Instructions.

Read all safety, installation, 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. Individ-

uals without previous training can install and operate this equipment.

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 local dealer or Liebert Representative. See the Limited War-

ranty.

This UPS is designed for use on a properly grounded (earthed), 200 - 240

VAC, 50Hz or 60Hz supply. Installation instructions and warning notices

are located in this manual.

ELECTROMAGNETIC COMPATIBILITY - The GXT 2U Series complies

with the requirements of the EMC directive 89/336/EEC and the published

technical standards. Continued compliance requires installation in accor-

dance with these instructions and use of manufacturer approved acces-

sories only.

Operate the UPS in an indoor environment only in an ambient tempera-

ture range of 0°C to +40°C (32°F to +104°F). Install it in a clean environ-

ment, free from conductive contaminates, moisture, flammable liquids,

gasses, or corrosive substances.

WARNING: This UPS should not be supplied from electrical power

systems of the “IT” (Impedance á Terre) type. (IEC 364 - ELECTRICAL

INSTALLATION OF BUILDINGS).

IMPORTANT SAFETY INSTRUCTIONS

This UPS contains no user serviceable parts except the internal battery

packs. The UPS ON/OFF pushbuttons do not electrically isolate internal

parts. Under no circumstances attempt to gain access internally other

than to replace the batteries due to risk of electric shock or burn. Do not

continue to use the UPS if the front panel indications are not in accor-

dance with these operating instructions, or the UPS performance alters in

use. Refer all faults to your local dealer, Liebert Representative or the Lie-

bert Worldwide Support Group.

Servicing of batteries should be performed or supervised by personnel

knowledgeable of batteries and the required precautions. Keep unautho-

rized personnel away from the batteries. PROPER DISPOSAL OF BAT-

TERIES IS REQUIRED. REFER TO YOUR LOCAL LAWS AND

REGULATIONS FOR BATTERY DISPOSAL REQUIREMENTS. Never

block or insert any object into the ventilation holes or other openings of

the UPS.

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.

Storing magnetic media on top of the UPS may result in data loss or cor-

ruption.

Turn the UPS OFF and isolate the UPS before cleaning. Use only a soft

cloth, never liquid or aerosol cleaners. Keep the front and rear vents free

of dust accumulation that could restrict airflow.

When replacing batteries, replace with the same Liebert authorized

replacement battery kits.

CAUTION: Do not dispose of battery or batteries in a fire. The battery

may explode.

CAUTION: Do not open or mutilate the battery or batteries.

Released electrolyte is harmful to skin and eyes. It may be toxic.

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, or other metal objects.

-Use tools with insulated handles.

Congratulations on your choice of the Liebert UPStation GXT 2U Uninter-

ruptible Power System (UPS). It provides conditioned power to micro-

computers and other sensitive electronic equipment.

Upon generation, AC power is clean and stable. However, during trans-

mission and distribution it may be subject to voltage sags, spikes, or com-

plete power failure that may interrupt computer operations, cause data

loss, or even damage equipment. The UPStation GXT 2U protects equip-

ment from these disturbances.

The UPStation GXT 2U comes in nominal power ratings of 700, 1000,

1500, 2000, & 3000 VA. Complete model specifications appear at the end

of this manual.

The UPStation GXT 2U is a compact, "on-line" UPS. An "on-line" UPS

continuously conditions and regulates its output voltage, whether the util-

ity power is present or not. It supplies connected equipment with clean

sinewave power. Sensitive electronic equipment operates best from sine-

wave power.

For ease of use, the UPStation GXT 2U 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-diagnostic

tests, a combination ON/Alarm Silence/Manual Battery Test button, a

combination OFF/Bypass button, user configurable program, and two lev-

els of alarms when the unit is operating on battery.

The UPStation GXT 2U has an interface port for communications

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™ software. MultiLink software can also remotely control UPS

operation.

INTRODUCTION

TRANSIENT VOLTAGE SURGE SUPPRESSION (TVSS) AND EMI/RFI

FILTERS

These UPS components provide surge protection, and filter both electro-

magnetic interference (EMI) and radio frequency interference (RFI). They

minimize any surges or interference present in the mains line and keep

the sensitive equipment protected.

RECTIFIER/POWER FACTOR CORRECTION (PFC) CIRCUIT

In normal operation, the rectifier/power factor correction (PFC) circuit con-

verts 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, 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 2U.

INVERTER

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 the operation, the UPS inverter is on-line and continuously generating

clean, precise, regulated AC output power.

MAJOR COMPONENTS

TVSS and

EMI/RFI

Filters

INVERTER

BATTERY

CHARGER

DYNAMIC

BYPASS

RECTIFIER

/ PFC

INPUT OUTPUT

BATTERY

DC TO DC

CONVERTER

BATTERY CHARGER

The battery charger utilizes energy from the mains and precisely regu-

lates it to continuously "float" charge the battery system. The battery sys-

tem charges whenever the UPStation GXT 2U is plugged in.

DC 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.

BATTERY

The UPStation GXT 2U utilizes valve regulated, nonspillable, flame retar-

dant 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 battery run times.

DYNAMIC BYPASS

The UPStation GXT 2U provides an alternate path for mains to the con-

nected 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. Bypass operation

is indicated by an alarm and illuminated Amber Bypass LED (other LED's

may be illuminated to indicate the diagnosed problem). To manually

transfer the connected load from the inverter to bypass, press the "OFF"

button once.

NOTE: The bypass power path does NOT protect the connected equip-

ment from disturbances or an outage on the mains supply.

GXT 2U (Rear View)

AC Input

Support Base

Output

Sockets

External Battery

Connector

Cooling Fan

Intellislot Port

DB-9

Communications

Port

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