Liebert GXT2-6000RT230 User Manual download pdf (Page 8)

System Description

2.0 SYSTEM DESCRIPTION

2.1 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.

2.2 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 waveshape 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.

• 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 GXT2.

2.3 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 mains power failure, the inverter

receives its required energy from the battery through the DC to DC converter. In both modes of oper-

ation, the UPS inverter is on-line and continuously generating clean, precise, Regulated Ac Output

Power.

2.4 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 UPStation GXT2 is con-

nected to mains power.

Input Output

Inverter

Battery

Charger

Rectifier

/PFC

DC-to-DC

Converter

TVSS &

EMI/RFI

Filters

G G

Dynamic

Bypass

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Liebert GXT2-6000RT230 User Manual Page 8