Emerson Liebert GXT4 - Internal Battery Packs; Major UPS Components; External Battery Cabinet Installation

Product Description
Liebert
®
GXT4
™
10
1.5 Internal 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 with connector
1.6 Major Components
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.
1.6.1 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.
1.6.2 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 Liebert GXT4.
Battery Connector
Front of Battery Pack
GXT4 10,000 Battery
Pack shown; 5000 and
6000VA battery packs
have same features
Battery Handle
EMI/RFI
Output
Filter
Rectifier/PFC
DC-DC
Converter
Battery
Charger
Battery
Internal
Bypass
L1
G
L2
N
G
L1
Maintenance Bypass
(5/6 kVA in POD)
(8/10 kVA in frame)
L2
N
TVSS
EMI/RFI
Input
Filter
Inverter
General Outlet
(POD
Dependent )
General Outlet
(POD
Dependent )
General Outlet
(POD
Dependent )
General Outlet
(POD
Dependent )
General Outlet
(POD
Dependent )