Critical Power
Modifications reserved
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GE_UPS_USM_TLE_SUL_M16_M50_2bU_V010.docx
User Manual
TLE Series 160 - 500 UL S2B
4.1
BLOCK DIAGRAM AND MAIN ELEMENTS
Fig. 4.1-1 Block Diagram TLE Series 160 - 500
The
TLE Series 160 - 500
system can be divided into the following main elements:
Control System
TLE Series 160 - 500
is designed with microprocessor-controlled signal processing circuits.
The interface between the operator and the unit is provided by the monitoring system on the front
panel.
This monitoring system consists of an active mimic diagram, a keyboard and a backlit display.
Rectifier
The
Active IGBT Rectifier
converts the 3-phase utility voltage into a controlled and regulated DC-voltage,
supplying the
Inverter
and to charge the
battery
through the
battery-charger
.
Thanks to modulation strategy applied to
IGBT Bridge
, the
rectifier
provides clean input power in terms
of low
THDi
and unity power factor.
Inverter
The
Inverter
converts the DC voltage into a three-phase AC-voltage with constant amplitude and
frequency, which is completely independent and isolated from the AC-input voltage.
Automatic Bypass
The Automatic Bypass
consists of a static semiconductor-switch
(SSM: Static Switch Module)
, used to
provide an uninterrupted transfer of the
Load
from
Inverter to Utility.
Back-feed Protection
All
TLE Series 160 - 500
UPS's are equipped with an automatic system for the protection against voltage
back feeding towards
Utility
, through the
Bypass
(UL 1778 and CSA C22.2 no. 107.3).
This protection works automatically by opening
contactor K6
(in series with the thyristors of the static
switch) and eventually
K7
, and acts in case of internal defects of the system.
Battery
The
Battery
supplies the DC power to the
Inverter
when the
Utility
is out of acceptable tolerances.
