The TLE Series 600 & 800 system can be divided into the following main elements:
Control System
TLE Series 600 & 800 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 mains 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 Mains.
Back-feed Protection
All TLE Series 600 & 800 UPS's are equipped with an automatic system for the protection against voltage
back feeding towards Mains, through the Bypass (Applied Standard IEC 62040-1).
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 Mains is out of acceptable tolerances.
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