Tescom TEOS+ 300 Series, User Manual, Page: 10 / 63

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2. Product Introduction
2.1 Introduction
The UPS supplies stable and uninterrupted power for the important load. It can
eliminate the power supply surge, instantaneous high/low voltage, harmonic and
frequency offset pollution, to provide high quality electrical energy to costomers.
2.2 System Configuration
The Tower UPS is configured by the following part: Rectifier, Charger, Inverter,
Static Switch and Manual Bypass Switch. One or several battery strings should be
installed to provide backup energy once the utility fails. The UPS structure is shown
in Fig. 2-1.
Fig. 2-1 UPS Configuration
2.3 Operation Mode
The UPS is an on-line, double-conversion UPS that permits operation in the following
modes:

Normal mode

Battery mode

Bypass mode

Maintenance mode (manual bypass)

ECO mode

Auto-restart mode

Frequency Converter mode

Self Aging Mode
2.3.1 Normal Mode
The inverter of power modules continuously supply the critical AC load. The
rectifier/charger derives power from the AC mains input source and supplies DC
power to the inverter while simultaneously FLOAT or BOOST charging its associated
backup battery.