OPTI-UPS DS160KD33 - Manual (Page 5)

1-1
1. SYSTEM OVERVIEW
1.1. Construction of the UPS
General Topology：
The UPS system is composed of input breakers, input filter & protection network,
rectifier, battery bank, inverter, static switch, bypass breaker, isolation transformer
and output filter. The basic topology is shown in the diagram above. Under normal
AC mode, energy from the AC source is converted to DC power and supply to the
inverter and charge the battery to its full capacity all the time, ready to support the
output load in case of AC source failure.
Perhaps one may doubt if it is worthwhile to buy a UPS. But when you use a
calculator to add up the direct and indirect loss caused by AC failure, you will
immediately find that the money you save in 2 or 3 times of AC failure can already
compensate the cost of a UPS. Besides, the life expectancy of a UPS is at least 5 to
8 years, you may already get back the expense on the UPS within one year.
Although the principle and operation of a UPS seems simple and straightforward,
the requirement for a reliable and intelligent UPS makes the design and
manufacturing of a high power UPS requires advanced technology, intelligence,
experience and the most important, be considerate to the user. Therefore we spend
years and huge investment in developing the most rugged, intelligent and reliable
UPS for the market, safe and convenient UPS for the user.