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LINE INTERACTIVE UPS
As the prices of UPS technology have dropped
over the years, this has become the most
common type of UPS offered in the market.
Line Interactive UPS models come with the
technology called an AVR or Automatic Voltage
Regulation. In addition to doing everything that
the traditional old Standby UPS does, this type
of UPS also monitors the level and quality of
the power coming from the wall and does some power “cleaning” by
regulating the voltage flow.
It uses a transfer switch for a system bypass between the utility power
and the battery backup. Line Interactive UPS system consists of an Auto
Voltage Regulator (AVR), a converter (AC to DC, DC to AC) with battery
charger, a battery and a communication port as an option.
INPUT
POWER
SOURCES
AVR
AC
DC
CONVERTER
OUTPUT
POWER
SOURCES
BATTERY
Figure 1. Sample Diagram for Line Interactive UPS
A Line Interactive UPS system provides protection against spikes and
switching transients. The system usually offers adequate protection as
long as the power sags do not occur continuously.
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LINE INTERACTIVE VS ONLINE
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4/4/13 11:49 AM