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2-2 Theory of Operation
The
Regulator PRO
™
NetUPS
Series is a line-interactive UPS with Automatic
Voltage Regulation (AVR) that provides clean and reliable AC power to the
computer system through the input and output EMI filter, surge suppressor
and line-conditioning transformer (autotransformer) that can boost or
buck-down line voltage according to the AC input voltage amplitude.
In normal condition, the UPS supplies power from the utility power to the
load (computer system, workstation, server or other device). The bilateral
converter works as a charger to charge the battery and at the same time
keeps the battery fully charged. This term is called "ON UTILITY MODE".
When utility power fails, the converter supplies AC power to the load by
transferring power coming from the batteries. This term is called "ON
BATTERY MODE". The UPS supplies regulated power, shutdown results
when battery power becomes low.
BLOCK DIAGRAM OF LINE INTERACTIVE UPS
2-3 Features
Intelligent Boost and Intelligent Buck-Down Line-Conditioning
When brownout or over utility voltage is detected, the boost and buck-down
line-conditioning will automatically adjust the incoming voltage and deliver a
regulated AC power to the equipment connected to the UPS.
Introduction
Utility
AVR: Auto Voltage Regulator
EMI filter &
Surge
Suppressor
AC
OUTPUT
EMI filter &
Surge
Suppressor
Bi-lateral
converter
BATTERY
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