Belkin F6C700-EUR user manual Theory of Operation, Block Diagram of Line Interactive UPS

P73335u_UPS_man.qxd 4/30/01 12:19 PM Page 4

Introduction

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

Utility		AVR: Auto Voltage Regulator
	EMI filter &
	Surge
	Suppressor
		Bi-lateral	EMI filter &	AC
	BATTERY		Surge
		converter		OUTPUT
			Suppressor

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.

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