Marathon DVR 2000E - Functional Description

To Next Page

To Previous Page

ection

SECTION 3 • FUNCTIONAL DESCRIPTION

TABLE OF CONTENTS

SECTION 3 • FUNCTIONAL DESCRIPTION ............................................................................................18

INTRODUCTION..................................................................................................................................18

DVR2000E FUNCTION BLOCKS ........................................................................................................18

Analog Inputs.................................................................................................................................18

Generator Voltage ...............................................................................................................................19

Phase B Line Current..........................................................................................................................19

Field Voltage (VFIELD)...........................................................................................................................19

Field Current (IFIELD) ............................................................................................................................19

Analog (Auxiliary) Input .......................................................................................................................19

Contact Input Circuits ....................................................................................................................19

Raise ...................................................................................................................................................20

Lower...................................................................................................................................................20

Var/Power Factor Control (52J/K) Option ............................................................................................20

Parallel Generator Compensation (52L/M)..........................................................................................20

Communication Port ......................................................................................................................20

Microprocessor ..............................................................................................................................20

Power Input Stage .........................................................................................................................20

Power Supply.................................................................................................................................20

Power Amplier Stage ...................................................................................................................20

Front Panel Indicators....................................................................................................................20

Front Panel Switches.....................................................................................................................21

Relay Output..................................................................................................................................21

DVR2000E OPERATING FEATURES..................................................................................................21

Operating Modes ...........................................................................................................................21

Automatic Voltage Regulation Mode....................................................................................................21

Manual Mode.......................................................................................................................................21

Var Control Mode (Optional)................................................................................................................21

Power Factor Control Mode (Optional) ................................................................................................21

Reactive Droop Compensation......................................................................................................22

Underfrequency .............................................................................................................................22

Generator Underfrequency..................................................................................................................22

Engine Unloading................................................................................................................................22

Protection ......................................................................................................................................22

Overexcitation Shutdown (Field Voltage).............................................................................................23

Generator Overvoltage Shutdown.......................................................................................................23

DVR Overtemperature Shutdown........................................................................................................23

Loss of Generator Sensing Shutdown.................................................................................................23

Overexcitation Limiting (Field Current) ................................................................................................23

Crowbar Shutdown..............................................................................................................................24

Generator Soft Start ......................................................................................................................24

Figures

Figure 3-1. Simplied Block Diagram .........................................................................................................18

Section 2 Index

Main Index

Main Page

Marathon DVR 2000E - Functional Description

Table of Contents