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9170600990 Rev H BE1-27/59 Introduction v

CONTENTS

SECTION 1 • GEN

ERAL INFORMATION................................................................................................ 1-1

PURPOSE...........................................................................................................................................

1-1

APPLICATION ....................................................................................................................................

1-1

Motor Protection ...........................................................................................................................

1-1

Automatic Transfer Switching.......................................................................................................

1-1

Cogeneration ................................................................................................................................

1-1

Transformer Protection.................................................................................................................

1-1

Ground Fault Detection ................................................................................................................

1-1

MODEL AND STYLE NUMBER..........................................................................................................

1-2

Style Number Example.................................................................................................................

1-4

SPECIFICATIONS ..............................................................................................................................

1-4

Voltage Sensing Inputs.................................................................................................................

1-4

Undervoltage and Overvoltage Pickup Range

............................................................................. 1-4

Timing Characteristics ..................................................................................................................

1-4

Output Contacts............................................................................................................................

1-5

Power Supply................................................................................................................................

1-5

Target Indicators...........................................................................................................................

1-5

Type Tests ....................................................................................................................................

1-5

Physical ........................................................................................................................................

1-6

Agency Recognition/Certification..................................................................................................

1-6

SECTION 2 • C

ONTROLS AND INDICATORS ....................................................................................... 2-1

INTRODUCTION.................................................................................................................................

2-1

SECTION 3 • FU

NCTIONAL DESCRIPTION........................................................................................... 3-1

INTRODUCTION.................................................................................................................................

3-1

SYSTEM VOLTAGES .........................................................................................................................

3-1

STEP-DOWN TRANSFORMER ......................................................................................................... 3-2

LOW-PASS FILTER AND FULL WAVE RECTIFIER .........................................................................

3-2

PICKUP SETTINGS............................................................................................................................

3-2

PICKUP COMPARATORS..................................................................................................................

3-2

TIMER CIRCUIT .................................................................................................................................

3-2

OUTPUTS ...........................................................................................................................................

3-6

PUSH-TO-ENERGIZE OUTPUT PUSHBUTTONS ............................................................................ 3-6

POWER SUPPLY STATUS OUTPUT ................................................................................................ 3-6

POWER SUPPLY ...............................................................................................................................

3-6

TARGET INDICATORS ......................................................................................................................

3-6

Internally Operated Targets..........................................................................................................

3-6

Current Operated Targets ............................................................................................................

3-6

SECTION 4 • IN

STALLATION.................................................................................................................. 4-1

INTRODUCTION.................................................................................................................................

4-1

RELAY OPERATING GUIDELINES AND PRECAUTIONS ............................................................... 4-1

MOUNTING.........................................................................................................................................

4-1

CONNECTIONS................................................................................................................................

4-14

MAINTENANCE ................................................................................................................................

4-19

STORAGE.........................................................................................................................................

4-19

SECTION 5 • TESTIN

G ............................................................................................................................ 5-1

INTRODUCTION.................................................................................................................................

5-1

REQUIRED TEST EQUIPMENT ........................................................................................................5

-1

OPERATIONAL TEST ........................................................................................................................

5-1

Power Supply Status Output ........................................................................................................

5-1

Pickup ........................................................................................................................................... 5-1

Timing ...........................................................................................................................................

5-4

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Brand	Basler
Model	BE1-27
Category	Relays
Language	English

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