CONTENTS
SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1
PURPOSE ........................................................................................................................................... 1-1
APPLICATION .................................................................................................................................... 1-1
High Resistance Grounding .......................................................................................................... 1-1
Ungrounded Systems ................................................................................................................... 1-2
MODEL AND STYLE NUMBER .......................................................................................................... 1-2
Style Number Example ................................................................................................................. 1-3
SPECIFICATIONS .............................................................................................................................. 1-3
Voltage Sensing Inputs ................................................................................................................. 1-3
Undervoltage Sensing Input Range ............................................................................................. 1-4
Pickup Accuracy ........................................................................................................................... 1-4
Dropout ......................................................................................................................................... 1-4
Timing Characteristics .................................................................................................................. 1-4
Output Contacts ............................................................................................................................ 1-4
Power Supply................................................................................................................................ 1-5
Target Indicators ........................................................................................................................... 1-5
Type Tests .................................................................................................................................... 1-5
Physical ........................................................................................................................................ 1-6
Agency Recognition/Certification.................................................................................................. 1-6
SECTION 2 • CONTROLS AND INDICATORS ....................................................................................... 2-1
INTRODUCTION ................................................................................................................................. 2-1
SECTION 3 • FUNCTIONAL DESCRIPTION ........................................................................................... 3-1
INTRODUCTION ................................................................................................................................. 3-1
INPUTS ............................................................................................................................................... 3-1
FILTERS ............................................................................................................................................. 3-1
OVERVOLTAGE COMPARATOR ...................................................................................................... 3-1
DEFINITE TIME DELAY (OPTIONAL) ................................................................................................ 3-1
INVERSE TIME DELAY (OPTIONAL) ................................................................................................ 3-2
REFERENCE VOLTAGE CIRCUIT .................................................................................................... 3-2
UNDERVOLTAGE ELEMENT (OPTIONAL)....................................................................................... 3-2
Undervoltage Operation ............................................................................................................... 3-2
Undervoltage Inhibit ...................................................................................................................... 3-2
OUTPUTS ........................................................................................................................................... 3-2
PUSH-TO-ENERGIZE OUTPUT PUSHBUTTONS ............................................................................ 3-2
POWER SUPPLY STATUS OUTPUT ................................................................................................ 3-3
POWER SUPPLY ............................................................................................................................... 3-3
TARGET INDICATORS ...................................................................................................................... 3-3
Internally Operated Targets .......................................................................................................... 3-3
Current Operated Targets ............................................................................................................ 3-3
SECTION 4 • INSTALLATION.................................................................................................................. 4-1
INTRODUCTION ................................................................................................................................. 4-1
RELAY OPERATING GUIDELINES AND PRECAUTIONS ............................................................... 4-1
MOUNTING ......................................................................................................................................... 4-1
CONNECTIONS .................................................................................................................................. 4-9
MAINTENANCE ................................................................................................................................ 4-12
STORAGE ......................................................................................................................................... 4-12
SECTION 5 • TESTING ............................................................................................................................ 5-1
INTRODUCTION ................................................................................................................................. 5-1
OPERATIONAL TEST ........................................................................................................................ 5-1
9171400990 Rev K
BE1-59N Introduction
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