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9171000990 Rev F
BE1-50 Introduction
v
CONTENTS
SECTION 1
GENERAL INFORMATION ................................................................................................ 1-1
PURPOSE
........................................................................................................................................... 1-1
APPLICATION
.................................................................................................................................... 1-1
Ground
Fault
Detection
................................................................................................................ 1-1
Phase
.................................................................................................................. 1-1
Combination with Other Protective Devices ................................................................................. 1-2
MODEL AND STYLE NUMBER .......................................................................................................... 1-2
Style
Number
Example
................................................................................................................. 1-3
SPECIFICATIONS
.............................................................................................................................. 1-3
Current
Sensing
............................................................................................................................ 1-3
Pickup
Range
............................................................................................................................... 1-4
Accuracy
........................................................................................................................... 1-4
Dropout
......................................................................................................................................... 1-4
Timing
........................................................................................................................................... 1-4
Output
Contacts
............................................................................................................................ 1-4
Power
Supply................................................................................................................................ 1-5
Target
Indicators
........................................................................................................................... 1-5
Type
Tests
.................................................................................................................................... 1-5
Physical
........................................................................................................................................ 1-5
Agency
Recognition/Certification.................................................................................................. 1-6
SECTION 2
CONTROLS AND INDICATORS ....................................................................................... 2-1
INTRODUCTION
................................................................................................................................. 2-1
SECTION 3
FUNCTIONAL DESCRIPTION ........................................................................................... 3-1
................................................................................................................................. 3-1
STEP-DOWN
TRANSFORMER
......................................................................................................... 3-1
FULL-WAVE
RECTIFIERS
................................................................................................................. 3-1
RESPONSE
CHARACTERISTICS
..................................................................................................... 3-1
PICKUP
SETTINGS
............................................................................................................................ 3-2
COMPARATORS.................................................................................................................. 3-2
PULSE
STRETCHERS
....................................................................................................................... 3-2
OUTPUTS
........................................................................................................................................... 3-2
TIMING
................................................................................................................................................ 3-2
PUSH-TO-ENERGIZE OUTPUT PUSHBUTTONS ............................................................................ 3-2
POWER SUPPLY STATUS OUTPUT ................................................................................................ 3-2
POWER
SUPPLY
............................................................................................................................... 3-2
TARGET
INDICATORS
...................................................................................................................... 3-2
Internally
Operated
Targets
.......................................................................................................... 3-2
............................................................................................................ 3-3
SECTION 4
INSTALLATION .................................................................................................................. 4-1
................................................................................................................................. 4-1
RELAY OPERATING GUIDELINES AND PRECAUTIONS ............................................................... 4-1
MOUNTING
......................................................................................................................................... 4-1
CONNECTIONS
................................................................................................................................ 4-14
MAINTENANCE
................................................................................................................................ 4-20
STORAGE
......................................................................................................................................... 4-20
SECTION 5
TESTING ............................................................................................................................ 5-1
................................................................................................................................. 5-1
OPERATIONAL
TEST
........................................................................................................................ 5-1