9171300990 Rev R
BE1-87T Introduction
vii
CONTENTS
SECTION 1
•
GENERAL INFORMATION................................................................................................ 1-1
INTRODUCTION................................................................................................................................. 1-1
DESCRIPTION.................................................................................................................................... 1-1
APPLICATION .................................................................................................................................... 1-2
Single-Phase ................................................................................................................................ 1-2
Three-Phase ................................................................................................................................. 1-2
Percentage
Restraint.................................................................................................................... 1-2
Second-Harmonic
Restraint ......................................................................................................... 1-2
Fifth-Harmonic Restraint............................................................................................................... 1-3
Unrestrained Trip .......................................................................................................................... 1-3
OPTIONS ............................................................................................................................................ 1-3
Push-To-Energize
Output Pushbuttons........................................................................................ 1-3
Auxiliary
Output Contacts ............................................................................................................. 1-3
Power
Supply................................................................................................................................ 1-3
MODEL
AND
STYLE NUMBER.......................................................................................................... 1-4
Style
Number Example................................................................................................................. 1-4
SPECIFICATIONS .............................................................................................................................. 1-5
Current
Sensing Inputs................................................................................................................. 1-5
Current
Sensing Burden ............................................................................................................... 1-5
Tap
Setting
Control (Scaling) ....................................................................................................... 1-5
Restrained Output ........................................................................................................................ 1-5
Front
Panel Setting %................................................................................................................... 1-6
Unrestrained Output ..................................................................................................................... 1-6
Outputs ......................................................................................................................................... 1-7
Target
Indicators........................................................................................................................... 1-7
Harmonic
Attenuation ................................................................................................................... 1-7
Timing ........................................................................................................................................... 1-7
Isolation ........................................................................................................................................ 1-9
Power
Supply................................................................................................................................ 1-9
Surge
Withstand Capability .......................................................................................................... 1-9
Radio
Frequency
Interference (RFI)............................................................................................. 1-9
UL
Recognition ............................................................................................................................. 1-9
GOST-R
Certification.................................................................................................................... 1-9
Patent ........................................................................................................................................... 1-9
Shock............................................................................................................................................ 1-9
Vibration........................................................................................................................................ 1-9
Operating
Temperature .............................................................................................................. 1-10
Storage
Temperature ................................................................................................................. 1-10
Weight......................................................................................................................................... 1-10
Case
Size ................................................................................................................................... 1-10
SECTION 2
•
CONTROLS AND INDICATORS ....................................................................................... 2-1
LOCATION OF CONTROLS AND INDICATORS............................................................................... 2-1
SECTION 3
•
FUNCTIONAL DESCRIPTION........................................................................................... 3-1
GENERAL ........................................................................................................................................... 3-1
DESCRIPTION.................................................................................................................................... 3-1
Current
Transformers ................................................................................................................... 3-1
Scaling .......................................................................................................................................... 3-1
Summing....................................................................................................................................... 3-1
30
°
Internal Phase Shift (Three-Phase Relays ONLY) ................................................................ 3-1
Restrained
Trip Output ................................................................................................................. 3-3
Unrestrained
Trip Output .............................................................................................................. 3-3
Auxiliary
Relay Option .................................................................................................................. 3-4
Power
Supply................................................................................................................................ 3-4
Power
Supply
Status
Output (Optional) ....................................................................................... 3-4
Target
Indicators (Optional).......................................................................................................... 3-4
%
of
Trip ....................................................................................................................................... 3-5
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