9328900990 Rev L BE1-951 General Information i
SECTION 1 • GENERAL INFORMATION
TABLE OF CONTENTS
SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1
DESCRIPTION....................................................................................................................................... 1-1
FEATURES............................................................................................................................................ 1-1
Input and Output Functions................................................................................................................ 1-1
Protection and Control Functions....................................................................................................... 1-2
Metering Functions............................................................................................................................. 1-3
Reporting and Alarm Functions.......................................................................................................... 1-3
BESTlogic Programmable Logic ........................................................................................................ 1-4
Write Access Security ........................................................................................................................ 1-5
Human-Machine Interface (HMI)........................................................................................................ 1-5
Communication................................................................................................................................... 1-5
PRIMARY APPLICATIONS ................................................................................................................... 1-5
MODEL AND STYLE NUMBER DESCRIPTION................................................................................... 1-6
General............................................................................................................................................... 1-6
Sample Style Number ........................................................................................................................ 1-6
OPERATIONAL SPECIFICATIONS ...................................................................................................... 1-7
Metered Current Values and Accuracy .............................................................................................. 1-7
Metered Voltage Values and Accuracy.............................................................................................. 1-7
Metered Frequency Values and Accuracy ......................................................................................... 1-7
Calculated Values and Accuracy ....................................................................................................... 1-8
Energy Data Reporting....................................................................................................................... 1-8
Real Time Clock................................................................................................................................. 1-8
IRIG .................................................................................................................................................... 1-8
Contact Inputs Recognition Time....................................................................................................... 1-9
Time Overcurrent Functions............................................................................................................... 1-9
Time Current Characteristic Curves................................................................................................... 1-9
Instantaneous Overcurrent Functions................................................................................................ 1-9
Directional Element (67)................................................................................................................... 1-10
Volts/HZ (24) .................................................................................................................................... 1-10
Directional Power (32, 132).............................................................................................................. 1-11
Sync-Check (25)............................................................................................................................... 1-11
Sync-Check, Voltage Monitor (25VM).............................................................................................. 1-11
Phase Undervoltage Function (27P)................................................................................................ 1-11
Auxiliary Undervoltage Function (27X)............................................................................................. 1-12
Negative-Sequence Voltage Protection (47).................................................................................... 1-12
Phase Overvoltage Function (59P).................................................................................................. 1-12
Auxiliary Overvoltage Function (59X, 159X) .................................................................................... 1-13
Over/Underfrequency Functions (81, 181, 281, 381, 481, 581)....................................................... 1-13
VT Fuse Loss Detection (60FL) ....................................................................................................... 1-13
Reclosing Timers (79) ...................................................................................................................... 1-13
Breaker Fail Timer (BF).................................................................................................................... 1-13
General Purpose Timers (62, 162)................................................................................................... 1-14
Automatic Setting Group Characteristics ......................................................................................... 1-14
BESTlogic Update Rate ................................................................................................................... 1-14
GENERAL SPECIFICATIONS............................................................................................................. 1-14
AC Current Inputs With 5 A CT........................................................................................................ 1-14
AC Current Inputs with 1 A CT......................................................................................................... 1-14
Phase AC Voltage Inputs ................................................................................................................. 1-15
Auxiliary AC Voltage Inputs.............................................................................................................. 1-15
Analog to Digital Converter .............................................................................................................. 1-15
Power Supply ................................................................................................................................... 1-15
Output Contacts ............................................................................................................................... 1-15
Control Inputs................................................................................................................................... 1-15
Communication Ports....................................................................................................................... 1-16
Display.............................................................................................................................................. 1-16
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