Basler Electric BE1-11t - Manual (Page 6)

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Instantaneous Overcurrent (50) Protection ............................................................................................ 69
Element Operation ................................................................................................................................... 69
Logic Connections ................................................................................................................................... 70
Operational Settings ................................................................................................................................ 71
Breaker Failure (50BF) Protection ........................................................................................................... 73
Element Operation ................................................................................................................................... 73
Logic Connections ................................................................................................................................... 74
Operational Settings ................................................................................................................................ 75
Inverse Overcurrent (51) Protection ........................................................................................................ 77
Element Operation ................................................................................................................................... 77
Logic Connections ................................................................................................................................... 82
Operational Settings ................................................................................................................................ 82
Directional Overcurrent (67) Protection .................................................................................................. 85
Polarization Methods ............................................................................................................................... 85
Maximum Torque Angle and Directional Tests ....................................................................................... 87
Theory of Using Sequence Impedances for Fault Direction .................................................................... 88
Phase Current Differential (87) Protection ............................................................................................. 91
Element Operation ................................................................................................................................... 91
Logic Connections ................................................................................................................................... 94
Settings .................................................................................................................................................... 95
Neutral Current Differential (87N) Protection ......................................................................................... 99
Element Operation ................................................................................................................................... 99
Logic Connections ................................................................................................................................. 101
Operational Settings .............................................................................................................................. 102
Resistance Temperature Detector (49RTD) Protection ....................................................................... 103
Element Operation ................................................................................................................................. 103
Logic Connections ................................................................................................................................. 104
Operational Settings .............................................................................................................................. 104
Remote RTD Metering........................................................................................................................... 105
Analog Input Protection ......................................................................................................................... 107
Element Operation ................................................................................................................................. 107
Logic Connections ................................................................................................................................. 108
Operational Settings .............................................................................................................................. 108
Remote Analog Input Metering .............................................................................................................. 109
Virtual Control Switches (43) ................................................................................................................. 111
Element Operation ................................................................................................................................. 111
Logic Connections ................................................................................................................................. 113
Operational Settings .............................................................................................................................. 113
Logic Timers (62) .................................................................................................................................... 115
Element Operation ................................................................................................................................. 115
Logic Connections ................................................................................................................................. 118
Operational Settings .............................................................................................................................. 118
Lockout Functions (86) ........................................................................................................................... 121
Element Operation ................................................................................................................................. 121
Logic Connections ................................................................................................................................. 121
Operational Settings .............................................................................................................................. 121
Retrieving Lockout Status from the BE1-11t ......................................................................................... 122
Breaker Control Switch (101) ................................................................................................................. 123
Element Operation ................................................................................................................................. 123
Logic Connections ................................................................................................................................. 124
Operational Settings .............................................................................................................................. 125
Contents BE1-11t