ABB ProtectIT REL 551 2.5 Installation And Commissioning Manual page 7

Releasing the function(s) to be tested ........................................ 105
Checking the disturbance report settings ................................... 105
Identifying the function to test in
the technical reference manual
Autorecloser (AR) ............................................................................ 107
Preparing .................................................................................... 108
Checking the AR functionality..................................................... 109
Checking the reclosing condition ................................................ 109
Checking the Inhibit signal..................................................... 110
Checking the closing onto a fault........................................... 110
Checking the breaker not ready ............................................ 110
Checking the synchro-check
condition (for three-phase reclosing cycle) ............................ 110
Checking the operation Stand-by and Off ............................. 110
Testing the multi-breaker arrangement....................................... 111
Completing the test..................................................................... 111
Breaker failure protection (BFP) ...................................................... 112
Verifying the settings .................................................................. 112
Verifying the retrip setting ........................................................... 112
Checking the retrip function with retrip set to off.................... 112
Checking the retrip function with current check ..................... 112
Checking the retrip function without current check ................ 113
Completing the test..................................................................... 113
Broken conductor check (BRC) ....................................................... 114
Measuring the operate and time limit of set values .................... 114
Communication channel test logic (CCHT)...................................... 115
Testing the logic.......................................................................... 115
Current circuit supervision (CTSU) .................................................. 116
Time delayed residual overcurrent protection (TEF)........................ 117
Checking the operate values of the
current measuring elements
Disturbance recorder (DR)............................................................... 120
Event counter (CN) .......................................................................... 121
Event function (EV) .......................................................................... 122
Event recorder (ER) ......................................................................... 123
Instantaneous non-directional overcurrent protection (IOC) ............ 124
Measuring the operate limit of set values ................................... 124
Phase overcurrent protection ................................................ 124
Residual overcurrent protection (non-dir.) ............................. 124
Completing the test..................................................................... 124
Line differential protection, phase segregated (DIFL)...................... 125
Testing the line differential protection ......................................... 127
Testing the charging current compensation................................ 129
Completing the test..................................................................... 130
Supervision of AC input quantities (DA)........................................... 131
Verifying the settings .................................................................. 131
Completing the test..................................................................... 131
Supervision of mA input quantities (MI) ........................................... 132
Verifying the settings .................................................................. 132
Completing the test..................................................................... 133
Multiple command (CM)................................................................... 134
Overload supervision (OVLD) .......................................................... 135
Measuring the operate and time limit of set values .................... 135
Contents
........................................... 106
............................................... 117