ABB RELION 650 Series Applications Manual page 9

6.2.3.1 Setting and configuration...................................................................................................... 83
6.2.3.2 Settings......................................................................................................................................84
Section 7 Current protection........................................................................................... 85
7.1 Instantaneous phase overcurrent protection PHPIOC ............................................................85
7.1.1 Identification................................................................................................................................85
7.1.2 Application....................................................................................................................................85
7.1.3 Setting guidelines....................................................................................................................... 85
7.1.3.1 Meshed network without parallel line..................................................................................86
7.1.3.2 Meshed network with parallel line........................................................................................ 88
7.2 Four step phase overcurrent protection OC4PTOC................................................................. 89
7.2.1 Identification................................................................................................................................89
7.2.2 Application....................................................................................................................................89
7.2.3 Setting guidelines....................................................................................................................... 90
7.2.3.1 Settings for each step............................................................................................................. 91
7.2.3.2 2nd harmonic restrain.............................................................................................................94
7.3 Instantaneous residual overcurrent protection EFPIOC .........................................................98
7.3.1 Identification................................................................................................................................99
7.3.2 Application....................................................................................................................................99
7.3.3 Setting guidelines....................................................................................................................... 99
7.4 Four step residual overcurrent protection EF4PTOC ............................................................ 101
7.4.1 Identification.............................................................................................................................. 101
7.4.2 Application.................................................................................................................................. 101
7.4.3 Setting guidelines..................................................................................................................... 103
7.4.3.1 Settings for each step (x = 1, 2, 3 and 4)............................................................................ 103
7.4.3.2 Common settings for all steps............................................................................................105
7.4.3.3 2nd harmonic restrain........................................................................................................... 106
7.4.3.4 Parallel transformer inrush current logic.......................................................................... 106
7.4.3.5 Switch onto fault logic.......................................................................................................... 107
7.4.3.6 Transformer application example...................................................................................... 108
7.5 Sensitive directional residual overcurrent and power protection SDEPSDE ..................... 111
7.5.1 Identification............................................................................................................................... 111
7.5.2 Application...................................................................................................................................111
7.5.3 Setting guidelines...................................................................................................................... 113
7.6 Thermal overload protection, two time constants TRPTTR ................................................. 119
7.6.1 Identification.............................................................................................................................. 120
7.6.2 Application.................................................................................................................................. 120
7.6.3 Setting guideline........................................................................................................................ 121
7.7 Breaker failure protection CCRBRF.............................................................................................122
7.7.1 Identification.............................................................................................................................. 123
7.7.2 Application.................................................................................................................................. 123
7.7.3 Setting guidelines......................................................................................................................123
7.8 Directional underpower protection GUPPDUP........................................................................ 126
7.8.1 Identification.............................................................................................................................. 126
7.8.2 Application.................................................................................................................................. 126
7.8.3 Setting guidelines...................................................................................................................... 127
Application manual
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