ABB RELION 650 Series Applications Manual page 10

Table of contents
8.4 Four step residual overcurrent protection EF4PTOC ............................................................ 143
8.4.1 Identification.............................................................................................................................. 143
8.4.2 Application.................................................................................................................................. 143
8.4.3 Setting guidelines..................................................................................................................... 145
8.4.3.1 Settings for each step (x = 1, 2, 3 and 4)............................................................................ 145
8.4.3.2 Common settings for all steps............................................................................................ 147
8.4.3.3 2nd harmonic restrain........................................................................................................... 148
8.4.3.4 Parallel transformer inrush current logic.......................................................................... 148
8.4.3.5 Switch onto fault logic.......................................................................................................... 149
8.4.3.6 Line application example......................................................................................................150
8.5 Sensitive directional residual overcurrent and power protection SDEPSDE .................... 154
8.5.1 Identification.............................................................................................................................. 154
8.5.2 Application.................................................................................................................................. 154
8.5.3 Setting guidelines......................................................................................................................156
8.6 Breaker failure protection CCRBRF............................................................................................ 162
8.6.1 Identification.............................................................................................................................. 163
8.6.2 Application.................................................................................................................................. 163
8.6.3 Setting guidelines......................................................................................................................163
8.7 Stub protection STBPTOC ...........................................................................................................166
8.7.1 Identification.............................................................................................................................. 166
8.7.2 Application..................................................................................................................................166
8.7.3 Setting guidelines......................................................................................................................167
8.8 Pole discordance protection CCPDSC....................................................................................... 167
8.8.1 Identification.............................................................................................................................. 168
8.8.2 Application..................................................................................................................................168
8.8.3 Setting guidelines..................................................................................................................... 168
8.9 Directional underpower protection GUPPDUP........................................................................ 169
8.9.1 Identification.............................................................................................................................. 169
8.9.2 Application..................................................................................................................................169
8.9.3 Setting guidelines...................................................................................................................... 171
8.10 Directional overpower protection GOPPDOP ..........................................................................174
8.10.1 Identification.............................................................................................................................. 174
8.10.2 Application.................................................................................................................................. 174
8.10.3 Setting guidelines......................................................................................................................176
8.11 Broken conductor check BRCPTOC ........................................................................................... 179
8.11.1 Identification.............................................................................................................................. 179
8.11.2 Application.................................................................................................................................. 179
8.11.3 Setting guidelines......................................................................................................................179
Section 9 Voltage protection......................................................................................... 181
9.1 Two step undervoltage protection UV2PTUV ..........................................................................181
9.1.1 Identification.............................................................................................................................. 181
9.1.2 Application.................................................................................................................................. 181
9.1.3 Setting guidelines...................................................................................................................... 181
9.1.3.1 Equipment protection, such as for motors and generators......................................... 182
9.1.3.2 Disconnected equipment detection...................................................................................182
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Application manual