Sel 411L - Page 27

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Date Code 20151029 SEL-411L Relay
List of Figures
Figure 3.138 Phase Instantaneous/Definite-Time Overcurrent Elements............................................. P.3.203
Figure 3.139 Residual Ground Instantaneous/Directional Overcurrent Elements...........................................P.3.204
Figure 3.140 Negative-Sequence Instantaneous/Directional Overcurrent Elements............................ P.3.205
Figure 3.141 U.S. Curves U1, U2, U3, and U4.................................................................................... P.3.207
Figure 3.142 U.S. Curve U5 and IEC Curves C1, C2, and C3............................................................. P.3.208
Figure 3.143 IEC Curves C4 and C5.................................................................................................... P.3.209
Figure 3.144 Time-Overcurrent Logic.................................................................................................. P.3.210
Figure 3.145 Over/Undervoltage Logic................................................................................................ P.3.213
Figure 3.146 SOTF Logic Diagram...................................................................................................... P.3.219
Figure 3.147 Required Zone Directional Settings................................................................................ P.3.220
Figure 3.148 DCB Logic Diagram ....................................................................................................... P.3.224
Figure 3.149 Permissive Trip Receiver Logic Diagram ....................................................................... P.3.229
Figure 3.150 Directional Permissive Trip Receiver Logic Diagram .................................................... P.3.229
Figure 3.151 POTT Logic Diagram...................................................................................................... P.3.230
Figure 3.152 POTT Scheme Logic (ECOMM := POTT3) With Echo and Weak Infeed..................... P.3.231
Figure 3.153 POTT Cross-Country Logic Diagram............................................................................. P.3.232
Figure 3.154 Permissive Trip Received Logic Diagram....................................................................... P.3.235
Figure 3.155 DCUB Logic Diagram .................................................................................................... P.3.236
Figure 3.156 Trip Logic Diagram......................................................................................................... P.3.242
Figure 3.157 87L Single-Pole Trip Select Logic.................................................................................. P.3.244
Figure 3.158 Two Circuit Breakers Trip Logic Diagram...................................................................... P.3.246
Figure 3.159 Trip A Unlatch Logic...................................................................................................... P.3.247
Figure 3.160 Trip During Open Pole.................................................................................................... P.3.247
Figure 3.161 Scheme 1 Logic Diagram................................................................................................ P.3.248
Figure 3.162 Scheme 2 Three-Pole Circuit Breaker Failure Protection Logic..................................... P.3.249
Figure 3.163 Scheme 2 Single-Pole Circuit Breaker Failure Protection Logic.................................... P.3.250
Figure 3.164 Current-Supervised Three-Pole Retrip Logic ................................................................. P.3.250
Figure 3.165 Current-Supervised Single-Pole Retrip Logic................................................................. P.3.251
Figure 3.166 No Current/Residual Current Circuit Breaker Failure Protection Logic Diagram.......... P.3.251
Figure 3.167 Circuit Breaker Failure Seal-In Logic Diagram.............................................................. P.3.256
Figure 3.168 Failure to Interrupt Load Current Logic Diagram........................................................... P.3.256
Figure 3.169 Flashover Protection Logic Diagram .............................................................................. P.3.257
Figure 3.170 Circuit Breaker Failure Trip Logic Diagram................................................................... P.3.257
Figure 3.171 Over/Underfrequency Logic............................................................................................ P.3.258
Figure 3.172 Frequency Source Logic.................................................................................................. P.3.258
Figure 3.173 Undervoltage Supervision Logic..................................................................................... P.3.258
Figure 3.174 Table Y12. Summary of the Valpha and 81UVSP Calculations ..................................... P.3.260
Figure 3.175 EIA-422 Three-Terminal, Master/Outstation Serial Application Using SEL-3094
Interface Converters..................................................................................................... P.3.262
Figure 3.176 Four-Terminal Ethernet Application Using SEL ICON Multiplexers ..........................................P.3.262
Figure 3.177 Two Terminal Serial Application using Redundant Channels ........................................ P.3.263
Figure 3.178 EIA-422 Typical Connection........................................................................................... P.3.265
Figure 3.179 Back-to-Back EIA-422 Connection ................................................................................ P.3.266
Figure 3.180 Back-to-Back EIA-422 Connection Using the SEL-3094 .............................................. P.3.266
Figure 3.181 CCITT G.703 Typical Connection.................................................................................. P.3.267
Figure 3.182 Back-to-Back CCITT G.703 Connection........................................................................ P.3.267
Figure 3.183 C37.94, 850/1300 nm Typical Connection...................................................................... P.3.268
Figure 3.184 C37.94 Back-to-Back Connection................................................................................... P.3.269
Figure 3.185 Typical Ethernet Connections ......................................................................................... P.3.272
Figure 3.186 Redundant Ethernet Connection...................................................................................... P.3.272
Figure 3.187 Shared Ethernet Connection............................................................................................ P.3.273
Figure 3.188 Line Module of a Single ICON for Transporting Current Differential Data of Eight
Relays to the SONET Network.................................................................................... P.3.276
Figure 3.189 Isolated Redundant Network Topology With Star Configuration and a Ring
Topology With Dedicated, Managed Switches Between Substations......................... P.3.277
Figure 3.190 Redundant Isolated Ring-Connected Network With Dedicated, Managed Switches ..... P.3.277
Figure 3.191 Isolated Ring-Connected Network With Dedicated, Managed Switches........................ P.3.278
Figure 3.192 Isolated, Star-Connected Network With Managed or Unmanaged Switches.................. P.3.278