GE P4A, Technical Manual, Page: 24 / 850

Figure 119: Overfrequency logic (single stage) 240
Figure 120: Rate of change of frequency logic (single stage) 241
Figure 121: Fault recorder stop conditions 248
Figure 122: Broken Current Accumulator logic diagram 253
Figure 123: CB Trip Counter logic diagram 253
Figure 124: Operating Time Accumulator 254
Figure 125: Excessive Fault Frequency logic diagram 254
Figure 126: Reset Lockout Alarm logic diagram 255
Figure 127: CB Condition Monitoring logic diagram 256
Figure 128: Reset Circuit Breaker Lockout Logic Diagram (Module 57) 257
Figure 129: CB State Monitor logic diagram (Module 1) 260
Figure 130: Hotkey menu navigation 262
Figure 131: Default function key PSL 263
Figure 132: Remote Control of Circuit Breaker 264
Figure 133: CB Control logic diagram (Module 43) 265
Figure 134: Pole Dead logic 266
Figure 135: Check Synchronisation vector diagram 269
Figure 136: Voltage Monitor for CB Closure (Module 59) 270
Figure 137: Check Synchronisation Monitor for CB closure (Module 60) 271
Figure 138: System Check PSL 272
Figure 139: Current Differential Starter Supervision Logic 280
Figure 140: Current Differential function Start logic 281
Figure 141: Switched Communication Path supervision 282
Figure 142: Communication Asymmetry Supervision 283
Figure 143: VTS logic 288
Figure 144: Differential CTS 290
Figure 145: Standard CTS 291
Figure 146: TCS Scheme 1 293
Figure 147: PSL for TCS Scheme 1 294
Figure 148: TCS Scheme 2 295
Figure 149: PSL for TCS Scheme 2 295
Figure 150: TCS Scheme 3 296
Figure 151: PSL for TCS Scheme 3 296
Figure 152: Scheme Logic Interfaces 301
Figure 153: Trip LED logic 305
Figure 154: Fibre teleprotection connections for a six-terminal scheme 315
Figure 155: Two terminal single channel scheme 315
Figure 156: Two terminal dual channel scheme 316
Figure 157: Three terminal scheme 316
Figure 158: Four terminal scheme 317
Table of Figures P54A/B/C/E
xxii P54xMED-TM-EN-1