GE P643 User Manual

Figure 118: 5th harmonic blocking time delay in PSL 256
Figure 119: Overfluxing protection logic 257
Figure 120: Multi-stage overfluxing characteristic 258
Figure 121: Scheme logic for multi-stage overfluxing characteristic 258
Figure 122: Underfrequency logic (single stage) 259
Figure 123: Overfrequency logic (single stage) 260
Figure 124: Fault recorder stop conditions 271
Figure 125: CT Exclusion logic 276
Figure 126: CT input exclusion - 1.5 CB application 277
Figure 127: CT input exclusion - auxiliary contact connection 277
Figure 128: Pole Dead logic - P642 279
Figure 129: Pole Dead logic - P643 and P645 280
Figure 130: Forcing CB Closed signals 281
Figure 131: VTS logic (P642 with 2 single-phase VTs) 288
Figure 132: VTS logic (P643 and P645 with 3-phase VTs) 289
Figure 133: CTS restraint region increase 291
Figure 134: CTS logic diagram 292
Figure 135: TCS Scheme 1 294
Figure 136: PSL for TCS Scheme 1 295
Figure 137: TCS Scheme 2 295
Figure 138: PSL for TCS Scheme 2 296
Figure 139: TCS Scheme 3 296
Figure 140: PSL for TCS Scheme 3 297
Figure 141: Scheme Logic Interfaces 303
Figure 142: Trip LED logic 307
Figure 143: RS485 biasing circuit 318
Figure 144: Remote communication using K-Bus 319
Figure 145: IED attached to separate LANs 322
Figure 146: IED attached to redundant Ethernet star or ring circuit 323
Figure 147: IED, bay computer and Ethernet switch with self healing ring facilities 324
Figure 148: Redundant Ethernet ring architecture with IED, bay computer and Ethernet switches 324
Figure 149: Redundant Ethernet ring architecture with IED, bay computer and Ethernet switches
after failur
e
324
Figure 150: Dual homing mechanism 325
Figure 151: Application of Dual Homing Star at substation level 326
Figure 152: IED and REB switch IP address configuration 327
Figure 153: DIP switches for setting IP address 327
Figure 154: Control input behaviour 339
Figure 155: Manual selection of a disturbance record 355
Figure 156: Automatic selection of disturbance record - method 1 356
Table of Figures P64x
xx P64x-TM-EN-1.3

GE P643 Specifications

General

Brand	GE
Model	P643
Category	Relays
Language	English