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Date Code 990430 Loss-of-Potential, Load Encroachment, and Directional Element Logic iii

SEL-351P Manual Técnico

Figure 4.20: Direction Forward/Reverse Logic for Negative-Sequence Overcurrent Elements.............4-25

Figure 4.21: Direction Forward/Reverse Logic for Phase Overcurrent Elements...................................

4-26

Table of Contents

Table of Contents3
Section 1: Factory-Set Logic93
Section 2: Additional Installation Details155
Section 3: Overcurrent, Voltage, Synchronism Check, and Frequency Elements/Section 3: Overcurrent, Voltage, Synchronism Check, and Frequency Elements165
Section 4: Loss-Of-Potential, Load Encroachment, and Directional Element Logic/Section 4: Loss-Of-Potential, Load Encroachment, and Directional Element Logic219
Section 5: Trip and Target Logic259
Section 6: Close and Reclose Logic293
Section 7: Inputs, Outputs, Timers, and Other/Control Logic321
- Section 7: Inputs, Outputs, Timers, and Other325
- Control Logic325
Section 8: Breaker/Recloser Monitor, Battery/System Monitor, Metering, and Load Profile369
- Section 8: Breaker/Recloser Monitor, Battery371
- System Monitor, Metering, and Load Profile371
Section 10: Serial Port Communications and Commands/Section 10: Serial Port Communications and Commands483
Section 13: Testing and Troubleshooting586
Appendix I: Mirrored Bits600