Windings Protected | 2 | 2 | 2 | 3 | 3 | 4 |
CT/PT Inputs |
Phase Voltage Inputs | 0 | 0 | 3 | 3 | 3 | 0 |
Differential Current Inputs | 6 | 6 | 6 | 9 | 9 | 12 |
Neutral Current | 0 | 1 | 1 | 1 | 0 | 0 |
VS/VBAT Channel | 0 | 0 | 0 | 0 | 1 | 0 |
Differential and Restricted Earth Fault (REF) Elements |
Differential Protection Windings (Standard) | 2 | 2 | 2 | 3 | 3 | 4 |
REF Elements (Standard) | 0 | 1 | 1 | 1 | 0 | 0 |
Differential Protection Windings (Winding 3 Configured for REF) | | | | 2 | 2 | 3 |
REF Elements (Winding 3 Configured for REF) | | | | 2 | 2 | 2 |
Protection Elements |
24 | Volts/Hertz | | | | | | |
25 | Synchronism Check | | | | | | |
27I | Inverse-Time Undervoltage (Phase, Phase-to-Phase, Sequential, Vsync) | | | | | | |
27P | Undervoltage (Phase) With Inverse Characteristic | | | | | | |
27PP | Phase-to-Phase Undervoltage | | | | | | |
27S | VS Channel Undervoltage | | | | | | |
32 | Directional Power | | | | | | |
49RTD | Resistance Temperature Detectors (RTDs) | | | | | | |
50N | Neutral Overcurrent | | | | | | |
50 (P,G,Q) | Overcurrent (Phase, Ground, Neg. Seq.) | | | | | | |
51 (P,G,Q) | Time Overcurrent (Phase, Ground, Neg. Seq.) | | | | | | |
51N | Neutral Time Overcurrent | | | | | | |
51PC | Combined Winding Phase Time Overcurrent | | | | | | |
51GC | Combined Winding Ground Time Overcurrent | | | | | | |
59 (P,G,Q) | Overvoltage (Phase, Ground, Neg. Seq.) | | | | | | |
59 | Overvoltage (Synchronism or Battery Voltage) | | | | | | |
59I | Inverse-Time Overvoltage (Phase, Phase-to-Phase, Sequential, Vsync) | | | | | | |
59S | VS Channel Overvoltage | | | | | | |
59Q | Negative-Sequence Overvoltage | | | | | | |
81 (O,U) | Over-/Underfrequency | | | | | | |
87 | Phase Differential | | | | | | |