| Function |
Description
|
| 7 |
Sudden Change In Phase/Residual Current Protection
|
| 21 |
Line Distance
|
| 21G |
Ground Distance
|
| 21P |
Phase Distance
|
| 24 |
Overexcitation (Volts per Hertz)
|
| 25 |
Synchrocheck
|
| 25A |
Automatic Synchronizing
|
| 26 |
Overload
|
| 27 |
Undervoltage
|
| 27N |
Ground Fault Undervoltage
|
| 27P |
Phase Undervoltage
|
| 27X |
Auxiliary Undervoltage
|
| 32 |
Power
|
| 37 |
Undercurrent
|
| 40 |
Loss Of Field
|
| 46 |
Phase Balance Current / Current Plausibility Check
|
| 46N |
Negative Sequence Overcurrent
|
| 47 |
Phase Sequence Voltage
|
| 47N |
Negative Sequence Voltage
|
| 49 |
Thermal
|
| 50 |
Instantaneous Overcurrent
|
| 50BF |
Breaker Failure
|
| 50DD |
Adaptive Fault Detector
|
| 50G |
Ground Instantaneous Overcurrent
|
| 50N |
Neutral Instantaneous Overcurrent
|
| 50P |
Phase Instantaneous Overcurrent
|
| 50_2 |
Negative Sequence Instantaneous Overcurrent
|
| 51 |
Time Overcurrent
|
| 51G |
Ground Time Overcurrent
|
| 51N |
Neutral Time Overcurrent
|
| 51P |
Phase Time Overcurrent
|
| 51_2 |
Negative Sequence Time Overcurrent
|
| 51/27C |
Voltage Controlled Time Overcurrent
|
| 51/27R |
Voltage Restrained Time Overcurrent
|
| 52 |
AC Circuit Breaker
|
| 59 |
Overvoltage
|
| 59N |
Neutral Overvoltage
|
| 59P |
Phase Overvoltage
|
| 59X |
Auxiliary Overvoltage
|
| 60 |
Voltage Balance
|
| 60FL |
Voltage Transformer Supervision
|
| 64F |
Field Ground
|
| 64G |
100% Stator Ground Inputs
|
| 67 |
Ac Directional Overcurrent
|
| 67N |
Neutral Directional Overcurrent
|
| 67P |
Phase Directional Overcurrent
|
| 67_2 |
Negative Sequence Directional Overcurrent
|
| 68 |
Power Swing Blocking
|
| 74TC |
Trip Circuit / Control Circuit Supervision
|
| 78 |
Out-of-Step / Pole Slip
|
| 79 |
Automatic Recloser
|
| 81 |
Frequency
|
| 87 |
Differential Protective
|
| 87B |
Bus Differential Protective
|
| 87L |
Segregated Line Current Differential
|
| 87T |
Transformer Differential Protective
|
| 87N |
Low Impedance Differential Protection
|
| 87V |
Voltage Differential Protection
|
| 90 |
Transformer Control
|