| ANSI Code |
Description |
| 21 |
Phase Impedance Protection |
| 21N |
Ground Voltage Protection |
| 27 |
Under Voltage Protection |
| 46 |
Negative Phase Sequence Protection |
| 46BC |
Broken Conductor Detection |
| 47 |
Negative Phase Sequence Over Voltage Protection |
| 50 |
Instantaneous/Definite Time Phase Over current Protection |
| 51 |
Inverse Time Phase Over current Protection |
| 50N |
Instantaneous/Definite Time Ground Over current Protection |
| 51N |
Inverse Time Ground Over current Protection |
| 59 |
Over Voltage Protection |
| 59N |
Residual Over Voltage Protection |
| FLC |
Fault locator |
| 67P |
Directional Phase Over current Protection |
| 67N |
Directional Ground Over current Protection |
| 68 |
Out of Step Protection |
| 50BF |
Breaker Failure |
| VTS |
VT Supervision Detection |
| CTS |
CT Supervision Detection |
| 79 |
Auto reclosing |
| 86 |
Lockout (Trip command) |
