ANSI Code | Description |
27/59 | Under and over voltage Protection |
32P | Directional Power Protection |
37 | Under current Protection |
46 | Negative sequence Protection |
47 | Phase reversal / Negative 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 |
64G | High Impedance Restricted Earth Fault Protection |
50BF | Breaker Failure |
55 | Power factor Protection |
59N | Residua over voltage Protection |
49 | Thermal overload Protection |
50LR | Locked rotor Protection |
48 | Prolong start Protection |
66 | Number of starts |
81 | Frequency Protection |
86 | Lockout (Trip command) |