ANSI NORM LİSTESİ
2 | Time delay starting or closing relay |
3 | Trip circuits monitoring |
21 | Distance protection |
25 | Synchrocheck |
27 | Undervoltage function |
27R | Additional undervoltage function |
37 | Undercurrent detection |
46 | Unbalance negative sequence current protection |
47 | Voltage unbalance protection |
49 | Thermal image |
50 | Phase instantaneous overcurrent function |
50C | Transformers tank protection |
50FA | Instantaneous overcurrent with harmonics restrain |
50N | Neutral / Ground Instantaneous overcurrent function |
50Ns | Sensitive neutral instantaneous overcurrent function |
50N/50Ns | Sensitive neutral instantaneous overcurrent unit |
50Nd/51Nd | Neutral unbalance (WYE connection) |
50d/51d | Current unbalance in double WYE Capacitor banks |
50s+62 | Circuit breaker failure protection |
51 | Phase overcurrent function |
51N | Neutral overcurrent function |
50N/51Ns | Neutral/Sensitive neutral time overcurrent |
51RB | Protection against blocked rotor |
59 | Overvoltage function |
59N | Zero sequence overvoltage function |
64 | Ground faults protection |
66 | Excessive number of start ups (motors) |
67 | Directional phase overcurrent |
67N | Directional neutral overcurrent |
67NA | Directional zero sequence overcurrent (Isolated neutral networks) |
79 | Recloser |
81 M/m | Over/under frequency |
87 | Differential protection |
95 | Special neutral overcurrent function |
95N | Special neutral overcurrent function. |