Siemens Siprotec 4 SIPROTEC 7SA63 Protection Relay – 4xI 4xV, graphical display, 1-/3-pole tripping

4 current inputs and 4 voltage inputs (4xI, 4xV) ، Graphical display for user-friendly monitoring and configuration ، 1-/3-pole tripping for flexible protection schemes ، Protection Functions: ، Distance protection (21/21N) ، High resistance earth-fault protection (50N, 51N, 67N) ، Earth-fault detection for isolated and resonant-earthed networks ، Tele (pilot) protection (85) ، Fault locator (FL) ، Power-swing detection/tripping (68/68T) ، Phase-overcurrent protection (50/51) ، Switch-onto-fault protection (50HS) ، STUB bus overcurrent protection (50STUB) ، Over/undervoltage protection (59/27) ، Frequency protection (81O/U) ، Auto-reclosure (79), Synchro-check (25) ، Control & Monitoring: ، Commands for circuit breakers and isolators ، Trip circuit supervision (74TC) ، Self-supervision and measured-value monitoring ، Event and fault logging ، Communication: ، IEC 61850, IEC 60870-5-103, PROFIBUS, MODBUS ، DIGSI 4 software for configuration ، Time synchronization via IRIG-B/DCF77 ، Reliable Siemens technology for dependable power system protection