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
