Protection Functions:
Distance protection with 6 measuring systems (21/21N)
High resistance earth-fault protection for single and three-phase tripping (50N, 51N, 67N)
Earth-fault detection in 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)
Overvoltage/undervoltage protection (59/27)
Over/underfrequency protection (81O/U)
Auto-reclosure (79)
Synchro-check (25)
Breaker failure protection (50BF)
Thermal overload protection (49)
Control Functions:
Commands for control of circuit breakers and isolators
Monitoring Functions:
Trip circuit supervision (74TC)
Self-supervision of relay
Measured-value supervision
Event and fault logging
Oscillographic fault recording
Switching statistics
Front Design:
Easy numeric keypad operation
Function keys
LEDs for local alarm indication
Front PC port for DIGSI 4 configuration
Communication Interfaces:
Front interface for PC
System interface for control systems:
IEC 61850 Ethernet
IEC 60870-5-103 protocol
PROFIBUS-FMS / DP
DNP 3.0
Serial teleprotection interface
Rear service/modem interface
Time synchronization via IRIG-B, DCF77, or system interface
Power supply: 24–48 V DC
Measuring inputs: 3 phase CT, 1 standard neutral CT, 1 sensitive neutral CT, 4 VT
Digital inputs / outputs: 31 DI / 15 DO
Arc flash sensors: 3
Communication protocols: IEC 61850 Ed.1 & Ed.2, Modbus TCP, DNP3 TCP, EtherNet/IP
Cybersecurity: IEC 62443-4-2 SL1 compliant
Logic engine: IEC 61131 & IEC 61449
Mounting: Withdrawable, flush or rack
Protection degree: IP54 (with flush mounting frame)
