Functions
• Differential protection
- High impedance differential protection (PDIF,87X)
• Current protection
- Instantaneous phase overcurrent protection(PIOC,50)
- Four step phase overcurrent protection(POCM,51/67)
- Instantaneous residual overcurrent protection(PIOC,50N)
- Four step residual overcurrent protection(PEFM,51N/67N)
- Thermal overload protection, one time constant (PTTR,26)
- Thermal overload protection, two time constants (PTTR,49)
- Breaker failure protection (RBRF,50BF)
- Stub protection (PTOC, 50STB)
- Pole discordance protection (RPLD,52PD)

• Voltage protection
- Two step undervoltage protection (PUVM,27)
- Two step overvoltage protection (POVM,59)
- Two step residual overvoltage protection(POVM,59N)
• Frequency protection
- Underfrequency protection (PTUF,81)
- Overfrequency protection (PTOF,81)
- Rate-of-change frequency protection(PFRC,81)
• Multipurpose protection
- General current and voltage protection(GAPC)
• Secondary system supervision
- Current circuit supervision (RDIF)
- Fuse failure supervision (RFUF)
• Control
- Synchrocheck and energizing check(RSYN,25)
- Autorecloser (RREC,79)
- Apparatus control for single bay, max 8 app.(1CB) incl. Interlocking (APC8)
- Apparatus control for single bay, max 15 app.(2CBs) incl. Interlocking (APC15)
- Apparatus control for up to 6 bays, max 30app. (6CBs) incl. Interlocking (APC30)
• Logic
- Tripping logic (PTRC, 94)
- Trip matrix logic
- Configurable logic blocks
- Fixed signal function block
• Monitoring
- Measurements (MMXU)
- Supervision of mA input signals (MVGGIO)
- Event counter (GGIO)
- Event function
- Disturbance report (RBDR)
- Fault locator (RFLO)
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