• Voltage protection

– Two step undervoltage protection (PUVM, 27)

– Two step overvoltage protection (POVM, 59)

– Two step residual overvoltage protection(POVM , 59N)

– Overexcitation protection (PVPH, 24)

• 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)

– 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 30 app. (6CBs) incl. Interlocking (APC30)