IEC 61850 ANSI Function description GeneratorREG670REG670 (A20)REG670 (B30)REG670 (C30)ROV2PTOV 59N Two step residual overvoltageprotection0-3 3 3 3OEXPVPH 24 Overexcitation protection 0-2 1 1 2VDCPTOV 60 Voltage differential protection 0-2 2 2 2STEFPHIZ 59THD 100% stator earth faultprotection, 3rd harmonic based0-1 1-D21 1 1LOVPTUV 27 Loss of voltage checkFrequency protectionSAPTUF 81 Underfrequency protection 0-6 3 6 6SAPTOF 81 Overfrequency protection 0-6 3 6 6SAPFRC 81 Rate-of-change frequencyprotection0-3 1 3 3FTAQFVR 81A Frequency time accumulationprotection0-12 12-E03 12-E03 12-E03Multipurpose protectionCVGAPC General current and voltageprotection1-12 6 6 6General calculationSMAIHPAC Multipurpose filter 0-61) 67 requires voltage2) 67N requires voltage2.3 Control and monitoring functionsIEC 61850 ANSI Function description GeneratorREG670REG670 (A20)REG670 (B30)REG670 (C30)ControlSESRSYN 25 Synchrocheck, energizing check andsynchronizing0-2 1 2 2APC30 3 Apparatus control for up to 6 bays, max 30apparatuses (6CBs) incl. interlocking0-1 1-H09 1-H09 1-H09QCBAY Apparatus control 1+5/APC30 1+5/APC301+5/APC301+5/APC30Table continues on next page1MRK502052-UEN B Section 2Available functions55Technical manual