IEC 61850 or
function name
ANSI Function description Generator
REG670
(Customized)
REG670 (A20)
REG670 (B30)
REG670 (C30)
Frequency protection
SAPTUF 81 Underfrequency protection 0-6 3 6 6
SAPTOF 81 Overfrequency protection 0-6 3 6 6
SAPFRC 81 Rate-of-change of frequency protection 0-6 1 3 3
FTAQFVR 81A Frequency time accumulation protection 0-12 12-E03 12-E03 12-E03
Multipurpose protection
CVGAPC General current and voltage protection 0-9 6 6 6
General calculation
SMAIHPAC Multipurpose filter 0-6
1) 67 requires voltage
2) 67N requires voltage
Generator protection REG670
1MRK 502 074-BEN M
Hitachi Power Grids 11
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