ABB Relion 670 series - Page 22

10.3.7.2 Time delay...................................................................................................................................... 677
10.3.7.3 Blocking.......................................................................................................................................... 678
10.3.7.4 Design............................................................................................................................................. 678
10.3.8 Technical data...................................................................................................................................679
10.4 Frequency time accumulation protection function FTAQFVR (81A)..........................................680
10.4.1 Identification.................................................................................................................................... 680
10.4.2 Functionality ....................................................................................................................................680
10.4.3 Function block .................................................................................................................................680
10.4.4 Signals................................................................................................................................................ 681
10.4.5 Settings.............................................................................................................................................. 681
10.4.6 Monitored data.................................................................................................................................682
10.4.7 Operation principle..........................................................................................................................682
Section 11 Multipurpose protection.................................................................................... 687
11.1 General current and voltage protection CVGAPC.......................................................................... 687
11.1.1 Identification.................................................................................................................................... 687
11.1.2 Functionality..................................................................................................................................... 687
11.1.2.1 Inadvertent generator energization......................................................................................... 687
11.1.3 Function block..................................................................................................................................688
11.1.4 Signals................................................................................................................................................688
11.1.5 Settings............................................................................................................................................. 690
11.1.6 Monitored data.................................................................................................................................697
11.1.7 Operation principle......................................................................................................................... 698
11.1.7.1 Measured quantities within CVGAPC....................................................................................... 698
11.1.7.2 Base quantities for CVGAPC function...................................................................................... 700
11.1.7.3 Built-in overcurrent protection steps...................................................................................... 700
11.1.7.4 Built-in undercurrent protection steps....................................................................................705
11.1.7.5 Built-in overvoltage protection steps...................................................................................... 705
11.1.7.6 Built-in undervoltage protection steps....................................................................................705
11.1.7.7 Inadvertent generator energizing............................................................................................. 705
11.1.7.8 Logic diagram................................................................................................................................707
11.1.8 Technical data................................................................................................................................... 712
11.2 Rotor ground fault protection (64R).................................................................................................714
11.2.1 Functionality......................................................................................................................................714
11.2.2 Operation principle.......................................................................................................................... 715
11.2.2.1 Rotor ground fault........................................................................................................................ 715
11.2.3 Technical data................................................................................................................................... 718
Section 12 System protection and control.......................................................................... 721
12.1 Multipurpose filter SMAIHPAC........................................................................................................... 721
12.1.1 Identification..................................................................................................................................... 721
12.1.2 Functionality...................................................................................................................................... 721
12.1.3 Function block...................................................................................................................................721
Table of contents
16
Technical manual