ABB Relion 670 series - Denial of Service (DoS) Protection; Certificate Handling for Secure Communication

8.18 Generator rotor overload protection, GRPTTR (49R)....................................................................586
8.18.1 Identification.................................................................................................................................... 586
8.18.2 Functionality..................................................................................................................................... 586
8.18.3 Function block.................................................................................................................................. 587
8.18.4 Signals................................................................................................................................................ 587
8.18.5 Settings............................................................................................................................................. 588
8.18.6 Monitored data................................................................................................................................ 589
8.18.7 Operation principle......................................................................................................................... 589
8.18.8 Technical data...................................................................................................................................597
Section 9 Voltage protection.............................................................................................. 599
9.1 Two step undervoltage protection UV2PTUV (27).........................................................................599
9.1.1 Identification.................................................................................................................................... 599
9.1.2 Functionality..................................................................................................................................... 599
9.1.3 Function block..................................................................................................................................599
9.1.4 Signals............................................................................................................................................... 600
9.1.5 Settings..............................................................................................................................................601
9.1.6 Monitored data................................................................................................................................ 603
9.1.7 Operation principle......................................................................................................................... 603
9.1.7.1 Measurement principle............................................................................................................... 604
9.1.7.2 Time delay......................................................................................................................................604
9.1.7.3 Blocking..........................................................................................................................................609
9.1.7.4 Design............................................................................................................................................. 610
9.1.8 Technical data................................................................................................................................... 611
9.2 Two step overvoltage protection OV2PTOV (59)........................................................................... 612
9.2.1 Identification.....................................................................................................................................612
9.2.2 Functionality OV2PTOV................................................................................................................... 612
9.2.3 Function block...................................................................................................................................613
9.2.4 Signals................................................................................................................................................ 613
9.2.5 Settings..............................................................................................................................................614
9.2.6 Monitored data.................................................................................................................................616
9.2.7 Operation principle..........................................................................................................................616
9.2.7.1 Measurement principle................................................................................................................ 617
9.2.7.2 Time delay.......................................................................................................................................617
9.2.7.3 Blocking.......................................................................................................................................... 623
9.2.7.4 Design............................................................................................................................................. 623
9.2.8 Technical data...................................................................................................................................625
9.3 Two step residual overvoltage protection ROV2PTOV (59N)......................................................625
9.3.1 Identification.................................................................................................................................... 625
9.3.2 Functionality..................................................................................................................................... 625
9.3.3 Function block.................................................................................................................................. 626
9.3.4 Signals................................................................................................................................................626
9.3.5 Settings..............................................................................................................................................627
Table of contents
13
Technical manual