ABB REL670 2.2 IEC - Page 18

Setting guidelines...................................................................... 541
Equipment protection, such as for motors, generators,
reactors and transformersEquipment protection for
transformers......................................................................... 542
Equipment protection, capacitors......................................... 542
Power supply quality............................................................ 542
High impedance earthed systems........................................ 542
Direct earthed system.......................................................... 543
Settings for two step residual overvoltage protection...........544
Overexcitation protection OEXPVPH ............................................ 546
Identification.............................................................................. 546
Application.................................................................................546
Setting guidelines...................................................................... 548
Recommendations for input and output signals................... 548
Settings................................................................................ 549
Service value report............................................................. 550
Setting example....................................................................550
Voltage differential protection VDCPTOV ......................................552
Identification.............................................................................. 552
Application.................................................................................552
Setting guidelines...................................................................... 554
Loss of voltage check LOVPTUV .................................................. 555
Identification.............................................................................. 555
Application.................................................................................556
Setting guidelines...................................................................... 556
Advanced users settings...................................................... 556
Radial feeder protection PAPGAPC............................................... 556
Identification.............................................................................. 556
Application.................................................................................556
Setting guidelines...................................................................... 557
Section 11 Frequency protection....................................................559
Underfrequency protection SAPTUF ............................................. 559
Identification.............................................................................. 559
Application.................................................................................559
Setting guidelines...................................................................... 559
Overfrequency protection SAPTOF ...............................................560
Identification.............................................................................. 560
Application.................................................................................561
Setting guidelines...................................................................... 561
Rate-of-change of frequency protection SAPFRC .........................562
Identification.............................................................................. 562
Application.................................................................................562
Setting guidelines...................................................................... 562
Table of contents
12 Line distance protection REL670 2.2 IEC
Application manual