ABB RELION 620 Series Technical Manual page 27

620 series ANSI
Technical Manual
Application....................................................................................... 670
Signals.............................................................................................671
Settings............................................................................................672
Monitored data.................................................................................672
Voltage total harmonic distortion PQVPH.............................................673
Identification.................................................................................... 673
Function block................................................................................. 673
Functionality.................................................................................... 673
Operation principle.......................................................................... 673
Application....................................................................................... 674
Signals.............................................................................................674
Settings............................................................................................675
Monitored data.................................................................................675
Voltage variation PQSS........................................................................ 676
Identification.................................................................................... 676
Function block................................................................................. 676
Functionality.................................................................................... 676
Operation principle.......................................................................... 677
Phase mode setting....................................................................677
Variation detection......................................................................678
Variation validation..................................................................... 680
Duration measurement............................................................... 683
Three/single-phase selection variation examples.......................684
Recorded data................................................................................. 686
Application....................................................................................... 689
Signals.............................................................................................691
Settings............................................................................................691
Monitored data.................................................................................692
Voltage unbalance PQVUB.................................................................. 696
Identification.................................................................................... 696
Function block................................................................................. 696
Functionality.................................................................................... 696
Operation principle.......................................................................... 697
Application....................................................................................... 701
Signals.............................................................................................702
Settings............................................................................................703
Monitored data.................................................................................703
Technical data................................................................................. 704
Section 9 Control functions............................................................... 705
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