ABB RELION Series - Related documentation; Symbols and conventions

Technical data........................................................................... 672
Section 10 Power quality measurement functions......................... 673
Current total demand distortion CMHAI..........................................673
Identification.............................................................................. 673
Function block........................................................................... 673
Functionality.............................................................................. 673
Operation principle.................................................................... 673
Application................................................................................. 674
Signals.......................................................................................675
Settings......................................................................................675
Monitored data...........................................................................676
Voltage total harmonic distortion VMHAI........................................676
Identification.............................................................................. 676
Function block........................................................................... 676
Functionality.............................................................................. 677
Operation principle.................................................................... 677
Application................................................................................. 678
Signals.......................................................................................678
Settings......................................................................................678
Monitored data...........................................................................679
Technical revision history.......................................................... 679
Voltage variation PHQVVR.............................................................679
Identification.............................................................................. 679
Function block........................................................................... 680
Functionality.............................................................................. 680
Operation principle.................................................................... 680
Phase mode setting..............................................................681
Variation detection................................................................681
Variation validation............................................................... 683
Duration measurement.........................................................686
Three/single-phase selection variation examples................ 687
Recorded data........................................................................... 689
Application................................................................................. 691
Signals.......................................................................................693
Settings......................................................................................694
Monitored data...........................................................................695
Technical data........................................................................... 698
Voltage unbalance VSQVUB..........................................................698
Identification.............................................................................. 698
Function block........................................................................... 698
Functionality.............................................................................. 699
Operation principle.................................................................... 699
Application.................................................................................704
Table of contents
REC615 and RER615 21
Technical Manual