ABB RELION 620 Series Technical Manual page 36

Table of contents
30
Signals.....................................................................................1040
Settings....................................................................................1041
Monitored data.........................................................................1043
Technical data......................................................................... 1045
Technical revision history........................................................ 1045
Tap changer control with voltage regulator OLATCC...................1045
Identification............................................................................ 1045
Function block......................................................................... 1046
Functionality............................................................................ 1046
Operation principle.................................................................. 1046
Voltage and current measurements................................... 1047
Tap changer position inputs............................................... 1048
Operation mode selection.................................................. 1049
Manual voltage regulation.................................................. 1050
Automatic voltage regulation of single transformer............ 1051
Automatic voltage regulation of parallel transformers........ 1055
Timer characteristics.......................................................... 1062
Pulse control.......................................................................1063
Blocking scheme................................................................ 1064
Alarm indication..................................................................1069
Application............................................................................... 1070
Signals.....................................................................................1077
Settings....................................................................................1078
Monitored data.........................................................................1079
Technical data......................................................................... 1081
Technical revision history........................................................ 1082
Section 10 Power quality measurement functions....................... 1083
Current total demand distortion CMHAI........................................1083
Identification............................................................................ 1083
Function block......................................................................... 1083
Functionality............................................................................ 1083
Operation principle.................................................................. 1083
Application............................................................................... 1084
Signals.....................................................................................1085
Settings....................................................................................1085
Monitored data.........................................................................1086
Voltage total harmonic distortion VMHAI......................................1086
Identification............................................................................ 1086
Function block......................................................................... 1086
Functionality............................................................................ 1087
Operation principle.................................................................. 1087
Application............................................................................... 1088
Signals.....................................................................................1088
620 series
Technical Manual