ABB RELION REX640 Technical Manual page 48

Table of contents
42
Tap changer control with voltage regulator OL5ATCC.................1538
Identification............................................................................ 1538
Function block......................................................................... 1538
Functionality............................................................................ 1539
Analog channel configuration.................................................. 1539
Operation principle.................................................................. 1540
Voltage and current measurements................................... 1541
Tap changer position inputs............................................... 1542
Operation mode selection.................................................. 1543
Manual voltage regulation.................................................. 1545
Automatic voltage regulation of single transformers (Auto
single).................................................................................1546
Automatic voltage regulation of parallel transformers
(Auto parallel)..................................................................... 1550
Timer characteristics.......................................................... 1557
Pulse control.......................................................................1559
Blocking scheme................................................................ 1560
Alarm indication..................................................................1564
Application............................................................................... 1566
Signals.....................................................................................1566
Settings....................................................................................1567
Monitored data.........................................................................1569
Technical data......................................................................... 1572
Petersen coil controller PASANCR...............................................1572
Identification............................................................................ 1572
Function block......................................................................... 1572
Functionality............................................................................ 1573
Analog channel configuration.................................................. 1573
Controller connections.............................................................1574
Operation principle.................................................................. 1575
Application............................................................................... 1588
Commissioning........................................................................ 1588
Signals.....................................................................................1591
Settings....................................................................................1592
Monitored data.........................................................................1595
Technical data......................................................................... 1599
Section 10 Power quality measurement functions....................... 1601
Current total demand, harmonic distortion, DC component
(TDD, THD, DC) and individual harmonics CHMHAI................... 1601
Identification............................................................................ 1601
Function block......................................................................... 1601
Functionality............................................................................ 1602
Analog channel configuration.................................................. 1602
REX640
Technical Manual