ABB RET620 - On-Load Tap Changer Control with Voltage Regulator (OLATCC) Main Settings

Table 71. On-load tap changer control with voltage regulator (OLATCC) main settings
Parameter Function Value (Range) Step
Band center voltage OLATCC 0.000...2.000 x Un 0.001
Control delay time 1 OLATCC 1000...300000 ms 100
Control delay time 2 OLATCC 1000...300000 ms 100
Line drop V Ris OLATCC 0.0...25.0 % 0.1
Line drop V React OLATCC 0.0...25.0 % 0.1
Load phase angle OLATCC -89...89 deg 1
Stability factor OLATCC 0.0...70.0 % 0.1
Auto parallel mode OLATCC Auto master
Auto follower
NRP
MCC
-
Operation mode OLATCC Manual
Auto single
Auto parallel
Input control
-
Delay characteristics OLATCC Inverse time
Definite time
-
LCT pulse time OLATCC 500...10000 ms 100
Band width voltage OLATCC 1.20...18.00 % Un 0.01
Custom Man blocking OLATCC 1=Custom disabled
2=OC
3=UV
4=OC, UV
5=EXT
6=OC, EXT
7=UV, EXT
8=OC, UV, EXT
-
Load current limit OLATCC 0.10...5.00 x In 0.01
Block lower voltage OLATCC 0.10...1.20 x Un 0.01
Runback raise volt OLATCC 0.80...2.40 x In 0.01
Cir current limit OLATCC 0.10...5.00 x In 0.01
Lower block tap OLATCC -36...36 -
Raise block tap OLATCC -36...36 -
LDC limit OLATCC 0.00...2.00 x Un 0.01
LDC enable OLATCC False
True
-
Follower delay time OLATTC 6...20 s -
Transformer Protection and Control 1MRS757846 A
RET620
Product version: 2.0
ABB 43