Parameter Values (Range) Unit Step Default Description
Parallel trafos 0...10 0 Number of parallel transformers in
addition to own transformer
Delay characteristic 0=Inverse time
1=Definite time
1=Definite time Selection of delay characteristic
Band width voltage 1.20...18.00 %Un 0.01 3.00 Allowed deviation of the control voltage
Load current limit 0.10...5.00 xIn 0.01 2.00 Load current blocking limit
Block lower voltage 0.10...1.20 xUn 0.01 0.70 Voltage limit, where further voltage
lowering commands are blocked
Runback raise V 0.80...2.40 xUn 0.01 1.25 Voltage limit, where fast lower
commands takes place
Cir current limit 0.10...5.00 xIn 0.01 0.15 Blocking limit for high circulating current
LDC limit 0.00...2.00 xUn 0.01 0.10 Maximum limit for line drop
compensation term
Lower block tap -36...36 0 Tap changer limit position which gives
lowest voltage on the regulated side
Raise block tap -36...36 17 Tap changer limit position which gives
highest voltage on the regulated side
Max operations in 1h 0...10000 100 Allowed number of controls per one hour
sliding window
Cmd error delay time 10...50 s 20 Time delay before command error will be
activated
Follower delay time 6...20 s 6 Time delay between successive follower
commands by a master
LTC pulse time 500...10000 ms 100 1500 Output pulse duration, common for raise
and lower pulses
LDC enable 0=False
1=True
1=True Selection for line drop compensation
Alarms enabled 0=False
1=True
1=True Alarm selection
Rv Pwr flow allowed 0=False
1=True
0=False Reverse power flow allowed
9.5.18 Monitored data
Table 640: OLATCC Monitored data
Name
Type Values (Range) Unit Description
TAP_POS INT8 -36...36 Integer value
representing tap changer
position of own
transformer
TR0_I_AMPL FLOAT32 0.00...15000.00 A Transmitted current
magnitude
TR0_I_ANGL FLOAT32 -180.00...180.00 deg Transmitted current
angle
U_MEAS FLOAT32 0.00...5.00 xUn Phase-to-phase voltage,
average filtered
Table continues on next page
Section 9 1YHT530004D05 D
Control functions
760 615 series
Technical Manual
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