Table 5: On-load tap changer controller function block
On load tap changer control function (voltage regulator), COLTC
Reference voltage 0.000 ... 2.000 xUn
Delay time for the 1st control pulse 1.0 ... 300.0 s
Delay time for the 2nd control pulse 1.0 ... 300.0 s
Resistive line-drop compens. factor (Ur) 0.0 ... 25.0 %Un
Reactive line-drop compens. factor (Ux) 0.0 ... 25.0 %Un
Load phase angle (in NRP mode) -89 ... +89 deg
Stability factor in parallel operation 0.0 ... 70.0 %Un
Operation mode Not in use
Manual
Automatic single
Automatic master
Automatic follower
Negative Reactance Principle
Minimizing Circulating Current
Controlled via op.mode inputs
Delay mode Definite time
Inverse time
Raise and lower pulse duration 0.5 ... 10.0 s
Bandwith 0.60 ... 9.00 %Un
Overcurrent blocking limit 0.10 ... 5.00 xIn
Undervoltage blocking limit 0.10 ... 1.20 xUn
Overvoltage blocking limit 0.80 ... 1.60 xUn
High circ. current blocking limit 0.10 ... 5.00 xIn
Max limit for LDC term 0.00 ... 2.00 xUn
Reduce Set Voltage step 0.00 ... 9.00 %Un
Max volt tap -36 ... 36
Min volt tap -36 ... 36
Max parallel trafos in MCC mode 4
Operation accuracies
- voltage measurement:
- operation time DT mode:
- operation time IDMT mode:
- lower and raise output pulse duration:
Depends on the frequency of the voltage measured:
f/fn = 0.95 ... 1.05: +1.0% of the set value or
+0.01xUn
+1% of the set value or +250 ms
250ms and an inaccuracy which occurs when
voltage varies +0.5%
+100 ms
Reset ratio (hysteresis) 20% of the set Bandwith
Table 6: Measurement function blocks
General measurement/ analog input on RTD/analog module, MEAI1...8
The general measurement function blocks can be used to measure general purpose dc or ac voltage
signals with a sensor input. They also include a REAL type input which can be used to monitor any internal
REAL type IEC 61131-3 based signal, e.g. input data from the RTD/analog module.
GE1…3 (V dc/ac)
General REAL type input
-10000.00000...10000.00000
-10000.00000...10000.00000
Analog output on RTD/analog module, MEAO1...4
The analog output function blocks handle the scaling of any internal REAL type IEC 61131-3 based signal
to fit a selectable 0…20 mA or 4…20 mA range for use with the outputs on the RTD/analog module.
General REAL type input -10000.00000...10000.00000
Neutral current measurement, MECU1A and MECU1B
Io (A)
Io (%)
0.0…20000.0 A
0.0…80.0% In
Transformer Terminal RET 541, RET 543, RET 545
1MRS755543
16
To Next Page
Loading...
