ABB UNITROL 1020 - Page 48

Chapter 3 - Device Overview 
40 3BHS335648 E82 UNITROL 1020 User Manual
3.4.1.5 Channel Follow-up
While the UN1020 device is operating at an operating mode, the setpoint from the other
modes are following the actual one in order to provide a soft transition, with no bumps
(e.g. from Auto to Manual). This feature is called Channel Follow-up.
3.4.1.6 Description of Parameters
System Data
Nominal excitation current:
Measuring voltage three- or single-
phase:
Nominal voltage of the Machine:
Potent. transformer, prim. voltage:
Potent. transformer, sec. voltage:
Nominal voltage of the Network:
Potent. transformer, prim. voltage:
Potent. transformer, sec. voltage:
Nominal machine current
Current transformer primary:
Current transformer secondary:
No load excitation current:
Ceiling factor:
Machine reactance:
Frequency nominal:
Single phase machine
Ie Nominal [A]
PT [Single_Phase]
[Three_Phase]
[Three_ph_gnd]
UM Nominal [kV]
UM Primary [kV]
UM Secondary [V]
U
NET
Nominal [kV]
U
NET
Primary [kV]
U
NET
Secondary [V]
IM2 Nominal [A]
IM2 Primary [A]
IM2 Secondary [A]
Ie No Load [%]
Kceil [V/V]
Xq [p.u.]
f Nominal [Hz]
Checkbox
UM SecondaryUM Primary
IM2 Primary
IM2 Secondary
IM2 Nominal
Regulator
E
SM
UM Nominal
Ie No Load
Xq
UNET
PTNET
PTM
Ie Nominal
f Nominal
IMPORTANT!
If there is a block transformer with any circuit configuration between PT
M
and
PT
NET
, the phase shift must be compensated. The phase can be
compensated as described in Chapter 3.4.2.7 Synchronization (SYNC).
Setpoint Setting for the Regulator
- Auto
- PF, Var
- Manual
- Open Loop
to voltage regulator
to power factor, reactive power regulator
to manual regulator
to open loop regulation circuit
All setpoints have the following parameters
- Minimum
- Maximum
- Ramp Rate
Auto, Manual and Open Loop also have the following parameters
- Initial Setpoint