Figure. 5.4.4 - 165. Two connection options for voltage measurement.
The connection on the left shows the relay that has a full voltage connection with complete phase-to-
phase or phase-to-earth voltages (3LN+U4; also on modes 3LL + U4 and 2LL+U3+U4); the AVR
measurement voltage can be selected to be either U12, U23, or U31. If only one voltage is available for
the AVR (the connection on the right), the regulator must be connected to the U4 input, and set to
measure both from the U4 channel and from the connected voltage (U12, U23 or U31).
The general settings also include various online measurements and calculations from the AVR function
as well as the location of the tap changer. Information about the settings and AVR status can be found
later in this document.
Contr
Control se
ol setttings
tings
The control settings include the operating mode selection ("Auto" or "Manual") as well as the settings
for the maximum and minimum control pulse lengths for the used output contacts. Additionally, the
settings include the setting for the minimum instant operation wait time between pulses.
Below is an example of the settings that control pulse timings.
Figure. 5.4.4 - 166. Control pulse timing settings.
First, the user sets the minimum and maximum times for control pulses. If the tap changes location
during the control pulse, thus also changing the voltage and the controlled direction, the command is
terminated. If the set maximum control time is exceeded, the control signal is terminated even if tap
location hasn't changed. After the termination, the set minimum time between pulses is used to prevent
new control pulse outputs (esp. instant low requests) from taking place during this time.
TTap se
ap setttings
tings
A
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Q-T215
-T215
Instruction manual
Version: 2.04
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