9 Visualization
Maschinenfabrik Reinhausen GmbH 2020 1794453918/14 EN ETOS
®
TD
Note that the entire regulating range of the on-load tap-changer is traveled
through during automatic synchronization. This allows strong voltage
changes to occur on the transformer. Therefore, carry out the automatic
synchronization on a de-energized transformer.
Conditions for automatic synchronization:
▪ The motor-drive unit is in "Local" operating mode.
▪ The motor protective switch is switched on (positionI).
▪ The motor voltage is below the permissible range.
1. Go to Settings > Calibrate hardware > Tap position (automatic).
2. Press the Start button.
3. Press the Start button to confirm the message.
ð The automatic synchronization is carried out.
9.19.2 Multi-column on-load tap-changer model
In the multi-column design of the on-load tap-changer, you can carry out the
synchronization automatically. To do so, the on-load tap-changers are
moved across the entire regulating range. All on-load tap-changers are con-
trolled simultaneously.
Note that the entire regulating range of the on-load tap-changer is traveled
through during automatic synchronization. This allows strong voltage
changes to occur on the transformer. Therefore, carry out the automatic
synchronization on a de-energized transformer.
Conditions for automatic synchronization
▪ The motor-drive unit is in "Local" operating mode.
▪ The motor protective switch is switched on (positionI).
▪ The motor voltage is below the permissible range.
Figure118: Synchronizing the motor-drive unit
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