6 Commissioning
66 TAPCON® 230 basic 2117246/02 EN © Maschinenfabrik Reinhausen 2012
6.3.2 Function tests for additional functions
REMOTE mode must be disabled before you can control the on-load tap-
changer manually in manual mode.
The on-load tap-changer can only be controlled in manual mode using the
or keys.
Setting V< undervoltage limit and checking undervoltage blocking
Undervoltage blocking is activated as standard.
1. Press
to select manual mode.
2. Set V< undervoltage limit to 85 %.
3. Set desired value 1 such that the measured voltage (V
Act
) is below the V<
undervoltage limit
Example: Measured voltage = 100 V, set desired value 1 to 120 V (greater
than 100 V/0.85 = 117 V).
The red V< undervoltage LED will light up.
After around 10 s the "Undervoltage" message appears in the display
and the relevant signaling relay is activated. Contact X4:1/3 closes and
contact X4:2/3 opens.
4. Press
to select auto mode.
The device is blocked and does not therefore issue any control com-
mands.
5. Press
to select manual mode.
6. Set the operating values you want for desired value 1 and V< undervoltage
limit.
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