7 Functions and settings
© Maschinenfabrik Reinhausen 2012
2117246/02 EN
TAPCON® 230 basic
93
7.3.12.1
Setting the undervoltage V< limit value
Undervoltage blocking prevents tap change operations of the tap changer if
there is a power cut. The voltage regulator output pulses are blocked and the
red "V<" LED lights up as soon as the measured voltage (V
actual
) falls below
the set limit value.
If the measured voltage (V
Act
) falls below the set limit value, the relevant sig-
naling relay comes into operation after the set
signaling delay time
(page
94). Contact X4:1/3 closes and contact X4:2/3 opens.
Setting range
Step size
Factory setting
60 %...100 %
of desired value
1 %
90 %
Table 21
Setting range for V< undervoltage limit value
To set the V< undervoltage limit value for undervoltage blocking, proceed as
follows:
1.
>
Control Parameters >
Limit
Values >
<00> V< Undervoltage (%).
2. Press
to increase the value or
to
reduce it.
3. Press
.
The V< undervoltage limit value is set.
