9 Operation
Maschinenfabrik Reinhausen GmbH 2022
152
8595028/00 EN
TAPCON
®
250
You can determine the load stress type using the phase angle difference be-
tween voltage and current. You calculate the phase angle difference as fol-
lows:
Figure 79: Calculation of phase angle difference
φ
UI
Phase angle difference between voltage and current
φ
U
Phase angle of voltage
φ
I
Phase angle of current
Depending on the calculated phase angle difference, you have to select the
following option:
▪ φ
UI
> 0: Inductive
▪ φ
UI
< 0: Capacitive
9.3.3.2.6 Setting master/follower current blocking
You can use this parameter to activate the circulating reactive current block-
ing limit for the tap synchronization parallel operation method. The device
thereby calculates and monitors the circulating reactive current in the same
manner as the parallel operation method for circulating reactive current mini-
mization, and provides you with the safety function of circulating reactive
current blocking. The Circulating reactive current blocking parameter is used
to set the limit value.
Master/follower switching characteristics
You can use this parameter to set the switching characteristics for the tap
synchronization parallel operation method.. You can select the following op-
tions:
▪ Sequentially: When a tap-change operation takes place, the master com-
municates its new tap position to the followers via the CAN bus as soon
as the master has completed its tap-change operation. The tap-change
operations of the master and followers thereby take place one after an-
other (sequentially).
▪ In sync: When a tap-change operation takes place, the master communi-
cates its new tap position to the followers via the CAN bus as the master
starts its tap-change operation. The tap-change operations of the master
and followers thereby take place at almost the same time (in synch).
Maximum tap difference
You can use this parameter to set the maximum permissible tap difference
between followers and master on the follower.
Summary of Contents for TAPCON 250
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