8 Operation
Maschinenfabrik Reinhausen GmbH 2018
97
5252433/02 EN
ECOTAP
®
VPD
®
CONTROL PRO
8.8 Tap position capture
The current tap position of the on-load tap-changer is transmitted from the
ECOTAP VPD MD&C controller to the CONTROL PRO controller. No further
settings are necessary for this.
8.9 Parallel operation (optional)
Parallel transformer operation is used to increase the throughput capacity or
short-circuit capacity at one location. The device provides you with specific
functions for regulating transformers.
Conditions for parallel
operation
Compliance with the following general conditions is required for operating
transformers in parallel:
▪ Identical rated voltages
▪ Transformer power ratio (< 3 : 1)
▪ Maximum deviation of short-circuit voltages (U
K
) for transformers con-
nected in parallel < 10%
▪ Same number of switching groups
▪ For parallel operation with CAN communication: Current transformers with
the same rated values must be used for all devices operating in parallel
8.9.1 Parallel operation methods
You can undertake parallel operation with various parallel operation meth-
ods.
8.9.1.1 Tap synchronization
With the
tap synchronization
parallel operation method, one voltage regu-
lator works as the master and all others as followers.
Master
Follower
Tap position
CAN bus
M
AVR
M
AVR
T1
T2
Figure 65: Tap synchronization
Summary of Contents for ECOTAP VPD CONTROL PRO
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