Tap Position Capture; Parallel Operation (Optional); Parallel Operation Methods - MR ECOTAP VPD CONTROL PRO Operating Instructions Manual

8 Operation
Conditions for parallel
operation
8.9.1.1 Tap synchronization
Maschinenfabrik Reinhausen GmbH 2018

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.
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
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.
With the tap synchronization parallel operation method, one voltage regu-
lator works as the master and all others as followers.
T1
Figure 65: Tap synchronization
5252433/02 EN
Master
M AVR
Tap position
CAN bus
) for transformers con-
K
Follower
AVR M
® ®
ECOTAP VPD CONTROL PRO
T2
97