[darstellung-trafostufenschaltung-100403-kn, 1, en_GB]
Figure 2-6 Synchronisation via a transformer
The 7VE61 and 7VE63 device takes into consideration via the entry of the parameter 6122 ANGLE ADJUSTM..
the angle rotation and thus the vector group for the transformer. For transformers with tap changer the
setting can be also notified to the device for example via binary code and other codes (implemented in the
7VE63). In the event of deviations from the rated transformation ratio the voltage amplitude is adapted
accordingly.
Apart from the via the binary input, the tap changer information to the device can also be transmitted via the
serial interface (e.g. Profibus DP). Logical allocation of binary tap changer information from the bus to the
logical binary inputs is to be implemented via the CFC (Connect module).
NOTE
For transformers with tap changers for a quadrature or phase angle control the additional angle rotation in
the voltage cannot be corrected. Here synchronism should always be done with the rated position of the
tap changer (no angle rotation). Unrestricted synchronisation is always possible if voltage transformers are
located on both sides of the circuit breaker.
1
1
/
2
– and 2–channel Version
A high degree of safety and reliability are achieved in the devices 7VE61 and 7VE63 by virtue of the multi-
channel capability. For this purpose a two-out of-two decision is implemented. Two independent conditions
must always be fulfilled for the closure command. For the 7VE61 and 7VE63 devices and the two-out of-two
decision is implemented differently. The following diagram shows the principal structure of the two versions
used.
[ve6-mehrkanaligkeit-030205-kn, 1, en_GB]
Figure 2-7 Design of a multi-channel redundancy
To distinguish the two versions, the terms 1
1
/
2
-channel capability and 2-channel capability were introduced.
They are explained in more detail in the following.
2.2.1.3
Functions
2.2 Paralleling Functions
38 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
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