Siemens SIPROTEC 4 7VE61 User Manual

[logik-synchrocheckfunktion-110403-kn, 1, en_GB]
Figure 2-9
Logic diagram of the synchronization function (illustration for one channel)
If the corresponding conditions are fulfilled the indications Sync. Udiff ok , Sync. fdiff ok , and
Sync. α ok are issued.
The indications in the left part of the logic diagram describe if general conditions are fulfilled or not. This indi-
cation category will be explained using two examples. The indiciation
Sync. U2<< shows that the voltage U2
is outside the operating range and is smaller than the set minimum threshold. The indiciation Sync U2<U1 is
produced if the difference voltage is outside the setting limits. Here the lower setting value 6151 dU SYNC
U2<U1 is not reached. This indication contains indirect information that voltage U2 must unconditionally be
Functions
2.2 Paralleling Functions
44 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017

Siemens SIPROTEC 4 7VE61 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7VE61
Category	Power distribution unit
Language	English