Seg HighTECH MRG3 - Selection of Star or Delta Connection

SEG Electronics GmbH Manual MRG3
22 DOK-TD-MRG3, Rev. D
4.3.1 Selection of star or delta connection
All connections of the input voltage transformers are led to screw terminals. The nominal voltage of
the device is relates to the nominal voltage of the input transformers. Dependent on the application
the input transformers can be connected in either delta or star. The connection for the phase-to-
phase voltage is the delta connection. In star connection the measuring voltage is reduced by 1√3
During parameter setting the connection configuration either Y or  has to be adjusted.
Figure 4.1: Input v.t.s in delta connection (  )
Figure 4.2: Input v.t.s in star connection (Y)