Answer / omar aziz

Every power transformer has a vector group listed by its
manufacturer. Fundamentally it tells you the information
about how the windings are connected (delta or wye) and the
phace difference betweent the current and voltage. EG.
DYN11 means Delta primary, Wye Secondry and the current is
at 11 o clock reffered to the voltage.

Answer / rajendran

The angle in the specification indicates the phase
difference between primary and secondary quantities and not
between cureent and voltage....

Answer / raj

the primary leakage flux to the secondary leakage flux .
when the secondary currents increase .the primary leakage
flux increases and reactance increases in power transformer
the vector sum of angle is lags behind the voltage.

Here iam a question with SYNCHRONIZATION PANNEL related issue, as i want to design a SYNC.pannel board iam giving the 2 nos of 1MVA Generators to sync pannel , then what wil be the out put of the sync pannel, whether it wil be one cable coems from the sync panel or two cables.. as iam using two transformers to meet my load demand, so pls clear me whether two cables comes from sync panel to connect to transformers or only one cable

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bitumar

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