There are three basic ways to connect the phase windings of each side in three-phase transformers
Y-connection, also called star
connection, where one end of the three phase windings are connected together in
one point called the neutral point or the star point.
D-connection, also called delta connection, where the .........
The steam blow is used for boiler pipe cleaning.
It is effective for removing the heavy oxide or mill scale layer that forms during
pipe hot working fabrication. It is also effective to remove construction
debris, weld slag, sand, oil, dust, rust and
The Transformer Parallel
Operation when its primary winding is connected to a common Bus bar, and
the secondary winding is connected to a common Bus bar or load.
Advantages of transformer parallel
operation.
Increases the efficiency of the system.
The system more is flexible and reliable.
Disadvantage
Increases the short-circuit current of the system.
TransformerParallel operationis necessary for the following reasons:
Substation testing is a group of engineering tests checking for the different components of the substation, that are required to ensure the safe energization and
