RES521 Generator step-up transformers

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GSU take the voltage from the generator voltage level up to the suitable transmission voltage level. These transformers are located in a power station and are built as single-phase or three-phase units.

There are two (2) basic technologies for designing and manufacturing: core and shell. With shell-formed transformers, the primary and secondary are on one leg and surrounded by the core. With a core-formed transformer, cylindrical legs windings cover the core legs.