Abstract:
The paper compares the operating regimes of
the large power transformer units, as they are defined in
CEI 60354 and CEI 60076-7, indicating the differences
between them. The modification of the operating
conditions with the load connected to the secondary
winding of the transformer unit is underlined. Further,
the paper presents the software applications for
evaluating the operation of the transformer in different
regimes, their maximum loading limits, as well as the
maximum loading time, according to the thermal models
presented in the two standards.
