The optimized motor (see Fig. 4 was made of non oriented
fully finished electrical steel M290-50A with a Dural
housing. The steel M290-50A has parameters guaranteed by
manufacture (see in table III), which were verified, after laser
cutting both in and without a protective atmosphere, on the
sheet samples of 150 mm x 150 mm on a BROCKHAUS
Electrical Steel Tester MPG. Differences in the iron losses
of the delivered material in the rolling direction and in the
direction parallel to the rolling direction were found.