Indicated by P, refer to the loss occurred in the magnetization process of the iron core, called iron loss for short.
Normally reflected by the power energy PB/f consumed when the iron core is magnetized to some magnetic induction density (B) under some frequency (f) magnetic field,
for example, iron loss P1.5/60 indicates the power energy consumed when 50Hz frequency is magnetized to 1.5T,
the meaning of indexes as P1.0/50, P1.7/50) P1.5/60, P1 0/400 and P0.5/2000, etc are similar, unit W/kg.
