
8-1
8.1 Introduction
In the electromagnetic devices, the losses produce an increase of the temperatures. As a consequence,
in addition to the electromagnetic design, it is very important a device thermal analysis for well under-
standing its thermal limit, taking into account the thermal constrains imposed by the insulating mate-
rial classes. e winding maximum temperatures with respect to the insulation classes are reported in
Table 8.1.
It is important to underline that the increase of the winding temperature over the insulation class
reduces heavily the insulation life as shown in Figure 8.1.
It is well evident that a correct thermal analysi ...