Add to ORKGConsidering the effects of the magnetic saturration caused by the load current, current diagram methods for calculating charaeteristics of the ordinary squrrel-cage and that of the special squrrel-cage induction motors were established, and reported already. But it was impossible to apply them for the case of the deep-slot squrrel-cage induction motors with the slot-depth larger than 2 cm, because, in this case, the locus of the locked equivalent winding impeadamce phasor was not reprensented exactlly. Using Dr. M. Norman\u27s theory, we could established the current diiagram method which was appropriative for this case. So, in this paper we report the new method that was devised for practical use. Moreover, it would be noted that this new ...