Hey Onefinitycnc,
Then your 2.2 kW / 1.5 kW ratings do not mean the mechanical power delivered at the end of the shaft, like IEC 60034-1 demands. Obviously what you mean with your ratings of “1.5 kW” and “2.2 kW” is the so-called apparent electric power.
That means that the mechanical power delivered at the shaft is much lower than with real 1.5 kW or 2.2 kW spindles. What you give is the power that is drawn at the input. IEC 60034-1 requires another power rating: The mechanical power available at the shaft.
See here for example calculation. There you see that a spindle that really delivers 2.2 kW mechanical power at its shaft draws more than 3.8–4.5 kVA (and would require a 22 A fuse at 220 V)
In the example linked above, I show that a chinese spindle manufacturer does the same: Offering with power consumption, not power delivery. Like the Makita, where they give the hp that it consumes, not that it delivers, like explained here