The limiting element is the internal temperature in a power semiconductor, i.e., the respective chip temperature. At a very low speed of the electric motor, the 3-phase electric current also “wanders” very slowly. In the worst case, only two of the six built-in transistors have to carry the current on their own during a standstill. So there is no “swapping” among the transistors. At this operating point, the permissible phase current must therefore be limited to about 1/3. This applies regardless of the manufacturer of the inverter. This also holds true for the VP600 family. For a very short time, the full current can also be run at a standstill. Classically, full current is available only starting at seven to ten Hz of electric speed.