In most of Europe (which runs a shared grid), not just Germany, it's 230V between any two of the three wires and 400V on each line:

> For example, in countries with nominal 230 V power, the line voltage is 400 V and the phase voltage is 230 V. https://en.wikipedia.org/wiki/Three-phase_electric_power

In the counter integrated induction simply gets connected with all three phases, which are available in-house anyways.

https://en.wikipedia.org/wiki/Continental_Europe_Synchronous...